Experimental calculation of mixed-mode notch stress intensity factors for anisotropic materials

S. H. Ju, H. Y. Chung, B. J. Jhao

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This study developed a least-squares method to find the notch stress intensity factors (SIFs) of anisotropic materials using image-correlation experiments without the requirement of smooth procedures. Complex displacement functions are deduced into a least-squares form, and then displacements from the image-correlation experiments are substituted into the least-squares equation to evaluate the notch SIFs for anisotropic materials. Experimental results compared with the H-integral and finite element analyses show that the SIFs evaluated from the current method are acceptably accurate if more than five displacement terms are included. Moreover, the least-squares SIFs are not sensitive to the maximum or minimum radius of the area from which data is included, so experimental data very near the notch tip is not necessary.

Original languageEnglish
Pages (from-to)2260-2271
Number of pages12
JournalEngineering Fracture Mechanics
Issue number14
Publication statusPublished - 2009 Sep

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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