| 摘要 |
PURPOSE:To provide a measuring apparatus for deterioration of a material which can non-destructively quantitatively evaluating the deterioration in a material surface layer by using ultrasonic wave. CONSTITUTION:The apparatus for measuring deterioration of a material comprises an ultrasonic oscillator 1 and a receiver 2 disposed in space at a material 3 to be measured. The oscillator 1 and the receiver 2 are connected with ultrasonic oscillating vibrator 6 via cables 4, 5. The vibrator 6 oscillates and receives the ultrasonic wave from the shearing horizontal wave (SH wave) of a transverse wave, and is connected to a computer 7 for analyzing the attenuation coefficient of the received wave. The wave of the shearing horizontal wave (SH wave) of the transverse wave has a frequency range of 0.5-100MHz and preferably 0.5-50MHz. Probes provided at the oscillator 1 and the receiver 2 preferably regulate its oscillating angle and a receiving angle corresponding to the type of the material 3 to be measured. |
