Multiscale shear–strain gradient for detecting delamination in composite laminates
M.S. Cao , Maciej Radzieński , W. Xu , Wiesław Ostachowicz
AbstractDelamination is a typical failure mode in composite laminates. For detecting delamination, a new physical concept of a multiscale shear–strain gradient (MSG) is formulated from a vibrational mode shape of a Kirchhoff plate. In a laminate containing a small delamination, the MSG characterizes shear–strain singularities with an explicit physical implication and no need for material properties, in turn manifesting the distribution of the delamination; moreover, multiscale property enables the MSG to identify delaminations at a high noise level. Numerical and experimental results show that the MSG defies the traditional understanding that vibrational features are inappropriate to localize a slight delamination.
|Journal series||Applied Physics Letters, ISSN 0003-6951|
|Publication size in sheets||0.3|
|Keywords in English||damage, identification, model, cracks|
|Score|| = 40.0, 10-01-2020, ArticleFromJournal|
= 40.0, 10-01-2020, ArticleFromJournal
|Publication indicators||: 2013 = 1.634; : 2013 = 3.515 (2) - 2013=3.739 (5)|
|Citation count*||5 (2015-04-09)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.