Requirements for the sample surface
The test surface should have metallic luster, no scale and other dirt, and the surface roughness should meet the following requirements:
Specimen Weight Requirements
Specimens need to be of sufficient mass and stiffness to ensure no displacement or rebound during reconstruction. The quality should meet the following requirements:
Specimen Thickness Requirements
The sample should have sufficient thickness, and the minimum thickness should meet the following requirements:
The sample has a surface hardened layer, and the depth of the hardened layer should meet the following requirements:
For concave, convex, cylindrical and spherical specimens, the surface radius of curvature shall meet the following requirements:
Samples should not be magnetic.
The distance between each measurement point should be greater than 3-4mm, and the test cannot be repeated at the same point, otherwise a large error will be caused. At the same time, the service life of the sensor is shortened.
