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A Study on the accu...
A Study on the accuracy of Thermography-based Temperature measurement in Powder-fed directed energy deposition
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- Kledwig, Christian (författare)
- Development Department, Sauer GmbH LASERTEC, DMG MORI AG, Pfronten, 87459, Germany
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- Hofer, Markus (författare)
- Development Department, Sauer GmbH LASERTEC, DMG MORI AG, Pfronten, 87459, Germany
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- Reisacher, Martin (författare)
- Development Department, Sauer GmbH LASERTEC, DMG MORI AG, Pfronten, 87459, Germany
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- Brückner, Frank (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling,Additive Manufacturing and Printing, Fraunhofer Institute for Material and Beam Technology IWS, Dresden, 01277, Germany
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- Bliedtner, Jens (författare)
- SciTec Department, Ernst-Abbe-Hochschule Jena, Jena, 07745, Germany
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- Leyens, Christoph (författare)
- Additive Manufacturing and Printing, Fraunhofer Institute for Material and Beam Technology IWS, Dresden, 01277, Germany. Institute of Materials Science, Technische Universität Dresden, Dresden, 01062, Germany
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- Engelska.
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Ingår i: 20th CIRP Conference on Electro Physical and Chemical Machining. - : Elsevier. ; , s. 35-41
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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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
- Due to continuous development and increasingly deep understanding of the additive process, directed-energy deposition (DED) is becoming more and more interesting for industrial use. However, both the number of influencing factors and the process complexity, still require well-trained operators who can monitor and understand the machine tools. In order to facilitate the operators and to enable longer unattended processes, higher process safety, reliable monitoring systems and closed-loop controller are required. For example, despite a large number of investigations, the monitoring and control of the temperature distribution within the work piece still poses a big challenge.This study focusses on workpiece temperature measurement using a thermal imaging camera that observes the entire machining area. In order examine the measurement error caused by different viewing angles (φ = 0 … 75°), object temperatures (T = 333 … 1073K), surface conditions (welded and milled) and materials (316L, Inconel 718 and CuAl10) commonly used in DED, several approaches were followed using a thermal camera.It was found that surface condition and material cause the greatest measuring errors (up to +325K |−453K).). However, the measuring errors can be significantly reduced by suitable selection of the emissivity, so that it is possible to measure even the milled CuAl10 surface at a known viewing angle with a measuring error of +13.3% |−10.9%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- directed energy deposition
- laser metal deposition
- laser cladding
- thermal imaging
- temperature distribution
- process monitoring
- Produktionsutveckling
- Manufacturing Systems Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)