Determination of stresses from stress intensity factor solutions: An inverse fracture mechanics problem

1993 ◽  
Vol 70 (3) ◽  
pp. R69-R75 ◽  
Author(s):  
T. Fett
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Fracture Mechanics ◽  
Intensity Factor

Experimental Determination of Stress Intensity Factor Distributions in Engineering Problems

1993 ◽  
Vol 46 (11S) ◽  
pp. S29-S40 ◽  
Author(s):  
C. W. Smith
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Fracture Mechanics ◽  
Intensity Factor ◽  
Intensity Factors ◽  
Local Modes ◽  
Engineering Problems ◽  
Practical Engineering ◽  
Stress Optic Law

Following a brief introduction of the concept of stress intensity factor from fracture mechanics and the frozen stress method from photoelasticity, an algorithm is developed from fracture mechanics equations and the stress-optic law for converting stress fringe measurements into a form useful for determining the stress intensity factor. This algorithm covers all three local modes of deformation and is used to analyse frozen stress slices along the border of cracks to obtain distributions for stress intensity factors K1, K2 and K3. The use of the method is illustrated by three examples from practical engineering problems and results are compared with the literature where possible.

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