A Micromechanical Model for Mode I Delamination in Composites

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Title:	A Micromechanical Model for Mode I Delamination in Composites
Other Titles:	複合材料的模式－脫層之微機械模型
Authors:	曾敏烈
Contributors:	工學院
Keywords:	脫層複合材料微機械模型母材纖維韌性 delamination composite micromechanical model matrix fiber toughness
Date:	2004-06-01
Issue Date:	2012-04-25 13:07:26 (UTC+8)
Abstract:	先進的纖維複合材料在工程材料中提供最高的單位質量強度和剛性。而脫層破壞是纖維村料在遠低於公稱負荷下提早破壞的限制因素，所以，對於脫層破壞的機制更進一步的了解對提高複合材料的應用很有助益。本研究提出一個微機械模型來決定單向加強的複合材料開口式（模式一）脫層破壞的韌性。我們研究了母材和介面的相對重要性以及纖維體積比對脫層韌性的影響。 Advanced fiber materials provide the highest specific strength and stiffness among engineering materials. Delamination fracture is the limiting factor for premature failure at loads much lower than the nominal fiber load-bearing capacity. Therefore, a better understanding of the mechanism associated with delamination fracture is beneficial. Here, a micromechanical model is proposed to determine the opening mode (Mode Ⅰ) delamination fracture toughness of a unidirectionally reinforced material. The relative importance of the matrix and the fiber-matrix interface as well as the effect of volume fraction on the delamination toughness is investigated.
Relation:	華岡工程學報 18期 p.31 -34
Appears in Collections:	[College of Engineering] Chinese Culture University Hwa Kang Journal of Engineering

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