Low velocity impacts and damage identification with Lamb waves Год выпуска: 2015Автор: Simone TancrediИздательство: LAP Lambert Academic PublishingСтраниц: 92ISBN: 9783659385889Описание In this work an efficient thus computationally low cost FEM modeling technique of both low velocity impacts and Lamb waves propagation events, involving Piezoelectric Wafer Active Sensors (PWAS), is presented. In Chapter 1 both the excitation and sensing of Lamb waves are investigated. The PWAS modeling techniques gave excellent results, as clear from the comparisons with the experimental curves. The great advantage of this modeling is represented by the low computational cost. In Chapter 2 the outputs from PWAS, during low velocity impact events, are investigated. The experimental curves registered during impacts on both aluminum and composite plates were compared with the FEM ones, obtained by considering only geometrical variables of the sensors. In Chapter 3 a test case for damage detection in thin plates with Lamb waves is presented, thus proving the advantage of the PWAS modeling technique for SHM purposes. The substantial improvement of a fast FEM solution is the possibility to...
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Вера, 14.04 Я просто еще раз хочу вас отблагодарить за вашу помощь. Простите, если я написала вам грубо в предыдущих письмах. Я очень взволнована, все упирается во время и т.к. я ответственно отношусь к образованию, по этому предмету немножко отстаю и это заставляет меня переживать. Я знаю, что вы профессионал своего дела и я уверена, что вы ответственно относитесь к этому тоже. Мне посоветовали Вас, как хорошего специалиста, поэтому я бы хотела исчерпать недопонимания для дальнейшего сотрудничества с Вами. Спасибо еще раз.
