Results 251 to 260 of about 1,660,548 (303)

Energy Release Rates from Hybrid Fuels

Transactions of the ASAE, 1984
ABSTRACT HEAT release patterns of hybrid fuels containing diesel fuel and soybean oil in a microemulsion with ethanol were compared to those of straight diesel fuel. A naturally-aspirated direct-injection diesel engine was used. The hybrid fuels were found to burn faster with higher levels of premixed burning and lower levels of diffusion flame burning
null J. J. Faletti, null S. C. Sorenson, null C. E. Goering   +2 more
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Energy Release Rate in Piezoelectric Media

International Journal of Fracture, 1999
First, some path-independent integrals for piezoelectric media are constructed by considering the gradient of the energy stored in deformation and electric field. Secondly, it is proved that one of the path-independent integrals represents the energy release rate when crack extension happens.
Shi Weichen, Zhen-Bang Kuang
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Energy release rate and crack kinking

International Journal of Solids and Structures, 1981
Abstract A closed form solution is presented for the energy release rate at the onset of kinking of a straight crack in an infinite elastic medium subjected to a predominantly Mode I loading. The solution is accurate to the second order of kink angle and is carried out by the method which models the kink as a continuous distribution of infinitesimal ...
Hayashi, K., Nemat-Nasser, S.
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Energy-Release Rate in Elastic-Plastic Fracture Problems

Journal of Applied Mechanics, 1981
It is shown that the energy-release rates associated with the translation, rotation, self-similar expansion and distortion of the fracture process region are expressed by the newly introduced integrals, Jˆ, Lˆ, Mˆ, and Iˆ. These integrals can be defined even if there exist plastic deformation, thermal strains, body forces, and inertia forces.
Aoki, S., Kishimoto, K., Sakata, M.
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Energy release rate of symmetric adhesive joints

Engineering Fracture Mechanics, 1992
Abstract A formula is derived for the mixed mode energy release rate of adhesive joints in terms of local stress concentrations σmax and τmax determined by beam theory. The formula G= 1 2 t E′ a σ 2 max 1 2 t G a τ 2 max is equivalent to a similar expression from two-dimensional elasticity ...
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On Energy-Release Rates for a Plane Crack

Journal of Applied Mechanics, 1981
Considered is a plane crack in a homogeneous, static stress field. The component of the Ji integral normal to the plane of the crack (J2) is shown not to be path-independent in the sense of the well-known J integral (≡ J1) parallel to the plane of the crack. The relation between the energy-release rate for rotation L and the integral J2 is established.
Golebiewska Herrmann, A., Herrmann, G.
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On the Estimation of Energy Release Rates

Journal of Applied Mechanics, 1983
The energy release rate associated with the Mode I and Mode III crack problems for an infinite, nonlinearly elastic, incompressible body are estimated. The calculation adopts an approximation that is a natural extension of the small-scale yielding concept to problems involving moderate levels of loading.
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Energy release rate of moving circular-cracks

Engineering Fracture Mechanics, 2019
Abstract The behavior of fast straight-cracks in brittle, linear-elastic solids was described exactly nearly half-a-century ago by Freund. However, the subsequent attempts to describe analytically the velocity and the energy release rate of fast circular-cracks predicted behaviors which were inconsistent with the observed, experimental evidence.
Roberto Dugnani, Lingyue Ma
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Pointwise energy release rate in delaminated plates

AIAA Journal, 1995
A laminated plate theory suitable for analyzing delaminations has been derived. The theory is used to study the interaction between the top and bottom sublaminates in the intact region of a delaminated plate. Expressions are derived for the jump in force and moment resultants that occur across the delamination front.
Sankar, B. V., Sonik, V.
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Fracture energy release rate of adhesive joints

International Journal of Adhesion and Adhesives, 1989
Abstract This study was directed towards developing a criterion for estimating the interface separation load for adhesive joints of two dissimilar materials, and comprised the evaluation of the strain energy release rate as such a criterion. A finite element model was used in which attention was focused on Mode I and II failures and a mixed mode ...
S.A. Hamoush, S.H. Ahmad
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