Modification of the contact surfaces for improving the puncture resistance of laminar structures

• Main Authors: Wang, Pengfei, Yang, Jinglei, Li, Xin, Liu, Mao, Zhang, Xin, Sun, Dawei, Bao, Chenlu, Gao, Guangfa, Yahya, Mohd Yazid, Xu, Songlin
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2018
• Subjects: Laminar Structures; Puncture Resistance; DRNTU::Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/88133; http://hdl.handle.net/10220/45626
• Institution: Nanyang Technological University

Uncovering energy absorption and surface effects of various penetrating velocities on laminar structures is essential for designing protective structures. In this study, both quasi-static and dynamic penetration tests were systematical conducted on the front surfaces of metal sheets coated with a graphene oxide (GO) solution and other media. The addition of a GO fluid film to the front impact surface aided in increasing the penetration strength, improving the failure extension and dissipating additional energy under a wide-range of indentation velocity, from 3.33 × 10−5 m/s to 4.42 m/s. The coated -surfaces improved the specific energy dissipation by approximately 15~40% relative to the dry-contact configuration for both single-layer and double-layer configurations, and specific energy dissipations of double-layer configurations were 20~30% higher than those of the single-layer configurations. This treatment provides a facile strategy in changing the contact state for improving the failure load and dissipate additional energy.