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Keywords: Crack initiation
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Proceedings Papers

Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A029, July 13–15, 2021
Paper No: PVP2021-62169
... component co-reliability crack growth rate crack initiation crack propagation cracked pipe failure probability fatigue modeling fracture mechanics gas pipeline inspection interval minimum time to failure multi-scale modeling NDE nondestructive evaluation oil pipeline piping POD powerplant...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A013, August 3, 2020
Paper No: PVP2020-21579
...Abstract Abstract A design for flaw placement in a full-scale pipe test was developed to both detect crack initiation and measure crack growth rate upon internal pressurization of a pipe exposed to a sulfide stress cracking (SSC) environment. The objective of this work was to model different...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A059, August 3, 2020
Paper No: PVP2020-21741
...-mechanical simulation, crack initiation, Cr/Ni content, thermal fatigue. 1 Contact author: Yuxiang Zhang, zhang.5292@osu.edu 1. INTRODUCTION Centrifugally cast tubes has been widely used in oil refining and petrochemical application for many years. During service, such tubes are typically exposed to high...
Proceedings Papers

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A058, July 14–19, 2019
Paper No: PVP2019-93502
... growth exponent crack initiation crack propagation NDE nondestructive evaluation failure prevention fatigue modeling finite element method fracture mechanics inspection interval mathematical modeling piping precision structural integrity assessment pressure vessel PYTHON SHM statistical...
Proceedings Papers

Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A067, July 14–19, 2019
Paper No: PVP2019-93098
... and normalized strain by each critical value corresponding to crack initiation were independent of stress-strain relationship of material and stress triaxiality state. Based on this characteristic associated with void growth, damage evolution law representing nonlinear damage accumulation was derived...
Proceedings Papers

Proc. ASME. PVP2013, Volume 5: High-Pressure Technology; ASME NDE Division; Rudy Scavuzzo Student Paper Symposium, V005T11A026, July 14–18, 2013
Paper No: PVP2013-97887
... Changes in the surface roughness of SUS316NG during cyclic loadings were investigated, and the relations between those changes and the crack initiation and propagation processes are discussed on the basis of microscopic observations and cellulose acetate replica observations. Strain-controlled...
Proceedings Papers

Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 1651-1693, July 26–30, 2009
Paper No: PVP2009-77974
... discrepancy, the authors listed ten sources of uncertainties: (1) Welding Residual Stresses. (2) Crack Initiation Predictions. (3) Crack Growth Rates. (4) Circumferential Stress Variation. (5) Operating temperatures different from design temperatures. (6) Temperature factor in actual activation energy vs...
Proceedings Papers

Proc. ASME. PVP2004, Flaw Evaluation, Service Experience, and Materials for Hydrogen Service, 11-19, July 25–29, 2004
Paper No: PVP2004-2541
..., parallel to the buttering/ferritic interface (at a distance of 2mm). The test was conducted under displacement control and the partial unloading method was used to control the defect initiation and propagation. Crack initiation occurred at a relatively low bending moment but a long stable propagation...
Proceedings Papers

Proc. ASME. PVP2006-ICPVT-11, Volume 3: Design and Analysis, 535-544, July 23–27, 2006
Paper No: PVP2006-ICPVT-11-93658
... 21 07 2008 Thermal fatigue sometimes occurs in different types of nuclear reactor components. To estimate the crack initiation damage, uniaxial fatigue curves are often used. They were deduced from strain control tests using normalised cylindrical specimens. However, for in-service...