Abstract
Functionally graded materials (FGMs) represent a new concept of tailoring materials with microstructural and properties gradients to achieve optimized performance. FGMs were originally conceived as high temperature resistant materials for aircraft and aerospace applications. The FGM concept has since spread to other areas, for example, tribological coatings, diesel engines, energy conversion systems, optical fibers and filters, wireless communication devices, dental implants and posts, and so on. The interest in FGMs has been growing rapidly in recent years due to their unique characteristics and potential advantages.
Fracture mechanics concerns failure of materials and structures by crack initiation and propagation. Successful applications of FGMs require thorough understanding of fracture behavior of such materials. This article reviews the progress in fracture mechanics of FGMs; introduces fracture mechanics concepts in FGMs including crack tip elastic fields, K—dominance, fracture toughness and R—curve; describes typical methods to obtain fracture parameters and to simulate failure processes, such as integral transform/integral equation method and cohesive zone approach; and discusses some areas that need substantial future efforts. Special topics including thermal, viscoelastic and dynamic fracture are also discussed.
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Jin, ZH. (2003). Fracture Mechanics of Functionally Graded Materials. In: Gao, D.Y., Ogden, R.W. (eds) Advances in Mechanics and Mathematics. Advances in Mechanics and Mathematics, vol 4. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0247-6_1
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