High-speed phosphor thermometry

N. Fuhrmann, E. Baum, J. Brübach, A. Dreizler

doi:10.1063/1.3653392

<jats:p>Phosphor thermometry is a semi-invasive surface temperature measurement technique utilising the luminescence properties of doped ceramic materials. Typically, these phosphor materials are coated onto the object of interest and are excited by a short UV laser pulse. Up to now, primarily Q-switched laser systems with repetition rates of 10 Hz were employed for excitation. Accordingly, this diagnostic tool was not applicable to resolve correlated temperature transients at time scales shorter than 100 ms. This contribution reports on the first realisation of a high-speed phosphor thermometry system employing a highly repetitive laser in the kHz regime and a fast decaying phosphor. A suitable material was characterised regarding its temperature lifetime characteristic and its measurement precision. Additionally, the influence of laser power on the phosphor coating was investigated in terms of heating effects. A demonstration of this high-speed technique has been conducted inside the thermally highly transient system of an optically accessible internal combustion engine. Temperatures have been measured with a repetition rate of 6 kHz corresponding to one sample per crank angle degree at 1000 rpm.</jats:p>

High-speed phosphor thermometry

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収録刊行物

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問題の指摘

High-speed phosphor thermometry

説明

収録刊行物

被引用文献 (2)*注記

詳細情報 詳細情報について

書き出し

問題の指摘

詳細情報詳細情報について