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MODELING OF SMART PATCH/LAYER JOINTS UNDER DYNAMIC TIME HARMONIC LOAD WITH INTERFACE DEFECT
Author(s) -
Petrova Tatyana S.,
Becker Wilfried,
Kirilova Elisaveta G.,
Ivanova Jordanka A.
Publication year - 2017
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.548
Subject(s) - materials science , piezoelectricity , interface (matter) , shear stress , layer (electronics) , harmonic , shear (geology) , stress (linguistics) , acoustics , structural engineering , composite material , engineering , physics , linguistics , philosophy , capillary number , capillary action
The modified 1D shear lag analysis is applied to study the hygro‐thermal‐piezoelectric response of a smart patch/layer structure with and without an interface gap along the overlap zone at environmental conditions and under dynamic time harmonic and electrical loads. The overlap zone is divided into 3 parts – 2 of them belong to intact parts of the interface and 1 of them to the length of the gap. All three types of closed form analytical solutions are derived and obtained. The comparison of the model shear stress, electric gradient, stresses and debond length for both cases of the interface (continuous or with a gap) is done at an example of a PZT‐5H/CFRP structure. All results are shown in figures and discussed.