吸波涂层损伤对隐身性能的影响

装备表面覆盖的吸波涂层在长期使用后容易发生磨损、膨胀、老化等损伤，从而影响吸收性能。利用反射率、相位测量和微波成像技术，研究了这3种损伤模式及其对吸收性能的影响。首先制作了带有三种损伤类型的雷达吸波涂层和红外 雷达兼容吸波涂层样板，采用弓形法测量反射率和相位，采用雷达散射成像系统建立样板散射图像。通过实验结果和定性分析，发现所有类型的损伤都使涂层吸收性能恶化，其相应的吸收频带变窄，并随涂层的结构或吸波材料成分的变化而变化。其中，磨损损伤模式对这两种吸波涂层的影响最为严重，导致吸收能力急剧下降。

Effect of Absorbing Coatings Damage on Invisibility Performance

The absorbing coating covered in the surface of equipment is apt to have the damage of abrasion, bulging, aging after used for a long period of time. In this paper, the three damage modes and its influence on absorbing performance are investigated by the reflectivity and phase measurement and microwave imaging. The above three kinds of damage samples of radar absorbing coating and infrared radar absorbing coating are made, reflectivity and phase are measured with arch method, and microwave images are built by the radar scattering imaging system for stealthy target. With the comparison of the experimental results and qualitative analysis, it is found that the all of the damage on coating make the absorbing performance deteriorate, its corresponding absorbing band become narrow, and a shift due to the variation in structure and composition of absorbing materials. However, the wear damage mode has the most serious impact on the two kinds of microwave absorbing coatings, resulting in a sharp decline in the absorption capacity