Since June 2015, a new standard for characterization and verification of multi-element ultrasonic testing equipment has come into force: the ISO 18563-1:2015 standard.
The measurement procedures specific to multi-elements are presented and detailed below:
- visual inspection of all housing components, along with systematic cleaning of the inside and outside of the housing when it is undergoing periodic inspection.
- measurements of rise time, pulse width and amplitude, to characterize transmitter quality and settings.
- measurement of the linearity of the time base of transmitters and receivers, to validate the accuracy of the delays applied by M2M to each ultrasonic shot on each channel, as well as to each receiver, and the resulting laws.
- bandwidth measurement, which guarantees the frequency range for which M2M devices are designed to work.
- amplitude channel comparison, which guarantees minimum response dispersion between each receiver.
- measurement of equivalent noise at the input, which guarantees a negligible level of electronic disturbance compared with disturbance due to the working environment.
- gain linearity measurements and vertical display guarantee accurate signal amplification levels.
As required by the standard, M2M performs these measurements on all transmitters and receivers. All these measurements form part of the Group 2 periodic tests required by standard 18563-1. On request, M2M also applies the AITM6-0016 Issue 4 table 7 methods 1 standard for aeronautics, for which the company also performs reverberation and time resolution measurements.
Learn more: www.m2m-ndt.com