I’m a PhD researcher specialising in cold-formed steel at the University of Waikato and a recipient of a HERA Foundation Scholarship, which supports my work in optimising weld sizes and details to improve structural performance and cost efficiency.

My journey in structural engineering spans over 15 years, where I’ve worked as a structural engineer and land surveyor, honing expertise in both practical applications and advanced research techniques.

My PhD research is focused on optimising weld sizes and details for enhanced performance and cost-effectiveness, with a particular focus on improving the standards for welded joints used in seismic connections. My work investigates the effects of incomplete penetration on butt and fillet welded joints under various conditions, including double symmetric and asymmetric welds. By using both experimental tests and finite element analysis (FEA) with specialised software such as ABAQUS, I aim to gain a comprehensive understanding of the parameters affecting welded joints, including weld penetration ratio, plate thickness, steel grade, and weld size.

The initial phase of my research involves conducting small-scale tests on cruciform and T-stub welded joints under cyclic loading, after which I develop finite element models to simulate these welded joints. This parametric study allows me to evaluate weld sizes and details against NZS 3404 design standards, potentially identifying ways to refine and optimise current guidelines.

My research is part of a larger seismic research programme at HERA, dedicated to enhancing the structural resilience of welded joints under seismic conditions. The project’s ultimate goal is to produce optimised design recommendations that improve structural safety, especially in seismic zones. By conducting a reliability analysis, my work ensures that the proposed solutions meet rigorous safety standards, ultimately contributing to safer, more efficient construction practices that benefit both the industry and society.

My passion lies in driving innovation within structural engineering, particularly around welded joints and structural design optimisation.

Ahmad’s recent kōrero