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    Volume 49, Issue 1 (January 2021)

    Characterization of Mechanical Properties of 3-D–Printed Materials Using the Asymmetric Four-Point Bending Test and Virtual Fields Method

    (Received 22 August 2018; accepted 26 February 2019)

    Published Online: 2021

    CODEN: JTEVAB

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    Abstract

    The virtual fields method (VFM) is an inverse method for characterizing the mechanical properties of materials that has the advantage that all constitutive parameters can be identified using one test. The accuracy of identification is mainly determined by the load configuration, deformation measurement, and virtual displacement fields. In order to promote the use of VFM, a new load configuration for the asymmetric four-point bending (4PB) test is proposed here. A virtual experiment was performed to examine the feasibility of the asymmetric 4PB test, where the configuration of the proposed test was optimized to achieve high identification accuracy. As an example of a practical application, the proposed method combined with moiré interferometry was used to characterize the constitutive parameters of stainless-steel materials fabricated by selective laser-melting 3-D printing. It was demonstrated that this method is suitable for characterizing the material properties of 3-D–printed materials.

    Author Information:

    Zhou, M. M.
    Key Laboratory of Applied Mechanics, Department of Engineering Mechanics, Tsinghua University, Haidan, Beijing

    He, W.
    Key Laboratory of Applied Mechanics, Department of Engineering Mechanics, Tsinghua University, Haidan, Beijing

    Xie, H. M.
    Key Laboratory of Applied Mechanics, Department of Engineering Mechanics, Tsinghua University, Haidan, Beijing

    Liu, S.
    Institute of Technological Sciences, Wuhan University, Wuhan,

    Key Lab of Transients in Hydraulic Machinery of Ministry of Education, School of Power and Mechanical Engineering, Wuhan University, Wuhan,


    Stock #: JTE20180598

    ISSN:0090-3973

    DOI: 10.1520/JTE20180598

    Author
    Title Characterization of Mechanical Properties of 3-D–Printed Materials Using the Asymmetric Four-Point Bending Test and Virtual Fields Method
    Symposium ,
    Committee A01