| 摘要 |
PURPOSE:To markedly improve the resolving power of the output wave form of a receiver, by preliminarily calculating the output wave form of a transmitter so that the output wave form of a receiver is brought to a simple wave form with a small time width and performing measurement by using said wave form. CONSTITUTION:In ultrasonic measurement for performing various measurements by emitting an ultrasonic wave into a material 14 to be inspected from a probe 13 and detecting the reflected wave thereof by a receiver 16, a transmission wave form for bringing the output wave form of the receiver 16 to a simple wave form with a small time width is preliminarily calculated to be stored in a memory means 10. At the time of measurement, the memory content of a memory means 10 is read and an ultrasonic wave having a wave form corresponding to said content is emitted from the probe 13. By this method, for example, when the flaw of the material 14 to be inspected is investigated, even if a plurality of flaws 15 are present in close vicinity to each other, said flaws can be detected in a separated state. |
