: relating to or being vibrations that are of the same kind as sound waves but have too high a frequency to be heard by the human ear ultrasonically -ˈsän-i-k(ə-)lē adverb Medical Definition ultrasonic adjective ul·tra·son·ic -ˈsän-ik 1 a : ha...
1.Sound whose wave frequency is too high (over 20,000 hertz) to be heard by humans. 2.The medical use of ultrasound waves, especially to produce images of the inside of the body or to observe a developing fetus. ultrasonic(ŭl′trə-sŏn′ĭk)adjective ...
超声波传播简介-英文( ultrasonic wave propagation review)TECHNICAL INDUSTRIES, INC Ultrasonic Wave Propagation Review Presented by:Sami El-Ali 1
1.The minimum fluidization velocity has a minimum value when the frequency of sound waves approached 150 Hz, whereas it decreased as the sound pressure level was increased at the samesound frequency.气泡尺寸和鼓泡频率随声压的增大而减小,随声波频率的增大先减小后增大。 4)supersonic[英][,su:p?'...
Ultrasonic high frequency guided waves (HFGW) has the potential to reduce and overcome these issues and can offer a good compromise between the volume coverage and defect sensitivity for testing of DMWs. This work presents defect detection in DMW joints made by 12 mm thickness P91 and alloy ...
Ultrasonic guided waves have been successfully applied in nondestructive evaluation (NDE) and structural health monitoring (SHM) of pressure vessels and pipelines due to their advantages, such as long detection range and high inspection efficiency. 超声导波是一种有潜力的无损检测方法,磁致伸缩换能器是...
Therefore, we used EWT to separate different components of ultrasonic waves used in the inspection of the debonding defect. Moreover, frequencies and arrival times of the components are key parameters to realize ultrasonic NDT. A method based on STFT is presented to evaluate the component frequency...
Nearly all forms of ultrasonic testing have the same few basic components. The transducer in an ultrasonic testing system is the origin point of the high frequency waves. It projects these waves through the material. The energy that is bounced back by geometric irregularities, such as discontinuiti...
Ultrasonic waves don't make a sound, but they can still activate Siri on your cellphone and have it make calls, take images or read the contents of a text to a stranger. All without the phone owner's knowledge.
frequency component, and a greater pulse shift to the low-frequency region. These considerations suggest that the speed of ultrasonic waves calculated on the basis of measurements of the delay time between the first and second pulses, as well as between the second and third pulses, will have a...