MESSAGER, A.; JUNET, A.; PALIN LUC, Thierry; BUFFIERE, J.-Y.; SAINTIER, Nicolas; RANC, N.; EL MAY, M.; GAILLARD, Y.; KING, A.; BONNIN, A.; NADOT, Y.

doi:10.1111/ffe.13140

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MESSAGER, A.
Unité de recherche Maladies Métaboliques et Micronutriments [U3M]

JUNET, A.

PALIN LUC, Thierry

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Fatigue and Fracture of Engineering Materials and Structures. 2020, vol. 43, n° 3, p. 558-567

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This work presents a new ultrasonic fatigue testing device for studying the initiation and propagation mechanisms of internal microstructurally short fatigue cracks using in situ synchrotron tomography. Its principle is described as well as the method used for automatically detecting crack initiation and its subsequent growth. To promote internal crack initiation, specimens containing internal casting defects were tested between the high cycle and very high cycle fatigue regimes (107-109 cycles). Preliminary results show the ability of this new device to initiate an internal microstructurally short crack in a reasonable testing time and monitor its growth.< Leer menos

Palabras clave en inglés

Fatigue of materials

X-ray tomography

Ability testing

Aluminum alloys

Short fatigue cracks

Fatigue testing

Plastic deformation

Synchrotron radiation

Tomography

Ultrasonic testing

Casting defect

In-situ synchrotrons

Internal shorts

Crack propagation

Crack initiation

Ultrasonic fatigue testing

Very high cycle fatigue

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In situ synchrotron ultrasonic fatigue testing device for 3D characterisation of internal crack initiation and growth

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