黑龙江科技大学学报2024，Vol.34Issue(3)：387-393,7.DOI:10.3969/j.issn.2095-7262.2024.03.009
钨球对聚脲铝板结构的侵彻效应
Oblique penetration effect of a tungsten ball on aluminum plate structure with polyurea coating
摘要
Abstract
This paper is aimed at exploring the enhancement effects of the soft polyurea coating on anti fragmentation impact performance of 2024 aluminum plates.The study involves conducting a ballistic exper-iment loading spherical fragments to impact the composite structures of different polyeaur coatings;analy-zing the effect of the thickness and the relative position of the polyeaur coatings on anti impact performance of the composite plate;analyzing the dynamic failure of the composite plate by a high-speed camera and the digital image method;and testing the local damage and interfacial debondin with CT technology.The re-sults indicate that the anti impact performance of aluminum plates with polyurea coating on both sides or the reverse side is improved,and the maximum decrease more than 50%presents along the low velocity to me-dium speed segment,and the minimum decrease presents only about 10%,as which explains the coating ways has little influence on the impact resistance enhancement effect of aluminum plate,and the enhance-ment effect decreases with the increase of fragment initial velocity.On the initial velocity impact of 527 m/s,the fragment velocity attenuation of the plates with10Al/2P and10Al/6P structures are75.5%and79.6%,respectively,and the composite plate absorbs more impact kinetic energy with the increase of coating thickness.With the composite structure subjected to the impact load of 1 000 m/s,the velocity attenuation with 4 and 6 mm coating thickness are 20%and 21.2%,respectively.关键词
铝板/抗侵性能/聚脲涂层/涂层断裂Key words
aluminium plate/penetration resistance/polyurea coating/coating fracture分类
数理科学引用本文复制引用
高金明,杨军,何成龙..钨球对聚脲铝板结构的侵彻效应[J].黑龙江科技大学学报,2024,34(3):387-393,7.基金项目
博士后科学基金项目(2021M702981) （2021M702981）
