chanelink logo
CHANELINK
Türkçe

Pressure sensing using dual color laser absorption spectroscopy

376
2024-03-09 13:58:51
Çeviriyi gör

The research team led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences recently designed a concentration independent pressure sensing technology for high-temperature combustion diagnosis. This method is based on dual color laser absorption spectroscopy.

The results of this study have been published in Optics Letters.
Aircraft engines are transitioning towards high-temperature and high-pressure combustion to improve thermodynamic efficiency. Pressure is a key parameter for monitoring engine performance and diagnosing engine faults. However, traditional contact pressure sensors can disrupt combustion flow and are limited by the temperature tolerance of the sensor material.

The researchers of this study designed a non-contact pressure sensing technology for high-temperature environments and tested it at temperatures up to 1300 K. This study mainly addresses the challenge of considering the influence of molecular concentration on gas pressure measurement in such an environment.

Researchers have found that by connecting double absorption lines to widen the collision line width, concentration variables can be alleviated. This breakthrough enables researchers to achieve concentration independent pressure measurements.

To verify this discovery, considering that the main product of hydrocarbon fuel combustion systems is H2O, the team used double absorption lines of H2O near 1343 nm and 1392 nm in a precisely designed heating absorption cell. They each achieved 50 μ S and 3% time resolution and pressure measurement uncertainty.

Source: Laser Net

İlgili öneriler

  • Mazak will showcase high-speed fiber lasers on Tube 2024

    Yamazaki Mazak designed the FT-150 fiber laser tube processing machine for high-speed cutting of small and medium-sized diameter pipes, for use in Tube 2024. The machine tool will be controlled by a new type of pipe cutting CNC, which will be exhibited for the first time in Europe.Tube 2024 will be held from April 15th to 19th in Dusseldorf, Germany. Mazak will be exhibited at booth C17 in Hall 5....

    2024-03-16
    Çeviriyi gör

  • Shanghai Optics and Machinery Institute has made progress in the development of picosecond reflectors based on composite materials

    Recently, the High Power Laser Element Technology and Engineering Department of the Shanghai Institute of Optics and Mechanics, Chinese Academy of Sciences, has made progress in the research of picosecond reflectors based on composite materials. The relevant research results are titled "Hybrid material based mirror coatings for picosecond laser applications" and published in Optics and Laser Techn...

    2024-06-12
    Çeviriyi gör

  • Multiple international laser companies continue to increase investment in the Chinese market

    In early spring of 2025, China's laser industry once again attracted the attention of global laser giants, ushering in a new wave of international investment boom.After several global laser giants accelerated their layout in China in 2024, in February 2025, Carl Zeiss from Germany and Bystronic from Switzerland, two global giants in the optical and laser fields, also announced significant expansio...

    02-15
    Çeviriyi gör

  • GZTECH selected as a reserve "golden seed" enterprise for listing in Hubei Province

    Recently, relevant departments officially released the list of reserve "golden seed" enterprises for listing in Hubei Province for 2024-2025. Following being selected as reserve "golden seed" enterprises for listing in Donghu High tech Zone and Wuhan City in 2024, Wuhan GZTECH Co., Ltd. (hereinafter referred to as "GZTECH") once again stood out from many candidate enterprises with its outstanding ...

    05-19
    Çeviriyi gör

  • Visual platforms bring new perspectives to optical research

    The advanced testing platform of Liquid Instruments is now available for Apple Vision Pro, providing optical researchers with the first interactive 3D testing system. By integrating the Moku system with camera based visual devices, the efficiency of the laboratory has been significantly improved.The Moku platform utilizes the processing power of field programmable gate arrays (FPGAs) to provide a ...

    2024-05-23
    Çeviriyi gör