IR Thermography as a Non-destructive Tool for Materials Characterisation and Structural Assessment of Buildings and Historic Structures

2018 ◽  
pp. 71-78
Author(s):  
Nicolas P. Avdelidis
Keyword(s):  
Ir Thermography ◽  
Structural Assessment ◽  
Historic Structures ◽  
Non Destructive

Application of Gradient Based IR Thermography to the GRP Structures Inspection

2011 ◽  
Vol 488-489 ◽  
pp. 682-685 ◽  
Author(s):  
Lovre Krstulović-Opara ◽  
Endri Garafulić ◽  
Branko Klarin ◽  
Željko Domazet
Keyword(s):  
Pulse Heating ◽  
Non Destructive Testing ◽  
Ir Thermography ◽  
Destructive Testing ◽  
Heat Flows ◽  
Testing Method ◽  
Reinforced Polymer ◽  
Gradient Based ◽  
Non Destructive ◽  
Gradient Approach

The article presents application of non destructive testing method based on the pulse heating infrared thermography used to detect material anomalies for the case of glass reinforced polymer structures. The goal of presented research, based on the thermal gradient approach, is to establish the procedure capable of filtering out anomalies from other thermal influences caused by thermal reflections of surrounding objects, geometry influences and heat flows for observed object.

Mid-Life Structural Assessment of Transit Rail Cars at WMATA

Joint Rail ◽  
2002 ◽  
Author(s):  
Marcin N. Taraszkiewicz
Keyword(s):  
Body Structure ◽  
Significant Deterioration ◽  
Structural Assessment ◽  
Door Opening ◽  
Critical Areas ◽  
Structural Deterioration ◽  
Operational Life ◽  
Vehicle Component ◽  
Inspection Work ◽  
Non Destructive

The Washington Metropolitan Area Transit Authority (WMATA) contracted with Booz Allen Hamilton to conduct a non-destructive structural assessment of the 2000 and 3000 series rapid transit rail cars. The main goals of the assessment were to identify any significant changes that have occurred to key elements of the car body structure since their date of manufacture and to confirm that no significant and obvious structural deterioration or damage exists. The methodology behind selecting a small representative sample of cars is discussed as an introduction to this work. The paper then discusses the process by which several critical areas were selected for non-destructive inspection. One of the biggest challenges in successfully completing this project was not interfering with WMATA’s fleet operating requirements. The use of WMATA facilities had to be coordinated to create minimum interference with WMATA’s daily maintenance activities. Also, the inspection work had to be planned in such a way as to minimize the amount of vehicle component disassembly in order to return the vehicle to revenue service as soon as possible. The inspections produced valuable results regarding the construction and condition of these cars. The structural welds of the car appear to have performed satisfactorily through the operational life of the cars to date without any significant deterioration. Some corrosion was noted in the door opening areas of the cars, particularly at the door thresholds. The findings of this report will be used to target specific areas of the car during the upcoming mid-life rehabilitation project.

scholarly journals Non-Destructive Characterization of Railway Materials and Components with Infrared Thermography Technique

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4077 ◽  
Author(s):  
Jeongguk Kim
Keyword(s):  
Infrared Thermography ◽  
Thermal Imaging ◽  
High Speed ◽  
Hot Spot ◽  
Imaging Techniques ◽  
Brake Disc ◽  
Ir Thermography ◽  
Contact Mode ◽  
Non Destructive Evaluation ◽  
Non Destructive

Infrared (IR) thermography technology is one of the leading non-destructive evaluation (NDE) techniques based on infrared detection. Infrared thermography, in particular, has the advantage of not only being used in non-contact mode but also provides full images, real-time inspection, and relatively fast results. These advantages make it possible to perform thermal imaging analysis of railway materials and/or components, such as brake disc simulation, monitoring of abnormal heat generation, and monitoring of temperature changes, during mechanical tests. This study introduces the current state of research on railway materials and/or components using IR thermography technology. An attempt was made to characterize the deterioration of electrical equipment of diesel electric locomotives using infrared thermal imaging techniques. In addition, surface temperature monitoring was performed during tensile testing of railway steels using a high-speed infrared camera. Damage evolution due to the hot spot generation of railway brake discs was successfully monitored using high-speed IR cameras. In this paper, IR thermal imaging technology, used as a non-destructive evaluation analysis in the railway field, was introduced, and the results of recent research are presented.

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