Accession Number : ADA198125

Title :   Evaluation of a Hand-Held Frictional Strain Gauge.

Descriptive Note : Aircraft structures technical memo.,

Corporate Author : AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)

Personal Author(s) : Stimson, M G ; Sparrow, J G

PDF Url : ADA198125

Report Date : Dec 1987

Pagination or Media Count : 26

Abstract : The Aeronautical Research Laboratories (ARL) Structures Division has acquired a commercially available instrument for obtaining strain values from a cyclically loaded flat surface. This strain gauge has the advantage over a conventional bonded gauge in that it can be applied with little or no preparation time. This advantage makes it useful in conjunction with the SPATE 8000 thermal stress pattern imager which is usually calibrated by obtaining a cyclic strain reading from within the field of view of the article under test. Use of a conventional bonded gauge on the article necessarily obscures some area within the field of view. Experiments were performed to show that an electrical signal linearly dependent on the strain amplitude could be obtained. The accuracy and repeatability of this signal was checked for different frequencies and effects of surface cleanliness. Keywords: Canada. (jes)

Descriptors :   *GAGES, ACCURACY, BONDED JOINTS, CANADA, ELECTRICITY, FRICTION, HAND HELD, PREPARATION, SIGNALS, STRAIN GAGES, TIME

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE