A STANDARDIZING STRAIN GAGE FOR MEASUREMENTS REQUIRING LONG-TIME STABILITY

A NEW TYPE OF UNBONDED ELASTIC WIRE STRAIN GAGE IS DESCRIBED. STRAINS ARE DETERMINED BY MEASURING THE CHANGES IN ELECTRICAL RESISTANCE OF THE ELASTIC WIRE WITH CONVENTIONAL STRAIN BRIDGES, BUT LONG-TIME STABILITY IS ACHIEVED IN A NOVEL MANNER BY REFERRING ALL STRAIN MEASUREMENTS TO A BUILT-IN INVAR LENGTH STANDARD. THE PERFORMANCE OF ONE STANDARDIZING STRAIN GAGE WAS EVALUATED BY COMPARISON WITH A 10-IN. WHITTEMORE GAGE. THE STANDARDIZING GAGE CAN BE SURFACE-MOUNTED OR EMBEDDED IN CONCRETE. /AUTHOR/

Media Info

  • Monograph Title: Instrumentation for measuring characteristics of concrete
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00213253
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 23 1994 12:00AM