Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity

Moskovchenko, Alexey; Вавилов, В. П.; Švantner, Michal; Muzika, Lukáš; Houdková, Šárka

doi:10.3390/ma13184057

Cited by 19 publications

(6 citation statements)

References 22 publications

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“…However, modifications to the metal bonding coating (BC) have an impact on the measurement results [6]. The test sample must be heated in order to use infrared thermal imaging, and coating materials with low thermal emissivity are hard to find [7]. Radiation penetrating coatings' intensity attenuation is used in radiography testing to convert thickness measurements; however, this process can produce ionizing radiation and jeopardize the inspectors' physical safety [8].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Comparative research on ultrasonic and THz methods for thickness measurement of thermal barrier coatings

HUANG,

CAO,

FAN

et al. 2023

Preprint

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The thickness evaluation of thermal barrier coatings has emerged as a crucial issue, with ultrasonic testing (UT) and THz testing being the two dominant non-destructive evaluation methods. Focusing on thermal barrier coatings, this paper compares the thickness measurement results obtained from these two methods. When compared to the results obtained from a profilometer, the maximum error in ultrasonic thickness measurement is found to be 6.7%, while the maximum error in THz thickness measurement is 5.8%. The paper also discusses the primary advantages and disadvantages of the existing methods, concluding that both approaches can enhance the lifespan and safety of turbine blades.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Comparative research on ultrasonic and THz methods for thickness measurement of thermal barrier coatings

HUANG,

CAO,

FAN

et al. 2023

Preprint

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“…Using active IR thermography to evaluate coating thickness is a common technique for NDT of materials. To demonstrate the feasibility of this method, Moskovchenko et al [ 151 ] described a one-sided thermal NDT procedure that employed apparent effusivity as a quantitative method for evaluating coating thickness. The proposed algorithm determined a threshold value of apparent effusivity based on specific coating-on-substrate structures.…”

Section: Ndt Systemsmentioning

confidence: 99%

A Systematic Review of Advanced Sensor Technologies for Non-Destructive Testing and Structural Health Monitoring

Hassani

Dackermann

2023

Sensors

126

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This paper reviews recent advances in sensor technologies for non-destructive testing (NDT) and structural health monitoring (SHM) of civil structures. The article is motivated by the rapid developments in sensor technologies and data analytics leading to ever-advancing systems for assessing and monitoring structures. Conventional and advanced sensor technologies are systematically reviewed and evaluated in the context of providing input parameters for NDT and SHM systems and for their suitability to determine the health state of structures. The presented sensing technologies and monitoring systems are selected based on their capabilities, reliability, maturity, affordability, popularity, ease of use, resilience, and innovation. A significant focus is placed on evaluating the selected technologies and associated data analytics, highlighting limitations, advantages, and disadvantages. The paper presents sensing techniques such as fiber optics, laser vibrometry, acoustic emission, ultrasonics, thermography, drones, microelectromechanical systems (MEMS), magnetostrictive sensors, and next-generation technologies.

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“…Moskovchenko et al [120] introduced a quantitative evaluation technique for coating thickness using the apparent thermal effusivity method. The proposed algorithm in pulsed thermography is based on determining the threshold of apparent utilization that can be found in a specific coating-on-substrate structure.…”

Section: Active Thermography For Enhanced Detectabilitymentioning

confidence: 99%

Latest Advances in Common Signal Processing of Pulsed Thermography for Enhanced Detectability: A Review

2021

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Non-destructive testing (NDT) is a broad group of testing and analysis techniques used in science and industry to evaluate the properties of a material, structure, or system for characteristic defects and discontinuities without causing damage. Recently, infrared thermography is one of the most promising technologies as it can inspect a large area quickly using a non-contact and non-destructive method. Moreover, thermography testing has proved to be a valuable approach for non-destructive testing and evaluation of structural stability of materials. Pulsed thermography is one of the active thermography technologies that utilizes external energy heating. However, due to the non-uniform heating, lateral heat diffusion, environmental noise, and limited parameters of the thermal imaging system, there are some difficulties in detecting and characterizing defects. In order to improve this limitation, various signal processing techniques have been developed through many previous studies. This review presents the latest advances and exhaustive summary of representative signal processing techniques used in pulsed thermography according to physical principles and thermal excitation sources. First, the basic concept of infrared thermography non-destructive testing is introduced. Next, the principle of conventional pulsed thermography and signal processing technologies for non-destructive testing are reviewed. Then, we review advances and recent advances in each signal processing. Finally, the latest research trends are reviewed.

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Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity

Cited by 19 publications

References 22 publications

WITHDRAWN: Comparative research on ultrasonic and THz methods for thickness measurement of thermal barrier coatings

WITHDRAWN: Comparative research on ultrasonic and THz methods for thickness measurement of thermal barrier coatings

A Systematic Review of Advanced Sensor Technologies for Non-Destructive Testing and Structural Health Monitoring

Latest Advances in Common Signal Processing of Pulsed Thermography for Enhanced Detectability: A Review

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