Non-destructive Testing: Important Terminology
There are many different non-destructive testing techniques recognized by the American Society for Non-destructive Testing (ASNT) including Acoustic Emission Testing (AE), Electromagnetic Testing (ET), Ground Penetrating Radar (GPR), Laser Testing…
Magnetic Particle Inspection
What is Magnetic Particle Inspection? Magnetic particle inspection (often abbreviated MT or MPI) is a nondestructive inspection method that provides detection of linear flaws located at or near the surface…
Ultraviolet and Thermal Stability of Penetrant Indications
Exposure to intense ultraviolet light and elevated temperatures can have a negative effect on fluorescent penetrant indications. Fluorescent materials can lose their brightness after a period of exposure to high…
Color and Fluorescent Brightness
Penetrant Color and Fluorescence The color of the penetrant material is of obvious importance in a visible dye penetrant inspection, as the dye must provide good contrast against the developer…
Viscosity
Viscosity describes a fluid's resistance to flow. Liquids such as water that flow easily, have a lower viscosity than do liquids such as ketchup. Viscosity has little effect on the…
Density or Specific Gravity
The density or specific gravity of a penetrant material has a slight to negligible effect on the performance of a penetrant. The gravitational force acting on the penetrant liquid can…
Surface Energy (Surface Wetting Capability)
As previously mentioned, one of the important characteristics of a liquid penetrant material is its ability to freely wet the surface of the object being inspected. At the liquid-solid surface…
>EQUIPMENT AND MATERIALS:
This procedure is intended for use with the following consumables or their equivalent. It has to be ensured that the consumables are selected in such a way that they are…
Dye Penetrant Inspection Procedure
This article provides you with a example dye penetrant inspection procedure. This procedure contains water washable process with both visible and fluorescent systems. SCOPE This procedure establishes the general requirements…
Step by Step Dye Penetrant Testing
The article addresses a step by step dye penetrant testing process. There are two techniques for dye penetrant test as follow: Color contrast or visible dye penetrant testingFluorescent dye…
