- Ultrasonic TOFD for condition monitoring and weld testing
- Ultrasonic Phased Array - PAUT
- Ultrasonic Pulse-Echo Technique
- Another common NDT methods include:
- Magnetic Particle Testing (MT)
- Liquid Penetrant Testing (PT)
- Boroscope and Video Boroscope Testing
- Positive Material Identification Testing (PMI)
- Vacuum Box Testing (VaT)
- Handness Test (HaT)
Ultrasonic TOFD Technique (TOFD)
MJ started utilization of TOFD technique through training provided by AEA of UK in 1994. This technique is used to replace the conventional Radiographic Inspection.
MJ introduced this technique into Saudi Arabia, Algeria, Libya, Iran, Qatar, Thailand China and Singapore. Our Level 3 also performed Technical Audit to the inspections done by the local inspection companies in Japan, Korea, China, Italy, India and Brazil.
MJ has designed specific software for plotting beam spread to indicate beam coverage before each inspection can be performed. This software is available for sale.
Ultrasonic Phased Array - PAUT (PAUT)
Ultrasonic Phased Array uses a multiple element probe whereby the output pulse from each element is time delayed in such a way so as to produce constructive interference at a specific angle and a specific depth. These time delays can be incremented over a range of angles to sweep the beam over the desired angular range.
This NDT technology is also referred as Sweep Beam. The main advantages of phased array inspection in NDT are as follows:
- Ability to sweep a range of angles.
- Ability to display image in real time for sweep angles.
- Ability to focus the beam.
- Ability to provide more precise defect dimensions.