Acoustic Emission
- Principle
- Selection method
- System connection method
- Application area
▶AE sensor principle
AE sensor detects the device, except for special cases, PZT has been used. Other materials include Niobate or Lithium Niobate. However, the sensitivity is quite low compared with PZT due to be used for special purposes, such as high-temperature environments. PZT piezoelectric material, such as the characteristics of force has caused the charge. AE waves propagated through the metal surface passed to the PZT inside AE sensor, Deformation of PZT is converted into electrical signals by.
▶ AE sensor structure & Features
AE sensors have high sensitivity in the resonant frequency of a particular type and Maintain constant sensitivity in a wide frequency range, broadband type.
Resonance model
It can be obtained highly sensitive by using mechanical resonance of detection. Typically, the resonant frequency between 60kHz ~ 1MHz, and low-resonance characteristics of the AE sensor, if necessary, the structure of piezoelectric acceleration sensor can be used.
Wide bandwidth model
Put on the cushioning device to detect and pushing the resonant structure.
R-CAST(R-CAST TYPE)
Due to head amplifier and preamp combination of dedicated, high sensitivity, small noise. Sensitivity (N / S ratio) compared with the existing products is higher than two times
