A SYSTEM FOR COMPUTER ANALYSIS OF STRESS-STRAIN CURVES

A system for recording and processing of data obtained in tensile tests is described. The electronics (hardware) consists of signal amplifiers (load and elongation), digital voltmeters with binary code decimal output, serializer, and incremental magnetic tape recorder. The operation sequence is controlled by a system of relays, time delays, and an electronic clock. The computer program calculates not only the typical mechanical properties such as yield stress, ultimate stress, and uniform and total elongation, but also more sophisticated properties such as strain-hardening coefficient and Reed-Hill coefficient, which are difficult to obtain by other means. The computer output is in the form of tabulated data and plotted curves. The system has been used in over 300 tests of Zircaloy and aluminum samples. Most of the tests were done on irradiated ring samples cut from the cladding of boiling water reactor fuel rods, but also tube- and plate-type samples have been tested. There was good agreement between the computer- generated values and the values calculated by conventional methods. /Author/

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Olshausen, K D
  • Larsen, J K
• Publication Date: 1975-3

Media Info

• Features: Figures; References;
• Pagination: p. 137-142
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 3
  • Issue Number: 2
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Alloys; Aluminum; Coefficients; Computer programs; Computers; Data collection; Deformation curve; Information processing; Length; Mechanical properties; Metals; Tensile strength; Ultimate strength; Yield strength
• Uncontrolled Terms: Elongation
• Old TRIS Terms: Data recording
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00096134
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 2 1975 12:00AM