Fracturemechanics has been an indispensable tool in many important technical areas for the design and safe operation of structures containing cracks or crack-like defects that are either introduced in materials processing, component fabrication or induced in service operation. The stress intensity factor (SIF), the characterizing parameter of the linear elastic crack tip stress–strain field, is the foundation of fracture mechanics analysis. The weight function method (WFM) is very powerful for the determination of SIFs and other important fracture parameters for cracked bodies. It is especially attractive for complex loadings and when a large number of SIFs are desired for wide range of crack sizes and multiple load conditions. Compared to various other solutionmethods, theWFMhas several distinct advantages, being versatile, accurate, remarkably efficient, and easy-to-use.
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