A three-dimensionally woven carbon/phenolic composite was provided by ArianeGroup for characterization of surface behavior and measurement of internal temperature profile. ArianeGroup has developed a three-dimensionally woven carbon/phenolic composite material (called Naxeco® phenolic resin material), built from low cost, non-aerospace grade carbon fibers, and a phenolic resin already used to make impregnated 2D ablative fabrics but modified to be compatible with the Resin Transfer Molding (RTM) process. The 3D C/Ph material was tested in three different sample sets consisting of three tests each. Various flame conditions were used in the tests for a duration of 100 seconds each using an Oxyacetylene Test Bed (OTB) while being monitored with both electrical and optical instrumentation. A series of four ultra-fine type-K thermocouples were inserted into the material at different depths from the surface. Depending on the test, the thermocouples provided unique insights. The thermocouples nearest the flame were exposed and through a break-wire like mechanism yielded enough information to calculate the recession rate of the material in this medium heat flux environment. The thermocouples further from the flame were not exposed and monitored the internal temperature of the material. Surface temperature and behavior were monitored with a two-color Infrared (IR) pyrometer, an IR video camera, and a HD video camera with a filter. Numerical simulation and modeling was performed by ArianeGroup with their proprietary code that was developed for application on Solid Rocket Motor (SRM) operating conditions.
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机译：ARIANEGROUP提供三维编织碳/酚类复合物，用于表征表面行为和内部温度谱的测量。 Arianegroup开发了一种三维编织的碳/酚类复合材料（称为Naxeco®酚醛树脂材料），由低成本，非航空航天级碳纤维和已经用于制造浸渍的2D烧蚀织物但改性的酚醛树脂制造与树脂转移成型（RTM）加工相容。 3D C / pH材料在三种不同的样本集中进行测试，包括三个测试。在测试中，在测试中使用各种火焰条件100秒，每次使用氧乙炔试验床（OTB），同时用电气和光学仪器监测。将一系列四种超细型-K热电偶插入从表面不同深度的材料中。根据测试，热电偶提供了独特的见解。最接近火焰的热电偶暴露并通过突破线，类似机制产生足够的信息，以计算该媒体热通量环境中材料的衰退率。进一步从火焰的热电偶暴露并监测材料的内部温度。用双色红外（IR）高温计，IR摄像机和带有过滤器的高清摄像机监测表面温度和行为。 Arianegroup进行了数值模拟和建模，其专有代码是用于在固体火箭电机（SRM）操作条件下的应用。
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