Results 251 to 260 of about 44,040 (298)

A computational model of peridynamic theory for deflecting behavior of crack propagation with micro-cracks [PDF]

Computational Materials Science, 2019
The critical effect of micro level defects should be examined at macro level to better understand the fracture behaviors of engineering materials. This study investigates the branching and deflecting behavior of a macro (main) crack in presence of ...
Muhammed Fatih Basoglu, Zihni Zerin, Adnan Kefal   +2 more
exaly   +1 more source

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Analysis and simulation of cracks and micro cracks in PV cells

2013 14th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE), 2013
The goal in this analysis is to undestand more about the progressing of preexisting cracks in silicon solar cells under different enviromental loads. This enables to estimate critical crack sizes and reduce the losses and to improve realibility. In this work we present a 2D finite element model of encapsulated silicon solar cells containing cracks on ...
J. Al Ahmar, S. Wiese
openaire   +1 more source

Effect of micro cracks on photovoltaic output power: case study based on real time long term data measurements [PDF]

Micro and Nano Letters, 2017
This study analyses the impact of micro cracks on photovoltaic (PV) module output power performance and energy production. Electroluminescence imaging technique was used to detect micro cracks affecting PV modules.
Mahmoud Dhimish, Violeta Holmes, Mark Dales   +2 more
exaly   +2 more sources

Interacting micro-cracks near the tip in the process zone of a macro-crack

Journal of the Mechanics and Physics of Solids, 1987
For a linearly elastic and isotropic solid containing two or more cracks, cavities and other interacting defects of complex geometries, a method called ''the method of pseudo-tractions'' has been recently proposed by the authors [e.g. Int. J. Solids Struct.
Hori, Muneo, Nemat-Nasser, Siavouche
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Transformation toughening in ceramic with martensites or micro-cracks

International Journal of Engineering Science, 1991
We present a method of calculating the decrease of stress intensity factor without considering the microstructural details or performing an incremental analysis. Regardless of the history of loading and unloading, the current crack opening displacement is all the information needed for the calculation.
Gao, Zhanjun, Mura, Toshio
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Influence of initial micro-crack damage on strength and micro-cracking behavior of an intrusive crystalline rock

Bulletin of Engineering Geology and the Environment, 2018
Rocks inherently contain some micro-cracks. The existence of initial micro-cracks introduces weakness to the rock specimen and hence affects the strength and deformation behavior of rocks. This paper numerically investigates the influence of initial micro-crack damage on the strength and deformation behavior and the associated micro-cracking process of
Peng, Jun, Wong, Louis Ngai Yuen, Liu, Guang, Teh, Cee Ing   +3 more
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Micro-mechanics of crack initiation

International Journal of Fracture, 1990
Prior to the crack initiation, damage is most often localized at a scale below the size of the classical representative volume element of the continuum mechanics. This allows the stress and strain analyses in a component to neglect the strain-damage coupling at macro-scale.
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Micro-potential model for stress?strain hysteresis of micro-cracked materials

Journal of the Mechanics and Physics of Solids, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aleshin, V., Van Den Abeele, K.
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Crack tip shielding by micro-cracking in brittle solids

Acta Metallurgica, 1987
Abstract The effect of profuse micro-cracking at the tip of a macroscopic crack is studied with emphasis on the reduction in stress intensity, or shielding, within the micro-crack region. Shielding contributions arise from two consequences of micro-cracking, reduction in stiffness and release of residual stress. For the most part the study is limited
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Simulation of Polycrystalline Ceramics with Micro-Cracks

MRS Proceedings, 2002
AbstractThe micro FEM model, which was considered in the middle bottom of a four-point bending macro FEM model, was constructed from a SEM micrograph of an Al2O3-10vol%ZrO2 ceramic, in which the crystallographic information was given to each grain randomly. One micro-crack was introduced in the micro FEM model as a basic case to simulate the four-point
Jianwu Cao, Yoshihisa Sakaida, Yasuo Nagano, Hiroshi Kawamoto   +3 more
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