유리섬유/알루미늄 혼성 적층판의 인장특성과 파괴인성 평가Evaluation on Tensile Properties and Fracture Toughness of Glass Fiber/Aluminum Hybrid Laminates
- Other Titles
- Evaluation on Tensile Properties and Fracture Toughness of Glass Fiber/Aluminum Hybrid Laminates
- Authors
- 우성충; 최낙삼
- Issue Date
- Jun-2005
- Publisher
- 대한기계학회
- Keywords
- Fiber Metal Laminates; Glass Fiber/Aluminum Hybrid Laminates; Fracture Toughness; Critical Load; Damage Tolerance; 섬유금속적층판; 유리섬유/알루미늄 혼성 적층판; 파괴인성; 임계하중; 손상 허용성
- Citation
- 대한기계학회논문집 A, v.29, no.6, pp.876 - 888
- Indexed
- KCI
- Journal Title
- 대한기계학회논문집 A
- Volume
- 29
- Number
- 6
- Start Page
- 876
- End Page
- 888
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/46329
- ISSN
- 1226-4873
- Abstract
- Tensile properties and fracture toughness of monolithic aluminum, fiber reinforced plastics and glass fiber/aluminum hybrid laminates under tensile loads have been investigated using plain coupon and single-edge-notched specimens. Elastic modulus and ultimate tensile strength of GFMLs showed different characteristic behaviors according to the Al kind, fiber orientation and composition ratio. Fracture toughness of A-GFML-UD which was determined by the evaluation of KIC and GIC based on critical load was similar to that of GFRP-UD and was much higher than monolithic Al. Therefore, A-GFML-UD presented superior fracture toughness as well as prominent damage tolerance in comparison to its constituent Al. By separating Al sheet from GFMLs after the test, optical microscope observation of fracture zone of GFRP layer in the vicinity of crack tip revealed that crack advance of GFMLs depended on the orientation of fiber layer as well as Al/fiber composition ratio.
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