Deformation of a shell structure with bonded/embedded smart patch for biomedical applications
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Proceedings of SPIE - The International Society for Optical Engineering, ISSN: 0277-786X, Vol: 3321, Page: 615-623
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- Materials Science; Physics and Astronomy; Computer Science; Mathematics; Engineering; Aerospace Engineering; Mechanical Engineering
conference paper description
Vibrations caused by cyclic loads acting on structures are, in general, undesirable as they lead to fatigue failure. However, there are situations in which vibrations of structures are desirable. An outstanding example of this situation is the myocardium, the heart muscle. When arteries that supply blood to the heart become occluded due to heart disease, the heart muscle around the occlusion suffers oxygen depletion and results in a myocardial infarct. The presence of an infarct in the myocardium makes the pumping action of the heart weak thus making the heart partially dysfunctional. To address this difficulty, the problem of the myocardium with bonded/embedded smart patch, which is subjected to an electric field, is formulated and the deformations of the myocardium are calculated. The smart patches considered in this study include poly-vinylidene fluoride (PVDF) and lead zirconate titanate (PZT). The deformed configurations are calculated using a finite element method. The electric field is applied in a cyclic fashion to create a volume change in the closed myocardial structure to simulate the pumping action of the heart. The calculated shell-like configurations appear to be compatible with biomedical requirements.