The NDT Validation Centre exists to provide independent assessment and
verification of both established and new non-destructive testing and
inspection techniques. The development of new technology and procedures
is part of the service available from TWI Technology Centre (Wales).
If a current NDT inspection procedure is to be "validated," we review the
current techniques, including a review of the technical justification (TJ).
The purpose of reviewing the TJ is to assess whether the original TJ was
clearly written, whether it is technically correct and whether it contains all
the required information (appropriate to the validation level) to justify the
capability of the inspection procedure. This validation procedure can
recognize all aspects of the NDT process, involving the improved TJ,
reporting and approval techniques and then re-reviewing the new
procedure. Within this study, the requirements of staff will also be taken
on board, creating a new and improved NDT inspection procedure.
A validation process that includes practical trials will usually require the
design and manufacture of specific test pieces for open trials (relating to
procedures) and/or blind trials (relating to personnel). Following the
completion of these trials, the inspection results are evaluated against the
as-made data for the test pieces/flaws (calibration samples) and the pass/fail
criteria where applicable.
The NDT Validation Centre is relevant to all aspects of the NDT working environment, from techniques and equipment to procedures and personnel. Using our full spectrum of specialists from both academic and industrial practitioners, we can use our multidisciplinary approach to develop solutions to your inspection problems.
We house a wide variety of state-of-the-art equipment at The NDT Validation Centre and are well placed to provide expertise in advanced inspection techniques, including:
- Digital radiography
- Laser shearography
- Eddy current array inspection
- Time of flight diffraction
- Phased array ultrasonics
- Immersion ultrasonics
- Long range guided wave ultrasonics
We upgrade our equipment all the time, including software enhancements on the equipment and personnel knowledge, to ensure that we are always at the leading edge of the technology.
We also have experience in NDT modelling techniques allowing theoretical scans etc. to be developed before putting the theory into practice, thus permitting our technicians and customers to validate the correct procedures, helping to reduce set-up time and cost.
The techniques available permit the inspection of all engineering and construction materials (metals, composites, plastics and ceramics), and are acceptable to the majority of governing bodies from a vast selection of industrial sectors, including aerospace and transport, oil, gas and chemicals, construction, medical devices and micro technology.