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Keywords: fracture
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Proceedings Papers

Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A022, July 13–15, 2021
Paper No: PVP2021-61934
... Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-61934 A REVIEW OF CONSERVATISMS IN FRACTURE MECHANICS ASSESSMENTS John Sharples Peter James Jacobs Jacobs Warrington, UK Warrington, UK ABSTRACT integrity assessment engineers...
Proceedings Papers

Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A050, July 13–15, 2021
Paper No: PVP2021-64385
.... If these cracks cannot be detected at an early stage, there is a real potential for the vessel to rupture with obvious dangerous consequences. The behavior of fractured or geometric discontinuity structures can be investigated with linear elastic fracture mechanics (LEFM) parameters. The stress intensity factor...
Proceedings Papers

Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A101, August 3, 2020
Paper No: PVP2020-21028
...Abstract Abstract To protect vessels and components against local fracture, fracture initiation strain limits are used as acceptance criteria. Based on the fracture strain model established from the Unified Strength Theory, this paper proposes fracture strain limits with only three model...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A093, August 3, 2020
Paper No: PVP2020-21650
...Abstract Abstract We present VistaDam , a physics-based ductile fracture material model that is tailored to predict failure in thin metal sheets. VistaDam is based on a three invariant plasticity model in which metal fracture is dependent on the combined evolution of the triaxial stresses...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A056, August 3, 2020
Paper No: PVP2020-21583
... for a fracture assessment that includes cladding. Section XI requires that the cladding be considered in the fracture analysis, including cladding-induced stresses in the K I evaluation; these stresses largely arise due to the different coefficients of thermal expansion of the cladding and base material...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A058, August 3, 2020
Paper No: PVP2020-21715
... with each other, and the grain heights on the front surface were inversely correlated with those on the back surface. fracture polycrystalline pure titanium inhomogeneous deformation microscopic deformation height distribution thin sheet front and back surfaces MICROSCOPIC DEFORMATION OF THIN...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A054, August 3, 2020
Paper No: PVP2020-21003
... of the new model are discussed in the context of improved accuracy and precision for crack assessments. failure fracture structural integrity VALIDATION OF THE NEW GAMMA EXPONENT MODEL FOR AXIAL CRACK ASSESSMENT IN OIL AND GAS PIPELINES Colin Scott IRISNDT Engineering Services Calgary, Alberta...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A012, August 3, 2020
Paper No: PVP2020-21492
...Abstract Abstract It has been observed that steels which are operating in the ductile regime demonstrate greater resistance to tearing under conditions of reduced crack-tip constraint. Constraint is influenced by both geometry and load conditions. For example, fracture toughness specimens...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A052, August 3, 2020
Paper No: PVP2020-21592
...Abstract Abstract This work proposes a new test methodology to characterize the fracture toughness values for either brittle or ductile materials, such as steels of risers and pipelines used in the oil and gas industry by using non-standard four-point bending specimens. Four-point bending (4PB...
Proceedings Papers

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A055, July 14–19, 2019
Paper No: PVP2019-94022
... the appropriate fracture parameters to assist in this flaw assessment procedure. These computational efforts involved examining the fracture response of the system in preparation for planned inspections. Stress intensity factors were evaluated for a total of ten (10) cracks inserted into the refinery pressure...
Proceedings Papers

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A052, July 14–19, 2019
Paper No: PVP2019-93635
... fracture mode and fractured surface morphology were investigated using scanning electron microscopy (SEM). The effect of the abovementioned welding parameters on the microhardness profile along the sheets interface was also investigated to gain insight into the strength of the joint and the width...
Proceedings Papers

Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A063, July 14–19, 2019
Paper No: PVP2019-93575
... vessels. The consistency between fitness-for-service (FFS) procedures and design requirements of pressure vessels is discussed in this work. As a key link between FFS procedures and design standards, the required material fracture toughness not only depends on the methods of FFS procedures such as failure...
Proceedings Papers

Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A070, July 14–19, 2019
Paper No: PVP2019-93546
...PREDICTION OF FRACTURE LOCATION IN TENSILE TEST OF SHORT-FIBER-SELF-REINFORCED POLYETHYLENE COMPOSITE PLATES Naoya TADA1, Ming JIN, Takeshi UEMORI, Junji SAKAMOTO Graduate School of Natural Science and Technology, Okayama University 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan ABSTRACT...
Proceedings Papers

Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 1797-1806, July 26–30, 2009
Paper No: PVP2009-77377
... strain can be imposed across the flawed section in some cases. Recently, the present author has published a general approach to strain-based fracture that uses a strain-based failure assessment diagram (SB-FAD). This includes a range of Options similar to that of the basic R6 approach. The present paper...
Proceedings Papers

Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 527-533, July 22–26, 2007
Paper No: PVP2007-26820
...: no HGE. High grade linepipe Bend pipe Toughness index Microstructure Fracture Proceedings of ASME PVP2007/Creep 8 2007 ASME Pressure Vessels and Piping/Creep 8 Conference A d The IRH tha me we exa ide SU II, SU INT cau dec thro use Proceedings of PVP2007 2007 ASME Pressure Vessels...
Proceedings Papers

Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 671-676, July 22–26, 2007
Paper No: PVP2007-26808
.... and This is different from that of mother pipe. To find the reasons, the fractures and microstructure of these reheated linepipes are analysed and compared with that of mother pipes. High grade linepipe Bend pipe Toughness index Microstructure Fracture Proceedings of PVP2007 2007 ASME Pressure Vessels...
Proceedings Papers

Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 715-720, July 27–31, 2008
Paper No: PVP2008-61227
...) is a feasible method of reducing welding residual stress. Therefore, in order to investigate the effect of heat treatment on mechanical properties, corrosion and fracture behavior of SPV50Q steel weldment, the difference in mechanical properties of the weldment with and without heat treatment at 590°C for 160...
Proceedings Papers

Proc. ASME. PVP2003, Flaw Evaluation, Service Experience, and Reliability, 27-38, July 20–24, 2003
Paper No: PVP2003-2024
... properties are more PWR oriented. The paper presents the different parts of the procedure, their validations and major on-going developments. flaw evaluation fatigue fracture mechanic life evaluation GENERAL PRESENTATION OF FRENCH CODIFIED FLAW EVALUATION PROCEDURE: RSE-M Claude Faidy...
Proceedings Papers

Proc. ASME. PVP2004, Computer Technology and Applications, 47-52, July 25–29, 2004
Paper No: PVP2004-2745
... investigated. A two-dimensional plane strain trimming was analyzed using a rate independent material model. An experimentally measured fracture strain was utilized in FE modeling for fracture initiation and development using element deletion technique. A thermally coupled material model was tentatively tested...
Proceedings Papers

Proc. ASME. PVP2005, Volume 6: Materials and Fabrication, 843-851, July 17–21, 2005
Paper No: PVP2005-71566
... stress creep crack initiation fracture peak stresses in the vicinity of the notch are approximately three times the yield strength at room temperature and the level of stress stress) is uniaxial of stress condition crack init if the uni Furtherm constant the presen Key INTROD Fail temperatu criteria...