Integrating sensors in castings made of aluminum – new approaches for direct sensor integration in gravity die casting

Integrating sensors in castings made of aluminum – new approaches for direct sensor integration in gravity die casting
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将传感器集成到铝铸件中——在重力压铸中直接集成传感器的新方法

DOI:
10.1016/j.promfg.2018.06.042
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发表时间:
2018
期刊:
Procedia Manufacturing
影响因子:
--
通讯作者:
W. Lang
W. Lang
中科院分区:
--
文献类型:
--
作者:
R. Tiedemann;M. Fischer;M. Busse;W. Lang

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结构健康监测依赖于构件的机械和热测量。对于元件表面的应变计,需要一个结构模型来获得感兴趣点的内部状态知识,而集成传感器可以直接测量元件内部的应变和温度,而不需要将传感器安装在表面上的粘合剂的影响。在重力压铸中集成传感器有一定的要求。传感器必须承受铸造过程的恶劣条件,温度约为750°C,熔体凝固过程中的收缩率为1.1%。如果传感器-衬底基于相同的热膨胀系数,则可以增加嵌入式传感器的产量,这可以通过收缩减少冷却阶段和熔体凝固点的应力。铝作为基材使铸件中的异物量保持在最低限度。在本文中,我们提出了第一种方法集成传感器在铝基板重力压铸过程中。介绍了丝网印刷厚膜传感器的设计、制作和嵌入。对嵌入式传感器集成到重力压铸铝中前后的热行为和扩散进行了测试。
Structural health monitoring relies on mechanical and thermal measurements of the component. Whereas for a strain gauge on the surface of a component a structural model is needed to gain knowledge of the internal state at the point of interest, integrated sensors can measure strain and temperature directly inside the component without the influence of adhesives required to mount the sensor on the surface.Integrating sensors in gravity die casting leads to certain requirements. The Sensors have to withstand the harsh conditions of the casting process at temperatures around 750 °C and a shrinkage of 1.1 % during solidification of the melt. The yield of embedded sensors can be increased, if the sensor-substrate is based on the same coefficient of thermal expansion, which reduces stress during the cooling phase and at the solidification point of the melt through shrinkage. Aluminum as substrate keeps the amount of foreign matter in the casting good at a minimum.In this paper we present the first approach to integrate sensors on aluminum substrates during gravity die casting. The design, fabrication and embedding of screen printed thick-film sensors is shown. The embedded sensors are examined before and after their integration into gravity die-cast aluminum in terms of thermal behavior and diffusion.
DOI: 10.4028/www.scientific.net/kem.742.786
发表时间: 2017
期刊: Key Engineering Materials
影响因子: --
作者:
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通讯作者: W. Lang
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发表时间: 2008
期刊:
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DOI: 10.26153/tsw/7104
发表时间: 2005
期刊: Sensors (Basel, Switzerland)
影响因子: --
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