Abstract
Scanning acoustic microscopy (SAM) is a modern, powerful technology for the visualization of the internal structure of materials of a different nature. It uses high frequency ultrasonic waves to get information from inside inhomogeneities and therefore is a sensitive, precise and safe method for materials characterization. It is successfully used in scientific and research practice but has the greatest potential as a technology for nondestructive quality evaluation. This chapter describes the methodology and different aspects of ultrasonic inspection performed on a variety of material samples using a scanning acoustic microscope working in the range of 10–400MHz as an example. The samples come from different areas of material sciences and were intentionally chosen as containing defects specific to each case.
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