Smart structures for shock wave attenuation using ER inserts

Jaehwan Kim; Jung-Yup Kim; Seung-Bok Choi; Kyung-Su Kim

doi:10.1117/12.436527

16 August 2001 Smart structures for shock wave attenuation using ER inserts

Jaehwan Kim, Jung-Yup Kim, Seung-Bok Choi, Kyung-Su Kim

Proceedings Volume 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems; (2001) https://doi.org/10.1117/12.436527
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

This Paper demonstrates the possibility of shock wave attenuation propagating through a smart structure that incorporates ER insert. The wave transmission of ER inserted beam is theoretically derived using Mead & Markus model and the theoretical results are compared with the finite element analysis results. To experimentally verify the shock wave attenuation, ER insert in an aluminum plate is made and two piezoceramic disks are used as transmitter and receiver of the wave. The transmitter sends a sine pulse signal such that a component of shock wave travels through the plate structure and the receiver gets the transmitted wave signal. Wave propagation of the ER insert can be adjusted by changing the applied electric field on the ER insert. Details of the experiment are addressed and the possibility of shock wave attenuation is experimentally verified. This kind of smart structure can be used for warship and submarine hull structures to protect fragile and important equipment.

Citation Download Citation

Jaehwan Kim, Jung-Yup Kim, Seung-Bok Choi, and Kyung-Su Kim "Smart structures for shock wave attenuation using ER inserts", Proc. SPIE 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems, (16 August 2001); https://doi.org/10.1117/12.436527

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