Study on Ballistic Absorbing Energy Character of High Performance Polyethylene Needle Felt

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Zhu, Kailiang^1 ; Fu, Jianqiao^1

Fire Research Institute of Shanghai, Shanghai

000021, China^1

关键词: Absorbing energy;    Ballistic performance;    Failure morphology;    High-speed projectiles;    Polyethylene fibers;    Specific energy absorption;    Tapered columns;    Temperature and humidities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012031/pdf
DOI  :  10.1088/1757-899X/269/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The ballistic performance of polyethylene needle felt is tested and the failure morphology after test is also observed. The results showed that when the non-dimensionally non-stressed fibers in polyethylene needles are subjected to high-speed projectile, secondary movement such as stretching and twisting occurs first. This secondary movement is very full, it is the main way of ballistic absorbing energy of the polyethylene needle felt which can avoid the polyethylene fiber short-term rapid heating-up and destroyed. Analysis results show that under normal temperature and humidity conditions, the V50 of 6-layer forded polyethylene needle felt sample is 250m/s. At (450 ± 50) m/s speed range of the target missile, the mean value of the penetrative specific energy absorption for 3-layer forded polyethylene needle felt anti-1.1g simulated projectiles (tapered column) reaches 24.1J•m2/kg.