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A Review of Dynamic Fracture Studies in Functionally Graded Materials
Author(s) -
Shukla A.,
Jain N.,
Chona R.
Publication year - 2007
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.2007.00323.x
Subject(s) - photoelasticity , materials science , fracture (geology) , stress field , stress intensity factor , dynamic stress , fracture mechanics , transient (computer programming) , field (mathematics) , structural engineering , stress (linguistics) , representation (politics) , reflection (computer programming) , dynamic loading , mechanics , composite material , solid mechanics , computer science , engineering , finite element method , mathematics , physics , philosophy , law , linguistics , operating system , political science , programming language , politics , pure mathematics
This article presents a review of dynamic fracture studies on functionally graded materials. A brief literature review on the fracture mechanics of graded materials is presented first. This is followed by a discussion on the higher‐order asymptotic analysis of the transient elastic field surrounding the tip of a dynamically growing crack in a functionally graded material. A comprehensive experimental study of dynamic crack growth in model functionally graded material using the optical method of reflection photoelasticity and high‐speed photography is then presented. The results are analysed to establish a generalised relationship between the crack velocity and the dynamic mode‐I stress intensity factor (SIF). This relationship is found to be unique and is distinctly different from that previously established for the matrix material (polyester). Finally, an innovative experimental procedure is used to demonstrate the necessity of employing a fully transient stress‐field representation in the analysis of optical data for an accurate prediction of the dynamic SIF history.