Method for using ultrasonic wave for quick determination of single crystal material

The present invention discloses a method for using ultrasonic wave for quick determination of a single crystal material, the ultrasonic wave passes through a sample to be tested, a bottom echo after the ultrasonic wave passes through the sample is collected, the waveform of the bottom echo is displayed by a display screen, and if a noise wave smaller than the bottom echo appears before the bottom echo in the displayed waveform, the sample to be tested is determined to be a non-monocrystalline material; otherwise the sample to be tested is determined to be a single crystal material. According to the method, the ultrasonic wave passes through the sample to be tested, by observing a reflected waveform of the ultrasonic wave, whether the material is a single crystal material can be determined, and the method can significantly improve the efficiency of product on-site testing, and is an economical applicable method for detecting. The method is simple, quick, economical, applicable, and high in detection efficiency