Acoustic damage detection in laser-cut CFRP composite materials

Michiteru Nishino; Yoshihisa Harada; Takayuki Suzuki; Hiroyuki Niino

doi:10.1117/12.907469

16 February 2012 Acoustic damage detection in laser-cut CFRP composite materials

Michiteru Nishino, Yoshihisa Harada, Takayuki Suzuki, Hiroyuki Niino

Proceedings Volume 8243, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVII; 82431C (2012) https://doi.org/10.1117/12.907469
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Carbon fiber reinforced plastics (CFRP) composite material, which is expected to reduce the weight of automotive, airplane and etc., was cut by laser irradiation with a pulsed-CO₂ laser (TRUMPF TFL5000; P=800W, 20kHz, τ=8μs, λ=10.6μm, V=1m/min) and single-mode fiber lasers (IPG YLR-300-SM; P=300W, λ=1.07μm, V=1m/min)(IPG YLR- 2000-SM; P=2kW, λ=1.07μm, V=7m/min). To detect thermal damage at the laser cutting of CFRP materials consisting of thermoset resin matrix and PAN or PITCH-based carbon fiber, the cut quality was observed by X-ray CT. The effect of laser cutting process on the mechanical strength for CFRP tested at the tensile test. Acoustic emission (AE) monitoring, high-speed camera and scanning electron microscopy were used for the failure process analysis. AE signals and fractographic features characteristic of each laser-cut CFRP were identified.

Citation Download Citation

Michiteru Nishino, Yoshihisa Harada, Takayuki Suzuki, and Hiroyuki Niino "Acoustic damage detection in laser-cut CFRP composite materials", Proc. SPIE 8243, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVII, 82431C (16 February 2012); https://doi.org/10.1117/12.907469

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