Diagnostic tool for structural health monitoring: effect of material nonlinearity and vibro-impact process

被引：0
|
作者：
Hiwarkar, V. R. [1 ]
Babitsky, V. I. [2 ]
Silberschmidt, V. V. [2 ]
机构：
[1] Univ Nottingham, Nottingham NG7 2RD, England
[2] Univ Loughborough, Wolfson Sch Mech & Mfg Engn, Loughborough LE11 3TU, Leics, England
来源：
INTERNATIONAL SYMPOSIUM ON DYNAMIC DEFORMATION AND FRACTURE OF ADVANCED MATERIALS (D2FAM 2013) | 2013年 / 451卷
关键词：
BEAM; VIBRATION; IDENTIFICATION; BEHAVIOR; DYNAMICS;
D O I：
10.1088/1742-6596/451/1/012027
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Numerous techniques are available for monitoring structural health. Most of these techniques are expensive and time-consuming. In this paper, vibration-based techniques are explored together with their use as diagnostic tools for structural health monitoring. Finite-element simulations are used to study the effect of material nonlinearity on dynamics of a cracked bar. Additionally, several experiments are performed to study the effect of vibro-impact behavior of crack on its dynamics. It was observed that a change in the natural frequency of the cracked bar due to crack-tip plasticity and vibro-impact behavior linked to interaction of crack faces, obtained from experiments, led to generation of higher harmonics; this can be used as a diagnostic tool for structural health monitoring.
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页数：7
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