Corrigendum to “Characterization of display pyrotechnic propellants: Colored light”. [Appl. Therm. Eng. 110 (2017) 1066–1074]

Ambekar, Anirudha; Kim, Min Soo; Yoh, Jack J.

doi:10.1016/j.applthermaleng.2021.117390

Cited by 2 publications

(9 citation statements)

References 4 publications

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“…In addition to color‐emitting species, molecular species such as OH, CO, O 2 , CH, and H 2 O, which are often present in pyrotechnic flames, can also contribute to the flame's inherent background radiation intensity but not to the color [6a]. The blackbody radiation or background radiation can shift from infrared to red/orange to blue, based on the extent of combustion from the pyrotechnic and the resultant increase in temperature.…”

Section: Colored Light Productionmentioning

confidence: 99%

“…Before different color compositions are discussed and compared, it is important to understand flame colorimetry and the associated terms. Flame colorimetry or measurement of color in a pyrotechnic flame is often carried out using spectrophotometric techniques such as spectrometers, spectrophotometers, colorimeters, and luminance meters, and supported by theoretical analysis of chemical and radiative processes [6a, 7, 9, 15]. More recent studies are also utilizing digital cameras, in conjunction with image processing techniques [6a], to quantify color [16], temperature [17], and flame luminosity [18].…”

Section: Color Producing Compositionsmentioning

confidence: 99%

“…Flame colorimetry or measurement of color in a pyrotechnic flame is often carried out using spectrophotometric techniques such as spectrometers, spectrophotometers, colorimeters, and luminance meters, and supported by theoretical analysis of chemical and radiative processes [6a, 7, 9, 15]. More recent studies are also utilizing digital cameras, in conjunction with image processing techniques [6a], to quantify color [16], temperature [17], and flame luminosity [18]. The performance of color‐generating compositions is often measured using different parameters such as dominant wavelength (DW), spectral purity (SP), and luminous intensity per mass (candela/g), of which, DW and SP are the two most important.…”

Section: Color Producing Compositionsmentioning

confidence: 99%

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A review of colored light production by pyrotechnic materials

Kanitkar,

Haynes,

Sabolsky

et al. 2023

Propellants Explo Pyrotec

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Pyrotechnics are a unique set of materials because they can be formulated to control combustion behavior to elicit desired effects such as light emission, smoke formation, and noise. The ability to enhance and control light emission is particularly desirable for entertainment purposes, as well as military applications. Designing such materials for high color purity at a specific wavelength requires an understanding of the different factors that affect their performance. This review will cover the various aspects of color production, including light emission mechanisms, components of a color composition, and key parameters that determine the optical wavelength band for these compositions. Additionally, because conventional pyrotechnic formulations are known to produce toxic emissions, less hazardous and sustainably formulated pyrotechnics for color production will also be reviewed. Finally, a short perspective is presented on the possible extension of pyrotechnic applications beyond conventional, civilian, and military purposes.

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Section: Colored Light Productionmentioning

confidence: 99%

Section: Color Producing Compositionsmentioning

confidence: 99%

Section: Color Producing Compositionsmentioning

confidence: 99%

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A review of colored light production by pyrotechnic materials

Kanitkar,

Haynes,

Sabolsky

et al. 2023

Propellants Explo Pyrotec

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“…The camera was an off-the-shelf instrument and was not calibrated. A photocell with an attached green-colour filter was also used to measure the Comp 14 is similar to the green formulation from Ambekar et al [37] intensity of the light produced by the burning pellet. Although the photocell was not calibrated, a standard composition pellet (Comp 14) was run in every experiment before every sample set was run, and the measured intensities were adjusted according to the intensity of the standard pellet.…”

Section: Colour Testsmentioning

confidence: 99%

“…This could have been due to a different decomposition behaviour of H 3 BO 3 , causing it to not form BO 2 but B 2 O 3 instead. [53] Sabatini [3] BaN U.S. Army In-service M195 562.3 64.8 Sabatini [3] BaN Formulation with KNO 3 , epoxy binder 561.9 52.0 Sabatini [3] Tris(2,2,2-trinitroethyl)borate Formulation without KNO 3 mut with B 4 C, Mg, Paraffin 561 86.0 Sabatini [3] Amorphous Boron, B Formulation with KNO 3 559.3 55.0 Sabatini et al [28] BaN Formulation with NH 4 ClO 4 , shellac 548 65.6 Juknelevicius et al [22] BaN Formulation a with KClO 4 , Mg, polyvinyl chloride (PVC), and parlon 564 68 b Ambekar et al [37] a Comp 14 is a similar green-colour formulation from Ambekar et al [37] b Theoretical value.…”

Section: Effect Of Additive (Boric Acid)mentioning

confidence: 99%

Development of green‐colour‐emitting pyrotechnics as a core for 3D temperature imaging sensors inside coal boilers

et al. 2022

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Efficiency in the control operation of the boilers for coal and coal with biomass can be further improved if the flue gas temperature distribution can be better characterized. This is very difficult in these harsh environmental systems, where spatially resolved measurements are nearly impossible with solid‐state sensors. In this work, we evaluate the development of pyrotechnic compounds that would serve as the basis for a novel optical mapping of the temperature inside coal boilers. For this purpose, various green‐colour‐emitting pyrotechnics using BaCl2 · 2H2O and Ba(NO3)2 as the green light source were prepared, as this colour offers a distinct signal from the combustion‐based background in the boiler. These pyrotechnics were characterized using thermogravimetric analysis (TGA) and X‐ray diffraction (XRD) and tested using a flat‐flame burner. Furthermore, the composition was varied to evaluate the effect of different metal fuels such as Sn, Co, and Mg, as well as various binders such as ethylcellulose, shellac, parlon, and PVC on green light emission. The emission intensity and the apparent ignition temperature were strongly dependent on the metal type, with Mg showing higher intensities. On the other hand, the effect of the binder showed that the ignition behaviour, emission intensity, and spectral purity were influenced by the nature and exothermicity of the binder. The addition of other potential green light‐producing materials, such as boric acid, increased the intensity of emission by 17% for a BaCl2 · 2H2O‐based composition. This study identified prospective compositions with intense and bright green‐colour emissions that have high spectral purities.

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Corrigendum to “Characterization of display pyrotechnic propellants: Colored light”. [Appl. Therm. Eng. 110 (2017) 1066–1074]

Cited by 2 publications

References 4 publications

A review of colored light production by pyrotechnic materials

A review of colored light production by pyrotechnic materials

Development of green‐colour‐emitting pyrotechnics as a core for 3D temperature imaging sensors inside coal boilers

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