TY - JOUR
T1 - A combined numerical/experimental study of ductile crack growth after a large unloading, using T*, J and CTOA criteria
AU - Brust, F. W.
AU - McGowan, J. J.
AU - Atluri, S. N.
PY - 1986
Y1 - 1986
N2 - The J-integral is commonly used to determine the resistance of plastically deformed structures to continued crack growth. This approach is only valid for monotonic loading and small crack growth; yet it is believed conservative for all general loadings. Another parameter, T*, has been formulated, which is theoretically valid under a wide range of conditions. These two plastic fracture criteria, along with CTOA (crack tip opening angle), were examined after a cycle of loading/unloading to zero load followed by reloading. The results of the numerical/ experimental study showed that the T* parameter accurately predicted the behavior (crack growth after 50% reloading), while the other parameters (J and CTOA) were seriously anticonservative.
AB - The J-integral is commonly used to determine the resistance of plastically deformed structures to continued crack growth. This approach is only valid for monotonic loading and small crack growth; yet it is believed conservative for all general loadings. Another parameter, T*, has been formulated, which is theoretically valid under a wide range of conditions. These two plastic fracture criteria, along with CTOA (crack tip opening angle), were examined after a cycle of loading/unloading to zero load followed by reloading. The results of the numerical/ experimental study showed that the T* parameter accurately predicted the behavior (crack growth after 50% reloading), while the other parameters (J and CTOA) were seriously anticonservative.
UR - http://www.scopus.com/inward/record.url?scp=0022488964&partnerID=8YFLogxK
U2 - 10.1016/0013-7944(86)90161-X
DO - 10.1016/0013-7944(86)90161-X
M3 - Article
AN - SCOPUS:0022488964
SN - 0013-7944
VL - 23
SP - 537
EP - 550
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
IS - 3
ER -