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首页> 外文期刊>Journal of Spacecraft and Rockets >Method to Have Multilayer Thermal Insulation Provide Damage Detection
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Method to Have Multilayer Thermal Insulation Provide Damage Detection

机译：多层隔热提供损伤检测的方法

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Spacecraft multilayer thermal insulation here to date has been used to reduce thermal radiation heat losses. Each layer is a thin layer of material, such as Mylar, coated with a reflective and electrically conductive material like aluminum. A method to create a wireless damage-detection array using the insulation has been developed. One layer of the insulation is designed as an array of passive open-circuit electrically conductive and reflective spiral patterns that are capable of storing electrical and magnetic energy when powered via an external oscillating magnetic field supplied by an antenna. Once electrically active, each pattern produces a harmonic magnetic field. No electrical connections are used between the patterns, on the patterns or to the patterns thereby allowing each pattern to be independent and also eliminating one cause of failure to circuits. The responding field frequency changes if any pattern is damaged. The spiral-pattern design provides sufficient area coverage for thermal insulation. Other insulation layers are designed to allow the responding magnetic fields to permeate the insulation layers. Arrays have been tested using hypervelocity impact projectiles of 1-3.6 mm diameter with speeds ranging from 6.7-7.1 km/s.
机译：迄今为止，航天器多层绝热材料已用于减少热辐射热损失。每层都是一层薄薄的材料，例如聚酯薄膜，上面涂有反射性和导电性材料，例如铝。已经开发出一种使用绝缘材料来创建无线损伤检测阵列的方法。绝缘层的一层被设计为无源开路导电和反射螺旋形图案的阵列，当通过天线提供的外部振荡磁场供电时，它们能够存储电能和磁能。一旦激活，每个模式都会产生谐波磁场。在图案之间，图案上或图案之间不使用电连接，从而允许每个图案是独立的，并且还消除了电路故障的一个原因。如果任何模式损坏，则响应的场频率会发生变化。螺旋图案设计为隔热提供了足够的面积。其它绝缘层被设计成允许响应的磁场渗透到绝缘层中。阵列已经使用直径为1-3.6 mm的超高速冲击弹丸进行了测试，速度范围为6.7-7.1 km / s。

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