Development of simplified model test methods for creep-fatigue evaluation

Y. Wang; M. C. Messner; B. Jetter; T. L. Sham

doi:10.1115/PVP2019-93648

Development of simplified model test methods for creep-fatigue evaluation

Y. Wang, M. C. Messner, B. Jetter, T. L. Sham

Mechanical Properties and Mechanics

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

7 Scopus citations

Abstract

The Simplified Model Test (SMT) approach is an alternative creep-fatigue evaluation method that no longer requires the use of the damage interaction diagram, or D-diagram. The reason is that the combined effects of creep and fatigue are accounted for in the test data by means of a SMT specimen that is designed to replicate or bound the stress and strain redistribution that occurs in actual components when loaded in the creep regime. However, creep-fatigue experiments on SMT key feature articles are specialized and difficult to perform by the general research community. In this paper, two innovative SMT based creep-fatigue experimental methods are developed and implemented. These newly-developed SMT test methods have resolved all the critical challenges in the SMT key feature article testing and enable the potential of further development of the SMT based creep-fatigue evaluation method into a standard testing method. Scoping test results on Alloy 617 and SS 316H using the newly developed SMT methods are summarized and discussed. The concepts of the SMT methodology for creep-fatigue evaluation are explained.

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/PVP2019-93648
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
Simplified Model Test

Access to Document

10.1115/PVP2019-93648

Cite this

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title = "Development of simplified model test methods for creep-fatigue evaluation",

abstract = "The Simplified Model Test (SMT) approach is an alternative creep-fatigue evaluation method that no longer requires the use of the damage interaction diagram, or D-diagram. The reason is that the combined effects of creep and fatigue are accounted for in the test data by means of a SMT specimen that is designed to replicate or bound the stress and strain redistribution that occurs in actual components when loaded in the creep regime. However, creep-fatigue experiments on SMT key feature articles are specialized and difficult to perform by the general research community. In this paper, two innovative SMT based creep-fatigue experimental methods are developed and implemented. These newly-developed SMT test methods have resolved all the critical challenges in the SMT key feature article testing and enable the potential of further development of the SMT based creep-fatigue evaluation method into a standard testing method. Scoping test results on Alloy 617 and SS 316H using the newly developed SMT methods are summarized and discussed. The concepts of the SMT methodology for creep-fatigue evaluation are explained.",

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

author = "Y. Wang and Messner, {M. C.} and B. Jetter and Sham, {T. L.}",

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year = "2019",

doi = "10.1115/PVP2019-93648",

language = "English",

series = "American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP",

publisher = "American Society of Mechanical Engineers (ASME)",

booktitle = "Codes and Standards",

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Wang, Y, Messner, MC, Jetter, B & Sham, TL 2019, Development of simplified model test methods for creep-fatigue evaluation. 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/PVP2019-93648

Development of simplified model test methods for creep-fatigue evaluation. / Wang, Y.; Messner, M. C.; Jetter, B. et al.
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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AB - The Simplified Model Test (SMT) approach is an alternative creep-fatigue evaluation method that no longer requires the use of the damage interaction diagram, or D-diagram. The reason is that the combined effects of creep and fatigue are accounted for in the test data by means of a SMT specimen that is designed to replicate or bound the stress and strain redistribution that occurs in actual components when loaded in the creep regime. However, creep-fatigue experiments on SMT key feature articles are specialized and difficult to perform by the general research community. In this paper, two innovative SMT based creep-fatigue experimental methods are developed and implemented. These newly-developed SMT test methods have resolved all the critical challenges in the SMT key feature article testing and enable the potential of further development of the SMT based creep-fatigue evaluation method into a standard testing method. Scoping test results on Alloy 617 and SS 316H using the newly developed SMT methods are summarized and discussed. The concepts of the SMT methodology for creep-fatigue evaluation are explained.

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Development of simplified model test methods for creep-fatigue evaluation

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