Advanced NDE

TechCorr’s Advanced Group offers more advanced inspection methods and technician skills than conventional NDT inspections, offering greater insight into asset condition and integrity. We utilize state-of-the-art equipment and technology to provide quick, precise, and detailed asset integrity data which can deliver a higher probability of flaw detection than with traditional inspection methods.

Some common uses of Advanced techniques include the inspection and detection of pipelines (with or without insulation), tanks, vessels, and towers for:

  • Corrosion
  • Cracking
  • Corrosion Under Insulation (CUI)
  • High-Temperature Hydrogen Attack (HTHA)
  • Weld Inspection



Alternating Current Field Measurement (ACFM) is an electromagnetic technique that identifies and sizes surface breaking cracks in welds and metallic components without the need to make contact with the material’s surface.




Automated corrosion mapping employs multiple ultrasonic techniques to:

  • perform a 100% surface scan of equipment
  • produce a detailed map of the corrosion experienced by equipment
  • size the length, width, depth, and orientation of defects.

The software used by TechCorr for automated corrosion mapping, RSTRENG®, provides fitness-for-service (FFS) assessments. The U.S. Department of Transportation accepts this as an evaluation technology.

This 3D scanner has been optimized to meet the needs of integrity engineers looking for the most effective and reliable way to acquire 3D measurements of physical objects.

The metrology-grade portable 3D scanner is part of the perfect NDT solution as it is fast, accurate, portable and easy-to-use. Whether for pipe inspection or aerospace MRO services, this NDT method makes it possible to obtain all the information necessary to maintain integrity.



TechCorr offers one of the largest AE tank testing systems available in the market able to examine some of the largest tanks within the industry. The use of acoustic emissions in combination with other technologies becomes a useful approach to tank compliance and integrity management.




TechCorr offers Full Matrix Capture (FMC): a specific data-acquisition process using ultrasonic array probes where each element in an array is successively used as the transmitter, while all elements are used as receivers for each transmitted pulse. The Total Focusing Method (TFM) is an ultrasonic array post-processing technique which is used to synthetically focus at every point of a region of interest. Both are advanced imaging techniques for ultrasonic testing which provide improved quality and resolution over conventional phased array produced imaging.


  • Optimal focusing and spatial resolution everywhere
  • Direct imaging of a large area for one probe position
  • All reachable angles with the array simultaneously
  • Defect characterization
  • Comprehensive imaging of defect
  • 3D imaging



Guided wave ultrasonic testing (GWUT), also known as long-range ultrasonic testing (LRUT), is a screening tool for rapidly testing long lengths of pipe from a single inspection point. GWUT provides 100% coverage of the pipe wall without having to remove insulation or coating. It quickly identifies areas of corrosion or erosion that may then undergo more detailed inspections using other NDT techniques, such as radiography or 3D structured light.



Phased array ultrasonic testing produces real-time sectorial scans (S-Scans) that provide a full volumetric examination from a single inspection point. Phased array equipment can detect defects regardless of their orientation to the transducer. Phased array ultrasonic testing can be used for:

  • inspection of welds
  • thickness measurements
  • corrosion inspection
  • crack detection.

TechCorr uses NDT methods that use the principal of “electromagnetism” as the basis for conducting examinations.One of the major advantages of eddy current as an NDT tool is the variety of inspections and measurements that can be performed. In the proper circumstances, eddy currents can be used for:

  • Crack detection
  • Material thickness measurements
  • Coating thickness measurements
  • Conductivity measurements
  • Material identification
  • Heat damage detection
  • Case depth determination
  • Heat treatment monitoring

Advantages of eddy current inspection include:

  • Coating removal not required
  • Sensitive to small cracks and other defects
  • Detects surface and near-surface defects
  • The inspection gives immediate results
  • Equipment is very portable
  • The method can be used for much more than flaw detection
  • Minimum part preparation is required
  • Test probe does not need to contact the part
  • Inspects complex shapes and sizes of conductive materials



Time of flight diffraction (TOFD) is an ultrasonic screening tool that can rapidly scan welds and produce very accurate measurements of any defects found.

TOFD operates using a pitch and catch technique with two probes on either side of a weld. One probe transmits a series of ultrasonic pulses and another receives them. If a crack or other defect is present in the weld, the ultrasonic waves will diffract and the time of flight between transmitter and receiver will be affected. Based on the change in time of flight, weld defects can be located and sized.