Abstract
The fracture toughness of structural materials are largely influenced by small flaws near the surface such as cracks, pores and inclusions. They had not been extensively investigated so far, because the observation technique has not been established. In this work, we describe two types of new applications of scanning acoustic microscope to the study of fracture and wear. First, detailed features of subsurface cracks in silicon nitride were observed and a new method to estimate the fracture toughness is proposed. It is also proposed that the measurement of attenuation of the leaky surface acoustic wave (leaky SAW) can be used to characterize the surface of steels with various heat treatment.
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© 1982 Plenum Press, New York
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Yamanaka, K., Enomoto, Y., Tsuya, Y. (1982). Application of Scanning Acoustic Microscope to the Study of Fracture and Wear. In: Ash, E.A., Hill, C.R. (eds) Acoustical Imaging. Acoustical Imaging, vol 12. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-9780-9_8
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DOI: https://doi.org/10.1007/978-1-4613-9780-9_8
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-9782-3
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