| Damage Effect on Glass Fibre Reinforced Plastics under Airflow by a Continuous Wave Laser |
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Kwang Hyun Lee, Wan-Soon Shin, Eung-Cheol Kang |
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Advanced Technology Agile Development Center, Institute of Defense Advanced Technology Research, Agency for Defense Development |
| 연속발진 레이저에 의한 공기 유동에 노출된 유리섬유 강화 플라스틱 손상효과 |
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이광현, 신완순, 강응철 |
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국방과학연구소 국방고등기술원 첨단기술연구센터 |
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| Abstract |
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We analyzed the damage effect on Glass Fibre Reinforced Plastics(GFRP) under air flow by irradiation of continuous wave near-IR laser. Damage process and temporal temperature distribution were demonstrated and material characteristics were observed with laser intensity, surface flow speed and angle. Surface temperature on GFRP rapidly increased with laser intensity, and the damaged pattern was different with flow characteristics. In case of no flow, penetration on GFRP by burning and flame generation after laser irradiation was appeared at once. GFRP was penetrated by the heat generated from resin ignition. In case of laser irradiation under flow, a flame generated after burning extinguished at once by flow and penetration pattern on GFRP were differently shown with flow angle. From the results, we presented the damage process and its mechanism. |
| Key Words:
CW Laser, GFRP, Air Flow, Laser Damage Effect |
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