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Design and Analysis of CFRP Drilling by Electrical Discharge Machining
Luis Roldan-Jimenez1, Fermin Bañon1, Ana P Valerga1
1Department of Mechanical Engineering and Industrial Design, School of Engineering, University of Cadiz, Av. Universidad de Cadiz 10, E-11519 Puerto Real, Cadiz, Spain.
Polymers
|April 12, 2022
Summary
This study characterizes electrical discharge machining (EDM) drilling for composite materials, identifying optimal parameters for hole quality. Findings establish relationships between machining variables and hole characteristics for improved performance.
Area of Science:
- Materials Science
- Manufacturing Engineering
Background:
- Electrical Discharge Machining (EDM) is a novel drilling method for composite materials.
- Lack of consensus exists regarding EDM parameters influencing composite drilling quality.
Purpose of the Study:
- To characterize the EDM drilling process for unidirectional composite materials.
- To evaluate the influence of cutting parameters on final hole quality.
- To establish optimal parameter ranges for superior performance.
Main Methods:
- Investigated macrogeometric aspects (conicity, diameter) and microgeometric aspects (surface quality).
- Assessed material integrity and electrode wear via visual inspection.
- Developed predictive models and contour diagrams for parameter-output relationships.
Main Results:
- Established the influence of various cutting parameters on hole quality.
- Identified parameter ranges yielding the best drilling performance.
- Created predictive models correlating input and output variables.
Conclusions:
- Characterization provides a basis for optimizing EDM drilling in composites.
- Predictive models offer a direct relationship between machining parameters and hole quality.
- Findings guide the selection of EDM parameters for enhanced composite drilling.
