In-situ thermal analysis of intermetallic and thermite projectiles in high velocity impact experiments

Woodruff, Connor; Dean, Steven W.; Cagle, Colton; Croessmann, Charles Luke; Dubé, Pascal; Pantoya, Michelle L.

doi:10.1016/j.ijheatmasstransfer.2022.122565

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…Reactive materials, such as metal/polymer mixture [1][2][3], thermites [4][5][6], metal-hydride mixture [7][8][9] and intermetallic compounds [10][11][12], are a unique class of materials known for their ability to initiate and release substantial energy when subjected to dynamic loads. Among these, metal/polymer mixtures, exemplified by PTFE/Al, have gained prominence due to their capability to react in oxygen-free environments [13,14].…”

Section: Introductionmentioning

confidence: 99%

An approach to distinguish chemical and kinetic energy of reactive materials: PTFE/LiF as an inert substitute to PTFE/Al

Zhou,

Zhao,

Wang

et al. 2024

Propellants Explo Pyrotec

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To distinguish between the kinetic and chemical contributions in the impact of PTFE/Al, this study explores the feasibility of introducing an inert substitute for PTFE/Al by substituting aluminum (Al) with inert materials. Three specimens were fabricated through a process involving mixing, compression, and sintering of raw materials The mechanical properties of these specimens were assessed. Dynamic fragmentation tests of PTFE/Al and PTFE/LiF specimens were performed. These results further substantiate the potential of PTFE/LiF as an inert alternative to PTFE/Al, the two materials exhibit comparable fragmentation distribution characteristics. A preliminary exploration of the energy release in both materials was conducted via vented chamber calorimetry tests. The findings reveal that, at an impact velocity of roughly 650 m/s, only 66.9 % of the materials were deposited into the chamber, with a mere 17.8 % being initiated, about 88.9 % of the total deposited energy results from the chemical reaction energy within the PTFE/Al materials. Importantly, this method demonstrates promise for further application in energy release analysis experiments for various PTFE/Al‐based reactive materials. These findings are beneficial for evaluating the energy release characteristics of reactive fragments on typical targets and lay the foundation for refining energy release models of such materials in future research.

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Section: Introductionmentioning

confidence: 99%

An approach to distinguish chemical and kinetic energy of reactive materials: PTFE/LiF as an inert substitute to PTFE/Al

Zhou,

Zhao,

Wang

et al. 2024

Propellants Explo Pyrotec

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show abstract

“…The CCD/CMOS image sensor is also an integrating device, just like the infrared focal plane array detector, has been widely used in the field of visible light imaging due to its advantages in price and frame frequency. The colorimetric temperature measuring equipment developed based on the colorimetric temperature measurement principle has been verified and applied in the fields of high temperature measurement such as metallurgy, combustion and explosion [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Thermography of surface temperature of explosion fireball by visible and infrared band

ZHANG

Kong

2023

International Conference on Optical and Photonic Engineering (icOPEN 2022)

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Surface temperature of explosive fireball is vital for the evaluation of the thermal damage ability. In order to improve the spatial and temporal resolution of the measurement, based on the thermal radiation law, the principle and limitation of the equipments used to measure the surface temperature of explosive fireball are analyzed, such as infrared thermography camera, photoelectric pyrometer etc. Based on CMOS image sensor and its built-in filter array, a temperature measurement method based on visible band is proposed to realize the imaging measurement of the surface temperature of explosive fireball. An experimental verification was carried out by using infrared thermography camera and a high-speed camera based pyrometer, the experimental results show that there are differences in the shape of fireball measured by different temperature measuring systems, the reason of the result is analyzed. The research has laid a foundation for the construction of infrared and visible band combined temperature measuring system.

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Efficient removal of tar employing dolomite catalyst in gasification: Challenges and opportunities

Varjani

2022

Science of The Total Environment

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In-situ thermal analysis of intermetallic and thermite projectiles in high velocity impact experiments

Cited by 4 publications

References 24 publications

An approach to distinguish chemical and kinetic energy of reactive materials: PTFE/LiF as an inert substitute to PTFE/Al

An approach to distinguish chemical and kinetic energy of reactive materials: PTFE/LiF as an inert substitute to PTFE/Al

Thermography of surface temperature of explosion fireball by visible and infrared band

Efficient removal of tar employing dolomite catalyst in gasification: Challenges and opportunities

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