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

• Main Authors: Wang, P. (Author), Yang, J. (Author), Li, X. (Author), Liu, M. (Author), Zhang, X. (Author), Sun, D. (Author), Bao, C. (Author), Gao, G. (Author), Yahya, M. Y. (Author), Xu, S. (Author)
• Format: Article
• Language: English
• Published: Nature Publishing Group, 2017.
• Subjects: TJ Mechanical engineering and machinery
• Online Access: Get fulltext

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.