Analysis of Bending Fatigue Stress Using Strain Gage Data and Modeling Software for 2 Different Specimen Designs
Faculty Sponsor
Patrick Ferro, Gonzaga Univerity
Research Project Abstract
Specimens of 304 stainless are failed in bending after a range of different gaseous hydrogen exposures. Two different specimen geometries have been tested. In order to determine the stresses on each specimen type, strain gage data and modeling software were used to estimate maximum bending stresses. The results are analyzed and used to construct stress amplitude (S) as a function of log10 Nf curves. The data in S-log Nf form may be used by future designers who predict allowable stresses for components which are subjected to fatigue loading in hydrogen environments.
Session Number
PS1
Location
Robinson 210
Abstract Number
PS1-g
Analysis of Bending Fatigue Stress Using Strain Gage Data and Modeling Software for 2 Different Specimen Designs
Robinson 210
Specimens of 304 stainless are failed in bending after a range of different gaseous hydrogen exposures. Two different specimen geometries have been tested. In order to determine the stresses on each specimen type, strain gage data and modeling software were used to estimate maximum bending stresses. The results are analyzed and used to construct stress amplitude (S) as a function of log10 Nf curves. The data in S-log Nf form may be used by future designers who predict allowable stresses for components which are subjected to fatigue loading in hydrogen environments.
