The two tools began under the same roof (Imperial College and TWI, both in the UK) and went on to be two distinctive but very similar tool technologies. They both use torsional transducers to create bulk guided waves and they can both be retooled to shoot longitudinally propagated wave modes. Their software is where they differ the most and the fact that the G4 has a two ring torsional configuration while the Mach 4 has a 3 ring longitudinal with 2 ring torsional multimode configuration and now a strictly 5 ring torsional optional configuration.
GISS (USA) has 2 of the worlds 6 CSWIP Level 3 GWT certified technicians (Note, the remaining 4 CSWIP Level 3’s work for the tool manufacturer), in addition multiple CSWIP Level 1 and 2 Teletest specific and GUL Wavemaker Level 1, 2XB certified technicians.
Yes the Senior Management Team of GISS (USA) have level 3 certifications in the following NDT Certifying bodies; ASNT, CGSB (NRCan), CSWIP, PCN, PCN-PED and SNT.
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