Using instrumentation designed for the ultrasonic measurement of thickness, a technique has been devised for measuring the isotropic elastic constants of small samples, i. e., samples 1 mm in thickness and a minimum of 5 mm in other dimensions. Young's modulus, the shear modulus and Poisson's ratio are calculated from measurements of density and ultrasonic shear and longitudinal wave velocities. Samples of valve train materials, including chill cast iron, low alloy steel, tool steel, stainless steel, a nickel-base superalloy, and a powder metal alloy were machined from components and analyzed. The magnitude of the measured values of the elastic constants are reasonable when compared with published values. The measurement error on all the constants is estimated to be less than 1%.Moduli determined by this method can be used in finite element analyses to improve designs. When material properties are different near a surface, elastic constants characteristic of the surface layer can be measured. When the material properties are a function of the fabrication process, e. g., small castings or powder metal components, reliable elastic constants can be found. Metal stampings can be analyzed in a through-thickness direction. The elastic properties of non-metallic materials - ceramics, glasses and plastics - can also be measured.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An Ultrasonic Technique for Measuring the Elastic Constants of Small Samples


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1995



    Publication date :

    1995-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    An Ultrasonic Technique for Measuring the Elastic Constants of Small Samples

    Papadakis, E. P. / Stickels, C. A. / Innes, R. C. et al. | British Library Conference Proceedings | 1995


    An ultrasonic techniques for measuring the elastic constants of small samples

    Papadakis,E.P. / Stickels,C.A. / Innes,R.C. et al. | Automotive engineering | 1995


    Ultrasonic Measurement Of Elastic Constants Of Composites

    Bar-Cohen, Yoseph / Mal, Ajit K. | NTRS | 1994


    The Elastic Constants of Plywood

    Hearmon, R.F.S. | Emerald Group Publishing | 1942


    Elastic Foundation Constants for Sandwich Composites

    Kardomateas, George A. / Yuan, Zhangxian / Carlsson, Leif A. | AIAA | 2018