Impact Testing of Flexible Polyurethane Foams

    Volume 16, Issue 3 (May 1988)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 7


    Shestopal, VO
    Senior Engineer, National Materials Handling BureauDINNA Mathematical Modelling, Wollstonecraft, NSW

    Chilcott, B
    Senior Engineer, National Materials Handling BureauDINNA Mathematical Modelling, Wollstonecraft, NSW

    (Received 17 February 1987; accepted 22 October 1987)

    Abstract

    Methods of obtaining information on dynamic properties of flexible foams from a limited number of impact tests are considered. The test procedure is based on measuring acceleration and displacement during the entire impact (not only maximum values as required in current standards). Interpretation of the results uses two theoretical approaches: stress-strain relationships and similarity considerations. Each approach has its own advantages. The developed algorithm, applied presently to four commercial packaging foams, allows the plotting of cushioning diagrams and predicts the shape of time-impact dependence for an arbitrary drop height and foam thickness. Properties of composite cushioning structures can be calculated.


    Paper ID: JTE10384J

    DOI: 10.1520/JTE10384J

    ASTM International is a member of CrossRef.

    Author
    Title Impact Testing of Flexible Polyurethane Foams
    Symposium , 0000-00-00
    Committee D08