The effect of extreme cold temperatures on the quasi-static indentation and the low velocity impact behavior of woven carbon/epoxy composite sandwich panels with Nomex honeycomb core was investigated. Impact tests were performed at room temperature, –70°C, and –150°C. Two sizes of hemispherical impactor were used combined to three different impactor masses. All the impact tests were performed at the same initial impact velocity. The effect of temperature on the impact behavior is investigated by studying the load history, load-displacement curves and transmitted energy as a function of time curves. Impact damage induced at various temperatures was studied using different non-destructive and destructive techniques. Globally, more damages are induced with impact temperature decreasing. The results also show that the effect of temperature on the impact behavior is function of the impactor size.

研究了极端低温对具有Nomex蜂窝芯的机织碳/环氧树脂复合夹芯板的准静态压痕和低速冲击行为的影响。冲击试验在室温，–70°C和–150°C下进行。两种尺寸的半球形冲击器用于三种不同的冲击器质量。所有冲击试验均以相同的初始冲击速度进行。通过研究载荷历程，载荷-位移曲线和随时间变化的传递能量，研究了温度对冲击行为的影响。使用不同的非破坏性和破坏性技术研究了在不同温度下引起的冲击损伤。在全球范围内，随着冲击温度的降低，会引起更多的损害。