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首页> 外文期刊>Materials & design >Advanced ceramic components with embedded sapphire optical fiber sensors for high temperature applications
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Advanced ceramic components with embedded sapphire optical fiber sensors for high temperature applications

机译：具有嵌入式蓝宝石光纤传感器的高级陶瓷组件，适用于高温应用

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This paper describes an extrusion-based additive manufacturing process that has been developed to enable embedment of sapphire optical fiber sensors in ceramic components during the part fabrication. In this process, an aqueous paste of ceramic particles is extruded through a moving nozzle to build the part layer-by-layer. In the case of sensor embedment, the fabrication process is halted after a certain number of layers have been deposited; the sensors are placed in their predetermined locations, and the remaining layers are deposited until the part fabrication is completed. Because the sensors are embedded during the fabrication process, they are fully integrated with the part and the problems of traditional sensor embedment can be eliminated. Scanning electronmicroscopy was used to observe the embedded sensors and to detect any possible flaws in the part or embedded sensor. Attenuation of the sensors was measured in near-infrared region (1500-1600 nm wavelength). Standard test methods were employed to examine the effect of embedded fibers on the strength and hardness of the parts. The results indicated that the sapphire fiber sensors with diameters smaller than 250 micrometers were able to endure the freeform extrusion fabrication process and the post-processing without compromising the part properties. Published by Elsevier Ltd.
机译：本文介绍了一种基于挤压的增材制造工艺，该工艺已经开发出来，可以在零件制造过程中将蓝宝石光纤传感器嵌入陶瓷组件中。在此过程中，陶瓷颗粒的水性糊剂通过移动的喷嘴挤出，从而逐层构建零件。在嵌入传感器的情况下，在沉积了一定数量的层后，将停止制造过程。传感器放置在它们的预定位置，剩余的层沉积直到零件制造完成。由于传感器是在制造过程中嵌入的，因此它们与零件完全集成在一起，可以消除传统传感器嵌入的问题。扫描电子显微镜用于观察嵌入式传感器并检测零件或嵌入式传感器中的任何可能的缺陷。在近红外区域（波长1500-1600 nm）中测量传感器的衰减。采用标准测试方法来检查包埋纤维对零件强度和硬度的影响。结果表明，直径小于250微米的蓝宝石光纤传感器能够承受自由形式的挤压制造过程和后处理过程，而不会损害零件的性能。由Elsevier Ltd.发布

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