Accession Number : AD0865551

Title :   An Optical Extensometer Technique For Strain Measurement.

Descriptive Note : Technical rept.,

Corporate Author : ROHM AND HAAS CO HUNTSVILLE AL REDSTONE RESEARCH LABS

Personal Author(s) : Sigmon, William M.

Report Date : MAR 1970

Pagination or Media Count : 29

Abstract : In the past, accurate measurement of strains in propellant materials has often beendifficult. However, electro-optical gaging instruments now commercially availablehave shown promise in solving some of the problems of the past. These instrumentsrequire no physical contact with test samples and are adaptable to a wide range ofsample dimensions and test conditions. This report discusses the application of anelectro-optical extensometer to propellant strain measurement in these laboratories. Operating procedures, accuracy, problems encountered, and solution to the problems areall described. Typical test records are presented. (Author, modified-PL)

Descriptors :   (*SOLID ROCKET PROPELLANTS, TENSILE PROPERTIES), (*OPTICAL INSTRUMENTS, EXTENSOMETERS), (*EXTENSOMETERS, RELIABILITY(ELECTRONICS)), MEASURING INSTRUMENTS, ROCKET PROPELLANT GRAINS, LOADS(FORCES), STRAIN(MECHANICS), MEASUREMENT, TEST METHODS.

Subject Categories : Test Facilities, Equipment and Methods
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE