Experimental Analysis on Delamination Damage by Acoustic Emission in High Speed Drilling of Carbon Fiber Reinforced Plastics

Xiao Jiang Cai; Sheng Qin; Qing Long An; Hong Zhou Zhang; Shu Han; Ming Chen

doi:10.4028/www.scientific.net/KEM.589-590.287

Paper Titles

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Study on High-Speed Milling Database of Aerospace Typical Parts
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Experimental Study on Milling of Titanium Matrix Composites
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Experimental Analysis on Delamination Damage by Acoustic Emission in High Speed Drilling of Carbon Fiber Reinforced Plastics
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Ultra-High-Speed Grinding — Theoretical Basis and Development of a Grinding Machine Tool
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Research on Anti-Burnt Method during Machining Complex Titanium Alloy Aircraft Structural Parts
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Preparation of TiB₂/WC/h-BN Micro-Nano Composite Gradient Self-Lubricating Ceramic Tool Material
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Research on Wear Mechanism of Self-Sharpening Fine Super-Hard Abrasive Tool
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 589-590Experimental Analysis on Delamination Damage by...

Experimental Analysis on Delamination Damage by Acoustic Emission in High Speed Drilling of Carbon Fiber Reinforced Plastics

Abstract:

Carbon fiber reinforced plastics (CFRP) has increasing applications in aerospace and other fields, due to low density, high strength, high stiffness, great resistance to corrosion, etc. Although, delamination damages in drilling holes for assembly influence the final characteristics of CFRP components. This paper presents an experimental investigation to analyze delamination damage, in which acoustic emission and thrust force are monitored during drilling CFRP laminates to clarify the relationship between AE signals and delamination damages. The results show that delamination damage has close correlation with thrust force and acoustic emission energy. AE root mean square (rms) is recommended to be selected as AE signal parameter. Abrupt peak feature of AE rms can be used as a dependable trigger for delamination monitoring. The number of abrupt pulses of AE rms can be counted online to predict the degree of delamination damages, based on which delaminations can be monitored and controlled online.