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Keywords: surface cracks
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Journal Articles
Article Type: Research-Article
J. Pressure Vessel Technol. June 2019, 141(3): 031401.
Paper No: PVT-18-1216
Published Online: March 21, 2019
... for publication in the J OURNAL OF P RESSURE V ESSEL T ECHNOLOGY . Manuscript received October 1, 2018; final manuscript received February 19, 2019; published online March 21, 2019. Assoc. Editor: Yun-Jae Kim. 01 10 2018 19 02 2019 pitting corrosion surface cracks steel pipes first...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. April 2012, 134(2): 021211.
Published Online: January 25, 2012
... analysis is reported for 500 MWe sodium cooled fast reactor (SFR) in this paper. The material of construction is modified 9 Cr-1 Mo and the critical location is the shell nozzle junction. The initial surface crack is postulated at the critical locations at the shell nozzle junction. The critical crack...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. February 2012, 134(1): 011801.
Published Online: December 20, 2011
... simplify the dynamic finite element analysis in fracture mechanics fields. In this paper, model validation was conducted by comparisons with a series of pipe tests with circumferential through-wall and surface cracks under different excitation conditions. These analyses showed that reasonably accurate...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. December 2011, 133(6): 061204.
Published Online: October 19, 2011
... for interacting semicircular and semi-elliptical surface cracks by the finite element method under a tensile or bending load. The change in the stress intensity factors and J-integral values due to the relative spacing of cracks was investigated. Based on the relationship between the magnitude of the interaction...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. April 2011, 133(2): 021205.
Published Online: February 11, 2011
...Masayuki Kamaya The influence of the interaction between two surface cracks on the limit load (LL) was examined by finite element analysis. Circumferential surface cracks were assumed to be on a straight pipe that was subjected to a uniform tensile load. The change in LL due to the relative spacing...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. April 2011, 133(2): 021101.
Published Online: January 31, 2011
...Toshihisa Nishioka; Guangqin Zhou; Takehiro Fujimoto In nuclear pressure vessels, multiple surface cracks are often found by regular inspection. In order to evaluate the integrity of the vessels, ASME B&PV Code Section XI provides the flaw combination rules; however, its accuracy has not been...
Journal Articles
Article Type: Technical Briefs
J. Pressure Vessel Technol. February 2011, 133(1): 014502.
Published Online: January 20, 2011
.... As is seen in Fig. 6b , the area of high normalized potential difference is moved with the increase in the inward crack angle, θ in . The high value area is also rotated with the decrease in the surface crack angle, θ sur , to follow the movement of the crack top, as seen in Fig. 6c...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. February 2011, 133(1): 011701.
Published Online: January 20, 2011
... to understand the effects of residual stress distribution and the geometry of the component on the stress intensity factor of the surface crack. In this study, the stress intensity factors of surface cracks under two assumed residual stress fields were calculated. As residual stress field, a bending type stress...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. October 2010, 132(5): 051203.
Published Online: August 17, 2010
...Q. Ma; C. Levy; M. Perl Due to acute temperature gradients and repetitive high-pressure impulses, extremely dense internal surface cracks can be practically developed in highly pressurized thick-walled vessels, typically in gun barrels. In the authors’ previous studies, networks of typical radial...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2010, 132(4): 041203.
Published Online: August 5, 2010
... up to the limit load. The newly developed analytical approximation of the reference pressure for thick-walled pipes with external axial surface cracks is applicable to a wide range of crack dimensions. 09 07 2009 10 02 2010 05 08 2010 05 08 2010 In order to validate...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2010, 132(4): 041402.
Published Online: July 23, 2010
.... Equivalent CTOD ratio was taken in the failure assessment diagram, and discussed the applicability by comparison with large scale test results of structural component such as edge surface crack panel, center through-wall crack panel, and other geometries. 25 11 2008 02 01 2010 23 07 2010...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. February 2010, 132(1): 011406.
Published Online: January 5, 2010
... will be discussed. In addition, the predicted behavior of surface cracks under normal operating conditions (plus welding residual stress) using AFEA will be investigated and compared with the semi-elliptical assumption. Conclusions on the observation of when semi-elliptical flaw assumptions are appropriate...
Journal Articles
Article Type: Technical Briefs
J. Pressure Vessel Technol. December 2009, 131(6): 064501.
Published Online: October 28, 2009
...A. A. Ali; J. Purbolaksono; A. Khinani; A. Z. Rashid; F. Tarlochan In this paper stress intensity factors of a longitudinal semielliptical surface crack on the inner surface in a compound tube subjected to internal pressure are presented. Variations of modulus of elasticity and thickness...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. December 2009, 131(6): 061301.
Published Online: September 23, 2009
... computational fluid dynamics corrosion electrochemistry failure (mechanical) film flow flow simulation microfluidics multiphase flow pipe flow pipes surface cracks turbulence wear corrosion dynamic simulation multiphase flow protective films modeling fluid-structure interaction...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. December 2009, 131(6): 061401.
Published Online: September 23, 2009
... surface cracked and tended to the initiation of a notch in the metal from the inner surface of the tube and consequently the final fracture took place. The fracture mode at the starting point (sensitized zone) is intergranular (Fig. 3d ) because of the precipitation of massive carbides at grain...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. June 2009, 131(3): 031407.
Published Online: April 22, 2009
... stress analysis surface cracks fitness for service (FFS) rule plastic collapse volumetric flaws alignment rule p-M (pressure-moment) diagram There are numerous cases in which the surface of vessels such as towers, piping, and storage tanks is partially corroded during...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2008, 130(3): 031208.
Published Online: July 11, 2008
...C. Levy; M. Perl; S. Kotagiri The influence of the Bauschinger effect (BE) on the three dimensional, Mode I, combined stress intensity factor (SIF) distributions for arrays of longitudinal coplanar, surface cracks emanating from the bore of a fully or partially autofrettaged thick-walled cylinder...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2008, 130(3): 031403.
Published Online: June 6, 2008
... to that corresponding to a double-ended rupture of the reactor coolant line were employed in the thermal and structural analyses of the RPV. Subsequently, fracture mechanics calculations were performed for surface cracks of various depths assumed in the nozzle corner and flange joint where the highest principal...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2008, 130(3): 031401.
Published Online: June 3, 2008
... 0022-5096 , 49 , pp. 2921 – 2953 . digital simulation ductile fracture ductility finite element analysis fracture mechanics fracture toughness mechanical engineering computing surface cracks crack tunneling constraint fracture criterion crack growth simulation...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. February 2008, 130(1): 011406.
Published Online: January 30, 2008
...Masayuki Kamaya The interaction between multiple surface cracks is an important consideration in the cracking behavior due to thermal fatigue and stress corrosion cracking. However, it is difficult to evaluate the intensity of the interaction quantitatively because there are many factors...