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Lekhniskii theory is extended to the researches on one-dimensional piezoelectric quasicrystals. Considering the quasicrystals with a single crack subjected to uniform loads at infinity, the field intensity factors and strain energy release rate are obtained. The weight function is derived when the point forces are applied near the crack tip. The field intensity factors of piezoelectric quasicrystals...
By using the general solutions of one-dimensional quasicrystals with piezoelectric effect and introducing four potential functions, the plane problem of orthorhombic piezoelectric QCs subjected to the point forces and point charge is taken into account. The fundamental solutions in a closed form are obtained and the numerical results are given. The mechanical behaviors of 1D piezoelectric QC with...
SAW actuators are required for a micro actuator due to their high output force and direct drive. A new type IDT, Floating Electrode Unidirectional Transducer (FEUDT) is implemented by using MEMS technologies in the paper. The optimal designs were proposed and compared with others in the end. The dimensions of the FEUDT are 5 mm aperture size, 80 mum pitch, 6.7 mum strip width, 0.8 mum thick. In comparison...
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