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Proceedings Paper

Plant life extension and reliability issues
Author(s): Walter G. Reuter; Allen M. Porter; Nancy M. Carlson
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Paper Abstract

Thermal embrittlement, which can occur during normal operating conditions, may reduce the fracture toughness of materials to the point that structural integrity becomes suspect. Much of the data reported in the literature is based on using impact energy to quantify the extent of embrittlement experienced by base metal specimens. These data provide a useful, qualitative description of the embrittlement but are of limited use in predicting structural integrity when there are cracks in the base metal or in weldments. This paper presents fracture toughness data for both base metal and weldments exposed at 649 degrees Celsius for times up to 5000 h. In addition, preliminary results are provided regarding the use of nondestructive examination (NDE) techniques to predict changes in fracture toughness.

Paper Details

Date Published: 12 May 1995
PDF: 9 pages
Proc. SPIE 2454, Nondestructive Evaluation of Aging Utilities, (12 May 1995); doi: 10.1117/12.209365
Show Author Affiliations
Walter G. Reuter, Idaho National Engineering Lab. (United States)
Allen M. Porter, Idaho National Engineering Lab. (United States)
Nancy M. Carlson, Idaho National Engineering Lab. (United States)


Published in SPIE Proceedings Vol. 2454:
Nondestructive Evaluation of Aging Utilities
Walter G. Reuter, Editor(s)

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