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Crack Initiation D etection of Fretting F atigue by Thermography. Title. Saosometh Chhith Promoters: W. De Waele , P. De Baets . Fretting Mechanism. Q>F r. F r = f P. Q<F r. F r = f P. P. P. Q. Q. slip. slip. Macroscopic motion. Microscopic motion. Gross Sliding.

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  1. Crack Initiation Detection of Fretting Fatigue by Thermography Title SaosomethChhith • Promoters: W. De Waele, P. De Baets Crack Initiation Detection of Fretting Fatigue by Thermography– SaosomethChhith

  2. Fretting Mechanism Q>Fr Fr=f P Q<Fr Fr=f P P P Q Q slip slip Macroscopic motion Microscopic motion Gross Sliding Fretting Crack Initiation Detection of Fretting Fatigue by Thermography– SaosomethChhith

  3. Concept • Heat sources under fretting fatigue: • Fretting (Friction): the temperature is stabilized if the friction coefficient is constant. • Fatigue load (Thermoelasticity): the temperature is stabilized after a certain cycle. Crack Initiation Detection of Fretting Fatigue by Thermography– SaosomethChhith

  4. Results of Thermography σ P P σ Q Q P Q P Q Crack Initiation Detection of Fretting Fatigue by Thermography– SaosomethChhith

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