Accession Number : AD0164927

Title :   Double Cantilever Split-Pin Displacement Gage.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Lange,Eugene A. ; Bryner,Renald F.

Report Date : 01 MAY 1973

Pagination or Media Count : 4

Abstract : This patent is directed to a double cantilever split-pin displacement gage for measuring small displacements such as the operning of a crack in a test specimen. The device is provided with two legs of a particular shape to which strain gages and a half section of a split-pin have been secured. The split-pin halves are formed with cylindrical end probes which are inserted into a hole drilled into a test specimen and as the test specimen separates the strain gages will produce an appropriate electrical signal to indicate the displacement of the separation due to movement of the split-pins in the hole.

Descriptors :   *Crack propagation, *Gages, *Patents, Displacement, Cracks, Electric bridges, Strain gages, Holes(Openings)

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE