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Proceedings Paper

Identifying impact load in composite plates based on distributed piezoelectric sensor measurements
Author(s): Michael J. Tracy; Fu-Kuo Chang
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Paper Abstract

This paper presents a computer code, IDIMPACT, based on a proposed impact load identification method for identifying both the amount of the impact load and its location in composite plates from distributed build-in piezoelectric sensor measurements. The proposed method consists of a system model characterizing the dynamic response of composite plates and of a response comparator estimating the impact location and force history by comparing the sensor measurements with the simulated ones. To verify the computer code and the proposed method, instrumented hammer impact tests were conducted on a 36-inch-by-30-inch composite plate with distributed surface-mounted piezo-ceramic sensors. The computer code was implemented in a PC with data acquisition boards to digitize the sensor measurements. The code would automatically run and graphically display the predicted location and impact force-time history from a monitor. The code has reliably with high accuracy predicted the force and location of every impact event that was tested.

Paper Details

Date Published: 1 May 1996
PDF: 6 pages
Proc. SPIE 2717, Smart Structures and Materials 1996: Smart Structures and Integrated Systems, (1 May 1996); doi: 10.1117/12.239025
Show Author Affiliations
Michael J. Tracy, Stanford Univ. (United States)
Fu-Kuo Chang, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 2717:
Smart Structures and Materials 1996: Smart Structures and Integrated Systems
Inderjit Chopra, Editor(s)

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