Thermography, a tool for reliability and safety

Epperly, R.A.; Heberlein, G.E.; Eads, Laura

doi:10.1109/2943.740757

Cited by 26 publications

(9 citation statements)

References 3 publications

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“…Thermography is mainly utilized for non-destructive analysis, fault analysis, and medical analysis. These applications can be further expanded into fields like investigation of historic structures [111], flat bottom hole analysis in slabs [112], loose electrical connections [113], sports medicine [114], dentistry [115], medical applications [116,117], electrical motor applications [118], power plants [119], heater process [120], mechanical systems and hydraulic components [121], energy conservation [122], surveillance and security [123,124,125], civil constructions [126,127], marine engineering applications [128], animal reproduction [129], defence systems and military applications [130,131], dairy applications [132], pathological analysis in structures for building strength analysis and maintenance [133], automobile industries [134,135,138], gas leakage and detection [136,137,140], aerial survey of buried objects [139], agriculture [141], food processing industry [142,143], food quality assessment [144], waste management [145], soil assessment [146], research and development works [147], printed circuit board fabrication & solar cell diagnostics [148], etc. The applications extend to a larger range and only a few are discussed above.…”

Section: Application and Cost In Industriesmentioning

confidence: 99%

Review on Conveyor Systems and Thermography

Singh¹,

Rukkumani²,

Manju³

et al. 2020

JESTR

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Dryer systems play a very significant role in most process industries. There are different composers of dryers based on its nature of drying and the item being utilized for drying. Some dryers use direct contact and some involve indirect contact for drying. But most widely used dryers are associated with a conveyor system which utilizes the transportation of materials along with smooth drying. Implementing a proper design of dryer along with a conveyor is very much essential and eliminates or reduces the non-uniformity in the drying of materials to improve the system efficiency. Some dryers work on electricity and some on solar systems. In this paper, we have prepared a literature review of the proposal and performance of various dryer and conveyor systems. Application of thermography for dryer systems will help in predicting the nonlinear nature exhibited in the dryer system thereby enhancing the protection and proper control for even drying of materials.

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Section: Application and Cost In Industriesmentioning

confidence: 99%

Review on Conveyor Systems and Thermography

Singh¹,

Rukkumani²,

Manju³

et al. 2020

JESTR

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“…Therefore, it is feasible to use infrared imaging method and ultraviolet imaging method to detect and locate zero‐value insulators. Compared with traditional methods, these two methods have the advantages of being non‐contact, offering live detection, with intuitive results [6,7].…”

Section: Introductionmentioning

confidence: 99%

Infrared and UV Imaging Characteristics of Insulator Strings Containing a Zero‐Value Insulator Based on Experiment and Multi‐Physics Simulation

Wang

Jiang

et al. 2021

IEEJ Transactions Elec Engng

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To study the effectiveness of infrared and UV imaging technology to detect zero‐value insulators, the infrared thermal images and UV videos of zero‐value insulators at different positions on insulator strings were collected at different humidities and levels of pollution. The heat and discharge characteristics of the insulator strings were analyzed. The thermal‐electric multi‐physics simulation models were established with COMSOL Multiphysics finite element analysis software. The temperature and electric field distributions of the insulator string under different conditions were verified. The study shows that, under conditions of dry pollution, the insulator strings did not easily discharge, thus the UV imaging method cannot effectively detect a zero‐value insulator. The infrared thermal image shows that the temperature rise in a normal insulator is significantly higher than that in a zero‐value insulator; zero‐value insulators can thus be detected using infrared imaging. In the case of wet pollution, infrared and UV imaging may return erroneous results due to heavy pollution of high conductivity and unevenness of pollution owing to moisture. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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“…With the implementation of composite materials in airframes and space vehicles, nondestructive evaluation (NDE) of flaws, cracks, and voids in materials structures became much more difficult, particularly with lossy materials that dissipated ultrasonic pulses without returning reliable information. Because of this, IRT using direct, pulsed, flash, and transmission modes have been developed and have been proven to be useful for both basic research and production applications (Epperly and others , Shepard and Frendberg , Shepard , Shepard , Tarin and Rotolante , Avdelidis and others , Balageas , Maldague and others , Balaguera and others ). In addition, once the ability of human operators to resolve defects by visual observation was established, the challenge became adapting computer vision technology for the assistance or replacement of human operators to lower the variability of detection (Vallerand and Maldague , Ibarra‐Castanedo and others ).…”

Section: Introductionmentioning

confidence: 99%

Detection and Characterization of Package Defects and Integrity Failure using Dynamic Scanning Infrared Thermography (DSIRT)

Morris

2015

Journal of Food Science

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A dynamic scanning infrared thermography (DSIRT) system developed at the Univ. of Illinois Urbana-Champaign (UIUC) Packaging Lab relies on variation in transient thermal artifacts to indicate defects, and offers the possibility of characterization of many types of materials and structures. These include newer polymer and laminate-based structures for shelf-stable foods that lack a reliable, nondestructive method for inspection, which is a continuing safety issue. Preliminary trials were conducted on a polyester/aluminum foil/polypropylene retort pouch laminate containing artificially-induced failed seal and insulating inclusion defects ranging from 1 to 10 mm wide in the plane of the seal. The samples were placed in relative motion to a laterally positioned infrared laser, inducing heating through the plane of the seal. The emergent thermal artifact on the obverse side was sensed using either a bolometer camera or a thermopile sensor, with thermal anomalies indicating potential defects and the results of each sensors were compared. The bolometer camera detected defects to the limit of its measured optical resolution-approximately 1 mm at 20 cm-although the lower-resolution thermopile sensors were only capable of detecting 5 mm defects even at closer distances of approximately 5 mm. In addition, a supplementary magnification system was fitted to the bolometer camera which increased resolution but reduced field of view and would require a much higher frame rate to be useful. Automatic processing of the image data rapidly detected the model defects and can lead to development of an automated inspection system. Much higher material throughput speeds are feasible using faster instruments, and the system is scalable.

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Thermography, a tool for reliability and safety

Cited by 26 publications

References 3 publications

Review on Conveyor Systems and Thermography

Review on Conveyor Systems and Thermography

Infrared and UV Imaging Characteristics of Insulator Strings Containing a Zero‐Value Insulator Based on Experiment and Multi‐Physics Simulation

Detection and Characterization of Package Defects and Integrity Failure using Dynamic Scanning Infrared Thermography (DSIRT)

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