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Keywords: creep
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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 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...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A030, August 3, 2020
Paper No: PVP2020-21500
... bonding of plates to form CHX block with a channeled core. The elevated temperature and transient conditions of NGNP operation may induce excessive strain and creep-fatigue failure in channel ligaments. The primary objective of this study is to evaluate the design of CHX for application to NGNPs...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A031, August 3, 2020
Paper No: PVP2020-21502
... bonded material needs mechanical and microstructural property evaluation. In this study, Alloy 800H is selected to study the influence of the diffusion bonding process on mechanical and microstructure properties of base metal. A series of tensile, fatigue, creep, and creep-fatigue experiments...
Proceedings Papers

Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A068, August 3, 2020
Paper No: PVP2020-21335
...Abstract Abstract In vessel component design by analysis, two failure modes are routinely investigated: Protection against plastic collapse and Protection against local failure. In elevated temperature service, creep rupture stress is the basis for elastic numerical analysis for establishing...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A040, August 3, 2020
Paper No: PVP2020-21613
...Abstract Abstract Pressure vessel components subject to high temperature and pressure are susceptible to life-limiting creep and/or creep-induced failure. Traditional continuum damage mechanics (CDM) based creep-damage model are used extensively for the prediction and design against creep...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A042, August 3, 2020
Paper No: PVP2020-21677
...Abstract Abstract The objective of this study is to introduce a method for creating “material specific” creep continuum damage mechanics-based constitutive models. Herein, material specific is defined as a constitutive model based on the mechanism-informed minimum creep strain rate (MCSR...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A043, August 3, 2020
Paper No: PVP2020-21791
...Abstract Abstract Cavity formation during creep of steels at high temperatures and stresses is closely related to the original and evolved microstructure, particularly the orientation between grains and precipitation at the grain boundaries. Understanding the initiation, growth and coalescence...
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. PVP2019, Volume 7: Operations, Applications, and Components, V007T07A002, July 14–19, 2019
Paper No: PVP2019-93034
...FLANGE NECK CREEP DAMAGE BELOW API 579-1/ASME FFS-1 CREEP DAMAGE THRESHOLD TRIGGERED BY RING JOINT DISSIMILAR FLANGES Yoichi Ishizaki, P.E.1, Futoshi Yonekawa, Teppei Suzuki, Ph.D. Idemitsu Kosan Co.Ltd Chiba, Japan Akira Hase Idemitsu Engineering Co.Ltd. Chiba, Japan ABSTRACT Reduced flange design...
Proceedings Papers

Proc. ASME. PVP2019, Volume 8: Seismic Engineering, V008T08A023, July 14–19, 2019
Paper No: PVP2019-93384
... curves from each ratcheting test. Keywords: ratcheting, fatigue, creep, PVP materials. INTRODUCTION The components of engineering structures usually undergo cyclic loading. The cyclic stress strain responses under certain non-zero mean stress tensor component leads to the accumulation of plastic strain...
Proceedings Papers

Proc. ASME. PVP2019, Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD), V005T09A007, July 14–19, 2019
Paper No: PVP2019-93416
...FINITE ELEMENT ANALYSIS OF PRINTED CIRCUIT HEAT EXCHANGER CORE FOR CREEP AND CREEP-FATIGUE RESPONSES Heramb P. Mahajan North Carolina State University Raleigh, NC, USA 27606 Email: hpmahaja@ncsu.edu Tasnim Hassan North Carolina State University Raleigh, NC, USA 27606 Email: thassan@ncsu.edu...
Proceedings Papers

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A034, July 14–19, 2019
Paper No: PVP2019-93228
... at enhancing the efficiency of its power plants by increasing the operating temperature. Under cyclic loading conditions, this leads to creep-cyclic plasticity driven damage mechanisms such as cyclically enhanced creep, creep enhanced plasticity and creep ratcheting. A detailed understanding of creep...
Proceedings Papers

Proc. ASME. PVP2019, Volume 6A: Materials and Fabrication, V06AT06A059, July 14–19, 2019
Paper No: PVP2019-93734
...CREEP LIFE EVALUATIONS OF ASME B31.1 ALLOWANCE FOR VARIATION FROM NORMAL OPERATIONS: 11 MATERIALS Marvin J. Cohn1, Ron Haupt Intertek AIM Pressure Piping Engineering Associates, Inc. Santa Clara, CA U.S.A. Foster City, CA U.S.A. ABSTRACT The ASME B31.1-2018 Power Piping Code (Code) paras. 102.2.4...