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Keywords: fracture mechanics
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Proceedings Papers

Proc. ASME. PVP2023, Volume 2: Computer Technology & Bolted Joints; Design & Analysis, V002T03A016, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-107766
... also be considered when inspection strategies and integrity management plans are developed for PSA vessels. The work described in this paper highlights how it is possible to operate PSAs beyond design life by developing inspection plan based on a fracture mechanics approach and basing the underlying...
Proceedings Papers

Proc. ASME. PVP2023, Volume 2: Computer Technology & Bolted Joints; Design & Analysis, V002T03A042, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-105920
... to structural failure. The Second Order Reliability Method (SORM) is the probabilistic method used. The probabilistic results are then compared with the safety factors currently used for deterministic LBB assessments. leak before break FAD probabilistic assessment fracture mechanics two-phase critical...
Proceedings Papers

Proc. ASME. PVP2023, Volume 1: Codes & Standards, V001T01A010, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106269
..., Aurore Parrot2 1Framatome, 1 Place Jean Millier, 92084 Paris la Défense, France 2EDF Les renardières, Département MMC, 77250 Ecuelles, France ABSTRACT In the frame of a Fracture Mechanics Assessement in the perforated part of the steam-generator tubesheet, a defect relying two holes is postulated, which...
Proceedings Papers

Proc. ASME. PVP2023, Volume 1: Codes & Standards, V001T01A040, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-105727
... materials. In the light of recent developments in understanding hydrogen degradation mechanisms, it is recognized that alternative design and fabrication technologies can be employed to mitigate the risk of hydrogen embrittlement without such penalties. Using fracture mechanics approaches, it has been...
Proceedings Papers

Proc. ASME. PVP2023, Volume 1: Codes & Standards, V001T01A009, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106100
... is to propose a methodology applicable in Engineering Fracture Mechanics Assessment to gain margins without considering any probability of failure or statistical approach. fracture mechanics constraint effect defect assessment brittle-to-ductile transition low alloy steel Proceedings of the ASME...
Proceedings Papers

Proc. ASME. PVP2023, Volume 2: Computer Technology & Bolted Joints; Design & Analysis, V002T03A055, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106099
... for fracture assessment analysis in the upper part of the brittle-to-ductile transition for high toughness nuclear vessel low alloy steels. residual stresses fracture mechanics defect assessment brittle-to-ductile transition low alloy steel induction Proceedings of the ASME 2023 Pressure Vessels...
Proceedings Papers

Proc. ASME. PVP2023, Volume 2: Computer Technology & Bolted Joints; Design & Analysis, V002T03A054, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106098
... to the mid-thickness of the plate. The experimental developments confirm the relevance of the thermal cycle defined through the numerical investigation, showing a good reproducibility, and expected residual stresses levels. residual stresses fracture mechanics defect assessment brittle-to-ductile...
Proceedings Papers

Proc. ASME. PVP2023, Volume 4: High Pressure Technology, V004T05A002, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106995
... pressure decreases. A model based on fracture mechanics was deployed to predict the blister damage evolution in the plastic liner. The blister damage propagation was evaluated by the stress intensity factor, which is related to the high-pressure hydrogen acting on the cavity. The blister damage evolution...
Proceedings Papers

Proc. ASME. PVP2023, Volume 4: High Pressure Technology, V004T05A001, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106712
... (517–1034 bar). ASME Section VIII, Division 3, Article KD-10 has rules for these hydrogen vessels regarding the assessment of life using fracture mechanics. This assessment leverages empirical testing for crack growth rate and determination of the threshold intensity factor for hydrogen assisted...
Proceedings Papers

Proc. ASME. PVP2023, Volume 5: Materials & Fabrication, V005T06A035, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106451
... for the earliest observed flaw dimensions per the Section XI flaw evaluation procedure as a validation exercise. primary water stress corrosion cracking (PWSCC) alloy 600 CRDM nozzle CEDM nozzle fracture mechanics Section XI IWB-3660 flaw evaluation validation Proceedings of the ASME 2023 Pressure...
Proceedings Papers

Proc. ASME. PVP2023, Volume 5: Materials & Fabrication, V005T06A083, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-102314
.... pipeline integrity stacked cracks crack interaction criteria elastic-plastic FEA fracture mechanics crack mesh Proceedings of the ASME 2023 Pressure Vessels & Piping Conference PVP2023 July 16-21, 2023, Atlanta, Georgia PVP2023-102314 PIPELINE STACKED CRACK INTERACTION BURST PRESSURE ANALYSIS USING...
Proceedings Papers

Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A039, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84853
... at the deepest point of the crack front. This paper shows promising results and concludes there is a significant margin in the fracture mechanics assessment based on material properties obtained by testing highly constrained standard specimens compared to more realistic structural situations. ATLAS...
Proceedings Papers

Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A043, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-83867
... with dK/dt, yet the methodology can still show strong shortcomings regarding the underlying distribution. It is argued that the cause for the observations are linked to adiabatic heating and local crack arrest that severely influence macroscopic fracture behavior. It is recommended that fracture mechanics...
Proceedings Papers

Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A016, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84851
...: Ageing components; ageing structures; AISI 4340 steel; brittle fracture; ceramics; chemical processing plant; coreliability; co-reliability-target; component co-reliability; crack growth rate; crack initiation; crack propagation; cracked pipe; failure probability; fatigue; fracture mechanics; gas...
Proceedings Papers

Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A045, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84226
... for the evaluation of the Leakage Rate (LR). With this coupling the Minimum Detectable Crack Length (MDCL) distribution density is calculated. This step sets the boundary conditions for the fracture mechanics assessment of the postulated defect. The main probabilistic outputs from the assessment are the probability...
Proceedings Papers

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A064, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61027
... on the stress state of the specimen. It is demonstrated that the modifications to the mini-CT specimen geometry will not lead to significant deviations in the stress patterns and J-integral values compared to the standard geometry. fracture mechanics long-term operation miniature testing RPV mini-CT...
Proceedings Papers

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A027, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-60495
... assessment applicable in the ageing and lifetime triaxiality, Fracture mechanics, cracks in piping management of primary circuit components. NOMENCLATURE To support development and validation of those methods a large scale test programme was developed c Total crack angle / total crack length with the aim...
Proceedings Papers

Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A021, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-60413
... shapes, flaw orientations and different load cases. The final scope is to quantify how the flaw projection into planes normal to the maximum principal stresses is conservative and how this conservatism could be improved, if need be. flaw characterization mixed modes fracture mechanics extended...
Proceedings Papers

Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A029, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
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. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A034, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61530
..., it is necessary to use fracture mechanics methods to analyze the fatigue life of gas cylinders in a high-pressure gaseous hydrogen environment. In this work, a method for calculating the fatigue life of fracture mechanics for hydrogen storage cylinders was established according to ASME VIII-3 KD-10...