레이저 간섭계를 이용한 GFRP평판의 충격속도에 따른 손상평가
Damage Evaluation of GFRP Plate Using Shearography by Impact Velocity
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초록
The recent development of techniques in high-tech industries can be categorized into technical advances for safety and convenience and mechanical technology advancements for being ecologically friendly and lightweight. Under such circumstances, GFRP (Glass Fiber Reinforced Plastics), which is one of the representative lightweight materials, has attracted attention. In this study, GFRP flat plate, which is one of the composite materials for light weight, was subjected to free fall and high speed impact through GFRP flat plate to evaluate internal damage by external force such as external impact. The internal damage was evaluated and the following conclusions were obtained. In the damage evaluation according to the impact velocity of the GFRP plate, even if the impact energy collides with the same impact energy, the smaller the mass of the impact body and the faster the speed, the larger the damage amount in the impact. Therefore, it is possible to evaluate the damage of GFRP plate by shearography.
Abstract
The recent development of techniques in high-tech industries can be categorized into technical advances for safety and convenience and mechanical technology advancements for being ecologically friendly and lightweight. Under such circumstances, GFRP (Glass Fiber Reinforced Plastics), which is one of the representative lightweight materials, has attracted attention. In this study, GFRP flat plate, which is one of the composite materials for light weight, was subjected to free fall and high speed impact through GFRP flat plate to evaluate internal damage by external force such as external impact. The internal damage was evaluated and the following conclusions were obtained. In the damage evaluation according to the impact velocity of the GFRP plate, even if the impact energy collides with the same impact energy, the smaller the mass of the impact body and the faster the speed, the larger the damage amount in the impact. Therefore, it is possible to evaluate the damage of GFRP plate by shearography.
참고문헌 (6)
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- Chae, I. S., "Evaluation on GFRP Plate Using Optical Measurement Technique in Variation of Impact Velocity", pp.2017
- Kim, K. H., "Material Properties Reserch of CFRP Lamina", Laminate According to Staking Thickness, Chosun university, 2016
- 김형석, "GFRP 복합재료의 압축성형에서 표면요철에 미치는 성형조건의 영향", 대한기계학회논문집 A, 34(11), pp.1649~1657 (2010), 대한기계학회
- Kim, T. I., "Manufacturing and Characterization of Glass Fiber", Polypropylene Prepreg for Automotive Bumper Beam, Chosun university, 2013
- 김진우, "GFRP 복합재료의 섬유 배향과 함유율이 인장강도와 고속충격 흡수에너지에 미치는 영향", 박사, 정밀기계공학, pp.2008