RESISTANCE HEATING RELEASES STRUCTURAL ADHESIVE
FREQUENTLY, COMPONENTS THAT ARE ADHESIVELY ATTACHED TOGETHER CANNOT BE SEPARATED FROM ONE ANOTHER WITHOUT DAMAGE TO THE MATING SURFACES. THE ADHESIVE ATTACHMENT OF STRAIN GAGES AND ACCELEROMETERS TO TEST SURFACES POSES THIS PROBLEM WHEN TESTING IS COMPLETED AND THE DETECTORS MUST BE REMOVED. A COMPOSITE ADHESIVE PACKAGE CONSISTS /IN ORDER, FROM OUTER SURFACE TO OUTER SURFACE/ OF ADHESIVE, INSULATION, ADHESIVE, HEATING ELEMENT, ADHESIVE, INSULATION, AND ADHESIVE. THIS COMPOSITE IS USED TO BOND THE ITEMS TOGETHER, AND WHEN ITS USE IS NO LONGER REQUIRED AND IT IS DESIRED TO SEPARATE THE BONDED ITEMS, AN ELECTRICAL CURRENT IS APPLIED TO THE HEATING ELEMENT. A CONTROLLED CURRENT IS USED TO RAISE THE TEMPERATURE OF THE ADHESIVE TO THE FAILURE POINT AND THE COMPONENTS ARE EASILY SEPARATED FROM THE NOW BRITTLE ADHESIVE LAYERS. /AUTHOR/
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Supplemental Notes:
- 67-10045, 1 P
- Publication Date: 1967-3
Media Info
Subject/Index Terms
- TRT Terms: Accelerometers; Adhesion; Adhesives; Components; Electric current; Electric insulating materials; Failure; Heating equipment; Insulating materials; Strain gages; Temperature
- Uncontrolled Terms: Separation
- Old TRIS Terms: Resistance heating
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216139
- Record Type: Publication
- Files: TRIS
- Created Date: May 1 1994 12:00AM