从169名论文第一作者分布看,高校是主动或被动上当受骗的“重灾区”。 www.bjzhika.com 9. Inputtransducers,orsensorsareclassifiedas eitheractiveorpassive. 输入传感器分为主动传感器和被动传感器。 spaces.msn.com 10. Wouldyou expectgirlstobeactiveorpassive? 女孩子主动还是被动呢? www.kekenet.com 1 2...
It is then possible to estimate the damage area in a plate from the amplitude of the noise source after a calibration of the sensors of a reference plate. 展开 关键词: Carbon Composites Epoxies Networks Transducers Sensors Acoustic emission Calibration ...
(active noise and vibration control) Ship structures Electro-rheological fluids Mr(magnetorheological fluids) Displacement transducers Velocity transducers Loudspeakers Electromagnetic actuators Active vibration isolation Hybrid active-passive control methods Active noise control Active vibration control Sensors Ship ...
Passive detectionPWASSHMThis chapter introduces the piezoelectric wafer active sensors (PWAS), which are inexpensive low-profile transducers that operate on the piezoelectric principle. PWAS transducers couple the electrical and mechanical effects through the piezoelectric constitutive equations. The chapter ...
Signal detection based on the field-effect mechanism, therefore, allows to prevent the signal distortion and gain loss observed for small passive sensors in the infra-slow frequency band. This advantage is expected to be valid for all FET-based sensor technologies with stable transfer characteristics...
passive intermediate matching layer pulse-echo mode pitch-catch mode narrow band excitation frequency 0.35 MHz/ B7230 Sensing devices and transducers B2860A Piezoelectric devices B0560 Polymers and plastics (engineering materials science) B0550 Composite materials (engineering materials science) B2810F ...
展开 关键词: acousto-optical devices optical sensors ultrasonic imaging ultrasonic transducers active optical detector bandwidth high frequency ultrasound imaging neodymium-doped glass waveguide laser noncontact inspection optical demodulation 会议名称: Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE 会议...
A frequency-domain formulation is used to analyze the stability and performance of an active vibration isolation system which uses feedback control. The active mount is modelled as a single-axis force actuator in parallel with a passive spring and damper. The feedback sensor measures either the ...
process and installation for controlling the described active vibration of a vibrating body (1) mounted on a support body (3) and vice versa via a mounting body which comprises an intermediate body (5).in this process, through the body from the vibrating body and the passive significantly supp...
The textiles, with PZT-based ultrasonic transducers, a stretchable metal interconnector array, and a fabric matrix, demonstrate antifouling performance against bacteria (e.g., Escherichia coli (E. coli)) and viruses (e.g., SARS-CoV-2), even in droplets and high concentrations of bacterial and...