The reliability of the fracture mechanics approach to environmentally assisted cracking: 2. Engineering safe design

被引：8

作者：

Toribio, J ^{[1
]}

Kharin, V ^{[1
]}

机构：

[1] Univ A Coruna, Dept Mat Sci, La Coruna 15192, Spain

来源：

MATERIALS & DESIGN | 1997年 / 18卷 / 02期

关键词：

environmentally assisted cracking; fracture mechanics approach; safe design;

D O I：

10.1016/S0261-3069(97)00093-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In Part 1 of this work, ample experimental evidence was presented of uncertainty in the fracture mechanics characteristics of environmentally assisted cracking. This paper addresses the soundness of the fracture mechanics approach to the phenomenon - the K-dominance over all the process constituents - and reveals the intrinsic variability of the crack growth kinetics curve v=v(K) and the threshold stress intensity factor K-th. Suggestions to consolidate the approach by a strictly local treatment are outlined and a procedure is proposed for engineering safe design against environmentally assisted cracking based on the idea of the worst crack tip situation as the intrinsic one for the material-environment system. (C) 1997 Elsevier Science Ltd. All rights reserved.

引用

页码：95 / 101

页数：7

共 41 条

[1] INVESTIGATION OF STRESS-CORROSION CRACK-GROWTH IN MG ALLOYS USING J-INTEGRAL ESTIMATIONS [J].

ABRAMSON, G ;

EVANS, JT ;

PARKINS, RN .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (01) :101-108

[2]

[Anonymous], 1990, HYDROG EFF MAT BEHAV

[3]

*ASTM, 1981, ANN BOOK ASTM STA 10, P588

[4]

Atkins AG, 1988, ELASTIC PLASTIC FRAC

[5]

BIRNBAUM HK, 1990, HYDROGEN EFFECTS MAT, P639

[6]

Cherepanov GP., 1979, MECH BRITTLE FRACTUR

[7]

Dietzel W., 1996, HYDROGEN EFFECTS MAT, P303

[8]

DMYTRAKH IM, 1994, MATER SCI+, V30, P61, DOI 10.1007/BF00559018

[9]

DOIG P, 1983, METALL TRANS A, V14, P978, DOI 10.1007/BF02644307

[10] The effect of crack blunting in liquid metal environments on K-IEAC determined by the rising load test [J].

Fernandes, PJL ;

Jones, DRH .

ENGINEERING FAILURE ANALYSIS, 1996, 3 (03) :227-230

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