Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Edge Crack"”.
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On the Thermal Stresses Due to a Uniform Heat Flow Past a Circular Hole With a Radial Edge Crack
… of an insulated circular hole with a radial edge crack. By superimposing a Mellin transform solution of the equations of thermoelasticity on a Michell series solution the author reduces the problem to a pair of singular integral equations which are then solved numerically. The stress …
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Stress intensity factors of edge cracks in dissimilar joint plates
… mismatch and may lead to catastrophic failure or crack. Hence, this study will focused on the stress intensity factor on edge crack between dissimilar joint plates. The study focused on the investigation of edge crack behavior of dissimilar joint plates and to find out stress intensity factor …
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ΘΕΩΡΗΤΙΚΗ ΚΑΙ ΠΕΙΡΑΜΑΤΙΚΗ ΜΕΛΕΤΗ ΠΡΟΒΛΗΜΑΤΩΝ ΡΩΓΜΩΝ ΣΕ ΣΥΝΘΕΤΕΣ ΠΛΑΚΕΣ
… OF THE EVALUATION OF THE STRESS SINGULARITY OF A CRACK TERMINATED AT THE APEX OF A BIWEDGE, WHICH IS LOADED EITHER BY PRESCRIBED TRACTIONS OR DISPLACEMENTS. IN THE FOURTH CHAPTER, THE INFLUENCE OF A CIRCULAR INCLUSION ON THE PREVAILING STRESS STATE IN A CRACKED PLATE, WHICH IS SUBMITTED AT …
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Evaluation of efficiency of partial hybrid finite element method using composite laminates with crack
… stress fields around interior delamination crack tips in composite laminates subjected to out-of-plane loading. The stress field consisting of both in-plane and out-of-plane components around a through thickness edge crack in a laminated composite under uniaxial tension is also studied. The …
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The topological derivative and its applications to fracture-based analysis and design
… such as the introduction of an infinitesimal crack or hole. In a previous work, Silva et al. [1] developed a first-order approximation of the energy release rate field in a two-dimensional domain associated with a small edge crack at any boundary location and any orientation. In this thesis, …
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Fracture of a Model Functionally Graded Material Manufactured From a Photo-Sensitive Polyethylene
… using uniaxial tensile tests. Single edge notched tension graded ECO specimens possessing different combinations of spatial variations of Young's modulus, failure stress and failure strain, were tested under remote pure opening (mode I) and in-plane mixed mode loading conditions. Mixed …
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Vibration Analysis of Cracked Composite Bending-torsion Beams for Damage Diagnosis
An analytical model of cracked composite beams vibrating in coupled bending-torsion is developed. The beam is made of fiber-reinforced composite with fiber angles in each ply aligned in the same direction. The crack is assumed open. The local flexibility concept is implemented to model the open …
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EXPERIMENTAL STUDIES OF THE MECHANICAL BEHAVIOR OF A PVA DUAL-CROSSLINK HYDROGEL
… (DIC) system to measure the deformation near the crack tip of a cracked specimen. Experimental details such as how to prepare a durable speckle pattern on a material that is 90% water are discussed. DIC is used to measure the strain field in tension loaded samples containing a central hole, a …
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Effect of grain structure and doping on the mechanical properties of polysilicon thin films for MEMS
… the tensile strength and the local resistance to crack initiation in 1-μm thick polysilicon films, as quantified by the effective mode I critical stress intensity factor, KIC,eff. For the purposes of this study microscale polysilicon thin film specimens were fabricated by a custom process at the …
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Numerical Simulation of Adiabatic Shear Bands and Crack Propagation in Thermoviscoplastic Materials
… the stress intensity factor (SIF) in a double edge-cracked plate. Deformations of the plate are studied both with and without exploiting the symmetry conditions. The penalty method is used to enforce the essential boundary condition in the former case. When analyzing the deformations of the …
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A Numerical Based Determination of Stress Intensity Factors for Partially Cracked Flexural I-shaped Cross-sections
… evaluation are consistently revised using knowledge of previous bridge failures. Although modern steel structures are designed to resist fatigue cracking from service loads, cracks in the tension flanges of steel bridge girders have been observed as a result of stress concentrations, design …