Journal
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Volume 20, Issue 8, Pages 991-999Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X08100384
Keywords
admittance; electro-mechanical impedance (EMI) technique; low-cost; piezoelectric ceramic (PZT); multimeter; function generator
Categories
Ask authors/readers for more resources
This article outlines new low-cost hardware set-ups as viable substitutes for conventionally employed cost-intensive impedance analyzers/LCR meters for implementation of the electro-mechanical impedance (EMI) technique for SHM/NDE. The proposed solutions warrant basic low-cost equipment, such as function generator and digital multimeter, which are commonly available in most laboratories. Unlike the case of impedance analyzers/LCR meters, only the absolute admittance (i.e., magnitude) is measured. A simple computational approach is outlined for effective utilization of the absolute admittance function for SHM after filtering the passive component. Comparison of results with LCR measurements shows that the measurement accuracy of the proposed set-up is fairly good, repeatability excellent, and the damage sensitivity comparable to that of the cost-intensive conventional hardware. The proposed adaptation is, therefore a suitable candidate for the widespread industrial applications of the EMI technique.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available