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This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no 608843.

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Open Innovation Portal

The 4M2020 Open Innovation Portal has been set up to assist the Micro and Nano Manufacturing Community to develop a pro-active, collaborative environment. The portal can be used to support the development of three types of collaboration. We invite you to submit information in the following categories for organisations that are: • Developing state-of-the art products and services and are providing their expertise to external organisations (Product and Services Offering) • Looking for specific expertise and capability from other organisations (Product and Services Sought) • Wishing to collaborate in new projects and are looking for potential partners (Partner Search)

H2020 Partner Search

Our organization has 30 years experience in collaborative research & have a project that we need some additional expertise in Optics & Photonics field. If you are interested, please email me....

Advanced Manufacturing of Multi-Material Multi-Functional Products Towards 2020 and Beyond (4M2020): FP7 CSA Project - Preparing for the Next Generation of Products

4M2020 is a Coordinated Support Action (CSA) funded by the European Union's Seventh Framework Programme for the support of cluster activities of projects in the application fields of the NMP Theme. The vision of 4M2020 is to build on existing partner...

3D-HiPMAS: Pilot Factory for 3D High Precision MID Assemblies

Due to the high potential of miniaturization and integration, with regard to the innovation degree, quality and sustainability requirements, the 21st century looks forward to the integration of new functions on plastic parts to produce smart plastic ...

Novel Manufacturing Route for Scale up Production of Terahertz Technology Devices

The advances in terahertz technology drive the needs for the design and manufacture of waveguide devices that integrate complex 3D miniaturised components with meso and micro scale functional features and structures. Therefore, in parallel with the d...

Metal Powder Characterization for 3D Printing

In 3D printing of metals, dry powders are spread into thin layers prior to the exposure to ink jet printing for component shape definition. The performance of the specific powder in this process is critical and depends upon a number of properties suc...

Improving the Surface Integrity of 3D Printed Stainless Steel Parts by Laser Polishing

The paper details research aimed at improving the surface integrity of 3D printed stainless steel (SS316L) specimens by employing laser polishing. The effects of laser fluence, pulse distance and hatching strategies on resulting surface integrity wer...

On Comparative Evaluation of Accuracy, Repeatability and Reproducibility of Laser Micromachining Systems

Although laser structuring and texturing have attracted the attention of research communities and industry as emerging viable technologies for surface functionalisation and micro-manufacturing, their implementation in practice requires a very high pr...

Study on the Forming of the Cone-Shaped Electrode in Micro-EDM Milling with Fix-Length Compensation Method

Micro-EDM milling is an effective machining process for three-dimension micro-cavity of high hardness materials. Because of the sharp wear of the electrode, fix-length compensation method is proposed, thus results in a coneshaped electrode. In order ...

Manufacturing of µIM Mould Inserts with AMed Cooling Channels

The Selective Laser Melting (SLM) process is one of the proven key 3D printing technologies for producing complex and micro metallic structures, for instance conformal cooling channels for micro-injection molding. In micro injection molding, the conf...

A Method for Dimensional and Surface Optical Measurements Uncertainty Assessment on Micro Structured Surfaces Manufactured by Jet-ECM

Surface texture and step height measurements of electrochemically machined cavities have been compared among optical and tactile instruments. A procedure is introduced for correcting possible divergences among the instruments and, ultimately, for eva...

Increasing Accuracy and Machining Speed in Precise Electrochemical Machining of a Micro Injection Molding Cavity

In micro injection molding, cavities with high accuracy are required in order to fulfil the given requirements on precision. The molding inserts are often made of additive manufactured alloys in order to create conformal cooling or heating channels c...

Gate Design in Injection Molding of Microfluidic Components using Process Simulations

Just as in conventional injection molding of plastics, process simulations are an effective tool in the area of micro injection molding. They are applied in order to optimize and aid the design of the micro plastic part, the mold and the actual proce...

Analysis of a PECM Electrode Concept for Micro Injection Moulds by Multiphysics Simulation

In micro injection moulding highly precise cavities are needed to fulfil the requirements in precision and at the same time offer the possibility for easy demoulding. Pulsed Electrochemical Machining (PECM) represents a potential technology for manuf...

A Comparative Study of Metal and Ceramic Injection Moulding for Precision Applications

Powder injection moulding (PIM) process is an attractive process as it combines the possibilities of net-shape and large-scale production with wide range of material varieties. This article presents a comparative study of two branches of PIM processe...

Custom Testing Machine for Biaxial Loading of Microtubes

A custom testing machine that allows biaxial loading of microtubes under axial force and internal pressure is described. The main components of the machine are a meso-scale tensile stage, a high-pressure pump and a 3D digital image correlation system...

Quantitative Measurements of Plasticity in Confined Cu Thin Films with a Micro-Pillar Protocol

We report a new experimental protocol for quantitative measurements of plasticity in confined metal thin films. Significant plastic flow within metal thin films can be affected in both confined shear and compression, demonstrated presently in Cu thin...

Microstructure Characterization of Ductile Cast Iron and its Phase Properties Detection

Microstructure plays a vital role in mechanical properties of materials and their behavior in manufacturing processes. Conventional tensile and compressive testing only provides bulk material properties whereas some micro-manufacturing processes requ...

Characterization Analysis According to the Filler Metal Types and the Diffusion Bonding Copula Shape Conditions on the Cemented Carbide

Diffusion bonding is a process whereby two materials are pressed together at high temperature and pressure for a period of time sufficient for atomic diffusion leading to bonding. To facilitate this process, a filler material, such as nickel alloy, i...

Electrostatic Force for Self-alignment of Microparts and its Dependence on Geometrical and Electrical Parameters

This paper seeks to expand our previous understanding of the electrostatic interactions between pairs of complementary electrodes on a planar self-alignment/self-assembly platform. The total electrostatic field is composed of a homogeneous field betw...

2D Position Sensor Based on Speckle Correlation

Speckle pattern based position sensors have been introduced in [1] for the handling of linked micro parts. They enable a contactless position measurement with high accuracy. However, the system is limited to one dimension. Therefore vertical displace...

Uncertainty in 3D Micro Measurement with Focus Variation Microscopy

Micro manufacturing is important for new product applications. As such, due to its size, micro tolerance verification is a challenging task. Optical metrology instruments provide solutions for this task due to their flexibility in accessing the part ...
Moroni, G Collaboration

Evaluation of the Capabilities and Damage Risk of Cleaning Methods for Micro-CMM Stylus Tips

The dimensional accuracy of a micro-CMM is significantly affected by contamination adhered to the stylus tip during use. Contaminant particles can cause dimensional errors that are orders of magnitude greater than those reported in the literature. To...

Design for Micromanufacturing: A Scaling Study on Tolerance Analysis

This paper explores a scaling study on the tolerance analysis on microfeatures. Standard geometric tolerances are used on macro and mesoscale parts and features, but as feature size decreases the effects and challenges of maintaining dimensional tole...

Improving the Tribological Performance of Poly-Ether-Ether-Ketone (PEEK) in Boundary/Mixed Lubrication Regimes by Laser Surface Texturing

The research undertaken evaluates the influence of laser texturing in the form of microscopic dimples on the surface of Poly-ether-ether-ketone (PEEK), with the aim of improving friction and wear characteristics whilst operating within boundary/mixed...

Machining Effect of Vibration Electrochemical Polishing (VECP)

Electrochemical polishing (ECP) has contributed in many areas. However, in conventional ECP, impurities in the material or outside influences may leave micropits in the surface during machining. These micropit surface defects degrade the quality and ...

Development of a Titanium (Ti) Ultrasonic Waveguide System for Nano-Surface Treatment

In this work, a 20 kHz Titanium (Ti) ultrasonic waveguide system for nano-surface treatment was designed and fabricated. In the design process, finite element analysis using ANSYS software was performed to find optimal dimensions of the waveguide, wh...

Biprism Interference Micro-Patterning for Periodic Micro-Structure Generation

We report a novel laser-based surface micro-patterning process for generating periodic micro-features on flat substrates, using a two-faced Fresnel's biprism to generate interference pattern. The biprism with a large apex angle of 178.50 is mounted c...

Fine Pitch Metal Deposition on LDS Materials

Moulded Interconnect Devices (MID) enable versatile applications with 3D circuitry on 3D shaped injection moulded thermoplastic parts. Especially laser based patterning technology combined with selective metallization shows high capability for variou...

Analysis of Micro-Debris in Vibratory Media Finishing

The vibratory media finishing process, widely used for surface modification of large and small components in several applications, lacks an effective online monitoring technique to determine when a desired surface condition has been attained. This pa...

Application of Functional Nano-Patterning to Polymer Medical Micro Implants

Improvement of cells adhesion to medical implants can be achieved through specific surface nano-patterns. The application of nano-patterns to planar surfaces can be obtained in a number of ways. However, the application of functional nano-patterns to...
Bissacco, G Collaboration

Development of Superhydrophobic Surfaces using Ultrasonic Imprint Lithography

Recently, superhydrophobic surfaces have received increasing attention due to its water repelling characteristics. In this study, a facile fabrication method based on ultrasonic imprinting is proposed to develop superhydrophobic surfaces. To fabricat...

Autonomously Generating Micro-Textured Surfaces with Regular Alignment Shapes by using Molecular Beam Epitaxy for Nanoimprint Die

Nanoimprint has been receiving attention with increasing demands. However, it is difficult to generate the die due to the small scale. This study aims to generate nano or micro-textured surfaces by using epitaxial growth process for the nanoimprint d...

Plasma Nitriding Assisted Micro-Texturing into Martensitic Stainless Steel Molds for Injection Molding

High density plasma nitriding system and procedure had been developed for solid-solution hardening of stainless steels and tool steels at low temperature. In particular, high content of nitrogen atoms up to 40 at% were infiltrated in the depth of AIS...

Distributed Plasma Nitriding Systems for Surface Treatment of Miniature Functional Products

RF-DC plasma nitriding system has been developed as an alternative surface treatment. Through comparison of its nitriding performance for SKD-61 tool steels with the commercial plasma processes, the highest hardness depth profile was attained: e.g. t...

A Combined Numerical-Analytical Methodology for Surface Profile Prediction of Abrasive Slurry Jet Micro-Machined Holes

In low-pressure abrasive slurry jet machining (ASJM), a slurry jet of fine abrasive particles is used to erode micro-sized features such as holes and channels in a variety of brittle and ductile materials. The present work extended the capability of ...

Modelling and Optimization of Abrasive Flow Machining of Al Alloy

Abrasive flow machining (AFM) is used for processing the precision parts with inaccessible area to accomplish very high amount of surface finish and accuracy. A number of researchers have investigated to study different aspects of abrasive flow machi...

Micro-Machining of Channels using a High Pressure Abrasive Slurry Jet Machine (HASJM)

Abrasive slurry jet micro-machining (ASJM) uses a premixed slurry of abrasive and water cut and mill a variety of ductile and brittle materials, usually at relatively low pressures and particle velocities. In this paper, a high-pressure (up to 250 MP...

Abrasive Waterjet Micro Machining of Non-Conventional Materials for Industrial Applications

The waterjet technology is enjoying considerable success in industrial processing applications. This is due to its extreme flexibility in machining various materials and geometries and to the limited thermal or mechanical side effects produced on the...

Analysis of Balling Phenomenon in Micro Direct Laser Metal Deposition

The balling phenomenon in Direct Laser Metal Deposition (DLMD) of AISI 316L Stainless Steel powder micro features is investigated. The influence of process parameters such laser power, laser scan speed, position of the working plane and powder feed r...

Numerical Simulation of 3D Additive Manufacturing Process

The 3D UV additive production system employs a photopolymerization to build up thin layers of a part of 3D-object. We developed a one-dimensional mathematical model of the photopolymerization kinetics to elucidate the conversion of monomer and shrink...

Study on Plasma of Micro-Forming Fields Activated Sintering Technology

In order to study whether plasmas exist between powder particles during the densification of low-temperature and fast-forming of micro-forming fields activated sintering technology (Micro-FAST), pure copper powders were chosen purposely in this paper...

Aerosol Jet Printed PEDOT:PSS Strain Gauges on FDM Printed Substrates

The growing demand in cheaper, more advanced and customized smart products require new and innovative manufacturing solutions. One of the manufacturing technologies which can provide a possible answer to this demand is Additive Manufacturing (AM). Th...

An Electrokinetically-Driven Microfabrication Process for Additive Manufacturing Applications

Electrokinetic forces play an increasingly dominant role in micro-size domain. In the present work we describe a microfabrication process based on the combination of electrokinetic forces and electropolymerization of pyrrole. The described electrokin...

Tissue Cutting with Bio-Inspired Biopsy Punches with Serrated Edges Accompanied by Vibrational Motions

This paper reports on a study and application of serrated cutting edges and of vibrational motion on tissue cutting to reduce the insertion force for commercial and bio-inspired biopsy punches (BPs). The proposed concept mimics a mosquito's maxilla, ...
Giovannini, M Collaboration

Micro Feature Fabrication by Biomachining along with Fine Tuning of Process Parameters for Increasing Metal Removal Rate

Biomachining has been developed over several years to make use of metabolic activity of microorganisms for micro fabrication. Many researchers have reported biomachining capabilities for micromachining. In present study, the influence of different pr...

Nanometer-Scale Machining of Gallium Arsenide

In this study, nanometer-scale scratch experiments were performed with a gallium arsenide (GaAs) semiconductor using an atomic force microscope (AFM) driving mechanism with a high-rigidity diamond tip cantilever. The relationship between the crystal ...

New Fabrication Method of Metamaterial Resonator by Self-Organization Method

A new fabrication method of metal resonators on a quartz glass substrate for optical metamaterials is proposed in this paper. Minute metal resonators are useful for optical metamaterials, which have artificial optical properties that have not existed...

Efficient Fabrication Methods of Various 3D Nanodot Array Structures

New fabrication methods of various three dimensional (3D) Au nanodot arrays are proposed in this paper. These processes utilize single layer Au nanodot arrays fabricated by the templated thermal dewetting method. Multilayer nanodot array is fabricate...

Study by a Cycling Voltammetry of Carbon-Based Nanocomposites with Cu-Sn, Co-Sn, Ni-Sn Nanoparticles for Energy Storage

Intermetallic Cu-Sn, Co-Sn, Ni-Sn nanoparticles have been synthesized through a template borohydride reduction using a carbon-containing support in a mixture of aqueous solutions of CuCl2.2H2O, CoCl2.6H20, NiCl2.6H2O, and SnCl2.2H2O salts at the corr...
Markova, I Collaboration

PCB-Based Multi-Spinnerets for High-Efficiency Electrospinning Piezoelectric nonwoven Fiber Fabrics

Fibrous piezoelectric structures are highly desirable for wearable sensors to improve personalized healthcare. In this study, PCB (printed circuit board)-based multi-spinnerets were used to efficiently electrospin the nonwoven fiber fabrics (NFFs). M...
Yen, CK Collaboration

Analysis of the Bubble Defects in R2R UV Micro-Imprinting Process

Bubble defect is a major problem in R2R UV imprinting of micro pyramid arrays. It renders the structure incomplete and significantly downgrades the optical performance of its light reflection ability. This study aims to investigate the influence of p...
Wu, H Collaboration

The Effect of Distribution of UV Light on Elastic Modulus of UV Cured Film in Roll-to-Roll UV Nanoimprint Process

The Roll-to-Roll UV nanoimprint process (R2RUVNIP) is a promising technology to fabricate nanostructure on flexible films. In nanoimprint process, there is an issue how to find a feasible operating condition to peel-off the UV resin from the mold. To...

Manufacturing and Characterization of Coaxial Microfibers with Different Molecular Weights using Melt Electrospinning Technique

A core-shell microfiber can be fabricated using a coaxial electrospinning technique. The coaxial electropinning technique is prevalent in solution electrospinning to fabricate nanofibers. However, the coaxial technique using melt electrospinning setu...

Joule Heating based Sublimation Thinning of Suspended Nanofibers

Electro-Mechanical Spinning (EMS) technology has evolved from electrospinning to achieve greater deposition control of individual nanofibers. This paper aims to investigate the morphology change of electro-mechanically spun suspended carbon nanofiber...

Design of Terahertz Waveguide Filters for Hybrid Manufacturing based on CNC Milling and Laser Micro-Machining

This paper presents the design of terahertz waveguide filters, operating in the WR-3 frequency range of 220-325 GHz, which are ideally suited to a hybrid manufacturing platform. The platform considered in this research combines the capabilities of CN...

The Modern Concept of Microsensors/Microsystems Integration at Wafer Level by High Accuracy Micromanufacturing Processes

The explosive demand for increasing miniaturization of microelectronics devices as well as mobile communication systems as well as microsensors / microsystems diversity of shapes and functional capabilities with the evershrinking form factor, has for...

Effects of Initial Surface Texture on Pulsed Laser Micro Polishing of S7 Tool Steel

The objective of this work is to study the influence of the initial surface texture on the surface roughness and spatial frequency content of S7 tool steel after pulsed laser micro polishing (PLµP). PLµP is a non-contact surface finishing process tha...

Laser Polishing of Metallic Freeform Surfaces

As a new approach for automated polishing of metallic freeform surfaces, laser polishing could support or replace time-consuming and cost intensive manual polishing in the near future. This new technique is based on using laser radiation to remelt a ...

Microstructure of S7 Tool Steel after Pulsed Laser Micro Polishing

This work presents new experimental investigation on the microstructural changes that occur during micro-scale laser melting of steel. Significant prior work has focused on the effect of larger-scale laser polishing and solid-state laser hardening on...

Improving Laser Microcutting Quality of AZ31 Mg Alloy by Submerged Cutting for Manufacturing of Biodegradable Stents

Cardiovascular stents are typically produced by laser microcutting of tubular precursors. The cutting edge quality is a key factor for the correct interaction between the human body and the inserted biomedical device. The reduction or elimination of ...
Demir, AG Collaboration

Improving the Flexibility of Micro Injection Moulding by Exploiting fs-laser Micro Milling to Realize Mould Inserts with Complex 3D Microfeatures

The concept of replaceable micro cavities can be applied in the design of moulds for different applications and the efficiency of the product development stage is greatly improved. The inserts allow easy testing of the design prototypes especially in...

Single Step Generation of Microstructured Hydrophobic Aluminium Surface by ns Laser

Thin sheets of aluminium with thickness of 100 µm are micromachined with ultraviolet laser pulses of 30 ns, to create hydrophobic surface in a single step processing. The laser machined thin Al surface is free from cracks and thermal deformation. How...

Manufacture of Micro-Hole Array for Planar Porous Aerostatic Bearing with Dual Restrictive Layer using Picosecond Laser

In the development of micro/meso machining systems, aerostatic bearing has become the key technology to achieve the accuracy requirement. The porous air bearing with high load capacity, good stiffness and stability characteristics were suitable for t...

Analysis of Shape Geometry of Micro-Channels Fabricated by Laser Milling

This paper presents an experimental analysis on manufacturing and geometrical characterization of micro-channels fabricated on AISI 316L steel by laser milling. Micro-channels, with rectangular section, were fabricated keeping the process parameters ...

Study for Injection Molding of the Intra-oral Scanner Lenses

In this study, we developed the technology for intra-oral scanner lenses. The lenses were 11mm in diameter, 8.26mm in effective diameter and 25mm in focal length. And it was comprised of three aspherical optical lenses (A, B and C). The mold design w...
Huang, SJ Collaboration

Effect of Manufacturing Conditions on the Mechanical and Corrosion Behavior of Micro-Textured AZ91D Prepared by Powder Metallurgy

In this study, an attempt was made to design and manufacture a Mg-based biomedical implant plate with controlled porosity and micro-textured surface. AZ91D Mg powders of different size distribution were compacted under compaction pressures of 150, 20...
Tahmasebifar, A Collaboration

Hybrid Processes for Manufacturing of Multi-Material Micro Parts

For the successful industrial implementation of Micro System Technology products, technologies for the production of medium and large numbers of components consisting of different materials must be available. This demand leads to the challenge of com...

An Inconel based Feedstock and its Identification of Rheological Constitutive Model for Powder Injection Moulding

An Inconel based feedstock for manufacture the super alloy components by powder injection moulding is introduced. The relationship between the rheological properties and different parameters of the feedstock is investigated, based on a prescribed mod...

Viscoelasitic Characterisation, Numerical Simulation and Experimental Investigation of Micro Hot Embossing Process with Amorphous Thermoplastic Polymers

Hot embossing process has been considered as one of the most cost-efficient and fast processes in the manufacturing of micro or nano components. This paper is focus on the numerical simulation and experimental investigation of micro hot embossing pro...

A High Throughput Micro-Embossing Manufacturing Cell for Microfluidic Device Manufacture

The emergence of disposable low-cost microfluidic devices for various medical diagnostic tests brings with it a need for high volume high quality production methods for this micro-scale product. This paper reports on the development of a manufacturin...
Hardt, DE Collaboration

Relationship of Surfaces of Micro Mold and Embossed Plastic Part

In order to study relationships of surfaces of micro hot embossed plastic parts and micro-molds, extensive experiments of hot embossed molding are carried out using micro molds prepared by micro electrical discharge machining (EDM). The surfaces of h...

Replication Fidelity Assessment in Nano Moulding

Innovations in nanotechnology propose applications integrating micro and nanometer structures fabricated as master geometries for final replication on polymer substrates. The possibility for polymer materials of being processed with technologies enab...

An Experimental Report of the Force Required to Demould Parts Replicated by Injection Moulding

Demoulding, or ejection, is a critical stage of replication processes. It can be a particular problem for smaller parts which are weaker, and thus more prone to damage, during ejection from the mould. This paper describes a series of replication tria...

A Novel Setup for Cavity Pressure and Temperature Measurements in Micro-Injection Moulding

In injection moulding, continuous monitoring of temperature and pressure parameters in the mould cavity is very important for process control and optimization. In the micro injection moulding process, however, it is more difficult to measure the cavi...

Injection Molding of Nano-Structured Polylactic Acid Surfaces for Bone Regeneration Studies

In this work, nano-structured surfaces were manufactured by injection molding to obtain osteoinductive materials for bone replacement applications. A polylactic acid was selected as injected material, due to its better replication capabilities compar...
Marco, S Collaboration

Analysis of the Influence of Part Thickness on the Replication of Microstructured Surfaces by Injection Molding

The micro injection molding process is nowadays considered as a suitable technology for manufacturing microstructured surfaces. The molded part geometry influences the filling flow of the melt inside the mold cavity as well as the final quality of th...

Novel Characterisation Methods of Microneedles Manufactured by Micro-Injection Moulding

There are wide variety of methods of manufacture of microneedles (MN) and a diversity of MN designs and application methods. In this study we develop new routes for MN manufacture primarily using micro-injection moulding (mIM) processes with a range ...

Influence of Micro Injection Moulding Process Parameters on Mechanical Characteristics of POM and POM/CNT Composites

Micro injection moulding is one of the most used thermoplastic technology for the manufacturing of miniaturized products, due to the high productivity of the process. Thermoplastic micro manufacturing has reached nowadays an incredible spread: polyme...

Design and Fabrication of a Polymeric Micro-Filter

This paper reports on design, fabrication and characterization of a micro-filter for hearing aid, dialysis media and inhaler. The microfilter, with mesh of 80 µm, is fabricated by micro injection moulding process in polymeric material (Polyoxymethile...
Surace, R Collaboration

Injection Moulding Simulation of a Microreactor Baseplate

Within the past two decades, microreactor technology has evolved from a highly advanced toy for chemical engineers to a versatile tool for chemical synthesis. MST technologies, such as photolithography and etching, are mostly used for prototyping of ...

Mould Design and Material Selection for Film Insert Moulding of Direct Methanol Fuel Cell Packaging

This paper presents the mould design for an injection moulding (IM) process for the production of a methanol container for the use in small, passive Direct Methanol Fuel Cell (DMFC) systems, which are intended to be used in behind-the-ear hearing aid...
Wohner, T Collaboration

Investigation of Air Entrapment and Weld Line Defects in Micro Injection Moulded Thermoplastic Elastomer Micro Rings

The micro injection moulding (µIM) process for the production of micro rings in thermoplastic elastomers (TPE) was investigated and optimized. The objective was to minimize the formation of air entrapments and the depth of micro weld line created on ...

Effect of Vacuum Venting Process on Replication of Nano/Micro-Features in Microinjection Molding: Quantitative and Qualitative Analysis

Vacuum venting is one of the methods proposed to improve feature replication in microparts that are fabricated using micro injection molding (MIM). A qualitative and quantitative study has been carried out to investigate the effect of vacuum venting ...

Prototyping Polymer Microfluidics using a Flexible Injection Mould: Case Studies of using Various Microstructured Tools

Prototyping microfluidic devices using laboratory based methods, such as PDMS casting, is faced with barriers for commercialization, because of differences of material properties, scale-up capability, bonding and surface treatment, etc. Using commerc...

Investigation of Inhomogeneous Deformation Behavior of Pure Copper Foils in Micro Deep Drawing

The inhomogeneous deformation behavior of pure copper foils in micro deep drawing is investigated by experiment and numerical simulation. In the experiment, the sheets with different thickness are firstly annealed to obtain different grain sizes. In ...

Improved Tool Performance in Microblanking of Thin Metal Foils through Defined Cutting Edge Modification of Silicon Punches

The progressive miniaturisation of metallic micro parts comes along with high requirements concerning economical and qualitative aspects. An appropriate fabrication method for meeting these demands presents micro forming and blanking. Although these ...

Scalability of Conventional Tube Hydroforming Processes from Macro to Micro/Meso

Though in its infancy, the field of micro tube hydroforming has had recent advancements that make it possible to consider scaling it to the production level. This will require the designers of future micro tube hydroforming process to determine which...

Elastic-Plastic Damage Behavior Identification in Micro Scale Length from Instrumented Micro-Single Point Incremental Forming

The present paper describes a complete identification and validation procedure of a damaged elastic-plastic law to determine the material parameters allowing accurate simulation of the micro-SPIF process. At first, tensile tests are initially carried...

Microstructure Change by Micro Metal Forming of Sheet Iron

This paper aims to develop a new thermo-mechanical control process (TMCP) for micro metal forming, and as the first step to the goal, plastic deformation characteristics of crystal grains and its effects to microstructure changes in a shearing test o...

Dimensional Accuracy and Deformation Behaviors in Meso-Scaled Progressive Forming of Two-Level Flanged Parts

With the increasing demand on the quality and productivity of miniaturized parts, fabrication of micro-parts directly using sheet metal is proven to be promising and efficient for mass production. This study aims at fabricating the micro-scaled cylin...

Experimental Study of a Microforging Process of Parallel Ribs from Metal Strip

Bulk microforging processes from metal strip are increasingly adopted by manufacturers in fields like electronics and micromechanics. These kinds of processes offer on the one hand a solution to handling problems with microparts and on the other hand...

Influence of Lubricant Viscosity on Punch Force in Strip Drawing Test

In macro forming it is known that the punch velocity has an influence on the deep drawing process. This influence is due to the velocity depending friction behavior between workpiece and tool. In micro range new possibilities in process control open ...

Replication of Prismatic Microstructures by Electromagnetic Embossing

Electromagnetic forming is a high speed forming process that is already established in the macro world. Due to its advantages like high deformation rate and cheaper tools it is introduced to micro forming. In this research the replication of prismati...

Effect of Tribological Condition on Forming Minute Parts by Micro-Meso Extrusion of A6063 Alloy

The recent trend towards miniaturization of products and technology has boosted a strong demand for such metallic micro-parts with micro features and high tolerances. Conventional forming technologies, such as extrusion and drawing, have encountered ...

Dynamic Model of One-Dimensional Piezoelectric Actuators in Micro-Forming

One-dimensional piezoelectric actuators are applied in micromachining systems. To generate accurate movement in micrometer/nanometer scale, a dynamical model of the piezoelectric actuator is in need. A new approach of dynamic modeling of the actuator...
Hu, P Collaboration

High Precision Coupling System

The mass production of plastic parts containing micro structures in optical quality requires molds with corresponding surface quality. These micro structured molds can be produced by ultra precision cutting (UPC). To produce a high surface quality th...
Foremny, E Collaboration

Overview the Fundamental Issues in PCB Micro-Drilling Industry

This paper represents the fundamental issues of high speed micro-drilling tools in application of PCB drilling industry. Moreover, high accurate levels of machine and process capability are demanded to ensure manufacturing productivity in MiB, BGA an...

Design of a Micro Machine Tool with Double-Toggle Mechanisms

Micro machining plays an important role in manufacturing the miniature products which are made of various materials with complex 3D shapes and tight machining tolerance. In this paper, a new design of CNC micro machine tool with double-toggle mechani...

Adaptive Control Optimization in Micro-Machining of Hardened Steels

Nowadays, the miniaturization of many consumer products is extending the use of micro-machining operations in conventional shop floors with high quality requirements. However, the impact of cutting-tool wear on part dimensions, form and surface integ...

The Effect of Intermittent Grinding on Burrs and Force Generated by Functional Textured Wheel

Engineered grinding wheel is a recent innovation towards consistent and exceptional performance in grinding operations. Functional textured grinding wheel could reduce not only the burr dimensions but also the grinding forces significantly (18.1%-74....

Modeling and Manufacturing of Mechanically Machined Hologram based on Repeated Arcs and End-Milling

Holograms are also obtained easily by simple mechanical machining of repeated arcs though general holograms are manufactured by wet-etching technology or laser machining technology. A human can feel the image depth at the mechanically machined hologr...

Effects of the Cutting Edge Serrations on the Brittle Fracture in the Glass Milling

This report discusses about effects of the tool edge serration on the brittle cracking in the ball endmill process on the soda lime glass. To observe the effects of the serration, cutting experiment was performed by the single crystal diamond (SCD) b...

Machinability on Micro-End Milling Process of Ti-6Al-4V with Nanofluid Minimum Quantity Lubrication using Hexagonal Boron Nitride Particles

This paper investigates the characteristics of micro end-milling process of titanium alloy (Ti-6Al-4V) using nanofluid minimum quantity lubrication (MQL). A series of micro end-milling experiments are conducted in the meso-scale machine tool system w...

An Experimental Study on Micro Milling of PZT Deposited Si Wafer

The micro milling of PZT thin film deposited silicon wafer was studied with various feed rate and depth of cut. The effects on the cutting performance by the PZT thin film, tool size, and the deposited diamond thin film on the micro mill were analyze...

Process Parameters Optimization for Micro-Milling of EBM Ti6Al4V Titanium Alloy

The development and use of new processes, in particular Additive Manufacturing (AM) technologies, are increasingly applied thanks to the advantages they offer in the fabrication of parts made of difficult-to-cut metals, such as titanium and cobalt al...

Influence of the Micro-Patterned Inserts on the Characteristics of the Hard Turning Process

The micro-patterned insert was adopted to reduce cutting forces, friction coefficients and tool wear during hard turning. The pattern on insert surface was fabricated by electro discharge machining (EDM). Then, the cutting forces and chip morphologie...

Size Effect in Micromilling of Superduplex Stainless Steel

Size effect is a phenomenon which can explain the difference of the behavior of a material in a manufacturing process in reduced scale, that is, the difference between the mechanics of cutting in micro and mesoscale. This phenomenon in micromilling d...

Rapid and Autonomous Optical Characterization of Tool Diameter and Cutting Edge Radius on Micro End Mills

A novel metrology method is presented for rapidly and autonomously characterizing the diameter and cutting edge radius of micro end mills using two-step optical imaging and image post-processing. This method is intended to improve on manual micro end...
Morrow, JD Collaboration

Microtool Wear Measurement and Assessment

Wear is an unavoidable phenomenon in tooling. Many studies have been conducted to try to reduce it. In the case of microtools, the problem of wear is even more difficult to approach. Microtools wear mechanics and characteristics are not well known ye...

Improvement of Procedures for High Accuracy Micromilling of Flat Surfaces

All the resources involved in micromilling operations (machine tool, tool, fixture, workpiece) have to be accurately managed to improve the final workpiece quality. Special attention has to be paid also to system thermal stability, micromilling proce...

Machining Error in Micro Dimple Milling

A micro dimple machining is discussed to control the surface functions with the micro-scale structures on the solid surfaces. The micro dimples are machined in milling with the inclined ball end mill. When an inclined two flutes end mill removes the ...

Analysing Machining Errors Resulting from a Micromilling Process using CT Measurement and Process Simulation

Due to the delicate structures of a micromachined component, the analysis of machining errors is a difficult task. However, in order to optimize the machining outcome, it is necessary to identify the source of the errors. By using a CT measurement of...

Test for Evaluating the Performance of Micro Milling Processes

The growing interest of several industrial fields (biomedical, medical, electronic, defence, aerospace, etc) on miniaturized components leads to an increased interest on micro cutting processes. When approaching these processes, phenomena that can be...

The Effect of Dynamometer Dynamics on the Measurement Accuracy of Micromachining Forces

Accurate measurement of micromachining forces is central to gaining fundamental understanding on process mechanics and dynamics of micromachining. Multi-axis dynamometers are commonly used to measure the machining forces in 3D nature. However, measur...

Modeling of Micro Drill Dynamics Based on 2-D Finite Element Method

This paper models the coupled torsional-axial dynamics of the micro drill due to pre twisted flute geometry. 2-D finite element method is used to obtain the warping constants considering the actual geometry of drill cross section. Natural frequencies...

Parametric and Non-Parametric Identification of Micromilling Dynamics

Monitoring and control of micromilling process represents a challenging task in metal cutting. The lack of static and dynamic stiffness due to the small tool size represents one of the most important issues that has to be tackled in order to provide ...

Modeling Three-Dimensional Dynamics of Rotating Micro-Endmills Including Attachment Errors

This paper presents an analytical modeling approach to predict the three-dimensional (3D) dynamics of rotating micro-endmill dynamics considering the attachment errors. Since the fluted section of the cutting tools presents 3D coupled motions such as...

Effect of Lubrication on Dynamic Instability in High-Speed Micromilling of Ti-6Al-4V

Micromilling can create complex 3D features required in Ti-alloys which find applications in biomedical implants and aerospace components. However, for difficult-to-cut materials, micromilling is usually performed at low feed rates and high spindle s...

Chatter Stability Improvement in Micro Milling with Axial Vibrations

Productivity in machining operations is limited by chatter, which is caused by interactions between the tool and the workpiece. In order to suppress chatter, increased dynamic stiffness and reduced forces are vital. In this study, we employed the vib...

Multiscale Analysis of Nano-Scale Elliptical Vibration Cutting via Molecular Dynamics Simulations

Molecular dynamics (MD) simulations of elliptical vibration cutting were conducted in the paper to investigate the correlation between the vibration conditions and the defect mechanism in the material. The interactions between the copper atoms were d...

Performance of Micro End Milling Force Prediction on Aluminum 6061-T6 with 3D FE Simulation

Micro-milling is a rather complicated process to simulate due to the complexities involved, such as the geometrical, mechanical, tribological, thermal and chemical aspects. They all lead to the generation of cutting forces and consequent material rem...

Cutting Force Prediction in Micro Orthogonal Cutting by an Analytical-Numerical Coupled Model

The slip-line field model developed by Waldorf [1] for the macroscale is suitable to predict cutting forces when a large ploughing action occurs, as in micromachining, since it takes into account a rounded-edge tool. The present study considers the p...

A Predictive Model for Thin Plate Deformation in Surface Milling

Micro-fabrication of complex parts often relies on milling processes in meeting its dimensional and surface finish requirements. However, machining process generally induces residual stress on the part surface due to complex thermo-mechanical couplin...

Force Modelling in Micro-Milling of Hardened Tool Steel

Micro-milling is largely studied in the literature and quite well modelled. However, there are some issues inherent to micro-milling process such as chatter or tool deflection that are influent on cutting forces as well as cutting mechanism. To overc...

Using Voxels in the Simulation of Manufacturing Processes

The present paper introduces the use of voxels embedded in an octree structure in order to numerically simulate manufacturing processes. In particular, micro electrical discharge machining (µEDM) is used here as a case study. The involved elements (t...

Approach to Technological Modeling of Micro EDM Milling

At selection of the most appropriate machining process for a given part geometry technological process models are powerful and widely used tool. At best, technological process modelling reduces the number of process variables or at least defines the ...

Geometric-Based Modelling of Micro-EDM: Model Development and Simulation Study

This paper presents an original approach to the development of geometric-based modelling of the micro-EDM process. The work carried out so far is the first phase of the project and considers the geometric description of the erosion process. This was ...

Modelling and Simulation of the Crater Formation Process in Micro-EDM

EDM and micro-EDM have been successfully applied in industries and laboratories for decades, due to their ability to machine difficult-to-cut materials and generate complex shapes of macro to micro scales. However the fundamental issues such as the c...

Pulse Monitoring and Discrimination in Micro-EDM Milling of Si3N4-TiN Micro-Channels

In this paper, gap voltage and discharge current waveforms occurring during micro-EDM milling of micro-channels realized in a Si3N4-TiN workpiece are monitored and discriminated. The analysis is performed by implementing a design of experiment for th...

Micro EDM Milling with Low Energy Discharges and Thin Microtool

The aim of this paper is to report on micro EDM milling of stainless steel with ultrathin and high aspect ratio microtools and explore possibilities for machining with small discharges using a ballast resistor. Machining of channels is demonstrated w...

Fabrication of an Insulated Micro Spherical Tool by using Electrophoretic Deposition and Electrical Discharge Machining

This research presents a process of micro spherical tool with an innovative helical insulating layer by using electrophoretic deposition and electrical discharge machining. The solution of methanol with silicon of carbide miniature powder was adopted...

A Study to Improve Shape Accuracy of the Hole Drilled by Micro EDM

Improvement of hole accuracy in micro-EDM drilling is studied in the paper. A novel twin helices electrode containing both right-hand helix and left-hand helix is proposed, and a method of coating a layer of glaze (i.e. enamel) on the electrode is de...

Batch Mode Die-Sinking Micro-Electro-Discharge Machining of Stainless Steel using DRIE Bulk Tungsten Electrode

This paper reports on batch mode die-sinking micro-EDM using Deep Reactive Ion Etched (DRIE) tungsten tool electrode, which is capable of producing arbitrary features of micrometer scale in stainless steels as well as other metals. The photolithograp...

Horizon 2020 call FoF 2017 5 New products for environmental sensors

Partners sought for this project concept,  Information on proposal idea...

Improvements in Debris Flushing in Micro-Electric Discharge Machining using Atomized Dielectric Spray

The paper investigates the debris flushing in micro-electric discharge machining (micro-EDM) using atomized dielectric spray. The novel technique of atomized dielectric spray in EDM involves dielectric film formation and its penetration into the inte...
Pattabhiraman, A Collaboration

Experimental Investigation of the Effect of Dielectric Conductivity on Characteristics of Micro-EDM Process

Selection and modification of dielectric has been shown to affect machining characteristics such as process accuracy, material removal rate and surface finish in micro-EDM and is being explored by many for enhanced productivity of the process for ind...
Mujumdar, SS Collaboration

Influence of Pulse Width on Micro Electrical Discharge Machining of Non-Conductive Silicon Carbide

High performance ceramics are increasingly used in technical applications due to their outstanding mechanical properties. With very high hardness, flexural strength and being highly wear and corrosion resistant even at temperatures above 1000°C, sili...
Zeller, F Collaboration

Micro-EDM-Milling and –Sinking Combined Approach for the Fabrication of Micro-Components

This paper reports the comparison of the machining performance of micro-EDM milling and sinking for the fabrication of micro-channels with controlled sloped walls realized in a hardened steel workpiece. The machining regime used for both micro-EDM si...

Comparison EDM / Dry-EDM in Microdrilling Process

In micro-EDM machining the most commonly used dielectrics are mineral oil and deionized water, that are characterised by different dielectric permittivity. As a matter of fact, the use of these dielectrics, especially mineral oil, requires proper air...
D’Urso, G Collaboration


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