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Stress and failure analysis of crimped metal-composite joints used in electrical insulators subjected to bending

John Botsis, Thomas Gmür, Alain Michel Prenleloup
2009
Journal paper
Abstract

Experimental and numerical investigations are carried out on metal/fibregiass-reinforced-plastic joints integrated in electrical insulators subject to bending. Numerical stress and strain distributions through the bond are calculated with a solid 3D finite element model and the damage initiation in the composite is highlighted. The simulations are compared to experimental data obtained from several joint specimens tested under bending on an experimental setup equipped with strain gauges and a six-channel acoustic emission system. Good correlation between the finite element predictions and the test results is found. The investigations have identified the stress concentrations in the rod, the onset of damage when the load-displacement curve characterizing the bending test deviates from linearity, and the different failure mechanisms. (C) 2009 Elsevier Ltd. All rights reserved.

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Ontological neighbourhood
Chemical engineering
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Stress–strain analysis
Stress–strain analysis (or stress analysis) is an engineering discipline that uses many methods to determine the stresses and strains in materials and structures subjected to forces. In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material. In simple terms we can define stress as the force of resistance per unit area, offered by a body against deformation.
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Failure mode and effects analysis (FMEA; often written with "failure modes" in plural) is the process of reviewing as many components, assemblies, and subsystems as possible to identify potential failure modes in a system and their causes and effects. For each component, the failure modes and their resulting effects on the rest of the system are recorded in a specific FMEA worksheet. There are numerous variations of such worksheets.
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