You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    Volume 45, Issue 4 (July 2017)

    Load-Separation Method, Spb, Used to Estimate Crack Extension for J-R Curves, Modified for Geometric Variations in Blunt-Notched Remaining Ligament

    (Received 11 March 2015; accepted 6 June 2016)

    Published Online: 20 July 2017

    CODEN: JTEVAB

      Format Pages Price  
    PDF (1.25 MB) 12 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    The Spb method estimates stable crack growth in fracture mechanics precracked specimens test. It compares the load ratio between a precracked specimen that exhibits stable crack growth and a blunt-notched specimen with apparent constant crack length when tested at constant displacement. When it was applied to very tough material, it was found that blunt-notched remaining ligaments varied by as much as 11.83 %, affecting visibly the results. Therefore, to apply the Spb method to very tough material for which non-standard specimens could be used as coiled tubing, the methodology limits are investigated. In this work, particularly the effect of geometry changes through an incipient crack growth produced on the blunt-notched specimens for very tough materials is analyzed. Hence, a modified Spb method is presented that takes into account the change in geometry of the blunt-notched specimens. Results provided in this paper are quite encouraging.


    Author Information:

    Wainstein, J.
    Dpto. Mecánica, UNPatagonia SJB-CONICET, Comodoro Rivadavia,

    Perez Ipiña, J. E.
    GMF-LPM, UNComa-CONICET, Neuquén,

    Perez Ipiña, J. E.
    GMF-LPM, UNComa-CONICET, Neuquén,


    Stock #: JTE20160027

    ISSN:0090-3973

    DOI: 10.1520/JTE20160027

    Author
    Title Load-Separation Method, Spb, Used to Estimate Crack Extension for J-R Curves, Modified for Geometric Variations in Blunt-Notched Remaining Ligament
    Symposium ,
    Committee E08