Fatigue crack growth (fcg) and threshold behavior of engineering alloys may be studied using an ultrasonic fatigue device, in which the loading frequency is 20 kHz. In this investigation, the stress intensity factors in ultrasonic fatigue testing were determined through dynamic modal analysis and th
On the determination of stress intensity factors in ultrasonic fatigue loading
โ Scribed by Jingang Ni; Xueren Zhang
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 489 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0142-1123
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An improvement of the one-parameter extrapolation method of photoelastic determination of complex (mixed-mode) stress intensity factors at straight or curvilinear crack tips in a plane isotropic elastic medium due to Smith et aL[12, I31 can be achieved by measuring the absolute value of such a facto
AbsUaet--Tbe problem of a centrally cracked rectangular plate is taken as a sample problem to evaluate the dependence of the stress intensity factor on the loading condition. The total loading applied on the upper and lower edges is assumed to be 2bp (2b--the width of the plate). With the condition