An interim structural design standard for solar energy applications. Evaluation of ANL tests

The evaluation of tests on Type 316H stainless steel and Incoloy 800 is reported. The background and task description of the program are reviewed and the details of analyses are described. The results of evaluation of tests are discussed. The creep ratcheting strain of the zero hold-time tests was predicted by using the book and actual hardened material properties as measured from the tests. The mean stress shift for uniaxial strain cycling with hold-times in one direction was studied. An elastic-plastic-creep analysis was conducted for each hold-time test to determine the stress range and the extent of creep ratcheting by using the book and actual hardened material properties. The creep-fatigue life of each test was determined analytically by using the ASME Code. All the results were compared to the experimental data of the tests.