Tue, 19 August, 2025
Dr Channa Nageswaran is the TWI Technology Fellow for Advanced Ultrasonic Inspection, having originally joined us as an Engineering Doctorate student in 2003, researching inspection techniques for austenitic welds.
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. 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).
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. 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. He is currently exploring and developing technology to harness artificial intelligence for UT.
Like all of our Technology Fellows, Channa was selected for the position by the TWI Executive Team in recognition of his knowledge and experience. He has made a significant impact through his technical excellence, expertise and knowledge transfer as well as showing a commitment to developing and coaching colleagues, passing his knowledge on to the next generation of TWI experts.
You can find out more about Channa’s work on his dedicated webpage, here:
https://www.twi-global.com/who-we-are/technology-fellows/channa-nageswaran