New publication by Dr. Lingzhen Li

New paper out, led by Lingzhen Li (Empa and Chair of Structural Mechanics and Monitoring at ETH Zurich) in collaboration with Enzo Martinelli (University of Salerno), Wandong Wang (Northwestern Polytechnical University), Eleni Chatzi (ETH Zurich), and Elyas Ghafoori (Empa and Leibniz University Hannover)!

This work, titled Influence of post-processing methods on bond-slip behavior of nonlinear Fe-SMA lap-shear joints, serves as the final “chapter” of our trilogy.

In the first part, which constituted largely experimental work, we employed a “forward processing method”, adopted from carbon fiber reinforced polymer (CFRP) lap-shear joints, to investigate Fe-SMA lap-shear joints.

In the second part, which focused on modelling, we developed a “backward processing method”, tailored for Fe-SMA lap-shear joints, to gain a deeper understanding. These two post-processing methods yielded similar result for the bond and debonding behavior in Fe-SMA lap-shear joints, however, some inconsistency was observed.

In the current third part, we compare and discuss these two “forward” and “backward” processing methods, and employ FE simulation and corresponding physical tests for demonstration and validation. We show that the “backward processing method” can more accurately capture the bond-slip behavior of Fe-SMA lap-shear joints. Interestingly, CFRP and Fe-SMA lap-shear joints with identical geometry and adhesive type exhibit similar bond-slip behaviors.

Read more in the latest publication in Volume 21 (2024) of Case Studies in Construction Materials
external page https://www.sciencedirect.com/science/article/pii/S2214509524006363?via%3Dihub#ab0015

The related prior works are available in

• Construction and Building materials - external page https://www.sciencedirect.com/science/article/pii/S0950061822035139 and
• Engineering Fracture Mechanics - external page https://www.sciencedirect.com/science/article/pii/S0013794423001595