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Phased Array Ultrasonic Technique

Like other electronically enhanced methods of inspection such as TOFD and Digital Radiography, Phase Array has been around for several decades and has improved as advancements in base technology have been made.

These improvements relate to advancements in composite transducer technology and electronic data capture, manipulation and presentation.

But, despite these advances, Phased Array still suffers from the fundamental limitations of the physics involved with conventional 'pulse echo' ultrasonic testing.

By definition, these are based upon the measurement of the ratio of reflected energy and this ratio can be affected by many factors other than the actual size, nature and orientation of a potentially critical defect.

These limitations are further compounded by the fact that this 'new technology' is made all the more convincing through image processing and by the absolute certainty that integrity critical defects are not often favourably oriented planar reflectors.

The positives are that the technology provides a comprehensive level of coverage in an efficient fashion and displays and records what has been detected in an electronic format.

As such, it is an effective screening or detection tool which, used in combination with supplementary techniques constitutes an effective aid to achieving more efficient and reliable inspection.

We have a number of personnel trained and qualified in the use of Phased Array and would be pleased to discuss your applicational needs.

For more information about phased array, contact Colin Mortimer