Accession Number : AD0268888

Title :   MEASUREMENT OF DISPLACEMENTS IN CONTACT-STRESS EXPERIMENTS

Corporate Author : MINNESOTA UNIV MINNEAPOLIS

Personal Author(s) : BOWIE,G.E.

Report Date : OCT 1961

Pagination or Media Count : 1

Abstract : A major part of the instrumentation for contactstress investigations being carried out at the University of Minnesota has the function of providing displacement measurements in the microinch range. A modified phonograph-type displacement pickup and an interferometer for calibrating it are described. In addition, there are described a piezoelectric driving transducer used to load spheres upon which experiments are performed, a capacitance-type displacement pickup, and modifications of an Instron testing machine upon which the apparatus is mounted. (Author)

Descriptors :   *DEFORMATION, *STRAIN GAGES, *STRESSES, CALIBRATION, ENERGY, INSTRUMENTATION, INTERFEROMETERS, LOAD DISTRIBUTION, MACHINES, MEASUREMENT, OPTICAL EQUIPMENT, PIEZOELECTRIC EFFECT, TEST EQUIPMENT, TRANSDUCERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE