EMAT techniques permit the detection of weld defects with great sensitivity using both Shear Vertical and Shear Horizontal sensors. UT and PAUT permit detection and sizing of defects.
特点
EMAT
- 非接触式EMAT技术。
- Permits fast screening without couplant of welds of any thickness.
- 可在-30ºC至350ºC的温度下工作。
- Shear waves with horizontal polarization (SH) permit inspection of austenitic materials without mode conversion.
- Shear waves with vertical polarization (SV) permit inspection of ferromagnetic materials with similar detection capabilities as piezoelectric UT (no sizing available).
- 辊子套件、编码器和适配器，适用于不同的应用。
PAUT
- Superior focusing and steering capabilities.
- 内部和外部的缺陷都能被检测出来，并确定其大小。
- Permits covering large areas with array transducers.
- Inspection available from either side of the weld or across the weld in transmission.
