FORCED TORSIONAL OSCILLATOR FOR DYNAMIC MECHANICAL MEASUREMENTS.

William M. Davis, Chris Macosko

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

In this report, a forced torsional oscillator (FTO) for measuring dynamic properties from 0. 01 to 30 Hz and minus 190 degree to plus 250 degree C is described. It uses digital transfer function analyzer (DTFA) to determine G prime and G double prime directly. The DTFA has a phase angle resolution of 0. 1 degree . Other errors such as clamping corrections and instrument phase shift are discussed. FTO measurements on polymethylmethacrylate and polycarbonate compare well with free torsion pendulum data. Design of the forced torsion oscillator system is included.

Original languageEnglish (US)
Pages408-410
Number of pages3
StatePublished - Jan 1 1976
EventSPE Annu Tech Conf, 34th, Proc - Atlantic City, NJ
Duration: Apr 26 1976Apr 29 1976

Other

OtherSPE Annu Tech Conf, 34th, Proc
CityAtlantic City, NJ
Period4/26/764/29/76

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    Davis, W. M., & Macosko, C. (1976). FORCED TORSIONAL OSCILLATOR FOR DYNAMIC MECHANICAL MEASUREMENTS.. 408-410. Paper presented at SPE Annu Tech Conf, 34th, Proc, Atlantic City, NJ, .