2002
DOI: 10.1088/0957-0233/13/10/311
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Non-destructive control of industrial materials by means of lock-in thermography

Abstract: Lock-in thermography is employed for non-destructive control to evaluate several aspects of industrial interest: inclusions of spurious materials in both carbon-epoxy and glass-epoxy, impact damage and delaminations occurring around holes during drilling in carbon-epoxy, bonding improvements in Certran® after plasma treatments and steel modifications after welding. Phase images are analysed to find quantitative information for industrial characterization.

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Cited by 93 publications
(57 citation statements)
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References 14 publications
(17 reference statements)
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“…Em contraste, a termografia ativa requer fontes externas de estimulação de calor (Kee et al, 2012;Rehman et al, 2016), pode até ser sub-dividida de acordo com a natureza da estimulação como: Pulsed, Lock-in, Pulsed-Phase, entre outros (Maldague, 2001). A aplicação das técnicas de termografia ativa estão relacionadas com a detecção de defeitos em metais, monitoramento de processos industriais, entre outros (Meola et al, 2002;Montanini, 2010;Yuanlin et al, 2015;Zhao et al, 2017). A termografia infravermelha tem dois tipos de medições e análises.…”
Section: Metodologia E Análiseunclassified
“…Em contraste, a termografia ativa requer fontes externas de estimulação de calor (Kee et al, 2012;Rehman et al, 2016), pode até ser sub-dividida de acordo com a natureza da estimulação como: Pulsed, Lock-in, Pulsed-Phase, entre outros (Maldague, 2001). A aplicação das técnicas de termografia ativa estão relacionadas com a detecção de defeitos em metais, monitoramento de processos industriais, entre outros (Meola et al, 2002;Montanini, 2010;Yuanlin et al, 2015;Zhao et al, 2017). A termografia infravermelha tem dois tipos de medições e análises.…”
Section: Metodologia E Análiseunclassified
“…Of various active thermographic methods , Pulse Thermography (PT) [3] and continuous wave Lock-in Thermography (LT) [8][9][10][11][12] are widely used. In PT, a shortduration high peak power stimulus is applied over test object and the captured temporal temperature response is used to reveal the details of the hidden defects (time period of stimulus vary from few milliseconds for high conductive materials to a few seconds for low conductive materials).…”
Section: Introductionmentioning
confidence: 99%
“…Each technique has its own advantage and is chosen over the others depending on the type of defect or material to be analyzed [9,16,17]. Lock-in thermography (LIT) provides information about thermo physical properties of materials, detect defects and determine their size, depth and nature [18,19]. respect to defect size, depth and thickness [3].…”
Section: Introductionmentioning
confidence: 99%