Results 261 to 270 of about 370,108 (311)
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Criteria of nonlinear fracture mechanics
Strength of Materials, 1988Difficulties are experienced in using some of the examined fracture criteria in the elastoplastic region. The apparent fracture toughness varies in a wide range. The effect of the thickness of the specimen on cracking resistance is relatively small.
G. Pauchet, G. Pluvinage
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2012
Criteria for the growth of a pre-existing crack as generally based on reaching critical values of the stress intensity factors or energy release rate. Starting with the simplest case, that of tensile fracture in an elastic material, criteria for fracture under a range of conditions are explored.
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Criteria for the growth of a pre-existing crack as generally based on reaching critical values of the stress intensity factors or energy release rate. Starting with the simplest case, that of tensile fracture in an elastic material, criteria for fracture under a range of conditions are explored.
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1980
The mechanical conditions for the initiation and the propagation of fracture are considered in the case of trousers type of a specimen consisting of two flexible canvas bonded with rubbery adhesive. To reduce the difficulties in mathematical analysis a mechanical model for peeling is adopted.
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The mechanical conditions for the initiation and the propagation of fracture are considered in the case of trousers type of a specimen consisting of two flexible canvas bonded with rubbery adhesive. To reduce the difficulties in mathematical analysis a mechanical model for peeling is adopted.
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Dynamic fracture criteria for a polycarbonate
Journal of Applied Physics, 1973Flat-plate impact experiments were performed on polycarbonate specimens to produce various levels of fracture damage. Nucleation and growth functions for incipient shock damage were deduced from the observed damage and from measured and computed stress histories.
D. R. Curran, D. A. Shockey, L. Seaman
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Criteria for ductile fracture and their applications
Journal of Mechanical Working Technology, 1980Abstract Criteria for ductile fracture of pore-free materials and porous materials are described. A method of estimating material constants in these criteria is also given. Applications of the criteria to prediction of the fracture strain in several types of metal working processes for pore-free materials and porous materials are described.
Moriya Oyane +3 more
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Local criteria for ductile fracture
International Journal of Fracture Mechanics, 1968Strain distributions in specimens suitable for studying the initiation of fracture are reviewed, and distributions are developed for the steady-state propagation of cracks in plane strain lension of fully plastic materials. The functional forms of local fracture criteria are discussed for different metallurgical mechanisms. It is concluded that: a)
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Fracture Criteria for Piezoelectric Ceramics
Journal of the American Ceramic Society, 1995Fracture criteria for piezoelectric materials were investigated. Mode I and mixed mode fracture tests were performed on PZT‐4 piezoelectric ceramics to verify the validity of the mechanical strain energy release rate as a fracture criterion. Experimental results indicated that crack extension could be aided or impeded by an electric field, depending on
Seungbae Park, Chin‐Teh Sun
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Criteria for nearly brittle fracture
International Journal of Fracture Mechanics, 1968Nearly brittle fracture of solids, that is, brittle fracture without appreciable plastic deformation has been divided into two types. One is low stress fracture in. nearly elastic large structures, which occurs before general yielding. The other is brittle fracture of small laboratory specimens below the ductility transition temperature, which occurs ...
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Interface Fracture: Failure Criteria
Journal of Applied Mechanics, 2020Abstract Failure criteria for a crack between two dissimilar materials are presented. Test data from three different material pairs are considered. The first two consist of an interface crack between glass and epoxy and two dissimilar ceramic clays.
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Criteria for Treating Open Fractures
2002The incidence of severe lower leg trauma seems to be increasing in high-level trauma centres. This is probably due to the widespread use of automobile crash protection systems that mainly protect the upper body and head, but leave the lower part of the legs unprotected.
E. J. Müller, G. Muhr
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