Monitoring the depth penetration of dyes in poly (ethylene terephthalate) films using a two layer based photoacoustic model

Olenka, L.; Medina, A. N.; Baesso, Mauro Luciano; Bento, A. C.; Rubira, Adley F.

doi:10.1590/s0103-97332002000300010

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…The method has also been used to investigate two-layer systems using the effective sample model. [10][11][12][13][14][15][16] This model treats the heatcoupling between the two layers using the analogy between thermal and electrical resistances widely used in heat transfer problems. The thermal resistance between the two layers is considered as effective and the problem is decoupled for each layer.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Heat Diffusion Properties of Rubberized Two-Layer Systems Using Open Photoacoustic Cell Spectroscopy

et al. 2017

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We applied the open photoacoustic cell method operating at high frequency as an efficient and highly precise tool for the measurement of thermal properties of rubberized two-layer systems. The heat-coupling between the two layers is treated using the analogy between thermal and electrical resistances widely used in heat transfer problems. The thermal resistance between the two layers is considered effective and the problem is decoupled for each layer. Measurements are performed in two-layer samples of aluminum foil coated with layers of rubberized paint with different thicknesses. Thermal diffusivity and thermal conductivity are determined for the paint. The results are retrieved from the thermal resistance model assuming the effective thermal diffusivity of the composite material.

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Section: Introductionmentioning

confidence: 99%

Characterization of Heat Diffusion Properties of Rubberized Two-Layer Systems Using Open Photoacoustic Cell Spectroscopy

et al. 2017

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“…9 Based upon the effective sample model widely used in heat transfer problems, the OPC has been used to investigate thermal properties of two-layer systems of variable thickness. [10][11][12][13][14][15] This investigation makes the technique particularly interesting to investigate layered systems such as, for instance, porous catalyst layers ͑CL͒ in fuel cell devices.…”

Section: Introductionmentioning

confidence: 99%

An open-photoacoustic-cell method for thermal characterization of a two-layer system

Astrath¹,

Astrath²,

Shen³

et al. 2010

Journal of Applied Physics

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In the present work, we use an open-photoacoustic-cell ͑OPC͒ operating at high frequency to measure thermal properties of two-layer system samples. Photothermal deflection technique is also employed to measure the samples. The effective thermal diffusivity measured using the OPC method is interpreted using the concept of effective thermal resistance for a series two-layer system. The results show the reliability of the photoacoustic method for a complete thermal characterization of the samples. In addition, by varying the sample effective thickness, the thermal diffusivity and conductivity of each layer are precisely determined. The effective thermal diffusivity, thermal conductivity, and specific heat of a porous catalyst layer ͑thickness varying from 13 to 53 m͒ deposited on an aluminum foil ͑53 m in thickness͒ were thus measured and found to be ͑3.7Ϯ 0.3͒ ϫ 10 −3 cm 2 / s, ͑7.5Ϯ 0.7͒ ϫ 10 −3 W / cm K, and ͑1.6Ϯ 0.2͒ J / gK, respectively.

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Thermal and Elastic Characterization of Nanostructured Fe2O3 Polymorphs and TiO2-Coated Fe2O3 Using Open Photoacoustic Cell

et al. 2020

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Monitoring the depth penetration of dyes in poly (ethylene terephthalate) films using a two layer based photoacoustic model

Cited by 5 publications

References 11 publications

Characterization of Heat Diffusion Properties of Rubberized Two-Layer Systems Using Open Photoacoustic Cell Spectroscopy

Characterization of Heat Diffusion Properties of Rubberized Two-Layer Systems Using Open Photoacoustic Cell Spectroscopy

An open-photoacoustic-cell method for thermal characterization of a two-layer system

Thermal and Elastic Characterization of Nanostructured Fe2O3 Polymorphs and TiO2-Coated Fe2O3 Using Open Photoacoustic Cell

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