Study on cleavage fracture criteria of the quasi-brittle and micro-inhomogeneous materials

doi:10.1023/A:1007614505509

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	Study on cleavage fracture criteria of the quasi-brittle and micro-inhomogeneous materials
	Chen, JH; Wang, GZ
刊名	INTERNATIONAL JOURNAL OF FRACTURE
	2001-03
卷号	108 期号:2 页码:143-164
关键词	cleavage initiation fracture toughness K(1)c. local fracture stress sigma f
ISSN号	0376-9429
DOI	10.1023/A:1007614505509
英文摘要	On the bases of recent achievements on the micro-mechanism of cleavage this: paper analyses the inherent deficiencies of the stress intensity factor K-I which is used to evaluate the fracture toughness of quasi-brittle and micro-inhomogeneous materials. The K-I parameter can uniquely determine the field intensity ahead of a crack tip in the condition of elastic and small scale yielding (SSY). However, the K-I cannot uniquely determine the critical condition triggering the cleavage fracture in a quasi-brittle and inhomogeneous steel where the cleavage fracture process is not a direct extension of the precrack but is initiated at a variable distance from the precrack tip. The variable distances of cleavage initiations invoke varied critical values of K-I. On the bases of authors' experiments, this paper analyses the physical meaning of the local fracture stress sigma (f), its stability and the feasibility to be used as an engineering parameter for assessing the fracture toughness.
WOS研究方向	Materials Science ; Mechanics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000167732700004
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/35936]
专题	兰州理工大学
通讯作者	Wang, GZ
作者单位	Gansu Univ Technol, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Chen, JH,Wang, GZ. Study on cleavage fracture criteria of the quasi-brittle and micro-inhomogeneous materials[J]. INTERNATIONAL JOURNAL OF FRACTURE,2001,108(2):143-164.
APA	Chen, JH,&Wang, GZ.(2001).Study on cleavage fracture criteria of the quasi-brittle and micro-inhomogeneous materials.INTERNATIONAL JOURNAL OF FRACTURE,108(2),143-164.
MLA	Chen, JH,et al."Study on cleavage fracture criteria of the quasi-brittle and micro-inhomogeneous materials".INTERNATIONAL JOURNAL OF FRACTURE 108.2(2001):143-164.