Manufacturing and performance evaluation of dimpled sheets: A comprehensive review

Dimple sheet surfaces have attracted considerable interest in multiple sectors owing to their distinctive structure and beneficial characteristics. The surfaces discussed demonstrate a wide range of applications, including the protection of waterproofing systems in subterranean structures, the management of water drainage, and the alleviation of hydrostatic pressure in construction. They offer slip-resistant, durable, and economical solutions for industrial and building flooring. Additionally, they improve heat transfer efficiency in industrial processes via laser-welded dimple plates in heat exchangers, and they provide moisture and soil pressure protection for foundation walls through specialized dimpled designs. This study offers an in-depth examination of dimple sheet surfaces, emphasizing the processes involved in their formation and their performance attributes. Understanding the mechanical and structural characteristics of dimple sheets is crucial for enhancing manufacturing techniques, improving material efficacy, and investigating novel applications. This review opens the door for more study and technical developments in this area by offering insights into formation mechanisms, characterization methods, and surface characteristics. This review focuses on the finite element simulation of the dimpling process, examining mechanical characteristics through tensile, bending, and compression tests. Important results show that, in comparison to plain sheets, dimpled sheets exhibit up to 9% higher yield strength, 6% higher tensile strength, and 23% higher bending strength. The modeling approach was validated by the close match between the finite element simulations and experimental data. These findings highlight the mechanical benefits of dimpled structures as well as their potential for application and design optimization. Furthermore, it investigates the effects of friction and tooth overlapping on the dimpling process via simulation. Findings from both finite element simulations and experimental investigations demonstrate a high level of concordance. The investigation further examines how process parameters influence the dimpling process and explores strategies for optimization. The behavior of dimpled steel columns under side-impact stresses at low velocities is also thoroughly examined.