Effect of internal pressurization on the creep-fatigue performance of alloy 617 based on simplified model test method

Y. Wang; B. Jetter; T. L. Sham

doi:10.1115/PVP2019-93650

Effect of internal pressurization on the creep-fatigue performance of alloy 617 based on simplified model test method

Y. Wang, B. Jetter, T. L. Sham

Mechanical Properties and Mechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

The Simplified Model Test (SMT) is an alternative approach to determine cyclic life at elevated temperature and avoids parsing the damage into creep and fatigue components. The original SMT concept [1] considered that the effects of sustained primary stress loading could be safely neglected because the allowable local stress and strain levels were much higher than the allowable sustained primary stress levels. This key assumption is critically evaluated on Alloy 617 using internal pressurized cylindrical SMT specimens at 950 ^oC. The impact of combined internal pressurization and displacement-controlled creep-fatigue loading on the SMT cycle life is demonstrated at different strain ranges. The effect of primary load on the SMT design method is discussed.

Original language	English
Title of host publication	Codes and Standards
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791858929
DOIs	https://doi.org/10.1115/PVP2019-93650
State	Published - 2019
Event	ASME 2019 Pressure Vessels and Piping Conference, PVP 2019 - San Antonio, United States Duration: Jul 14 2019 → Jul 19 2019

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	1
ISSN (Print)	0277-027X

Conference

Conference	ASME 2019 Pressure Vessels and Piping Conference, PVP 2019
Country/Territory	United States
City	San Antonio
Period	07/14/19 → 07/19/19

Funding

The research was sponsored by the U.S. Department of Energy, Office of Nuclear Energy, under Contract No. DEAC02-06CH11357 with Argonne National Laboratory, managed and operated by UChicago Argonne LLC, and under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory (ORNL), managed and operated by UT-Battelle, LLC. Programmatic direction was provided by the Office of Nuclear Energy. The technical support from Charles S. Hawkins of ORNL is greatly appreciated. This manuscript has been co-authored by UChicago Argonne LLC under Contract No. DE-AC02-06CH11357, and by UT-Battelle LLC, under Contract No. DE-AC0500OR22725, with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The research was sponsored by the U.S. Department of Energy, Office of Nuclear Energy, under Contract No. DE-AC02-06CH11357 with Argonne National Laboratory, managed and operated by UChicago Argonne LLC, and under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory (ORNL), managed and operated by UT-Battelle, LLC. Programmatic direction was provided by the Office of Nuclear Energy.

Funders	Funder number
UChicago Argonne LLC	DE-AC02-06CH11357
UT-Battelle LLC
U.S. Department of Energy
Office of Nuclear Energy	DEAC02-06CH11357
Argonne National Laboratory	DE-AC05-00OR22725
Oak Ridge National Laboratory

Keywords

Creep-Fatigue
Elastic Follow-up
Internal Pressurization
Simplified Model Test

Access to Document

10.1115/PVP2019-93650

Cite this

Wang, Y., Jetter, B., & Sham, T. L. (2019). Effect of internal pressurization on the creep-fatigue performance of alloy 617 based on simplified model test method. In Codes and Standards (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2019-93650

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abstract = "The Simplified Model Test (SMT) is an alternative approach to determine cyclic life at elevated temperature and avoids parsing the damage into creep and fatigue components. The original SMT concept [1] considered that the effects of sustained primary stress loading could be safely neglected because the allowable local stress and strain levels were much higher than the allowable sustained primary stress levels. This key assumption is critically evaluated on Alloy 617 using internal pressurized cylindrical SMT specimens at 950 oC. The impact of combined internal pressurization and displacement-controlled creep-fatigue loading on the SMT cycle life is demonstrated at different strain ranges. The effect of primary load on the SMT design method is discussed.",

keywords = "Creep-Fatigue, Elastic Follow-up, Internal Pressurization, Simplified Model Test",

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Wang, Y, Jetter, B & Sham, TL 2019, Effect of internal pressurization on the creep-fatigue performance of alloy 617 based on simplified model test method. in Codes and Standards. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, vol. 1, American Society of Mechanical Engineers (ASME), ASME 2019 Pressure Vessels and Piping Conference, PVP 2019, San Antonio, United States, 07/14/19. https://doi.org/10.1115/PVP2019-93650

Effect of internal pressurization on the creep-fatigue performance of alloy 617 based on simplified model test method. / Wang, Y.; Jetter, B.; Sham, T. L.
Codes and Standards. American Society of Mechanical Engineers (ASME), 2019. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Sham, T. L.

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AB - The Simplified Model Test (SMT) is an alternative approach to determine cyclic life at elevated temperature and avoids parsing the damage into creep and fatigue components. The original SMT concept [1] considered that the effects of sustained primary stress loading could be safely neglected because the allowable local stress and strain levels were much higher than the allowable sustained primary stress levels. This key assumption is critically evaluated on Alloy 617 using internal pressurized cylindrical SMT specimens at 950 oC. The impact of combined internal pressurization and displacement-controlled creep-fatigue loading on the SMT cycle life is demonstrated at different strain ranges. The effect of primary load on the SMT design method is discussed.

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Effect of internal pressurization on the creep-fatigue performance of alloy 617 based on simplified model test method

Abstract

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Keywords

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