Influence of electrical parameters and optimization of EDM performance measures on Ti-6A1-4V using DOE/TAGUCHI method
Advanced materials such as Titanium Alloys exhibit very excellent technical properties, however have only achieved partial acceptance in industrial application due to difficulties in machining. Advanced machining process such as Electrical Discharge Machining (EDM) is a potential process to ma...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2005
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7361/1/24p%20MOHD%20ZAHIRUDDIN%20MD%20ZAIN.pdf http://eprints.uthm.edu.my/7361/2/MOHD%20ZAHIRUDDIN%20MD%20ZAIN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/7361/3/MOHD%20ZAHIRUDDIN%20MD%20ZAIN%20WATERMARK.pdf http://eprints.uthm.edu.my/7361/ |
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| Institution: | Universiti Tun Hussein Onn Malaysia |
| Language: | English English English |
| Summary: | Advanced materials such as Titanium Alloys exhibit very excellent technical
properties, however have only achieved partial acceptance in industrial application due
to difficulties in machining. Advanced machining process such as Electrical Discharge
Machining (EDM) is a potential process to machine such materials. However, lack of
infonnation regarding machining process of those materials using EDM is a major
constraint. In this work Channilles Technology Robofonn 100 die-sinking EDM was
utilized to perfonn the machining of Ti-6AI-4 V and copper was used as the tool
electrode. The focus of this work is the optimization of the EDM process variables
where electrical parameters namely; intensity (I), pulse duration (Ii), pulse-off time (to)
and open circuit voltage (U) were set as design factors. The effect of these design factors
on EDM perfonnance measures or responses such as Material Removal Rate (MRR),
Volumetric Electrode Wear Rate (EW) and surface roughness average (Ra) were studied
and the optimum conditions and values of those responses were estimated. Beside that,
the overall evaluation criteria (OEC) which represents all three responses into single
index were also proposed at the finishing stage. Finally confinnation tests were
conducted to verify the estimated values and all the experimental results fall within 10%
error. Taguchi approach Design of Experiment (DOErraguchi) was utilized from
planning until analyzing the results and to assists this work, DOE software; Qualitek 4
was utilized. |
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