Results 161 to 170 of about 222,018 (214)
Review of Scientific Instruments, 2019 The design of a two-color pyrometer is described, allowing not only measurement of the temperature of a single flying luminous particle with sizes from submicron to millimeters but also the 3D reconstruction of its flight trajectory, the determination of its real velocity, size, frequencies of oscillations of its radiation intensities, and the type of ...
Mikhail N. Larichev +3 more
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CIRP Annals, 2008
Abstract A new type of pyrometer is developed, in which two optical fibers are used to accept and transmit the infrared energy. These two fibers are connected using a non-contact fiber coupler. In turning, the incidence face of one optical fiber which is embedded in a rotating workpiece accepts the infrared rays radiated from the cutting tool and ...
T. Ueda, M. Sato, A. Hosokawa, M. Ozawa
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Abstract A new type of pyrometer is developed, in which two optical fibers are used to accept and transmit the infrared energy. These two fibers are connected using a non-contact fiber coupler. In turning, the incidence face of one optical fiber which is embedded in a rotating workpiece accepts the infrared rays radiated from the cutting tool and ...
T. Ueda, M. Sato, A. Hosokawa, M. Ozawa
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A new wavelength selection criterion for two-color pyrometer interfered with participating media
Infrared Physics & Technology, 2018Abstract Two-color pyrometry is well established and widely applied to surface temperature measurements. However, its accuracy degrades significantly when the transmission path between the object surface and the pyrometer is full of high concentration participating media, which attenuates the surface radiation signal to the pyrometer.
Yunwei Huang +6 more
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Investigation of Temperature at Tool-Chip Interface in Turning Using Two-Color Pyrometer
Journal of Manufacturing Science and Engineering, 2002A technique for measuring temperature at the interface between a cutting tool and a chip is developed. A two-color pyrometer with fused fiber coupler is applied to the temperature measurement of the tool-chip interface in dry and wet turning. By using this pyrometer, it is possible to measure the temperature of a very small object without emissivity ...
Mahfudz Al Huda +3 more
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Measurement, 2020
Abstract Cutting temperature in machining process has received extensive attention due to its significant influence on tool life and workpiece quality. Research on real-time monitoring of the cutting temperature still faces many challenges, including rapidly changing temperature, high temperature gradient, limited installation space, and flowing ...
Jinghui Han +8 more
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Abstract Cutting temperature in machining process has received extensive attention due to its significant influence on tool life and workpiece quality. Research on real-time monitoring of the cutting temperature still faces many challenges, including rapidly changing temperature, high temperature gradient, limited installation space, and flowing ...
Jinghui Han +8 more
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Calibration of a two-color pyrometer with reference wavelength method
Annual Meeting Optical Society of America, 1989The concept of reference wavelength is introduced for calibration of a two-color pyrometer. With the reference wavelength method, an analytical formula of the ratio temperature for the two-color pyrometer is derived. A two-color pyrometer is constructed with a silicon photodiode and two narrowband interference filters (12-nm FWHM, 800- and 900-nm peak ...
Jae Won Hahn +3 more
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Near-infrared two-color pyrometer for determining ignition temperatures of metals and metal alloys
Review of Scientific Instruments, 1985A two-color pyrometer has been designed, constructed, and used to measure the ignition temperatures of metals and metal alloys. Cylindrical metal and metal alloy specimens were ignited by a focused cw CO2 laser beam in a cool, static, pure oxygen environment.
Ke Nguyen, Melvyn C. Branch
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Combustion Science and Technology, 2018
A novel method and the appropriate instrumentation for the measuring of temperature profiles and attenuation coefficients in a combustion chamber of a coal-fired power plant are described.
Milentije Lukovic +5 more
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A novel method and the appropriate instrumentation for the measuring of temperature profiles and attenuation coefficients in a combustion chamber of a coal-fired power plant are described.
Milentije Lukovic +5 more
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Review of Scientific Instruments, 2001
A two-color pyrometer has been developed to measure the temperature of surfaces with unknown emissivities during high speed turning processes. Quartz fibers enable measurements at locations with limited optical access. The sensitivity of the pyrometer has to be high enough to measure temperatures down to 300 °C of an aluminum alloy with an emissivity ...
B. Müller, U. Renz
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A two-color pyrometer has been developed to measure the temperature of surfaces with unknown emissivities during high speed turning processes. Quartz fibers enable measurements at locations with limited optical access. The sensitivity of the pyrometer has to be high enough to measure temperatures down to 300 °C of an aluminum alloy with an emissivity ...
B. Müller, U. Renz
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AIP Conference Proceedings, 2003
A two‐color pyrometer has been developed to measure the temperature of metallic surfaces with unknown or varying emissivities in manufacturing processes, e. g. the chip temperature during turning. The absolute temperature uncertainty has been analyzed for metallic surfaces with various surface properties for the pyrometer wavelengths 1.7 and 2.0 μm ...
B. Müller, U. Renz
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A two‐color pyrometer has been developed to measure the temperature of metallic surfaces with unknown or varying emissivities in manufacturing processes, e. g. the chip temperature during turning. The absolute temperature uncertainty has been analyzed for metallic surfaces with various surface properties for the pyrometer wavelengths 1.7 and 2.0 μm ...
B. Müller, U. Renz
openaire +2 more sources