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Proceedings Paper

Acoustic damage detection in laser-cut CFRP composite materials
Author(s): Michiteru Nishino; Yoshihisa Harada; Takayuki Suzuki; Hiroyuki Niino
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Paper 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.

Paper Details

Date Published: 16 February 2012
PDF: 6 pages
Proc. SPIE 8243, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVII, 82431C (16 February 2012); doi: 10.1117/12.907469
Show Author Affiliations
Michiteru Nishino, Advanced Laser and Process Technology Research Association (Japan)
Mitsubishi Chemical Corp. (Japan)
Yoshihisa Harada, Advanced Laser and Process Technology Research Association (Japan)
National Institute of Advanced Industrial Science and Technology (Japan)
Takayuki Suzuki, Advanced Laser and Process Technology Research Association (Japan)
National Institute of Advanced Industrial Science and Technology (Japan)
Hiroyuki Niino, Advanced Laser and Process Technology Research Association (Japan)
National Institute of Advanced Industrial Science and Technology (Japan)


Published in SPIE Proceedings Vol. 8243:
Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVII
Guido Hennig; Xianfan Xu; Bo Gu; Yoshiki Nakata, Editor(s)

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