Semiempirical mathematical model of fatigue damage in stressed objects uses experimental histories of strains in those objects to predict fatigue lives. Accounts for initiation and propagation of fatigue cracks on cycle-by-cycle basis. Measured strain history first digitized, then converted to history of turning-point strains for purposes of analysis. Data between turning points not used. When model calibrated against proper test data for each type of object characterized, its predictions of fatigue lives superior to statistical models as one based on root-mean-square strain.
Predictions Of Fatigue Damage From Strain Histories
NASA Tech Briefs ; 13 , 7
1989-07-01
Sonstige
Keine Angabe
Englisch
Predictions of Cumulative Fatigue Damage Using Condensed Load Histories
SAE Technical Papers | 1975
|Fatigue damage during complex stress histories
TIBKAT | 1959
|Predictions of cumulative fatique damage using condesed load histories.
Kraftfahrwesen | 1975
|Measurement of stress histories and fatigue predictions on offshore platforms
Tema Archiv | 1986
|Fatigue Life Predictions for a Notched Member Under Complex Load Histories
SAE Technical Papers | 1975
|