Finite Element Analysis of Creep Crack Initiation in Functionally Graded Materials with Crack Parallel to the Gradient


  • Huan Sheng Lai Sun Yat-sen University, Zhuhai 519082, China
  • Chunmei Bai Sun Yat-sen University, Zhuhai 519082, China
  • Kang Lin Liu Fuzhou University, Fujian 350116, China



FGM, creep damage, creep crack initiation, functionally graded material.level.


 With the advances in material synthesis technologies, functionally graded materials (FGMs) are developed to use in high temperature structurals due to the excellent high temperature mechanical properties. To facilitate wide use of FGMs in high temperature structures, finite element method (FEM) was used in this paper to investigate effects of creep resistant properties gradients on creep crack initiation (CCI) in FGMs, with crack parallel to the gradient. Results indicated that when creep resistant properties increased in the crack growth direction, CCI was retarded by creep properties gradients. However, CCI was accelerated by creep properties gradients when creep resistant properties decreased in the crack growth direction. CCI position occurred in the two symmetric slanted planes of the initial crack, regardless of the gradient variation of creep resistant properties.

Author Biographies

Huan Sheng Lai, Sun Yat-sen University, Zhuhai 519082, China

Sino-French Institute of Nuclear Engineering and Technology

Chunmei Bai, Sun Yat-sen University, Zhuhai 519082, China

School of Civil Engineering

Kang Lin Liu, Fuzhou University, Fujian 350116, China

School of Chemical Engineering


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How to Cite

Huan Sheng Lai, Chunmei Bai, Kang Lin Liu. Finite Element Analysis of Creep Crack Initiation in Functionally Graded Materials with Crack Parallel to the Gradient. Int. J. Archit. Eng. Technol. [Internet]. 2019Oct.18 [cited 2021Sep.25];6(1):17-23. Available from: