期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：6
页码：4298
DOI：10.15680/IJIRSET.2015.0406100
出版社：S&S Publications
摘要：Thermography technique relies on variation in temperature to identify inhomogeneities in the testmedium. Infrared thermography is a non-destructive testing method being used for the detection of shallow depthdefects in concrete structures. Infrared thermography technique relies on the infrared rays emitted by the test object toassess its surface temperature. In the present work, the recent research works on infrared thermography technique arereviewed in detail. Later, the possibility of employing thermocouple sensors to identify defects in concrete is explored.Towards this, an experiment is conducted to assess temperature variations in a concrete block of size 0.40.40.15 m.The block is cast with a defect of size 0.10.10.05 m. For the identification of the defect using the thermographytechnique, the characteristics of the heating source play an important role. Hence, it is proposed to explore the influenceof two heating sources on the non-destructive evaluation process. The oven heating and solar heating are considered inthe present study. While the oven heating simulates an ideal source with uniform heating of the test surface, the solarheating is uncontrolled. Thus, the influence of these two heating sources on the interpretation of the data for the nondestructive
关键词：active thermography; non-destructive testing; defect identification; thermocouple; oven; solar heating
