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The Calo tester, also known as a ball crater or coating thickness tester, is a simple and inexpensive piece of equipment used to measure the thickness of coatings.Coatings with thicknesses typically between 0.1 and 50 micrometres, such as physical vapor deposition (PVD) coatings or chemical vapor deposition (CVD) coatings, are used in many industries to improve the surface properties of tools ...
The ability to gauge thickness measurement without requiring access to both sides of the test piece, offers this technology a multitude of possible applications. Paint thickness gauges, ultrasonic coating thickness gauges, digital thickness gauges and many more options are available to test plastics, glass, ceramics, metal and other materials.
In other cases the coating adds a completely new property, such as a magnetic response or electrical conductivity (as in semiconductor device fabrication, where the substrate is a wafer), and forms an essential part of the finished product. [4] [5] A major consideration for most coating processes is controlling coating thickness.
Am-241: Backscatter gauges, smoke detectors, fill height and ash content detectors. Sr-90: Thickness gauging for thick materials up to 3 mm. Kr-85: Thickness gauging for thin materials like paper, plastics, etc. Cs-137: Density and fill height level switches. Ra-226: Ash content; Cf-255: Ash content; Ir-192: Industrial radiography
Online non-intrusive ultrasonic thickness sensors are a popular choice for corrosion monitoring in various industries, including oil and gas, chemical processing, and power generation. These sensors can provide accurate and reliable thickness measurements of metal structures without requiring physical access or disruption to the equipment.
D6988 – Standard Guide for Determination of Thickness of Plastic Film Test Specimens D8136 - Standard Test Method for Determining Plastic Film Thickness and Thickness Variability Using a Non-Contact Capacitance Thickness Gauge E1870 – Standard Test Method for Odor and Taste Transfer from Polymeric Packaging Film
Alternating current field measurement (ACFM) is an electromagnetic technique for non-destructive testing detection and sizing of surface breaking discontinuities. It was derived from the methods used in eddy-current testing and works on all metals, ferrous or non-ferrous.
Viscosity is a measure of a fluid's rate-dependent resistance to a change in shape or to movement of its neighboring portions relative to one another. [1] For liquids, it corresponds to the informal concept of thickness; for example, syrup has a higher viscosity than water. [2]