A review of the techniques using ultrasonic waves for the measurement of stress within materialsdoi:10.1016/0041-624X(70)90764-XUltrasonics
Today, ultrasonic(超声的) waves are being put to work in laboratories and factories. If an ultrasound generator is placed in a liquid, the waves move the liquid back and forth hundreds of thousands of times each second. This causes materials to mix quickly or to dissolve(使分解,使溶解) in...
When operated at the resonance condition, a device consisting of a large number of layers produces ultrasonic waves that are highly directional in space. A structure excited by a single short pulse from a Nd:YAG laser generates a train of acoustic square waves, the pulsewidth of each being ...
PURPOSE:To prevent a ligneous board from burning, by a method wherein a ultrasonic vibration is given to the ligneous board from the opposite side of the same by abutting fitting parts against the same. CONSTITUTION:Fitting parts 4 are mounted on a holding jig 7 by turning a protrusion 3...
The rig uses a 60W ultrasonic transducer, operating at approximately 40 KHz, to generate a standing wave in combination with a reflector – essentially a rigid piece of material off which sound waves can be bounced. The interaction between the sound waves as they are emitted from the transducer...
Non-destructive ultrasonic wave analysis has proven to be a successful investigation method for inspecting mechanical properties of materials. This review has highlighted the main results of research in the field of non-linear ultrasonic wave investigations for the inspection of fatigue damage, thermal ...
Continuous monitoring of the central blood pressure waveform from deeply embedded vessels such as the carotid artery and jugular vein has clinical value for the prediction of all-cause cardiovascular mortality. However, existing non-invasive approaches,
It is widely accepted by the scientific community that bioelectrical signals, which can be used for the identification of neurophysiological biomarkers indicative of a diseased or pathological state, could direct patient treatment towards more effective
Immunofluorescence staining was performed as described previously to analyze number of vessels19. Histological sections of the heart were incubated with monoclonal rat anti-CD31 (Dianova, Hamburg, Germany) or rabbit polyclonal anti-alpha smooth muscle actin antibodies (Abcam,Cambridge, UK) over night at...
Both allow the transmission of shear waves that interact with the tissue before being received. Experimental tests are performed using tissue mimicking phantoms and cervical tissues. One contribution is a sensor sensitivity study that has been conducted to evaluate the robustness of the new proposed ...