AN EXPERIMENTAL METHOD OF DETERMINING THERMAL STRAINS

IF A STRESS-FREEZING PHOTOELASTIC PLASTIC IS ALLOWED TO COOL THROUGH THE FREEZING BAND WHILE SUPPORTING A TEMPERATURE PROFILE, THE RESULTING STRAIN SYSTEM CONSISTS OF TWO PARTS, A FROZEN PART AND AN UNFROZEN PART. IN THE EXPERIMENTS REPORTED IN THIS PAPER, APPROXIMATELY 95 PERCENT OF THE UNFROZEN PART BEARS A KNOWN THEORETICAL RELATIONSHIP TO THE ROOM-TEMPERATURE MODULUS, COEFFICIENT OF EXPANSION AND POISSON'S RATIO OF THE MATERIAL. IT IS ARGUED THAT IF, AFTER FREEZING, ELECTRICAL-RESISTANCE STRAIN-GAGE ROSETTES ARE ATTACHED TO THE MODEL, AND THE MAIN BODY OF THE MODEL REMOVED FROM THE ROSETTE AND THE SURFACE TO WHICH IT IS ATTACHED, THE SURFACE THERMAL STRAINS CORRESPONDING TO THE INITIAL TEMPERATURE PROFILE ARE OBTAINED. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00144851
• Supplemental Notes:
  • Vol 9, No 7, PP 327-331, 7 FIG, 7 REF, 1 APP
• Authors:
  • Haines, D J
  • WRIGHT, G P
• Publication Date: 1969-7

Media Info

• Serial:
  • Experimental Mechanics
  • Publisher: Society for Experimental Mechanics
  • ISSN: 0014-4851

Subject/Index Terms

• TRT Terms: Freezing; Photoelasticity; Plastics; Poisson ratio; Residual stress; Strain gages; Temperature; Thermal expansion; Thermal stresses
• Old TRIS Terms: Electrical strain gages; Poissons ratio
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216862
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 1994 12:00AM