Fatigue crack growth analysis models for functionally graded materials


DAĞ S. , Sabuncuoglu B., YILDIRIM B.

9th International Conference on Multiscale and Functionally Graded Materials, Hawaii, Amerika Birleşik Devletleri, 15 - 18 Ekim 2006, cilt.973, ss.423-424 identifier

  • Cilt numarası: 973
  • Basıldığı Şehir: Hawaii
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.423-424

Özet

The objective of this study is to develop crack growth analysis methods for functionally graded materials (FGMs) subjected to mode I cyclic loading. The study presents finite elements based computational procedures for both two and three dimensional problems to examine fatigue crack growth in functionally graded materials. Developed methods allow the computation of crack length and generation of crack front profile for a graded medium subjected to fluctuating stresses. The results presented for an elliptical crack embedded in a functionally graded medium, illustrate the competing effects of ellipse aspect ratio and material property gradation on the fatigue crack growth behavior.