Record Details

Bilinear CTOD/CTOA scheme for characterisation of large range mode I and mixed mode stable crack growth through AISI 4340 steel

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Bilinear CTOD/CTOA scheme for characterisation of large range mode I and mixed mode stable crack growth through AISI 4340 steel
 
Creator MAITI, SK
KISHORE, GK
MOURAD, AHI
 
Subject 2024-t351 aluminum-alloy
finite-element-analysis
tip-opening angle
aisi-4340 steel
specimen
sheet
criterion
curves
ctoa
 
Description An investigation has been reported concerning characterisation of large span stable crack growth (SCG) through AISI 4340 steel in terms of CTOD/CTOA under both mode I and mixed (I and II) mode loadings. The characterisation has been possible through finite element analysis of published experimental results with compact tension type of specimens. As against the earlier observations by many investigators of a bilinear CTOD/CTOA variation, decreasing initially and constant later, characterising the crack growth through other materials, an increasing initially and constant later type of variation is found to be suitable for AISI 4340 steel. The same variation is found to characterise both mode I and mixed mode SCG. The starting value of CTOD/CTOA is 0.035 mm/0.0875 rad; the value at the later stages is 0.08 mm/0.20 rad. The same variation is found to predict accurate enough for engineering applications the initiation (P(i)) and maximum (P(max)) loads and the variation of load-cl is placement diagrams over a span of crack growth up to 10 mm. (C) 2008
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-27T16:49:05Z
2011-12-26T12:57:43Z
2011-12-27T05:44:59Z
2011-07-27T16:49:05Z
2011-12-26T12:57:43Z
2011-12-27T05:44:59Z
2008
 
Type Article
 
Identifier NUCLEAR ENGINEERING AND DESIGN, 238(12), 3175-3185
0029-5493
http://dx.doi.org/10.1016/j.nucengdes.2008.06.008
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7277
http://hdl.handle.net/10054/7277
 
Language en