The addition of copper nanoparticles reduces the surface un-evenness of steel, which then limits the number of stress risers and hence fatigue cracking. Advancements in this technology through the use of nanoparticles would lead to increased safety, less need for regular inspection, and more efficient materials free from fatigue issues for construction.
The use of copper nanoparticles in steel enhances its resistance to fatigue damage by reducing surface irregularities that can cause stress risers. This leads to safer structures with less need for frequent inspections and more durable materials.