Journal Published Online: 01 March 1987
Volume 15, Issue 2

Improved Impulse-Frequency Response Techniques for Measurement of Dynamic Mechanical Properties of Composite Materials



The dynamic mechanical properties of composite material specimens are rapidly determined by using two new computer-aided impulse techniques. Small beam specimens are excited in either flexural or extensional vibration by an electromagnetic hammer with a force transducer in its tip, while specimen response is measured with an eddy current probe or accelerometer. A desktop computer/Fast Fourier Transform analyzer system is then used for rapid data acquisition and computation of the complex modulus by curve-fitting to the frequency response function.

Author Information

Suarez, SA
Facultad De Ingeniera Mecanica, Escuela Politechnical Nacional, APTDO, Quito, Ecuador
Gibson, RF
University of Idaho, Moscow, ID
Pages: 8
Price: $25.00
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Stock #: JTE10991J
ISSN: 0090-3973
DOI: 10.1520/JTE10991J