Journal Published Online: 01 July 1975
Volume 3, Issue 4

An Extensometer for Circumferential Strains

CODEN: JTEVAB

Abstract

An instrument is described for measuring circumferential strains in plastic specimens of circular cross section. It consists of four direct-current differential transformers (DCDTs) suitably mounted on an invar ring. The DCDTs probe the position of the surface of the specimen at opposite ends of two mutually perpendicular diameters. Examples of performance are given for creep of a thin-walled tube of polyurethane.

Author Information

Findley, WN
Division of Engineering, Brown University, Providence, R.I.
Reed, RM
Division of Engineering, Brown University, Providence, R.I.
Pages: 3
Price: $25.00
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Details
Stock #: JTE10659J
ISSN: 0090-3973
DOI: 10.1520/JTE10659J