Dynamic Thermal Tomography of Composites

A Comparison of Reference and Reference-Free Approaches

Результат исследований: Материалы для журналаСтатья

Выдержка

Dynamic thermal tomography is a technique that allows the display of “slices” of solids by analyzing the evolution of surface temperature as a function of time. This paper presents the principles of one-sided thermal tomography using reference points and also introduces a technique of thermal tomography that does not require the use of reference point. The diffusion nature of heat conduction in solids causes lateral diffusion, which modifies and complicates the heat flow that is needed to detect defects. In the case of anisotropic composite materials the heat will diffuse more readily in one direction than another. Lateral diffusion can make it difficult to detect (visualize) deep defects, especially those located under shallower ones. Artifacts can be reduced by thresholding timegrams but this may hide small defects. The effectiveness of thermal tomography in detecting impact damage (cracks/delaminations) in composites has been confirmed by numerous experiments.

Язык оригиналаАнглийский
Номер статьи2
ЖурналJournal of Nondestructive Evaluation
Том38
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2019

Отпечаток

Tomography
Composite materials
Defects
Delamination
Heat conduction
Display devices
Hot Temperature
Heat transfer
Cracks
Experiments
Temperature

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Цитировать

Dynamic Thermal Tomography of Composites : A Comparison of Reference and Reference-Free Approaches. / Vavilov, Vladimir P.; Kuimova, Marina V.

В: Journal of Nondestructive Evaluation, Том 38, № 1, 2, 01.01.2019.

Результат исследований: Материалы для журналаСтатья

@article{270fa6fbf0a44b51a695bdb3129f9663,
title = "Dynamic Thermal Tomography of Composites: A Comparison of Reference and Reference-Free Approaches",
abstract = "Dynamic thermal tomography is a technique that allows the display of “slices” of solids by analyzing the evolution of surface temperature as a function of time. This paper presents the principles of one-sided thermal tomography using reference points and also introduces a technique of thermal tomography that does not require the use of reference point. The diffusion nature of heat conduction in solids causes lateral diffusion, which modifies and complicates the heat flow that is needed to detect defects. In the case of anisotropic composite materials the heat will diffuse more readily in one direction than another. Lateral diffusion can make it difficult to detect (visualize) deep defects, especially those located under shallower ones. Artifacts can be reduced by thresholding timegrams but this may hide small defects. The effectiveness of thermal tomography in detecting impact damage (cracks/delaminations) in composites has been confirmed by numerous experiments.",
keywords = "Composite, Impact damage, Thermal testing, Thermal tomography",
author = "Vavilov, {Vladimir P.} and Kuimova, {Marina V.}",
year = "2019",
month = "1",
day = "1",
doi = "10.1007/s10921-018-0540-y",
language = "English",
volume = "38",
journal = "Journal of Nondestructive Evaluation",
issn = "0195-9298",
publisher = "Springer New York",
number = "1",

}

TY - JOUR

T1 - Dynamic Thermal Tomography of Composites

T2 - A Comparison of Reference and Reference-Free Approaches

AU - Vavilov, Vladimir P.

AU - Kuimova, Marina V.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Dynamic thermal tomography is a technique that allows the display of “slices” of solids by analyzing the evolution of surface temperature as a function of time. This paper presents the principles of one-sided thermal tomography using reference points and also introduces a technique of thermal tomography that does not require the use of reference point. The diffusion nature of heat conduction in solids causes lateral diffusion, which modifies and complicates the heat flow that is needed to detect defects. In the case of anisotropic composite materials the heat will diffuse more readily in one direction than another. Lateral diffusion can make it difficult to detect (visualize) deep defects, especially those located under shallower ones. Artifacts can be reduced by thresholding timegrams but this may hide small defects. The effectiveness of thermal tomography in detecting impact damage (cracks/delaminations) in composites has been confirmed by numerous experiments.

AB - Dynamic thermal tomography is a technique that allows the display of “slices” of solids by analyzing the evolution of surface temperature as a function of time. This paper presents the principles of one-sided thermal tomography using reference points and also introduces a technique of thermal tomography that does not require the use of reference point. The diffusion nature of heat conduction in solids causes lateral diffusion, which modifies and complicates the heat flow that is needed to detect defects. In the case of anisotropic composite materials the heat will diffuse more readily in one direction than another. Lateral diffusion can make it difficult to detect (visualize) deep defects, especially those located under shallower ones. Artifacts can be reduced by thresholding timegrams but this may hide small defects. The effectiveness of thermal tomography in detecting impact damage (cracks/delaminations) in composites has been confirmed by numerous experiments.

KW - Composite

KW - Impact damage

KW - Thermal testing

KW - Thermal tomography

UR - http://www.scopus.com/inward/record.url?scp=85057046977&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85057046977&partnerID=8YFLogxK

U2 - 10.1007/s10921-018-0540-y

DO - 10.1007/s10921-018-0540-y

M3 - Article

VL - 38

JO - Journal of Nondestructive Evaluation

JF - Journal of Nondestructive Evaluation

SN - 0195-9298

IS - 1

M1 - 2

ER -