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Steel and Composite Structures Volume 24, Number 4, July20 2017 , pages 391-397 DOI: https://doi.org/10.12989/scs.2017.24.4.391 |
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Feasibility study of bonding state detection of explosive composite structure based on nonlinear output frequency response functions |
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Yue Si, Zhou-Suo Zhang, Hong-fang Wang and Fei-Chen Yuan
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| Abstract | ||
| With the increasing application of explosive composite structure in many engineering fields, its interface bonding state detection is more and more significant to avoid catastrophic accidents. However, this task still faces challenges due to the complexity of the bonding interface. In this paper, the concept of nonlinear output frequency response functions (NOFRFs) is introduced to detect the bonding state of explosive composite structure. The NOFRFs can describe the nonlinear characteristics of nonlinear vibrating system. Because of the presence of the bonding interface, explosive composite structure itself is a nonlinear system; when bonding interface of the structure is damaged, its dynamic characteristics show enhanced nonlinear characteristic. Therefore, the NOFRFs-based detection index is proposed as indicator to detect the bonding state of explosive composite pipes. The experimental results verify the effectiveness of the detection approach. | ||
| Key Words | ||
| bonding state detection; explosive composite structure; nonlinear output frequency response functions | ||
| Address | ||
| (1) School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China; (2) State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China. | ||