Volume 24, Issue 3 (May 1996)

    Determination of the Geometric Profile and Stress/Strain State in the Necked Region During Inelastic Deformation at Elevated Temperatures Using a Non-Contact Measurement Technique

    (Received 5 July 1995; accepted 12 December 1995)

    CODEN: JTEOAD

      Format Pages Price  
    PDF 7 $25   ADD TO CART


    Abstract

    An improved testing methodology for determining the geometric profile and true stress/true strain at elevated temperatures through continuous monitoring of the specimen profile in the necked region using a video camera is demonstrated through a slow creep tensile test. The results show that the video camera is an appropriate tool for accurately monitoring specimen necking at elevated temperatures, and that the true stress and strain can be adequately determined from the specimen profile. Based on this test methodology, true strain rate-controlled creep testing can be carried out. This is essential for determining the true material parameters required for establishing appropriate constitutive equations for realistic finite element modeling.


    Author Information:

    Gaudig, W
    Staatliche Materialprufüngsanstalt, Universität Stuttgart,

    Bothe, K
    Staatliche Materialprufüngsanstalt, Universität Stuttgart,

    Bhaduri, AK
    Indira Gandhi Centre for Atomic Research, Kalpakkam,

    Maile, K
    Staatliche Materialprufüngsanstalt, Universität Stuttgart,


    Stock #: JTE11297J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11297J

    ASTM International is a member of CrossRef.

    Author
    Title Determination of the Geometric Profile and Stress/Strain State in the Necked Region During Inelastic Deformation at Elevated Temperatures Using a Non-Contact Measurement Technique
    Symposium , 0000-00-00
    Committee E28