Acoustic emission signals are propagating in the solid media contain characteristic information of acoustic emission sources. To use this information to reflect material characteristics or the development of defects, it is necessary to receive such acoustic emission signals on solid surfaces. Acoust

First, the piezoelectric equation.For the performance of piezoelectric materials, we have the following four considerations: 1. Piezoelectric materials are elastomers, which obey Hooke's law in terms of mechanical effects, that is, the elastic relationship between stress τ and strain e: τ = ce Or e

The development history and characteristics of ultrasoundAcoustics, as a branch of physics,it is a science that studies the occurrence, propagation, reception, and effects of sound waves. Before 1940, there were only single-crystal piezoelectric materials, which made ultrasonic wave not widely used.

1.Is the vibration detection circuit of the piezoelectric ceramic crystal simple? How to operate?The vibration detecting circuit of the piezoelectric ceramic crystal is very simple, so in the first question, the answer is yes. Its specific operation is to connect its two electrodes directly to the o

Piezoelectric ceramics element are a functional piezo ceramic material that can convert mechanical energy and electrical energy into each other.About piezoelectric effect,in addition to piezoelectricity, piezoelectric ceramics also have dielectric properties and elasticity, and have been widely used

PZT piezoelectric ceramics are polycrystals obtained by sintering lead dioxide, lead zirconate and lead titanate at a high temperature of 1200°C. It has a positive piezoelectric effect and a negative piezoelectric effect. PZT piezoelectric ceramics (lead zirconate titanate): where P is the abbreviat

Experiments on the high efficiency thinning and ultra-smooth polishing of alumina piezo ceramic substrates were carried out for processing methods, abrasives and processing parameters.The mechanism of influencing factor was further studied through process experiments, and the processing paramete

The comparison test between A120 ordinary grinding and ultrasonic grinding was carried out under the different vibration modes. The primary and secondary order of the influence of various grinding process parameters on the surface roughness of the workpiece was studied, and the workpiece rotation sp