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Mechanics of fracture - Fundamentals and some recent developmentsAn overview is presented of the fundamental aspects of and recent developments in fracture mechanics. Reference is made to linear elastic fracture mechanics including the state of stresses and displacements in the vicinity of cracks, effects of crack geometry and orientation on stress intensity factors, energy balance of Griffith, Irwin's stress intensity concept, and linear elastic fracture mechanics testing for fracture toughness. Other aspects of this paper include the non-linear behavior of materials and their influence on fracture mechanics parameters, consideration of viscoelasticity and plasticity, non-linear fracture toughness parameters as C.O.D., R-curve and J-integral, and a non-linear energy method, proposed by Liebowitz. Finite element methods applied to fracture mechanics problems are indicated. Also, consideration has been given to slow crack growth, dynamic effects on K(IC), Sih's criterion for fracture, Lee and Liebowitz's criterion relating crack growth with plastic energy, and applications of fracture mechanics to aircraft design. Suggestions are offered for future research efforts to be undertaken in fracture mechanics.
Document ID
19810039601
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Liebowitz, H.
(George Washington Univ. Washington, DC, United States)
Subramonian, N.
(George Washington Univ. Washington, DC, United States)
Lee, J. D.
(George Washington University Washington, D.C., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1979
Subject Category
Structural Mechanics
Accession Number
81A24005
Distribution Limits
Public
Copyright
Other

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