J. L. Fihey

Papers

Total Citations

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About

J. L. Fihey is a materials and welding engineer whose research has made meaningful contributions to the field of residual stress analysis, particularly in the context of post-weld surface treatment techniques. Fihey's work focuses primarily on hammer-peening — a mechanical process used to improve the fatigue life and structural integrity of welded components by inducing beneficial compressive residual stresses. A central achievement in this body of work is the investigation of robotized hammer-peening, developed in collaboration with Hydro-Québec's research institute (IREQ) using the Scompi robotic platform, demonstrating how automation can bring precision and repeatability to this demanding process. Fihey's comparative study of residual stresses in hammer-peened, multi-pass welds across high-strength steels — including A514 (S690Q) and S41500 — has garnered 22 citations and stands as a key reference for engineers designing fatigue-resistant welded structures. With experimental methodologies grounded in strain gauge measurement and rigorous materials characterization, Fihey's contributions offer practical guidance for industries where weld quality and longevity are critical, including hydropower infrastructure and structural steel fabrication.