Results 221 to 230 of about 44,921 (261)

Unique Determination of Multiple Cracks by Two Measurements

SIAM Journal on Control and Optimization, 1996
The inverse problem of determining cracks by boundary measurements consists of finding the shapes and locations of fractures inside a conductor \(\Omega\) by applying finitely many fluxes to the boundary of \(\Omega\) and measuring the induced potentials on the boundary.
ALESSANDRINI, GIOVANNI, A. DIAZ VALENZUELA   +1 more
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Multiple cracking of tantalum by hydrogenation

Metallurgical and Materials Transactions A, 2003
The fracture behavior and microstructure changes of pure Ta by hydrogenation have been investigated to elucidate the fundamentals for hydrogen pulverization, which can be used for producing fine Ta powder with high purity and low cost. Concentric cracks are introduced in a recrystallized Ta plate, with a grain size of about 100 µm, when the Ta plate is
Satoshi Semboshi, Naoya Masahashi, Shuji Hanada   +2 more
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Micromechanics of multiple cracking Part I Fibre analysis

Journal of Materials Science, 1998
Fibre-reinforced brittle materials exhibiting a strain-hardening tensile behaviour undergo a multiple cracking process. A micromechanical analysis of a straight smooth fibre, bridging one or several cracks in a multiply-cracked composite is introduced, taking into account the full or elastic bond, gradual debonding, and frictional sliding of the fibre.
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Multiple cracks in thermoelectroelastic bimaterials

Theoretical and Applied Fracture Mechanics, 1998
Abstract The formulation for thermal stress and electric displacement in an infinite thermopiezoelectric plate with an interface and multiple cracks is presented. Using Green's function approach and the principle of superposition, a system of singular integral equations for the unknown temperature discontinuity defined on each crack face is developed
Q.H. Qin, Y.W. Mai
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Analysis of cracks with multiple branches

International Journal of Fracture, 1983
Solutions for crack tip stress intensity factors were determined by the finite element method for a wide range of branch crack configurations. In the analysis it is assumed that the length of each branch is much smaller than the length of the main crack. For a large majority of the cases analyzed, the branch region was subject to a mode I stress state (
W. K. Wilson, J. Cherepko
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Multiple void-crack interaction

International Journal of Solids and Structures, 1993
Let \(D\) be a multiply connected domain which boundary consists of mutually disjoint circumferences and segments. In order to find the elastic field on \(D\), the authors consider a boundary value problem for a function biharmonic in \(D\). Along lines of the general alternating Schwarz method, the authors reduce the problem to integral equations ...
Hu, K. X., Chandra, A., Huang, Y.
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Influence of crack tip and crack offset distance on crack interaction and growth direction in multiple cracks

International Journal of Structural Integrity, 2013
Purpose – This paper aims to deal with the study of interaction between multiple cracks in an aluminum alloy under static loading. Self-similar as well as non-self-similar crack growth has been observed which depends on the relative crack positions defined by crack offset distance and crack tip distance.
Deepayan Gope, Prakash Chandra Gope, Aruna Thakur   +2 more
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Multiple surface crack interaction of non-coplanar cracks

Hollow cylinders represent one of the important elements in the industry. It is widely recognized that fracture characterizes the predominant mode of failure in cylindrical structures, which is precipitated by inherent imperfections or flaws. Over a period, these imperfections (cracks) may propagate and culminate in catastrophic failure, thereby ...
Mohammed, Omar, Ismail, Al Emran, Kamil, Ali, Jamian, Saifulnizan   +3 more
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Creep Crack Interaction of High Temperature Structure with Multiple Cracks

Key Engineering Materials, 2006
The interaction behavior of two non-aligned through-wall cracks in flat plates is investigated by the finite element method (FEM) under extensive creep condition. The time-dependent fracture parameter C*-integral along the crack tips are calculated and compared to the results of a single crack of the same size.
Jun Si, Fu Zhen Xuan, Shan Tung Tu
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Multiple cracks effects and identification

Mechanical Systems and Signal Processing, 2008
An important rotor fault, which can lead to catastrophic failure if undetected, is fatigue crack in the shaft. The cracked rotor problem received the first attention in 1970, since when the interest among the researchers started. Vibration behavior of cracked structures, in particular cracked rotors, has received considerable attention in the last two ...
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