Abstract
Mechanical structure during their functional operations may be vulnerable to damages and therefore cannot to be guaranteed definite fault free operational mode and successful exploitation. In this paper, vibration analysis and frequency response analysis of cantilever aluminium beam with bonded piezoelectric transducer are presented by using finite element method in finite element analysis software ANSYS. Cantilever beam vibration response are analysed and numerical results of undamaged beam model are compared to different scenarios of damage presence in structure, by location and depth of single transversal crack. Technique is based on the idea, if a crack appears in mechanical structure, this can be recognized as changes in the physical properties, which leads to cause changes in the modal properties of the structure.
Highlights
Damage detection techniques in mechanical structures and their application are becoming more important in recent years in almost all industries of mechanical, aerospace and civil engineering fields
The variation of the frequency ratio as a function of the crack depth and crack location for cantilever beam models are shown in Tables 1 to 3
Vibration analysis of cantilever beam model have been presented in this paper for damage detection
Summary
Damage detection techniques in mechanical structures and their application are becoming more important in recent years in almost all industries of mechanical, aerospace and civil engineering fields. Conventional inspection techniques and methods can be expensive and time consuming These issues can be considerable overcome by development and implementation of methods and techniques based on equipment that can effectively detect the existence of damage and can provide information regarding the location and the severity of damage in the structure. Piezoelectric transducers, as both sensors and actuators, are commonly used for damage detection in systems for structural health monitoring [1]. These devices have capability for utilization of the converse piezoelectric effect to actuate the structure in addition to the direct effect to sense structural deformation. Piezoelectric sensors and actuator can be bonded onto the surface or can be embedded in to the structures, they have great potential to improve significantly monitoring and damage detection by nondestructive evaluation
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