Piezoelectric Based Lamb Waves Generation and Propagation in Orthotropic CFRP Plates: II. Influence of Interfacial Stress Distribution
| Autor: | V. A. Chebanenko, Maria Shevtsova, Eugeny Rozhkov, Jiing Kae Wu, Evgenia Kirillova, Shun Hsyung Chang, Sergey Shevtsov |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Interfacial stress Distribution (number theory) Wave propagation Mechanical Engineering 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Orthotropic material 01 natural sciences Piezoelectricity Lamb waves Mechanics of Materials 0103 physical sciences General Materials Science Structural health monitoring Piezoelectric actuators Composite material 0210 nano-technology |
| Zdroj: | Materials Science Forum. 962:227-235 |
| ISSN: | 1662-9752 |
| Popis: | This paper investigates the Lamb wave generation by the surface bonded circular piezoelectric (PZT) actuator and wave propagation within the orthotropic Carbon Fiber Reinforced Plastic (CFRP) plate considering the anisotropy of the elastic and damping properties of the materials; existence of the adhesive layer; and dependence of the interfacial stress distribution on the surface between host plate and actuator, on the anisotropy of the plate material, and on the excited frequency, wavelength and plate thickness. This part of our investigation includes FE based study of the shear stress distribution on the interface between circular PZT actuator and surface of orthotropic CFRP plate, and its dependence on the excited wavelength and plate thickness. The anisotropic elastic and damping properties of the plate material, which are used in the implemented finite element (FE) model, have been preliminary determined in the first part of our investigation. We compare the behavior of the wave generation, propagation and attenuation that are studied using this model with the similar dependencies obtained at the simulation of the non-dissipating plate excited by the periodical radially oriented force, which is distributed along the circumference bounding the actuator, i.e. 3D pin-force excitation case. The proposed results can be used at the design of SHM for the composite structures with the structural anisotropy and damping, and at making a reasonable choice of the frequency, type, dimensions and optimum placement of the actuators and sensors. |
| Databáze: | OpenAIRE |
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