The use of infrared thermography for materials characterization
The use of infrared thermography for materials characterization
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DOI：
10.1016/j.jmatprotec.2004.04.268
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发表时间：
2004-11-30
影响因子：
6.3
通讯作者：
Giorleo, L
中科院分区：
文献类型：
--
作者：
Meola, C;Carlomagno, GM;Giorleo, L
本实验研究的目的是突出红外热成像在材料表征中提供的帮助。红外热成像是一种二维、非接触式的表面温度测绘技术，可用于制造过程的质量保证以及最终产品的无损评估。红外热成像的无损评估可以通过两种基本方式进行：脉冲热成像（PT）或调制锁相热成像（MT）。这两种技术都能够揭示材料的不均匀性，这可能会出现在制造过程中，或在服务。特别是，在NIT技术中，相位角值可以与特定特征（密度、孔隙率、硬度等）相关联。的材料。因此，NIT可以用于表征许多材料，无论是金属，还是塑料，复合材料等，这些材料通常用于不同的领域：食品，建筑，汽车，航空，电源。结果证明了MT区分非常相似的材料的能力，并且可以有利地利用该特征来评估由于老化或暴露于不利的环境条件而在材料特性中发生的修改。(C)2004 Elsevier B.V.保留所有权利。
The aim of the present experimental study is to highlight the help provided by infrared thermography in the characterization of materials. Infrared thermography is a two-dimensional, non-contact technique of surface temperature mapping which can be usefully exploited for quality assurance of manufacturing processes as well as for non-destructive evaluation of end products. Non-destructive evaluation with infrared thermography can be performed in two basic ways: pulse thermography (PT), or modulated lockin thermography (MT). Both techniques are able to reveal material inhomogeneties, which can arise either during manufacturing processes, or in service. In particular, within the NIT technique a phase angle value may be associated to a specific characteristic (density, porosity, hardness, etc.) of the material. Thus, NIT can be exploited for characterization of many materials either metallic, or plastics, composites, etc. which are commonly used in different fields: alimentary, architectural, automotive, aeronautical, mains. Results prove the capability of MT to discriminate between materials very similar and this feature can be advantageously exploited to evaluate modifications that occur in material characteristics as consequence of ageing, or exposure to adverse environmental conditions. (C) 2004 Elsevier B.V. All rights reserved.