Final report, phases 1 and 2 : an interim structural design standard for solar energy applications
Year: 1979
Type: report
Abstract: extent of creep ratcheting by using the book and actual hardened material properties. The creep-fatigue life of each ANL test was determined analytically by using the ASME Code. All the results were compared to the experimental data of the ANL tests. Accurate determination of the creep law in the primary creep regime is important for the consideration of creep ratcheting. In the cases of a biaxial stress field, the analysis using material properties as determined by tests on uniaxial specimen do not necessarily yield a conservative estimate of creep ratcheting strain. The mean stress shift observed in the analysis was small. This was less than 10% of the stress range for all cases. An estimate of creep-fatigue damage at failure of all tests approximately follows the bilinear interaction curve for Type 316H Stainless Steel and the linear interaction curve for Incoloy 800. The factor of safety over the fatigue damage as determined by ASME Code was between 4 and 20 for Type 316H stainless steel and between 8 and 50 for Incoloy 800.
DOI: 10.2172/12260659
Authors: I. Berman, A. Gangadharan
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2962587953