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首页> 外文期刊>Journal of Mechanical Science and Technology >Toughness and fracture mechanisms of glass fiber/aluminum hybrid laminates under tensile loading
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Toughness and fracture mechanisms of glass fiber/aluminum hybrid laminates under tensile loading

机译：玻璃纤维/铝杂化层压板在拉伸载荷下的韧性和断裂机理

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摘要

Tensile properties and fracture toughness of monolithic aluminum (Al), 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 Al, fiber orientation and the Al/fiber layer composition ratio. Fracture toughnesses KC and GC 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.
机译：考察了单块铝和玻璃纤维增​​强塑料以及玻璃纤维/铝杂化层压板的拉伸性能和断裂韧性与平试样和单边缘缺口试样的断裂过程之间的关系。 GFML的弹性模量和极限抗拉强度表现出对Al的种类，纤维取向和Al /纤维层组成比的特性依赖性。 A-GFML-UD的断裂韧性KC 和GC 与GFRP-UD相当，并且远远优于整体式Al。但是，具有平行于纤维层的横向裂纹的GFML的韧性大大降低。在裂纹尖端附近的断裂区域的显微镜观察显示在各个层中的各种微裂纹模式以及纤维断裂和纤维/ Al层之间的分层。 GFML的这种破坏进展取决于纤维层的方向和Al /纤维组成比，这极大​​地影响了GFML的强度和韧性。

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