Fracture toughness determination of Ti(3)Si(Al)C(2) and Al(2)O(3) using a single gradient notched beam (SGNB) method

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	Fracture toughness determination of Ti(3)Si(Al)C(2) and Al(2)O(3) using a single gradient notched beam (SGNB) method
	D. T. Wan; Y. W. Bao; J. Z. Peng; Y. C. Zhou
	2009
发表期刊	Journal of the European Ceramic Society
ISSN	0955-2219
卷号	29 期号:4 页码:763-771
摘要	In this work, we suggest a new and simple method named single gradient notched beam (SGNB) method for determining the fracture toughness of Ti(3)Si(Al)C(2) and Al(2)O(3) with four-point bending specimens. For the specimen with a gradient notch, a sharp natural crack will initiate and extends from the tip of the triangle under increasing load. Based on the straight through crack assumption or on the slice model, the stress intensity factor coefficient for this notched beam was derived. The fracture toughness can be calculated from the maximum load and the minimum of the stress intensity factor coefficient without knowing the crack length. To verify the feasibility and reliability of this suggested method, the SGNB method and two other conventional methods, e.g. the chevron notched beam (CNB) method and single edge notched beam (SENB) method, were performed to determine the fracture toughness of Ti(3)Si(Al)C(2) and Al(2)O(3). The measured fracture toughness values obtained from the SGNB method agreed well with those from conventional fracture toughness tests. (c) 2008 Elsevier Ltd. All rights reserved.
部门归属	[zhou, yanchun] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wan, detian; bao, yiwang; peng, jianzhong] china bldg mat acad, beijing 100024, peoples r china.;zhou, yc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china, peoples r china;yczhou@imr.ac.cn
关键词	Testing Toughness Ti(3)Sialc(2) Mechanical Properties Indentation Techniques Testing Temperature Silicon-nitride Specimens Ceramics Precracking Composites Ti3sic2 Size
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32335
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. T. Wan,Y. W. Bao,J. Z. Peng,et al. Fracture toughness determination of Ti(3)Si(Al)C(2) and Al(2)O(3) using a single gradient notched beam (SGNB) method[J]. Journal of the European Ceramic Society,2009,29(4):763-771.
APA	D. T. Wan,Y. W. Bao,J. Z. Peng,&Y. C. Zhou.(2009).Fracture toughness determination of Ti(3)Si(Al)C(2) and Al(2)O(3) using a single gradient notched beam (SGNB) method.Journal of the European Ceramic Society,29(4),763-771.
MLA	D. T. Wan,et al."Fracture toughness determination of Ti(3)Si(Al)C(2) and Al(2)O(3) using a single gradient notched beam (SGNB) method".Journal of the European Ceramic Society 29.4(2009):763-771.