ASTM F320-2010标准冰雹的抗压力学性能实验研究

结合ASTM F320—2010标准《航空与航天透明外壳冰撞测试》用人工冰雹,制备了两种形状、7种含量纤维增强的冰柱和冰球,基于万能试验机实施了两种加载速率下的单向压缩实验,探索了人工模拟冰雹的非线性压缩力学性能。将纤维增强冰雹与纯冰类比,发现了纤维含量对冰雹抗压强度有提高效果,不同纤维含量在不同加载速率下对冰雹抗压性能的影响存在差异,提出6%纤维含量的人工冰雹撞击测试应纳入未来商用航空发动机及民用大飞机适航取证的吸雹实验考虑范围。

Experiment on Nonlinear Mechanics of Artificial Hail Based On ASTM F320-2010

Combined with ASTM F320-2010 ASTM International standard test method for hail impact resistance of aerospace transparent enclosures, two kinds of shape, seven kinds of content of fiber reinforced ice cylinders and ice balls are made. Via the universal testing machine, under two loading rate the hail compression experiment was done, exploring the failure mechanism and mechanical properties of hail. As opposed to clear ice, this paper found that the fiber content has improved effect on the hail compressive strength, however, different fiber content under different loading rate has different effect on the performance of the hail compressive strength. In the end, the results show that impact test with 6% fiber content of artificial hail should be incorporated into future commercial aircraft airworthiness certification tests.