Abstract
A systematic study of the variation of elastic moduli and Poisson's ratio of sintered iron compacts of porosity (up to 21.6%) has been carried out by measuring longitudinal and shear ultrasonic velocities. The variation of these parameters with porosity is compared with predictions of elasticity and scattering theories. Further, a linear relationship was observed between the elastic moduli and the ultrasonic velocities and the use of ultrasonic velocity as a predictor of elastic moduli is therefore recommended for porous materials.
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Panakkal, J.P., Willems, H. & Arnold, W. Nondestructive evaluation of elastic parameters of sintered iron powder compacts. J Mater Sci 25, 1397–1402 (1990). https://doi.org/10.1007/BF00585456
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DOI: https://doi.org/10.1007/BF00585456