TY - JOUR

T1 - QUANTITATIVE PREDICTION OF ENVIRONMENTALLY ASSISTED CRACKING BASED ON CRACK TIP STRAIN RATE.

AU - Shoji, Tetsuo

PY - 1985/12/1

Y1 - 1985/12/1

N2 - Based upon strain analysis around a growing crack tip by Finite Element Method, crack tip strain rate is evaluated in relation to crack propagation rate. FEM results show that a strain increment, DELTA delta , with crack extension, DELTA a, tend to have a value of unity when an incremental increase in load line displacement DELTA V//L with crack growth is small, which is a case for environmentally assisted cracking such as SCC, CF and SSRT. Therefore, the strain rate induced by crack advance is given by delta //c//r//a//c//k //t//i//p equals a/a//0 where a is a crack growth rate in an inert environment and a//0 is a numerical constant.

AB - Based upon strain analysis around a growing crack tip by Finite Element Method, crack tip strain rate is evaluated in relation to crack propagation rate. FEM results show that a strain increment, DELTA delta , with crack extension, DELTA a, tend to have a value of unity when an incremental increase in load line displacement DELTA V//L with crack growth is small, which is a case for environmentally assisted cracking such as SCC, CF and SSRT. Therefore, the strain rate induced by crack advance is given by delta //c//r//a//c//k //t//i//p equals a/a//0 where a is a crack growth rate in an inert environment and a//0 is a numerical constant.

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M3 - Conference article

AN - SCOPUS:0022269379

VL - 99

SP - 127

EP - 142

JO - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

JF - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

SN - 0277-027X

ER -