Calibration on Ruihang Daihttps://www.dairuihang.com/tags/calibration/Recent content in Calibration on Ruihang DaiHugoenWed, 01 Jan 2025 00:00:00 +0100Temperature measurement in laser–metal processing using optical sensing: Radiometric calibration and validation of a multispectral camerahttps://www.dairuihang.com/publications/2025-measurement-multispectral-calibration/Wed, 01 Jan 2025 00:00:00 +0100https://www.dairuihang.com/publications/2025-measurement-multispectral-calibration/<!-- Replace this summary with the official abstract from the journal. --> <p>This work establishes a radiometric calibration and validation methodology for a multispectral camera used in laser–metal processing. Capturing multiple spectral bands enables the simultaneous determination of absolute temperature and surface emissivity. The calibrated system reaches around 2% error for solid-state temperature measurement and accurately resolves liquid-phase temperatures during phase transition, providing a quantitative foundation for melt pool thermography in laser-based additive manufacturing.</p>