Basics 3 min read
GUIDED WAVE TESTING (GW) Overview
Guided wave ultrasonic testing detects corrosion damage and other defects over long 33 ft. – 165 ft. distances in piping.…
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Basics 2 min read
Remote Field Sensing
Eddy current testing for external defects in tubes where external access is not possible (e.g. buried pipelines), is conducted using…
Basics 6 min read
Pulsed Eddy Current Inspection
Conventional eddy current inspection techniques use sinusoidal alternating electrical current of a particular frequency to excite the probe. The pulsed…
Basics 2 min read
Swept Frequency
Swept Frequency Swept frequency eddy current techniques involve collecting eddy current data at a wide range of frequencies. This usually…
Basics 3 min read
Multiple Frequency Techniques
Multiple frequency eddy current techniques simply involve collecting data at several different frequencies and then comparing the data or mixing…
Basics 2 min read
Advanced Techniques – Scanning
Eddy current data can be collected using automated scanning systems to improve the quality of the measurements and to construct…
Basics 2 min read
Thickness Measurements of Non Conducting Coatings on Conductive Materials
The thickness of nonmetallic coatings on metal substrates can be determined simply from the effect of liftoff on impedance. This method has widespread use…
Basics 5 min read
Thickness Measurements of Thin Material
Eddy current techniques can be used to perform a number of dimensional measurements. The ability to make rapid measurements without…
Basics 3 min read
Verification of Heat Treatment
With some materials, such as solution heat treatable aluminumalloys, conductivity measurements are often made verifying that parts and materials have received…
Basics 3 min read
Conductivity Measurements
One of the uses of eddy current instruments is for the measurement of electrical conductivity. The value of the electrical…
Basics 2 min read
Tube Inspection
Eddy current inspection is often used to detect corrosion, erosion, cracking and other changes in tubing. Heat exchangers and steam…
Basics 6 min read
Surface Crack Detection Using Sliding Probes
Surface Crack Detection Using Sliding Probes Many commercial aircraft applications involve the use of multiple fasteners to connect the multi-layer…
