Ashok Kumar

Abstract: Ultrasonic metrology includes measurement of acoustic parameters and propagation parameters such as velocity and attenuation. It also covers such parameters which are essentially not the acoustic parameters but their principle of measurement depends on ultrasonics. Present day technology keeps on increasing the range and the accuracy of measurement. It also results into introduction of new techniques and new parameters. Ultrasonic metrology keeps on facing new scientific and technological challenges. Present talk will show these challenges and also the recent achievements in this area. Measurement of high intensity focused ultrasonic waves, covering the broad spectrum of frequency with superharmonics shall be included in the talk. 1