In this paper the fatigue phenomena of 2024 T3 aluminium alloy were studied in terms of thermal and calorimetric effects during uniaxial cyclic loading. Thermoelastic coupling sources and dissipation were separately estimated by using infrared thermal data and a local simplified form of the heat equation. The simplifications are essentially based on the assumption that the uniaxial fatigue test remains homogeneous until a macroscopic fatigue crack occurs within the gauge section of the specimen. Heat sources were then compared to predictions derived from mechanical data by assuming a linear isotropic thermoelastic behaviour of the material and by neglecting the influence of thermomechanical couplings on the hysteresis area of fatigue cycles.

Analysis of thermoelastic and dissipative effects related to the fatigue of 2024 T3 aluminium alloy / Eva Morabito, Anna; Chrysochoos, André; Dattoma, Vito; Galietti, Umberto. - In: QUANTITATIVE INFRA RED THERMOGRAPHY JOURNAL. - ISSN 1768-6733. - STAMPA. - 1:1(2004), pp. 99-116. [10.3166/qirt.1.99-116]

Analysis of thermoelastic and dissipative effects related to the fatigue of 2024 T3 aluminium alloy

Umberto Galietti
2004-01-01

Abstract

In this paper the fatigue phenomena of 2024 T3 aluminium alloy were studied in terms of thermal and calorimetric effects during uniaxial cyclic loading. Thermoelastic coupling sources and dissipation were separately estimated by using infrared thermal data and a local simplified form of the heat equation. The simplifications are essentially based on the assumption that the uniaxial fatigue test remains homogeneous until a macroscopic fatigue crack occurs within the gauge section of the specimen. Heat sources were then compared to predictions derived from mechanical data by assuming a linear isotropic thermoelastic behaviour of the material and by neglecting the influence of thermomechanical couplings on the hysteresis area of fatigue cycles.
2004
Analysis of thermoelastic and dissipative effects related to the fatigue of 2024 T3 aluminium alloy / Eva Morabito, Anna; Chrysochoos, André; Dattoma, Vito; Galietti, Umberto. - In: QUANTITATIVE INFRA RED THERMOGRAPHY JOURNAL. - ISSN 1768-6733. - STAMPA. - 1:1(2004), pp. 99-116. [10.3166/qirt.1.99-116]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/1463
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