Time of Flight Diffraction

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ToFD Services – Time of Flight Diffraction

HITS, the company came as a response to the growing demand for Advanced Non-Destructive Testing, NDT Services, MFL Testing, PMI Services, Phased Array Ultrasonic Testing, (ToFD Services) Time of Flight Diffraction, Guided Wave Long Range Ultrasonic Testing, and industrial inspection services worldwide.

HITS has worked hard to establish a new era of excellence and diversified inspection services in this field through its highly skilled and qualified team of engineers, supervisors, inspectors, and technicians, all committed to providing the highest quality of up-to-standard services.

The accumulated expertise of the team exceeds one decade in carrying out various NDT Services projects worldwide.

Our services will support our clients to run cost-effective operations and increase the lifetime of their assets in line with applicable standards.

We are passionate about our services including our special applications that furnish you with specific training, detailed work preparations, and valuable experience to augment our client business plans.

Advanced Non-Destructive Testing

Time of Flight Diffraction (ToFD Services) is an advanced method of Ultrasonic inspection that leverages existing UT methodologies thereby bringing a whole new range of testing and detection capabilities to the NDT forefront.

Whilst conventional ultrasonics uses shear/transverse waves as the primary mode of detection, TOFD uses longitudinal waves as the primary detection mode. Ultrasonic sensors are placed on each side of the weld.

One sensor transmits the ultrasonic beam into the material and the other sensor receives both reflected and diffracted ultrasound from anomalies and geometric reflectors.

During typical ToFD inspections, A-scans are collected and used to create B-scan (side view) images of the weld. Post acquisition analysis is done using software to measure the flaw length and through-wall height.

Primary Advantages Of Using ToFD

  1. Based on diffraction, so relatively indifferent to weld bevel angles and flaw orientation
  2. Uses time of arrival of signals received from crack tips for accurate defect positioning and sizing
  3. Precise sizing capability makes it an ideal flaw-monitoring method
  4. Quick to set up and perform an inspection, as a single beam offers a large area of coverage
  5. Rapid scanning with imaging and full data recording
  6. Can also be used for detecting irregularly shaped areas of metal loss during corrosion inspections
  7. Required equipment is more economical than a phased array, due to the conventional nature (single pulser and receiver) and use of conventional probes
  8. Highly sensitive to all weld flaw types
  • Phased Array Ultrasonic Testing
  • Long Range Ultrasonic Testing
  • Time of Flight Diffraction
  • Magnetic Flux Leakage
  • Remote Field Electromagnetic Test
  • Internal Rotary Inspection System
  • Positive Material Identification
  • In-Site Metallography
  • Thermography Inspection
  • Magnetic Based Eddy Current Test
  • Automated Corrosion Mapping

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