Archives of Acoustics Quarterly, Volume 15Polish Scientific Publishers., 1990 - Sound |
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Page 79
... measurements is equal to 4t / t = 10-5 ( 0.001 % ) for average measured transition times t≈ 100 μs , what corresponds to a 60 cm distance in steel for longitudinal waves . 3.2 . Ultrasonic refractometer The velocity of ultrasonic waves ...
... measurements is equal to 4t / t = 10-5 ( 0.001 % ) for average measured transition times t≈ 100 μs , what corresponds to a 60 cm distance in steel for longitudinal waves . 3.2 . Ultrasonic refractometer The velocity of ultrasonic waves ...
Page 80
... measurements of residual stresses 4.1 . Stress measurements in bolts Stress increment , 48 , in a bolt can be determined from measurements of changes of travel times of ultrasonic waves along the axis of the bolt . If the travel time is ...
... measurements of residual stresses 4.1 . Stress measurements in bolts Stress increment , 48 , in a bolt can be determined from measurements of changes of travel times of ultrasonic waves along the axis of the bolt . If the travel time is ...
Page 312
... measurements presented in this paper were obtained with the use of a modified measurement procedure . In this procedure , the measurement of the maximum burst amplitude as a function of compressive load was taken in 10s time intervals ...
... measurements presented in this paper were obtained with the use of a modified measurement procedure . In this procedure , the measurement of the maximum burst amplitude as a function of compressive load was taken in 10s time intervals ...
Contents
Filipczyński Outline of the Polish Acousticians History | 3 |
J Bednarek T Gudra K RudnoRudziński Electroacoustic | 15 |
W Bochenek A Chorzempa J W P Hazell A J Kukwa | 31 |
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accent acoustic activity acoustic emission acoustic impedance acoustic wave AE count AE maximum burst AE signals AE transducer amino acids amplitude analysis analytic continuation applied calculated changes coefficient components compressibility constant crack length crystals cycles denotes density dependence detection determined dielectric diffraction dislocation distribution elastic electric electric impedance electric resonance equation estimation expansion series type Experiment experimentally sampled points filter fluctuation range formula function hydration numbers impedance increase input interdigital transducer investigations k₁ listeners load longitudinal waves matching layers maximum burst amplitude measurements mechanical method noise obtained output parameters Phys piezoelectric plastic deformation polarization Polish Academy presented probe pseudorandom pulse recognition reflected resonance series type expression solution sound specimen SPRF stress surface waves syllable t/Tm Table theoretical transverse waves ultrasonic waves velocity vibration voltage Warszawa waves propagating Wrocław zero