Accession Number : ADA302913

Title :   Mixed-Mode Fracture of Concrete at High Strain Rates.

Descriptive Note : Final rept. Jan 89-Jul 91,

Corporate Author : NORTHWESTERN UNIV EVANSTON IL

Personal Author(s) : Shah, Surendra P.

PDF Url : ADA302913

Report Date : APR 1995

Pagination or Media Count : 155

Abstract : Mixed-mode fracture specimens were tested at quasi-static and impact rate of loading. Laser holographic interferometry, reflection photoelasticity, image processing and high speed photography were used for recording, measurement and analysis of data. Strain fields and crack growth were measured for center notched disk specim?ns. By rotating the notch angle with respect to the loading direction, it was possible to change the failure

Descriptors :   *CONCRETE, *FRACTURE(MECHANICS), *STRAIN RATE, IMAGE PROCESSING, LOAD DISTRIBUTION, DEFORMATION, TENSILE STRESS, CRACKING(FRACTURING), TENSILE PROPERTIES, TOUGHNESS, IMPACT STRENGTH, INTERFEROMETRY, CRACK PROPAGATION, HOLOGRAPHY, REFLECTIVITY, FAILURE(MECHANICS), COMPRESSIVE STRENGTH, PHOTOELASTICITY, CONSTRUCTION MATERIALS, NOTCH TOUGHNESS, HIGH SPEED PHOTOGRAPHY.

Subject Categories : Ceramics, Refractories and Glass
      Construction Equipment, Materials & Supplies
      Holography
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE