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Keywords: creep
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Proceedings Papers

Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A076, July 17–22, 2022
Paper No: PVP2022-84897
... to be used congruently to provide a solution on a timescale consistent with the UKs ambition for AMR deployment. elevated temperature analysis and design structural integrity safety and reliability reactor/nuclear creep probability/probabilistic Proceedings of the ASME 2022 Pressure Vessels...
Proceedings Papers

Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A051, July 17–22, 2022
Paper No: PVP2022-81135
... margin (LNDM) method is recommended, as it is the most robust, even when used with complex creep laws. The surrogate Monte-Carlo analysis (using a Gaussian process regressor as a surrogate) was found to generate results that were just as accurate and precise as classical Monte-Carlo analysis...
Proceedings Papers

Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T02A011, July 17–22, 2022
Paper No: PVP2022-78366
... nominal diameter affect the change over time of the bolt load under a high temperature environment. This paper proposed formulas to calculate the changes over time in bolt stress and gasket stress easily due to bolt creep by applying the mechanical relationship of bolted flange joint. The changes over...
Proceedings Papers

Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A035, July 17–22, 2022
Paper No: PVP2022-84895
... design type 316L austenitic stainless steel creep creep-fatigue Proceedings of the ASME 2022 Pressure Vessels & Piping Conference PVP2022 July 17-22, 2022, Las Vegas, Nevada, USA PVP2022-84895 HIGH-TEMPERATURE DESIGN OF 700°C HEAT EXCHANGER IN A LARGE SCALE HIGHTEMPERATURE THERMAL ENERGY STORAGE...
Proceedings Papers

Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A027, July 17–22, 2022
Paper No: PVP2022-81247
... specimen to evaluate the mechanical performance under axial tensile loadings to study the failure mechanism. The lab-scaled PCHE specimens were tested under overpressure loads at room temperature, and pressure creep and pressure creep-fatigue loadings to mimic the realistic loading conditions observed...
Proceedings Papers

Proc. ASME. PVP2022, Volume 3: Fluid-Structure Interaction; High Pressure Technology, V003T05A016, July 17–22, 2022
Paper No: PVP2022-84215
... on the Compact Flange example the design process and challenges related with high temperature conditions will be discussed. The definition of the critical temperature will be defined based on material creep properties. Design techniques used to predict long term connection behavior including bolt relaxation...
Proceedings Papers

Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A042, July 17–22, 2022
Paper No: PVP2022-83888
... Abstract In this research, creep tests were carried out on ex-service 2.25Cr-1Mo steel under conditions more severe than those of service. The specimens were tested in a temperature range of 585°C up to 650°C and in a stress range of 65 MPa up to 120 MPa, leading to strain rates values...
Topics: Creep, Steel
Proceedings Papers

Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A027, July 17–22, 2022
Paper No: PVP2022-84126
... Abstract Creep strength-enhanced ferritic (CSEF) steels are widely used in fossil power plants operated in many countries and life management for the components made of these materials are of critical importance for plant operators. In particular, failures in welded joints in softened heat...
Proceedings Papers

Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A029, July 17–22, 2022
Paper No: PVP2022-84415
... Abstract Methods for minimum-creep-strain-rate prediction have evolved. Many models have been proposed, and different calibration techniques are used. Often the limitation of these models for accurate prediction arises due to a lack of long-range data incorporating both the low-stress and high...
Proceedings Papers

Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A043, July 17–22, 2022
Paper No: PVP2022-84906
... data in hydrogen at a range of temperatures (316 to 399°C [600 to 750°F]), 5.52 MPa (800 psig H 2 ) hydrogen pressure, and stress intensity values between (10.5 to 35.4 MPa√m [9 to 32 ksi√in]). These results were used to validate and refine a crack growth model based on the creep crack growth fracture...
Proceedings Papers

Proc. ASME. PVP2022, Volume 4B: Materials and Fabrication, V04BT06A014, July 17–22, 2022
Paper No: PVP2022-84863
... and inspections conducted. The heater was partially rebuilt with the convection section tube material being recovered and the radiant section being rebuilt in a different metallurgy. ageing creep damage elevated temperature fabrication failure materials welding Proceedings of the ASME 2022 Pressure...
Proceedings Papers

Proc. ASME. PVP2021, Volume 5: Operations, Applications, and Components; Seismic Engineering; Non-Destructive Examination, V005T07A004, July 13–15, 2021
Paper No: PVP2021-61416
... will include: creep, fatigue, corrosion (erosion-corrosion - E/C and flow accelerated corrosion - FAC) as well as mechanisms that are commonly responsible for high energy piping leaks, failures and repairs including thermal quench cracking of HRSG interstage, terminal desuperheaters and turbine bypass...
Proceedings Papers

Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A065, July 13–15, 2021
Paper No: PVP2021-63905
... continue to work on design-by-analysis methods in the elevated temperature range, where creep rupture is a failure mode with steady loading. The Subgroup on Elevated Temperature Design, which reports to Section I and Section VIII and collaborates with Section III, has been evaluating eight different...
Proceedings Papers

Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A060, July 13–15, 2021
Paper No: PVP2021-61605
... to map the elastic follow up and through time. The results are benchmarked against uniaxial results having combined primary and secondary loading. elastic follow-up elevated temperature design creep plasticity Norton-Bailey Proceedings of the ASME 2021 Pressure Vessels & Piping Conference...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A079, August 3, 2020
Paper No: PVP2020-21623
...Abstract Abstract Creep deformation behavior, creep strength property and microstructural evolution during creep exposure were investigated on Super 304H steel for boiler tube. In the high stress and lower temperature regime, creep rupture strength of Super 304H steel is higher than...
Topics: Creep
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A009, August 3, 2020
Paper No: PVP2020-21529
... while the other element is given linear anisotropic properties to account for the anisotropy induced by the fiber reinforcement. The model was calibrated using data from uniaxial tensile creep tests on coupons made from pure matrix resin and uniaxial tension tests on TP-FRPC tape parallel to the fiber...
Proceedings Papers

Proc. ASME. PVP2020, Volume 2: Computer Technology and Bolted Joints, V002T02A002, August 3, 2020
Paper No: PVP2020-21305
... the gasket stress back into range to provide sufficient tightness. Knowing this, the end user can make better choices for both gasket material selection and assembly procedures in order to reduce overall job costs. gasket creep relaxation stress loss assembly retorque leakage tightness...
Proceedings Papers

Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A073, August 3, 2020
Paper No: PVP2020-21587
... or notch weakening and investigates the impact of multiaxial stress on Alloy 617 creep behavior. Multiaxial stress does not degrade Alloy 617’s short-term creep-rupture properties. This was concluded from the following observations: 1) multiaxial creep resided on or to the right of the Larson-Miller curve...
Proceedings Papers

Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A102, August 3, 2020
Paper No: PVP2020-21077
...Abstract Abstract Previous study evaluated residual stress in a circumferential “V”-groove butt joint of a heat-recovery steam generator (HRSG) pipeline; the material was ASTM A-335-Grade P22. Aim had been to check on the influence over creep-relaxation previously found out for a tee made...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A029, August 3, 2020
Paper No: PVP2020-21499
... properties and allowable stresses of diffusion bonded materials and weldments. In this paper, one candidate material, Alloy 800H, was selected for diffusion bonding trials. Preliminary results obtained from a series of tensile and creep tests suggest that the diffusion bonded material is weaker than the base...