ISSN: 0090-3973
Page Count: 8

Improved Impulse-Frequency Response Techniques for Measurement of Dynamic Mechanical Properties of Composite Materials
Suarez, SA
Facultad De Ingeniera Mecanica, Escuela Politechnical Nacional, APTDO,

Gibson, RF
Professor, University of Idaho, ID

Abstract

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.

Keywords:
composite materials, dynamic mechanical properties, damping, impulse testing, frequency analysis

Paper ID: JTE10991J
DOI: 10.1520/JTE10991J
ASTM International is a member of CrossRef.