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  • Temperatur
  • KIT Scientific Publishing  (2)
  • 2020-2024  (2)
  • 1950-1954
  • 1930-1934
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  • KIT Scientific Publishing  (2)
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  • 2020-2024  (2)
  • 1950-1954
  • 1930-1934
Year
  • 1
    facet.materialart.
    Unknown
    Influence of elevated temperatures up to 100 °C on the mechanical properties of concrete (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Experiments to characterize the effects of moisture content and temperature on the mechanical properties of concrete were conducted. Based on these experiments, a new overall material model capable of predicting the mechanical behaviour of concrete subject to elevated temperatures up to 100 °C was developed. The material model estimates the time, temperature and moisture dependency of the compressive and tensile strength, creep and shrinkage of concrete.
    Keywords: TA1-2040 ; concrete ; Temperatur ; Beton ; Schwinden ; Temperature ; strength ; Kriechen ; creep ; Festigkeit ; shrinkage ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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  • 2
    facet.materialart.
    Unknown
    Temperaturbasierte Methoden zur Bestimmung der Lebensdauer und Stabilisierung von LEDs im System (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-21
    Description: In dieser Arbeit wird einerseits die Lebensdauer der LEDs im System aus der Datenblattangabe der Hersteller und dem gemessenen Betriebspunkt in Abhängigkeit der Umgebungstemperatur berechnet. Alternativ wird die Lichtstromdegradation des Gesamtsystems über mehrere tausend Stunden gemessen und auf den L70-Wert extrapoliert. Um dabei den Messfehler aufgrund mangelnder thermischer Stabilisierung zu eliminieren, wurde eine Methode zur analytischen Beschreibung der Stabilisierung entwickelt.
    Keywords: T1-995 ; Temperatur ; Lebensdauer ; Messung ; LED ; Stabilisierung ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: German
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