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Emissivity estimati...
Emissivity estimation for high temperature radiation pyrometry on Ti–6Al–4V
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- Hagqvist, Petter, 1986- (författare)
- Högskolan Väst,Avd för automation och datateknik,PTW
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- Sikström, Fredrik, 1971- (författare)
- Högskolan Väst,Avd för elektro- och automationsteknik,PTW
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- Christiansson, Anna-Karin, 1947- (författare)
- Högskolan Väst,Avd för elektro- och automationsteknik,PTW
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- Engelska.
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Ingår i: Measurement. - : Elsevier BV. - 0263-2241 .- 1873-412X. ; 46:2, s. 871-880
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The paper demonstrates a versatile procedure suitable for industrial implementation of temperature measurement on a hot titanium alloy. The driving force has been the need for an accurate temperature measurement during additive manufacturing using laser welding technology where Ti–6Al–4V-wire is melted. The challenges consider both industrial constraints and the varying emissivity of the surface. Measurements makes use of a narrow bandwidth spot radiation pyrometer and a calibration procedure for estimation of the surface temperature through spectral emissivity estimation. The theoretical results are validated through experiments. A number of difficulties in radiation temperature measurements for metals with varying surface properties are discussed; especially the case of surface oxidation. The uncertainty in temperature reading due to the uncertainty in the emissivity estimate is established along with a model that qualitatively describes surface oxidation. The procedure is expected to be useful for several manufacturing applications where it is important to control high temperatures.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Nyckelord
- Ti-6Al-4V; Temperature; Emissivity; Radiation pyrometer; Laser metal deposition; Calibration
- WIL
- Work-integrated Learning
- Physics
- Fysik
- Work Integrated Learning
- Arbetsintegrerat lärande
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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