Volume 42, Issue 3 (May 2014)

    The Deformation Measurement and Analysis on Meso-Structure of Aluminum Foams During SHPB Test

    (Received 23 August 2012; accepted 2 October 2013)

    Published Online: 2014

    CODEN: JTEOAD

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    Abstract

    The split Hopkinson pressure bar (SHPB) is most widely used to measure the dynamic mechanical properties of materials. Such a testing methodology implies the assumption of uniform deformation during an impact test. However, the experimental verification of this assumption for aluminum foams has, as yet, been unreported. In this paper, a test system combining the SHPB with a high-speed digital camera was designed and constructed to study the problem. In the system, the synchronization between SHPB and the high-speed digital camera, the lighting, and the surface treatment of specimen are established. The deformation of meso-structure of aluminum foams during the SHPB impact was observed successfully; furthermore, the localized strains along the specimens were measured quantitatively. Experimental results show that the deformation is non-uniform; that means the assumption of uniform deformation for aluminum foam is not well satisfied. Therefore, a need exists for some modifications to characterize the dynamic mechanical properties of aluminum foams by SHPB.


    Author Information:

    Yang, Bao
    School of Civil Engineering and Transportation, State Key Laboratory of Subtropical Building Science, South China Univ. of Technology, Guangzhou,

    Tang, Liqun
    School of Civil Engineering and Transportation, State Key Laboratory of Subtropical Building Science, South China Univ. of Technology, Guangzhou,

    Liu, Yiping
    School of Civil Engineering and Transportation, State Key Laboratory of Subtropical Building Science, South China Univ. of Technology, Guangzhou,

    Liu, Zejia
    School of Civil Engineering and Transportation, State Key Laboratory of Subtropical Building Science, South China Univ. of Technology, Guangzhou,

    Jiang, Zhenyu
    School of Civil Engineering and Transportation, State Key Laboratory of Subtropical Building Science, South China Univ. of Technology, Guangzhou,

    Fang, Daining
    School of Civil Engineering and Transportation, State Key Laboratory of Subtropical Building Science, South China Univ. of Technology, Guangzhou,


    Stock #: JTE20120254

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120254

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    Author
    Title The Deformation Measurement and Analysis on Meso-Structure of Aluminum Foams During SHPB Test
    Symposium , 0000-00-00
    Committee E28