scholarly journals Proposal of Life Prediction Method Based on Long-Term Creep-Fatigue Test Results of 304 Stainless Steel.

1992 ◽  
Vol 41 (471) ◽  
pp. 1767-1772 ◽  
Author(s):  
Takashi OGATA ◽  
Akito NITTA
Keyword(s):  
Stainless Steel ◽  
Fatigue Test ◽  
Life Prediction ◽  
Prediction Method ◽  
304 Stainless Steel ◽  
Test Results ◽  
Creep Fatigue ◽  
Term Creep

scholarly journals Evaluation of Long Term Creep-Fatigue Life for Type 304 Stainless Steel.

1992 ◽  
Vol 41 (471) ◽  
pp. 1773-1778 ◽  
Author(s):  
Hirotsugu KAWASAKI ◽  
Fumiyoshi UENO ◽  
Kazumi AOTO ◽  
Masakazu ICHIMIYA ◽  
Yusaku WADA
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
304 Stainless Steel ◽  
Creep Fatigue ◽  
Term Creep ◽  
Type 304 ◽  
Type 304 Stainless Steel

scholarly journals Application of Strainrange Partitioning to the Prediction of Creep-Fatigue Lives of AISI Types 304 and 316 Stainless Steel

1977 ◽  
Vol 99 (2) ◽  
pp. 264-271 ◽  
Author(s):  
J. F. Saltsman ◽  
G. R. Halford
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Fatigue Test ◽  
Laboratory Tests ◽  
Heat Treatments ◽  
Test Results ◽  
316 Stainless Steel ◽  
Creep Fatigue ◽  
Testing Techniques

As a demonstration of the predictive capabilities of the method of Strainrange Partitioning, published high-temperature, low cycle, creep-fatigue test results on AISI Types 304 and 316 stainless steel were analyzed and calculated cyclic lives compared with observed lives. Predicted lives agreed with observed lives within factors of two for 76 percent, factors of three for 93 percent, and factors of four for 98 percent of the laboratory tests analyzed. Agreement between observed and predicted lives is judged satisfactory considering that the data are associated with a number of variables (two alloys, several heats and heat treatments, a range of temperatures, different testing techniques, etc.) that are not directly accounted for in the calculations.

A New Nonproportional Low Cycle Fatigue Life Prediction Method for Type 304 Stainless Steel

2019 ◽  
Vol 141 (2) ◽  
Author(s):  
Bowen Liu ◽  
Xiangqiao Yan
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
Life Prediction ◽  
Low Cycle Fatigue ◽  
Prediction Method ◽  
Fatigue Life Prediction ◽  
New Method ◽  
304 Stainless Steel ◽  
Loading Path ◽  
Prediction Approach

A new method is put forward to predict fatigue life for low cycle nonproportional loading based on the Itoh criterion. The proposed method considers the multi-axiality influence on the reference maximum principal strain path and the calculation of nonproportionality factor Fnp by utilizing a multi-axial fatigue life prediction approach based on the modified Wöhler curve method. Different from the hypothesis of previous integral models for computing factor Fnp where the loading path is considered uniform, a new model using an inhomogeneous integral is presented and a path-dependent weight factor is defined to describe this inhomogeneity. The experimental tests of Itoh on 304 stainless steel with 14 different loading cases are referenced to examine the validity of the new method.

Crack Initiation Process for Semi-Circular Notched Plate in Creep-Fatigue Test at Elevated Temperature

2008 ◽  
Author(s):  
Osamu Watanabe ◽  
Bopit Bubphachot ◽  
Nobuchika Kawasaki ◽  
Naoto Kasahara
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Crack Initiation ◽  
Fatigue Test ◽  
Video Camera ◽  
Test Results ◽  
Crack Initiation And Propagation ◽  
Initiation Process ◽  
Initiation And Propagation ◽  
Creep Fatigue

Crack initiation and propagation in creep-fatigue test were observed on semi-circular notched plates at elevated temperature by the CCD video camera. Test specimens are made of SUS304 stainless steel, and temperature is kept to be 550°C, and geometry of the semi-circular plate specimens are changed by diameter size of the hole. Photographs of all cycles were recorded to investigate crack initiation process in structural component having stress concentration and obtain number of cycle of crack initiation (Nc). The test results were compared with predictions by the Stress Redistribution Locus (SRL) method and the Neuber’s rule’s method.

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