A type of interference optical fiber acoustic emission sensor is described.With 10^-10 m level resolution,megahertz-level frequency and response time less than
Si0.8Ge0.2strained epilayer were grown on Si substrates by rapid thermal process/very low pressure-chemical vapor deposition(RTP/VLP-CVD)and implanted with boro
Based on optical fiber technology,the main electric circuit of the remote I/O unit controller is studied.And the application of the system is illustrated.
The force sensing resistor(FSR) and its construction and characteristic are described.By using the optimal electronic interface,the end result which is a direct
The intensity and phase formulas that are valid for the saturation and inter-mediate regime(before saturation)are derived,and the analytical expressions with th
In this paper,a new direct optical triangulation(DOT)for measuring the out-of plane displacement is given.In order to state its principle,DOT is used to mea-sur
Speckle interferometry is an efficient method to analyze a vibration.In cetrain conditions,this technique has some outsanding advantage,and need not strict shoc