Fast and easy radiometric calibration method integration time insensitive for infrared thermography

Poissenot-Arrigoni, Corentin; Marcon, Bertrand; Rossi, Frédéric; Fromentin, Guillaume

doi:10.1016/j.infrared.2023.104741

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…To enhance accuracy, an independent radiometric calibration was performed for each pixel and for each filter of the filter wheel, as described by [25]. This calibration was carried out using an Ametek Landcal P1200B black body source (AMETEK Land, Berwyn, PA, USA).…”

Section: Methodsmentioning

confidence: 99%

In-Situ Pixel-wise Emissivity Measurement Using a Multispectral Infrared Camera

Poissenot-Arrigoni,

Marcon,

Rossi

et al. 2023

J. Imaging

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In the thermography process, accurately determining emissivity is crucial to obtain precise temperature measurements as it enables the conversion of radiometric values to absolute temperatures. However, assessing emissivity is not a straightforward task as it depends on various other parameters. Traditional methods for measuring emissivity often involve costly materials and cannot be carried out simultaneously with infrared image acquisition. This article presents a method for obtaining pixel-wise emissivity using data from a multispectral infrared camera. Consequently, this method allows for direct emissivity measurement during infrared camera acquisition without the need for additional materials or experiments.

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Section: Methodsmentioning

confidence: 99%

In-Situ Pixel-wise Emissivity Measurement Using a Multispectral Infrared Camera

Poissenot-Arrigoni,

Marcon,

Rossi

et al. 2023

J. Imaging

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“…According to the Table 3, the spatial resolution of the visible path is 0.81 µm.pixel − 1 and 1.25 µm.pixel − 1 for the infrared path. Based on [22], an integration time insensitive and pixel wise radiometric calibration has been implemented. A CI System SR-800R-7A-ET-HU black body source has been used to obtain the experimental data required to implement the radiometric calibration, as shown of the Fig.…”

Section: Images Characterisation and Processingmentioning

confidence: 99%

“…Then, the calibration curve is a straight line. Therefore, only few experimental points are necessaries to create a global calibration on large temperatures range (this point being widely affronted in [22]). The Fig.…”

Section: Images Characterisation and Processingmentioning

confidence: 99%

In situ thermomechanical analysis of the primary shear zone in Inconel 718 orthogonal cutting

Poissenot-Arrigoni,

Marcon,

Berthel

et al. 2024

Int J Adv Manuf Technol

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Inconel 718 is a challenging alloy to machine, commonly employed in the aeronautic and energy industries. There is a continual need to enhance our understanding of its cutting processes to improve its machining applications. This research presents an in situ analysis of the kinematic and thermal elds behaviour of a serrated chip, during orthogonal cutting in the primary shear zone. This study involves a speci c self-designed optical system enabling the simultaneous acquisition of both a visible high-speed CCD and an infrared cameras. A particular attention is brought to evaluate the accuracy of the whole optical system to measure the thermomechanical elds in the unfavourable peculiar cutting conditions among such: high strain rates, texture evolution, strong thermal gradients, very narrow observation window... The description of the digital image correlation technic within the visible range and the infrared images post-processing are both affronted, and their limitations exposed. To conclude, a deeper characterisation of the primary shear zone shape is done from the kinematic and the thermal point of views showing that, at least under the employed cutting conditions and for Inconel 718 alloy, the primary shear zone width exhibits no thickness despite the literature.

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In situ thermomechanical analysis of the primary shear zone in Inconel 718 orthogonal cutting

Poissenot-Arrigoni,

Marcon,

Berthel

et al. 2023

Preprint

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Inconel 718 is a challenging alloy to machine, commonly employed in the aeronautic and energy industries. There is a continual need to enhance our understanding of its cutting processes to improve its machining applications. This research presents an in situ analysis of the kinematic and thermal fields behaviour of a serrated chip, during orthogonal cutting in the primary shear zone. This study involves a specific self-designed optical system enabling the simultaneous acquisition of both a visible high-speed CCD and an infrared cameras. A particular attention is brought to evaluate the accuracy of the whole optical system to measure the thermomechanical fields in the unfavourable peculiar cutting conditions among such: high strain rates, texture evolution, strong thermal gradients, very narrow observation window... The description of the digital image correlation technic within the visible range and the infrared images post-processing are both affronted, and their limitations exposed. To conclude, a deeper characterisation of the primary shear zone shape is done from the kinematic and the thermal point of views showing that, at least under the employed cutting conditions and for Inconel 718 alloy, the primary shear zone width exhibits no thickness despite the literature.

show abstract

Fast and easy radiometric calibration method integration time insensitive for infrared thermography

Cited by 5 publications

References 18 publications

In-Situ Pixel-wise Emissivity Measurement Using a Multispectral Infrared Camera

In-Situ Pixel-wise Emissivity Measurement Using a Multispectral Infrared Camera

In situ thermomechanical analysis of the primary shear zone in Inconel 718 orthogonal cutting

In situ thermomechanical analysis of the primary shear zone in Inconel 718 orthogonal cutting

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