CAJ | 학술논문

利用二级轻气炮发射2017铝球弹丸，在两种环境温度下高速撞击编织物单防护屏结构和填充式结构，研究环境温度对铝网、玄武岩纤维布、Kevlar纤维布防护结构高速撞击损伤与防护特性的影响。用于模拟空间碎片的铝球弹丸直径为3.97 mm，撞击速度为1.47～4.47 km/s，撞击角度为0°，环境温度分别为293 K和393 K。结果表明：当撞击条件相同时，在较高环境温度中，单防护屏结构的编织物防护屏及填充式结构的编织物填充层的撞击穿孔尺寸均增大，三种编织物单防护屏结构的高速撞击防护能力下降，铝网及玄武岩纤维布填充式结构的高速撞击防护性能降低，Kevlar纤维布填充式结构的高速撞击防护性能提高。
이용이급경기포발사2017려구탄환，재량충배경온도하고속당격편직물단방호병결구화전충식결구，연구배경온도대려망、현무암섬유포、Kevlar섬유포방호결구고속당격손상여방호특성적영향。용우모의공간쇄편적려구탄환직경위3.97 mm，당격속도위1.47～4.47 km/s，당격각도위0°，배경온도분별위293 K화393 K。결과표명：당당격조건상동시，재교고배경온도중，단방호병결구적편직물방호병급전충식결구적편직물전충층적당격천공척촌균증대，삼충편직물단방호병결구적고속당격방호능력하강，려망급현무암섬유포전충식결구적고속당격방호성능강저，Kevlar섬유포전충식결구적고속당격방호성능제고。
A two-stage light gas gun is used to launch 2017-T4 Al-sphere projectiles impacting on single-wall bumper shield and stuffed bumper shield of woven at two kinds of ambient temperature. The effect of ambient temperature on damage and protection characteristic of Al-mesh, Basalt fiber cloth and Kevlar fiber cloth bumpers are studied. The diameter of projectile used to simulate space debris is 3.97 mm. Impact velocities of Al-spheres are varied between 1.47 km/s and 4.47 km/s. The impact angle is 0°. Ambient temperatures are 293 K and 393 K respectively. The results indicated that perforation size of woven bumper of single-wall bumper shield and woven stuffed wall of stuffed bumper shield increased at higher ambient temperature for the same impact condition. At the same time, the protection performance of all single-wall bumper shields of three woven bumpers degraded along with the rising of the ambient temperature, the protection performance of Al-mesh, Basalt fiber cloth stuffed bumper shields degraded and the protection performance of Kevlar fiber cloth stuffed bumper shield enhanced at higher ambient temperature.