A novel physics methodology based on compact emission spectroscopy in the VNIR (0.4–0.9 μm) ranges for plasma shock layer/material temperature determinations and surface emissivity evaluations in the VNIR – LWIR (7–14 μm) ranges during atmospheric re-entry by PWT facility

Savino, L.; Martucci, Alessandro; Vecchio, Antonio Del; Cesare, M. De

doi:10.1016/j.infrared.2020.103353

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…In summary, aerospace missions demand better performing TPS materials, which can be obtained with more sensitive, accurate and precise measurements of TPS performance in a realistic environment like PWTs. For this, we propose a new technique for sample recession rate determination based on the SLI of radioactive tracers, which evetually will be employed together with the novel emissivity-free Infra-Red (IRt) technology for surface temperature estimate [21][22][23][24][25] also under development in the collaboration between the CIRA and DMF.…”

Section: Discussionmentioning

confidence: 99%

“…It is also worth noting that the SLI technique employed together with the IRt allows the establishment of a more precise correlation between sample surface degradation and temperature, which can be a strong indication for TPS material developments. In addition, the SLI technique together with compact emission spectroscopy [24] to measure temperature information, could also be employed for in-flight tests by implanting 7 Be ions at different points of the external surface of the space vehicle and arranging detectors on the inside; this will further increase the accuracy of TPS performance and the security of space vehicles and their crew.…”

Section: Discussionmentioning

confidence: 99%

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Validation of a novel technique with radioactive implanted ions for material recession rate estimate

Rapagnani¹,

Cesare²,

Buompane³

et al. 2021

J. Phys. D: Appl. Phys.

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Durability tests of thermal protection system (TPS) materials for space vehicles is of paramount importance in developing TPS materials. The limits of the presently used techniques and the need for higher accuracy and precision demand new reliable and more sensitive measurement methods. In this paper we present the validation of a new on-line and non intrusive technique to estimate the TPS material recession rate which exploits the surface layer implantation of radioactive 7Be ions and the measurement of its characteristic γ-rays during the recession test.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Validation of a novel technique with radioactive implanted ions for material recession rate estimate

Rapagnani¹,

Cesare²,

Buompane³

et al. 2021

J. Phys. D: Appl. Phys.

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“…In the last years, a wide variety of techniques have been developed in order to obtain accurate and precise temperature measurements. Intrusive techniques, including the use of thermocouples, gardon gauges, pressure sensors, and non-intrusive techniques through infra-red (IR) pyrometers, spectroscopy [2], and IR cameras [3] have been used for the monitoring of the phenomena in the hypersonic motion conditions.…”

Section: Introductionmentioning

confidence: 99%

Advances in Material Wide Range Temperature Determination by Dual-Color Emissivity Free Methodology in Long-Mid-near Infrared Ranges at Non-stationary Conditions

et al. 2021

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Dual color emissivity free methodology by thermography allows to obtain 2D (two-dimensional) temperature maps by using local grey body hypotheses and narrowband filters. By using a suitable pair of filters is possible to obtain the ratio between two thermal camera input signals that depend only on the temperature and not on the emissive properties of the investigated surface. The aim of this concise review paper is to summarize and discuss the developments and applications from long- to mid-near infrared ranges and in a wide range of temperature values of the dual-color thermographic technique that has been analysed through the use of an analytical model based on the integration of Planck’s law and attenuated with the transmission curves of sensors, optics, filters, and attenuators during the last years. Moreover, the applicability to the non-stationary temperature conditions and finalized to the materials mainly used in the aerospace plasma wind tunnel (PWT) re-entry are shown.

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Standard thermography vs free emissivity dual color novel CIRA physics technique in the near-mid IR ranges: Studies for different emissivity class materials from low to high temperatures typical of aerospace re-entry

Carolo

Savino

Palumbo

et al. 2020

International Journal of Thermal Sciences

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A novel physics methodology based on compact emission spectroscopy in the VNIR (0.4–0.9 μm) ranges for plasma shock layer/material temperature determinations and surface emissivity evaluations in the VNIR – LWIR (7–14 μm) ranges during atmospheric re-entry by PWT facility

Cited by 8 publications

References 32 publications

Validation of a novel technique with radioactive implanted ions for material recession rate estimate

Validation of a novel technique with radioactive implanted ions for material recession rate estimate

Advances in Material Wide Range Temperature Determination by Dual-Color Emissivity Free Methodology in Long-Mid-near Infrared Ranges at Non-stationary Conditions

Standard thermography vs free emissivity dual color novel CIRA physics technique in the near-mid IR ranges: Studies for different emissivity class materials from low to high temperatures typical of aerospace re-entry

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