Study of the EDM performance to produce a stable process and surface modification

Liang, Jyun-De; Liao, Yunn‐Shiuan; Kao, J. Y.; Huang, C.H.; Hsu, Chun-Yao

doi:10.1007/s00170-017-1315-9

Cited by 18 publications

(10 citation statements)

References 25 publications

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“…Electric discharge machining results into a biocompatible surface that affects osseointegration of implant with body tissues, bones and environment of the body. In comparison to conventional surface modification techniques like PVD, CVD, sol-gel, anodization and thus on, EDM shows better potential for surface modification [18,19]. The benefits associated with the EDM regarding the machining of bioimplants are:…”

Section: Introductionmentioning

confidence: 99%

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

et al. 2020

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Surface modification is given vital importance in the biomedical industry to cope with surface tissue growth problems. Conventionally, basic surface treatment methods are used which include physical and chemical deposition. The major drawbacks associated with these methods are excessive cost and poor adhesion of coating with implant material. To generate a bioactive surface on an implant, electric discharge machining (EDM) is a promising and emerging technology which simultaneously serves as machining and surface modification technique. Besides the surface topology, implant material plays a very important role in surgical applications. From various implant materials, titanium (Ti6Al4V ELI) alloy is the best choice for long-term hard body tissue replacement due to its superior engineering, excellent biocompatibility and antibacterial properties. In this research, EDM’s surface characteristics are explored using Si powder mixed in dielectric on Ti6Al4V ELI. The effect of powder concentration (5 g/L, 10 g/L and 20 g/L) along with pulse current and pulse on time is investigated on micro and nanoscale surface topography. Optimized process parameters having a 5 g/L powder concentration result in 2.76 μm surface roughness and 13.80 μm recast layer thickness. Furthermore, a nano-structured (50–200 nm) biocompatible surface is fabricated on the surface for better cell attachment and growth. A highly favourable carbon enriched surface is confirmed through EDS which increases adhesion and proliferation of human osteoblasts.

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Section: Introductionmentioning

confidence: 99%

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

et al. 2020

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“…Control charts are eminently suited to the monitoring of quality performances because they monitor whether a process is in‐control or out‐of‐control . Control charts easy to plot, easy to interpret, and the control limits are easily defined, so the causes of variation in a process are easily defined . Figure shows the normal probability plots for deposition rate, electrical resistivity, and optical transmittance.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Al and Ga Co‐Doped ZnO Films on Flexible Substrates and Control Charts Monitor Deposition Process

Lin

2019

Physica Status Solidi (a)

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doped zinc oxide (AGZO) films are deposited onto flexible poly (ethylene terephthalate) (PET) substrates by radio frequency magnetron sputtering. Before the AGZO film coating, oxygen plasma etching is used to modify the surface of the PET substrate. The results show that the substrate is very hydrophilic. This study determines the effect of the deposition parameters on the structural, morphological, and optoelectronic performances of AGZO films. Based on the gray Taguchi analysis for the AGZO film coatings show that the electrical resistivity is decreased to 6.30 Â 10 À3 Ω cm and the optical transmittance is increased to 81.0%. The XRD diffraction and TEM images show that the AGZO films exhibit a hexagonal ZnO wurtzite structure. A comparison of the PET substrates that do or do not undergo plasma pretreatment, shows that the AGZO films coating there is a 4.7% improvement in elastic recovery, a 13.65% improvement in hardness H, a 1.69% improvement in the elastic modulus E, a 12.15% improvement in in H/E, and a 42.06% improvement in H 3 /E 2 . Shewhart control charts are used to monitor the deposition processes for the AGZO films. Finding shown that the deposition parameters for the films and process performance are in control and stable.

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“…Kozochkin developed the in-situ monitoring system based on vibroacoustic emission [44,45] and adopted it for the needs of electrical discharge machining (Figures 1 and 2). The preliminary study showed that the oscillations of the wire in the slot during processing might be a reason of instability and turn into the self-oscillation process, which results in the defects of the machined surfaces [46][47][48].…”

Section: Mathematical Approach and Evaluation Of Wire Amplitude Undermentioning

confidence: 99%

On Adaptive Control for Electrical Discharge Machining Using Vibroacoustic Emission

et al. 2018

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The article is related to the research of the parameters of vibroacoustic emission for development of the monitoring and adaptive control system for electrical discharge machining. The classical control system based on a response of electrical parameters does not give an adequate data in the cases of a new class of materials processing as conductive ceramics reinforced by conductive nano additives and carbon nanotubes and whiskers. The idle pulses, which are working on the destruction of the erosion products in the gap, count as working pulses. The application of the monitoring and control tools based on vibroacoustic emission gives adequate data about conditions in the working zone. The developed system is available to count only impulses involved in working on the destruction of the workpiece. The experiments were conducted on the samples of materials with a low melting point as austenitic steel and aluminum alloy, and hard alloys. The records of vibroacoustic signals were analyzed for detection of the monitoring and adaptive control criteria.

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Study of the EDM performance to produce a stable process and surface modification

Cited by 18 publications

References 25 publications

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

Fabrication of Al and Ga Co‐Doped ZnO Films on Flexible Substrates and Control Charts Monitor Deposition Process

On Adaptive Control for Electrical Discharge Machining Using Vibroacoustic Emission

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