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Keywords: constraint
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Journal Articles
Article Type: Research-Article
J. Pressure Vessel Technol. August 2020, 142(4): 041508.
Paper No: PVT-17-1232
Published Online: May 22, 2020
... constraint factors in various widely used specimen geometries. These results are then compared to pipe specimen with an outer diameter (OD) or inner diameter (ID) surface notch. Since, constraint can have a significant role in SCG initiation, transverse/constraint stress (T-stress), and biaxiality ratios ( β...
Journal Articles
Article Type: Research-Article
J. Pressure Vessel Technol. April 2015, 137(2): 021405.
Paper No: PVT-13-1182
Published Online: April 1, 2015
...) for connecting pipe-nozzle of nuclear pressure vessel have been measured by using single edge-notched bend (SENB) specimens with different crack depths a/W (different constraint). Based on the modified T-stress constraint parameter τ*, the equations of constraint-dependent J-R curves for the crack 2 and crack 3...
Journal Articles
Article Type: Research-Article
J. Pressure Vessel Technol. April 2015, 137(2): 021208.
Paper No: PVT-13-1146
Published Online: April 1, 2015
... by modifying K mat ) to account for the effects of constraint and notch root radius (Sec. 5.3 ). In all three cases above, D r was calculated from D r  =  ε ref / ε y . Weld metal properties were used to define D r because the notch front was located entirely within the weld metal. Large...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. April 2010, 132(2): 021404.
Published Online: March 31, 2010
...Yuh J. Chao; Cheng Wang; Yil Kim; Chi-Hui Chien Two-dimensional finite element analyses are performed to study the crack-tip constraint in an elastic-plastic, three point bend specimen under dynamic load. Both strain rate-independent and strain rate-dependent materials are considered to elucidate...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. June 2009, 131(3): 031406.
Published Online: April 21, 2009
... finite-element predictions. Results are presented for shallow and deep-cracked tension and bend geometries, as these are expected to provide the expected range of constraint conditions in practice. A new approach for evaluating Q is proposed for a RO material, which, for a given geometry, makes Q...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2008, 130(3): 031401.
Published Online: June 3, 2008
... tearing crack growth in ductile materials. In this paper, the phenomenon of crack tunneling during stable tearing crack growth in a single-edge crack specimen is investigated by considering the effect of stress constraint on the fracture toughness. Crack growth in the specimen under nominally Mode I...