Basic temperature correction of QWIP cameras in thermoelastic/plastic tests of composite materials

Boccardi Simone; Carlomagno Giovanni Maria; Meola Carosena

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Basic temperature correction of QWIP cameras in thermoelastic/plastic tests of composite materials

机译：复合材料热弹性/塑料试验中QWIP摄像机的基本温度校正

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The present work is concerned with the use of a quantum well infrared photodetector (QWIP) infrared camera to measure very small temperature variations, which are related to thermoelastic/plastic effects, developing on composites under relatively low loads, either periodic or due to impact. As is evident from previous work, some temperature variations are difficult to measure, being at the edge of the IR camera resolution and/or affected by the instrument noise. Conversely, they may be valuable to get either information about the material characteristics and its behavior under periodic load (thermoelastic), or to assess the overall extension of delaminations due to impact (thermo-plastic). An image post-processing procedure is herein described that, with the help of a reference signal, allows for suppression of the instrument noise and better discrimination of thermal signatures induced by the two different loads. (C) 2016 Optical Society of America

机译：本工作涉及使用量子孔红外光电探测器（QWIP）红外摄像机测量非常小的温度变化，该温度变化与热弹性/塑料效果有关，在相对低的负载下的复合材料上显影，周期性或由于冲击。正如以前的工作所示，一些温度变化难以测量，处于IR相机分辨率的边缘和/或受仪器噪声的影响。相反，它们可能是有价值的，以便在周期性负载（热弹性）下的材料特性及其行为的有价值，或者评估由于冲击（热塑性）的分层的整体延伸。这里的图像后处理过程描述了，在参考信号的帮助下，允许抑制由两个不同负载引起的热签名的仪器噪声和更好地辨别热签名。（c）2016年美国光学学会

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《Applied optics》 |2016年第34期|共8页
作者
Boccardi Simone; Carlomagno Giovanni Maria; Meola Carosena;
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Univ Naples Federico II Aerosp Div Dept Ind Engn Via Claudio 21 I-80125 Naples Italy;

Univ Naples Federico II Aerosp Div Dept Ind Engn Via Claudio 21 I-80125 Naples Italy;

Univ Naples Federico II Aerosp Div Dept Ind Engn Via Claudio 21 I-80125 Naples Italy;

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Basic temperature correction of QWIP cameras in thermoelastic/plastic tests of composite materials

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