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Toughness and fracture mechanisms of glass fiber/aluminum hybrid laminates under tensile loading

Title
Toughness and fracture mechanisms of glass fiber/aluminum hybrid laminates under tensile loading
Author
최낙삼
Keywords
Glass fiber aluminum hybrid laminates; Tensile behavior; Fracture process; Delamination
Issue Date
2007-12
Publisher
대한기계학회
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 21, No. 12, Page. 1,937 - 1,947
Abstract
Tensile properties and fracture toughness of monolithic aluminum (At), glass fiber reinforced plastics (GFRPs) and glass fiber/aluminum hybrid laminates (GFMLs) were examined in relation to the fracture processes of plain coupon and single-edge-notched specimens. Elastic modulus and ultimate tensile strength of GFMLs showed characteristic dependences on the kind of At, fiber orientation and the Al/fiber layer composition ratio. Fracture toughnesses K-C and G(C) of A-GFML-UD were comparable to those of GFRP-UD and were much superior to monolithic Al. However, GFML with a transverse crack parallel to the fiber layer deteriorated largely in toughness. Microscopic observation of the fracture zone in the vicinity of the crack tip revealed various modes of micro-cracks in the respective layers as well as fiber fractures and delamination between fiber/Al layers. Such damage advances in GFMLs dependent on the orientation of the fiber layer and the Al/fiber composition ratio strongly influenced the strength and toughness of GFMLs.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00921585&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/107417
ISSN
1738-494X
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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