Accession Number : ADD016536

Title :   Material Characterization System.

Descriptive Note : Patent, Filed 8 Feb 91, patented 13 Sep 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lee, Gilbert F ; Hartmann, Bruce

Report Date : 13 Sep 1994

Pagination or Media Count : 10

Abstract : A plurality of elongated test specimens undergo vibrations induced by random noise within an acoustical frequency range establishing standing waves therein having resonant frequencies at which the collection of measurement data through accelerometers mounted at the ends of the specimens provides for calculation of physical material properties. The processing of the data during collection, analysis and calculation is automated by programmed computer control.

Descriptors :   *PATENTS, *PHYSICAL PROPERTIES, ACCELEROMETERS, COMPUTERS, FREQUENCY, MATERIALS, MEASUREMENT, NOISE, RESONANT FREQUENCY, STANDING WAVES, TEST AND EVALUATION, VIBRATION, ACOUSTIC WAVES, ELONGATION, SPECTRUM ANALYZERS, POWER AMPLIFIERS, MODULUS OF ELASTICITY, TEST EQUIPMENT

Subject Categories : Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE