Practical guidance for selecting instruments, understanding measurement methods, and improving inspection workflows.
The storage and statistics of a coating thickness gauge turn scattered readings into usable quality data: the average supports acceptance, the extreme values flag risk points, the standard…
Non-destructive testing (NDT) includes ultrasonic, radiographic, magnetic particle, penetrant, eddy current, visual and other methods; thickness measurement is a branch of the ultrasonic and eddy current methods, and…
In coating failure investigation, thickness measurement is used to judge insufficient film thickness (leading to early failure) or over-thickness (leading to cracking and loss of adhesion), and to…
Measurement uncertainty is a quantitative expression of the confidence interval of a measurement result; it is synthesised from several components (instrument, reference foil, environment, operation, etc.) and multiplied…
Although galvanising, anodic coating and conformal coating are all thin layers, their substrate and coating natures differ: galvanising (steel substrate + non-magnetic coating) uses magnetic, anodic coating (aluminium…
A Chinese manufacturer entering the US coating-thickness market must complete four conversions: shift standard references from GB/T to ASTM/SSPC, upgrade the calibration certificate to a traceable Long Form,…
Coating quality control is a data chain: before application, set surface preparation and material parameters; during application, monitor wet film thickness and environmental conditions; after application, measure dry…
There are eight mainstream routes to coating thickness measurement: magnetic, eddy current, ultrasonic, magnetic pull-off, micrometer, coulometric, X-ray fluorescence and photothermal. Of these, magnetic, eddy current and ultrasonic…
1 mil = 25.4 μm. International standards use SI units (μm, mm) as the basis, with imperial units in parentheses only as reference; but US engineering practice uses…
