Graphed and tabulated results are analysed for trends. This modelling analysis is then compared to actual lab results for refracted angle determination.
Good correlation is seen.
Introduction Background Characterisation of soundfields generated by ultrasonic transducers is a pre-requisite to understanding observed signals in traditional ultrasonic testing and to provide the operator a method of determining if a probe has been constructed to the required specifications for a particular application. In fact, the methods described in E-1065 are primarily concerned with the measurement of beam characteristics in water and as such are limited to measurements of the compression mode only . Such setups allow the soundfield of the probe to be assessed for the entire volume infront of the probe. Measurements of beam shapes in solids, even for immersion probes, must rely on sound interactions with targets placed in the solid. These would include flat bottom or side drilled holes machined in metal blocks or steel balls or wires imbedded in plastics.