Electrical discharge machining of nonconductive materials

Зарипов, А. А.; Ashurov, Kh. B.

doi:10.3103/s1068375511030021

Cited by 6 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The major mode of material removal during EDM of nonconductive material was spalling. Zaripov and Ashurov proposed a hybrid method based on EDM and Electrochemical machining (ECM) to machine electrically nonconductive composites. A comparison was made among the different types of electrolytes and their concentration.…”

Section: Literature Surveymentioning

confidence: 99%

A study of material removal and surface characteristics in micro‐electrical discharge machining of carbon fiber‐reinforced plastics

2019

View full text Add to dashboard Cite

This article presents micro electrical discharge machining (μEDM) of carbon fiber‐reinforced plastics (CFRP) with rotating tool electrode and assisting electrode (AE). The experimental investigation majorly focused on establishing the mechanisms of material removal and surface integrity of the machined blind holes. Taguchi and regression analysis were carried out to assess the material removal rate (MRR). Analysis of variance (ANOVA) was applied to understand the significance of input parameters and their contribution toward achieving maximum MRR. The surface integrity of the machined hole and damage modes of composite constituents were also examined through micrographic images. The experiments were carried out varying the voltage, pulse duration, and tool speed at three levels. The investigations showed that μEDM process can be applied for fabricating micro holes in CFRP if assisting electrode (AE) is used to initiate the spark. From the analysis of variance (ANOVA), it was observed that the percentage contribution of voltage, pulse duration, and tool rotational speed on MRR are 75.09, 5.20, and 16.09%, respectively. The optimal condition for the highest MRR was found to be V3/T1/S3 (voltage of 170 V, pulse duration of 10 μs, and tool speed of 800 rpm). The calculated value of MRR (341,264.94 μm3/s) at the optimum level of input parameters was found to be close to the experimental MRR (340,727 μm3/s). The percentage error between the experimental and calculated value of MRR at the optimum level is very low as 0.15%. This indicates that the developed statistical model is quite significant in predicting MRR during μEDM of CFRP. POLYM. COMPOS., 40:4033–4041, 2019. © 2019 Society of Plastics Engineers

show abstract

Section: Literature Surveymentioning

confidence: 99%

A study of material removal and surface characteristics in micro‐electrical discharge machining of carbon fiber‐reinforced plastics

2019

View full text Add to dashboard Cite

show abstract

“…An increase of electrolyte concentration as well as the peak current can improve the MRR (Figure 22b,c). Zaripov and Ashurov (2011) [160] also reported about a process that combined EDM and electrochemical processing (Figure 23) for a composite non-conducting material. In this paper, the flow of current in an electrolytic media and the processing of a composite material was analyzed.…”

Section: Edm Of Non-conductive Ceramicsmentioning

confidence: 99%

Electro-Discharge Machining of Ceramics: A Review

et al. 2018

View full text Add to dashboard Cite

Conventional machining techniques of ceramics such as milling, drilling, and turning experience high cutting forces as well as extensive tool wear. Nevertheless, non-contact processes such as laser machining and electro-discharge machining (EDM) remain suitable options for machining ceramics materials, which are considered as extremely brittle and hard-to-machine. Considering the importance of ceramic machining, this paper attempts to provide an insight into the state of the art of the EDM process, types of ceramics materials and their applications, as well as the machining techniques involved. This study also presents a concise literature review of experimental and theoretical research studies conducted on the EDM of ceramics. Finally, a section summarizing the major challenges, proposed solutions, and suggestions for future research directions has been included at the end of the paper.

show abstract