Accession Number : ADA266331


Title :   High Temperature Strain Measurements Using Digital Optics


Descriptive Note : Final rept. Sep 1989-Sep 1991


Corporate Author : TERRA TEK INC SALT LAKE CITY UT


Personal Author(s) : Nielsen, Randy R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a266331.pdf


Report Date : Sep 1991


Pagination or Media Count : 38


Abstract : Current methods used to measure strain at high temperatures depend on undesireable attachments or indentations and are generally limited to temperatures below 1800 deg F. The objective of this effort is to develop, construct, and demonstrate an ultrahigh-temperature strain measurement system using unobtrusive thin material coatings applied to test samples as reference marks for optical strain monitoring. The contents of this report describe the development of a system capable of measuring strain on specimens at temperatures ranging from room temperature to above 2000 deg F.


Descriptors :   *OPTICAL PROPERTIES , *STRAIN RATE , *STRAIN GAGES , *COATINGS , TEST AND EVALUATION , STRESS STRAIN RELATIONS , TEMPERATURE , TRANSDUCERS , RADIOFREQUENCY , CAMERA LENSES , GAGES , SPUTTERING , MATERIALS , ROOM TEMPERATURE , HIGH TEMPERATURE , MONITORING , DIGITAL SYSTEMS , MEASUREMENT


Subject Categories : Coatings, Colorants and Finishes
      Optics
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE