The SINTAP fracture toughness estimation procedure

被引：24

作者：

Pisarski, HG

Wallin, K

机构：

[1] TWI, Struct Integr Technol Grp, Cambridge CB1 6AL, England

[2] Tech Res Ctr Finland, VTT Mfg Technol, Espoo 02044, Finland

来源：

ENGINEERING FRACTURE MECHANICS | 2000年 / 67卷 / 06期

关键词：

weld metals; fracture mechanics; weak link; heat affected zone; structural assessment;

D O I：

10.1016/S0013-7944(00)00076-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The maximum likelihood (MML) procedure for the analysis of fracture toughness data generated at a single temperature that was developed for the SINTAP flaw assessment procedure is described. The procedure involves a series of steps to ensure that a Weibull toughness distribution fitted to experimental data is conservative. Validation is provided by experimental data from weld metal, heat affected zone and parent plate. Results are compared with those from assessments carried out to existing methods described in BSI PD6493:1991 and BS 7910:1999. It is concluded that for small data sets, the MML procedure provides a greater level of consistency and reduces selection of potentially nonconservative fracture toughness values. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：613 / 624

页数：12