Abstract— <p>An experimental setup for studying the process of initiating combustion of high-energy materials is considered. The setup combines two combustion initiation options, synchronized with a two-channel visualization system based on a copper bromide vapor laser monitor. The choice is between contact initiation by contacting the test material with a heated electrical conductor or laser initiation using a solid-state laser with a wavelength of 635 nm and fiber optic radiation output. In both initiation modes, the moment of the start of the exposure is synchronized with the moment of the start of recording by the Evercam F 1000-16-C high-speed cameras, which record images in their own glow and images of the laser monitor. Laser monitoring combined with direct video recording allows for simultaneous examination of the sample surface in a selected area and flame spread across the entire sample. When working as part of a laser monitor, both cameras operate as slaves. A special feature of the external synchronization of Evercam cameras is the need to form trains of sync pulses synchronized with the radiation pulses of the brightness amplifier and starting at the moment of the start of the exposure. In this work, synchronization is implemented using fiber optic communication lines and the STM32F103C8T6 microcontroller board. The possibility of using the designed setup for studying the initiation and high-temperature combustion of a thermite mixture based on Al–CuO is shown.</p>

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Laboratory Setup for Studying Combustion of High-Energy Materials with High-Speed Visualization

  • F. A. Gubarev,
  • L. Yu. Davydova,
  • A. A. Zykov

摘要

Abstract—

An experimental setup for studying the process of initiating combustion of high-energy materials is considered. The setup combines two combustion initiation options, synchronized with a two-channel visualization system based on a copper bromide vapor laser monitor. The choice is between contact initiation by contacting the test material with a heated electrical conductor or laser initiation using a solid-state laser with a wavelength of 635 nm and fiber optic radiation output. In both initiation modes, the moment of the start of the exposure is synchronized with the moment of the start of recording by the Evercam F 1000-16-C high-speed cameras, which record images in their own glow and images of the laser monitor. Laser monitoring combined with direct video recording allows for simultaneous examination of the sample surface in a selected area and flame spread across the entire sample. When working as part of a laser monitor, both cameras operate as slaves. A special feature of the external synchronization of Evercam cameras is the need to form trains of sync pulses synchronized with the radiation pulses of the brightness amplifier and starting at the moment of the start of the exposure. In this work, synchronization is implemented using fiber optic communication lines and the STM32F103C8T6 microcontroller board. The possibility of using the designed setup for studying the initiation and high-temperature combustion of a thermite mixture based on Al–CuO is shown.