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Large Dataset Assessment of the Upper Shelf Master Curve Model

[+] Author Affiliations
Mark Kirk

Nuclear Regulatory Commission, Rockville, MD

Marjorie Erickson

Phoenix Engineering Associates, Inc., Unity, NH

Richard Link

United States Naval Academy, Annapolis, MD

Paper No. PVP2017-66280, pp. V01AT01A010; 8 pages
doi:10.1115/PVP2017-66280
From:
  • ASME 2017 Pressure Vessels and Piping Conference
  • Volume 1A: Codes and Standards
  • Waikoloa, Hawaii, USA, July 16–20, 2017
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5790-8
  • Copyright © 2017 by ASME

abstract

In 2006, EricksonKirk and EricksonKirk proposed a model describing a temperature dependence for upper shelf fracture toughness (JIc), based on the Zerilli-Armstrong (ZA) temperature dependence of the flow stress, that was common to the large number of ferritic steel datasets studied. The equation describing the temperature dependence of JIc was found to be a simple scalar multiple of the temperature dependence predicted by ZA for flow stress. Since that time a large dataset has been developed containing many experimental measurements of JIc for the purpose assessing and refining the previously proposed model. The new data, reported herein, validates the previously proposed model of JIc temperature dependence but suggests that revisions of the previously proposed model of JIc uncertainty are needed to ensure the applicability of the model to both low and high fracture toughness steels.

Copyright © 2017 by ASME

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