Permeability

Permeability Measurements Content Overview Table of Contents Permeability Measurements by Eddy Current Quantitative permeability measurements are not possible with Eddy Current Testing or Barkhausennoise Testing yet, but SURAGUS is applying both technologies to derive related parameters from layers with magnetic content. Thin films with magnetic material content such as Cobalt, Nickel or Iron are used […]

Sheet Resistance

Sheet Resistance Measurement Content Overview Table of Contents Sheet Resistance Measurements by Eddy Current Eddy current gauges are applied for sheet resistance testing since 30 years. Its accuracy and its ability to measure in contactless mode has a special user value. Key benefits of eddy current resistance testing are:   Non-contact mode Ultra-fast (20 ms / […]

Eddy Current

Quality Assurance using Eddy Current Testing The eddy current testing method utilizes local conductivity variations for the characterization of quality characteristics such as thickness, sheet resistance, material homogeneity or other physical changes in the sample of investigation. The complex eddy current signal contains various information about the test material, which can be separated in many […]

Penetration Depth Calculator

Penetration Depth Calculator This tool calculates the Standard Penetration Depth – the depth at which the eddy current density has decreased to 1/e of the surface density – according to the following equation for an eddy current sensor at an operating frequency f: where f = frequency, µ = permeability, σ = electrical conductivity, µr […]

Sheet resistance calculator

Sheet Resistance Calculator The SURAGUS layer calculator also known as rho tool is able to calculate various physical parameters of single layer systems and double layer systems. Calculable parameters are: Sheet resistance (also called sheet rho) Bulk resistivity Conductivity Layer thickness SURAGUS develops and manufactures non-contact measurement devices which are able to measure the sheet […]