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Near-infrared Laser-induced Thermal Damage on Carbon Fiber Reinforced Plastics

Title
Near-infrared Laser-induced Thermal Damage on Carbon Fiber Reinforced Plastics
Author
윤성희
Advisor(s)
장경영
Issue Date
2017-08
Publisher
한양대학교
Degree
Master
Abstract
Thermal damages to carbon fiber reinforced plastics (CFRP) subjected to continuous wave near-infrared (CW NIR) laser irradiation are investigated. CFRP specimens are illuminated with a 1070 nm wavelength CW NIR laser. While the laser beam irradiates the samples, an infrared thermometer measures the surface temperature and a charge-coupled device camera collects images. After laser irradiation, the surface morphology of each specimen is examined. The experimental results show that an ignition phenomenon occurs on the CFRP surface first. Then, with increasing irradiance or irradiation time, swelling phenomenon and penetration ensue. From the experiments, ignition and penetration times are measured according to the laser power. A convection effect during swelling and penetration is also discussed. A numerical model for ignition is developed based on heat transfer analysis
the simulation results are in good agreement with the experimental findings.
URI
http://hdl.handle.net/20.500.11754/33483http://hanyang.dcollection.net/common/orgView/200000431008
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > MECHANICAL CONVERGENCE ENGINEERING(융합기계공학과) > Theses (Ph.D.)
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