Dr Nageswaran joined TWI as an Engineering Doctorate student in 2003, during which time he researched inspection techniques for austenitic welds. Channa is now TWI’s Technology Fellow for Advanced Ultrasonic Inspection, having become globally recognised as a leading authority in advanced ultrasonic testing (UT) techniques.
Channa’s influence spans both industry and academia, with work that has shaped international standards. His technical excellence saw him elected as the International Institute of Welding (IIW)’s Chairman of the Sub-commission for Ultrasonic Testing, following his contribution to the development of full matrix capture (FMC) based ultrasonic imaging standards.
He is also a Fellow of the Institution of Mechanical Engineers, where he was recognised for his contribution in authoring the Health and Safety Executive (HSE) publication on the safety of UK assets at risk of damage by high temperature hydrogen attack (HTHA).

At TWI, Channa has supported the TWI Core Research Programme (CRP) as a Programme Manager and continues to advance research as a Level 3 in phased array ultrasonic testing (PAUT).
Channa's technical expertise spans the development of austenitic cladding and weld inspection techniques, the detection of HTHA, high temperature ultrasonic testing and the application of FMC to identify stress corrosion cracking. Channa is currently exploring and developing technology to harness artificial intelligence for UT.