Thermal imaging techniques for the non destructive inspection of composite materials in real-time

2005 ◽  
Author(s):  
T. Durrani ◽  
A. Rauf ◽  
K. Boyle ◽  
F. Lotti ◽  
S. Baronti
Keyword(s):  
Composite Materials ◽  
Real Time ◽  
Thermal Imaging ◽  
Imaging Techniques ◽  
Non Destructive

Fruit Ripeness Estimation for Avocado Using Thermal Imaging

2018 ◽  
Author(s):  
Sathish K. Gurupatham ◽  
Erhan Ilksoy ◽  
Nick Jacob ◽  
Kevin Van Der Horn ◽  
Fahad Fahad
Keyword(s):  
Thermal Imaging ◽  
Imaging Techniques ◽  
Scientific Enterprise ◽  
Thermal Images ◽  
Novel Technologies ◽  
Different Temperatures ◽  
Visible Images ◽  
Specific Heat Capacities ◽  
Analytical Approaches ◽  
Non Destructive

Novel technologies have always been an indispensable part of the scientific enterprise and a catalyst for new discoveries. The invisible radiation patterns of objects are converted into visible images called thermograms or thermal images. Thermal images can be utilized to estimate the ripeness of some fruits which do not change their color from yellow to green when they are ripe. Thermal imaging techniques are very helpful since color and fluorescent analytical approaches cannot be applied to these fruits. In this work, it is shown that different ripeness levels of avocado (Hall type) using a non-destructive method called thermal imaging, in two dimensional spaces. The work is based on the fact that fruits have different specific heat capacities at different temperatures, thus making their thermal images clear indicators of ripeness.

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.

scholarly journals Identification of structural defects in composite materials by the thermal imaging non-destructive testing method

2019 ◽  
Vol 298 ◽  
pp. 00119
Author(s):  
Andrey Kokurov ◽  
Igor Odintsev ◽  
Boris Chichigin ◽  
Dmitry Subbotin
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Thermal Imaging ◽  
Structural Defects ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Testing Method ◽  
Non Destructive ◽  
Layered Polymer Composites

The article discusses the practical aspects of applying the thermal imaging non-destructive testing method of layered polymer composites. The specific purpose of the work is to demonstrate the possibilities of detecting in material and geometric identification of initial defects such as debonding.

Active Thermografy as a Method for Non-destructive Testing of Polymer Composite Materials

2021 ◽  
Vol 16 (2) ◽  
pp. 5-9
Author(s):  
Eva Popardovská ◽  
◽  
Vladimír Popardovský ◽  
Keyword(s):  
Composite Materials ◽  
Real Time ◽  
Material Surface ◽  
Non Destructive Testing ◽  
Ir Thermography ◽  
Testing Methods ◽  
Destructive Testing ◽  
Thermal Fields ◽  
Active Thermography ◽  
Non Destructive

Infrared (IR) thermography is a method for imaging thermal fields on the target surfaces in real time. It is a noncontact and non-destructive method of obtaining thermogram of tested material surface or inside of it. We can divide the IR thermographic testing methods into two basic groups – passive and active thermography. This article introduces a basic overview of IR active thermography.

scholarly journals Non-destructive high-resolution thermal imaging techniques to evaluate wildlife and delicate biological samples

2009 ◽  
Vol 178 ◽  
pp. 012040 ◽  
Author(s):  
C Lavers ◽  
P Franklin ◽  
P Franklin ◽  
A Plowman ◽  
G Sayers ◽  
...  
Keyword(s):  
High Resolution ◽  
Biological Samples ◽  
Thermal Imaging ◽  
Imaging Techniques ◽  
Non Destructive

On-Line Identification and Control of Part-Preparation and Fixturing Errors in Arc Welding

1993 ◽  
Vol 115 (4) ◽  
pp. 385-389 ◽  
Author(s):  
S. Nagarajan ◽  
H. C. Wikle ◽  
B. A. Chin
Keyword(s):  
Real Time ◽  
Thermal Imaging ◽  
Arc Welding ◽  
Imaging Techniques ◽  
Welding Process ◽  
Robotic Welding ◽  
Infrared Thermal Imaging ◽  
Joint Preparation ◽  
On Line ◽  
And Control

Sensing elements need to be incorporated in robotic welding systems to enable the robot to perceive and adapt to on-line variations occurring in the welding process. In this work, infrared thermal imaging techniques have been used to track variations produced by inadequate control during the joint preparation and fixturing stages. Variations in two joint parameters, gap and position, were studied. Changes in these parameters were found to have peculiar effects on the surface temperature distributions. The observed effects were used to develop quantitative error signals. These error signals were then used to measure the joint gaps and joint-torch offsets in real-time. The joint torch offset error signal was successfully used to control an initial error in joint position during real-time welding.

Evaluation of Package Defects by Thermal Imaging Techniques

2002 ◽  
Author(s):  
Yongmei Liu ◽  
Rajen Dias
Keyword(s):  
Infrared Thermography ◽  
Thermal Imaging ◽  
High Speed ◽  
Imaging Techniques ◽  
Thermal Response ◽  
Analysis Tool ◽  
Nondestructive Analysis ◽  
Ir Camera ◽  
External Heating

Abstract Study presented here has shown that Infrared thermography has the potential to be a nondestructive analysis tool for evaluating package sublayer defects. Thermal imaging is achieved by applying pulsed external heating to the package surface and monitoring the surface thermal response as a function of time with a high-speed IR camera. Since the thermal response of the surface is affected by the defects such as voids and delamination below the package surface, the technique can be used to assist package defects detection and analysis.

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