Adonyi Welding Consultants

Yoni Adonyi Ph.D., P.E.

Adonyi Welding Engineering Consultants has been registered in the State of Texas since 1997. Professor Yoni Adonyi is the Principal Investigator and a registered Professional Engineer in Texas. He has been consulting and expert witnessing in structural failures for over 20 years, providing metallurgical analyses for welding and joining quality improvements, as well as product development. He has also provided short instructional courses in welding both in the United States and abroad for companies such as Square D, Thermatool Corp, US Steel, Trinity Industries, AKT Materials, LeTourneau Technologies, Caterpillar R&D, and others. Prof. Adonyi recently became a Fellow of the American Welding Society, Class of 2015. Dr. Adonyi’s creative and diverse experience is also reflected by the three patents he coauthored (Patent 1, Patent 2, Patent 3) ranging from steel processing to microwave joining to GMAW welding process monitoring.

Dr. Adonyi has become Emeritus Professor at LeTourneau University in 2017 and was recently awarded as an Honorary Professor at the Budapest University of Technology and Economics, Material Science Department where he leads a new R&D group called Cohaesio. He remains available to perform consulting in the USA, Europe and the rest of the world.

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Industrial Consulting


Familiar with most well-known, as well as new, welding processes gives an edge on easy diagnostics of welding problems and quick corrective actions. Still, Dr. Adonyi has found that design and inspection changes are always needed to correct root causes, hence close cooperation with Purchasing, Design, and Q&A are necessary to implement positive changes resulting from these analyses.

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Short-Course Training


Dr. Adonyi is Able to teach equally well at several levels of expertise, from the manufacturing floor to design offices and R&D labs resulted in good knowledge retention. While most of his publications focus on hydrogen induced cracking of high strength steels, he has successfully taught courses on Aluminum, Titanium and Stainless steel welding.

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Expert Witness        


Dr. Adonyi specializes in objective and competent technical assessment of the problem from both sides and advising on the merit of each argument. Having a Texas PE license since 1997 allows him to be a credible and acceptable expert in State courts. He has a history of easily explaining complex information to a non-technical audience.

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