@article{MAKHILLJEAS201611413637,
    title = {The Digital Ultrasonic Interferometer For Quality Inspection of Piezoelectric Crystals},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {11},
    number = {4},
    pages = {695-697},
    year = {2016},
    issn = {1816-949x},
    doi = {jeasci.2016.695.697},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2016.695.697},
    author = {Nizamitdin and},
    keywords = {Velocity,absorption,amplitude,frequency,,Q-factor,duration},
    abstract = {Researcher refers to hypersonic measurement technique. A digital hypersonic method for quality inspection of piezoelectric crystals. The method is grounded on automatic metering of a time interval between echo pulses and Supersonic Wave Attenuation (SWA) in an inspected article with information output in a digital form. The hardware and functional features of hypersonic system is presented. The method can be used in factory and scientific laboratories to obtain express-information on quality of ingoing materials for fabricated items.}
    }