chanelink logo
CHANELINK
Nederlands

Pressure sensing using dual color laser absorption spectroscopy

897
2024-03-09 13:58:51
Bekijk vertaling

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

Gerelateerde aanbevelingen

  • Important Discovery in Aluminum Alloy Laser Coaxial Fusion Additive Manufacturing

    Aluminum alloy has unique advantages such as lightweight, high strength, and excellent corrosion resistance, and is highly favored in the aerospace manufacturing field. Laser Coaxial Fusion Additive Manufacturing (LCWAM) adopts beam shaping technology, which uses wire as the deposition material to melt and stack layer by layer. Compared to traditional side axis wire feeding technology, laser coaxi...

    2024-04-29
    Bekijk vertaling

  • Precision laser manufacturer Preco appoints Jacob Brunsberg as CEO

    Recently, Preco, a leading enterprise in precision laser material processing and laser equipment manufacturing solutions, officially announced a major personnel appointment: Jacob Brunsberg, an outstanding senior manufacturing and technology management expert, has been appointed as its CEO. Mr. Brunsberg is a renowned senior manager in the field of advanced manufacturing and technology, with man...

    2024-09-23
    Bekijk vertaling

  • Research and investigate the thermal effects of 3D stacked photons and electronic chips

    Hybrid 3D integrated optical transceiver. (A, B) Test setup: Place the photon chip (PIC) on the circuit board (green), and glue the electronic chip (EIC) onto the top of the photon chip. (C) It is the cross-section of the EIC-PIC component with micro protrusions. (D) Display the mesh of the finite element model.The latest progress in artificial intelligence, more specifically, is the pressure plac...

    2023-12-09
    Bekijk vertaling

  • Shanghai Institute of Optics and Mechanics has made progress in studying the structure and properties of aluminum phosphate glass

    Recently, Hu Lili, a research team of the High Power Laser Unit Technology Laboratory of the Chinese Academy of Sciences Shanghai Institute of Optics and Fine Mechanics, used a method combining experiment, molecular dynamics simulation and quantitative structure property relationship analysis (QSPR) to study aluminum phosphate glass, and the related research results were published in the Journal o...

    2023-09-15
    Bekijk vertaling

  • E&R Engineering launches a mold cutting solution at Semicon SEA 2024

    Advanced laser and plasma solution provider E&R Engineering Corp. has confirmed that they will participate in the Semiconductor SEA 2024 event held in Kuala Lumpur, Malaysia. With 30 years of focus in the semiconductor industry, E&R has developed a wide range of plasma and laser technologies. At Semicon SEA 2024, they will showcase their latest solutions, including:Plasma Cutting - Small M...

    2024-05-20
    Bekijk vertaling