4.7 Article

Modelling the electrical resistance change in a multidirectional laminate with a delamination

期刊

COMPOSITES SCIENCE AND TECHNOLOGY
卷 162, 期 -, 页码 225-234

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ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2018.04.031

关键词

Structural Health Monitoring (SHM); Damage detection; Carbon nanotubes; Electrical resistance measurement; Delamination

资金

  1. High Performance Computing Lab at the Department of Management and Engineering (DTG)
  2. University of Padova

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In this work, the electrical response of a multidirectional symmetric composite laminate with a delamination is studied analytically, numerically and experimentally. An analytical model is initially developed to predict the electrical resistance of the composite laminate as a function of the delamination extent. The model was first validated against the results of a bulk of finite element analyses, considering different lay-ups and electrical resistivity. The model predictions were then compared to experimental data obtained through a dedicated experimental campaign performed on unidirectional and multidirectional Double Cantilever Beam (DCB) specimens. A satisfactory agreement was found in all the cases, thus supporting the accuracy of the analytical model.

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