Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 111-115 |
| Number of pages | 5 |
| Journal | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
| Volume | 434 |
| DOIs | |
| Publication status | Published - 2002 |
| Event | ASME 2002 Pressure Vessels and Piping Conference - Vancouver, Canada Duration: 5 Aug 2002 → 9 Aug 2002 |
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Bibliographical note
This paper is not available in Pure.ISBN: 0-7918-1945-0
Keywords
- Residual stresses
- Fracture (Materials)
- Brittle fracture
Cite this
Predicting how crack tip residual stresses influence brittle fracture. / Hadidimoud, S.; Mirzaee-Sisan, A.; Truman, C.E.; Smith, D.J.
In: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, Vol. 434, 2002, p. 111-115.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Predicting how crack tip residual stresses influence brittle fracture
AU - Hadidimoud, S.
AU - Mirzaee-Sisan, A.
AU - Truman, C.E.
AU - Smith, D.J.
N1 - This paper is not available in Pure. ISBN: 0-7918-1945-0
PY - 2002
Y1 - 2002
N2 - A probability distribution model, based on the local approach to fracture, has been developed and used for estimating cleavage fracture following prior loading (or warm pre-stressing) in two ferritic steels. Although there are many experimental studies it is not clear from these studies whether the generation of local residual stress and/or crack tip blunting as a result of prior loading contribute to the enhancement in toughness. We first identify the Weibull parameters required to match the experimental scatter in lower shelf toughness of the candidate steels. Second we use these parameters in finite element simulations of prior loading on the upper shelf followed by unloading and cooling to lower shelf temperatures to determine the probability of failure. The predictions are consistent with experimental scatter in toughness following WPS and provide a means of determining the relative importance of the crack tip residual stresses and crack tip blunting. We demonstrate that for our steels the crack tip residual stress is the pivotal feature in improving the fracture toughness following WPS. The paper finally discusses these results in the context of the non-uniqueness and the sensitivity of the Weibull parameters.
AB - A probability distribution model, based on the local approach to fracture, has been developed and used for estimating cleavage fracture following prior loading (or warm pre-stressing) in two ferritic steels. Although there are many experimental studies it is not clear from these studies whether the generation of local residual stress and/or crack tip blunting as a result of prior loading contribute to the enhancement in toughness. We first identify the Weibull parameters required to match the experimental scatter in lower shelf toughness of the candidate steels. Second we use these parameters in finite element simulations of prior loading on the upper shelf followed by unloading and cooling to lower shelf temperatures to determine the probability of failure. The predictions are consistent with experimental scatter in toughness following WPS and provide a means of determining the relative importance of the crack tip residual stresses and crack tip blunting. We demonstrate that for our steels the crack tip residual stress is the pivotal feature in improving the fracture toughness following WPS. The paper finally discusses these results in the context of the non-uniqueness and the sensitivity of the Weibull parameters.
KW - Residual stresses
KW - Fracture (Materials)
KW - Brittle fracture
U2 - 10.1115/PVP2002-1113
DO - 10.1115/PVP2002-1113
M3 - Article
VL - 434
SP - 111
EP - 115
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 -