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Fracture evaluation of square transversal section specimens subjected by torsional cyclic loads

Published online by Cambridge University Press:  29 November 2019

Pavel Almaguer-Zaldivar ,
Patricia Zambrano-Robledo  and
José Martínez-Grave-de-Peralta
Pavel Almaguer-Zaldivar*
Affiliation:
Universidad de Holguín. Avenida XX Aniversario s/n. Piedra Blanca, Holguín, Cuba, CP 80700
Patricia Zambrano-Robledo
Affiliation:
Universidad Autónoma de Nuevo León, Avenida Manuel L. Barragán, No. 4904, Monterrey, México, CP 64290
José Martínez-Grave-de-Peralta
Affiliation:
Universidad de Holguín. Avenida XX Aniversario s/n. Piedra Blanca, Holguín, Cuba, CP 80700
*
*(Email: [email protected])
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Abstract

In this work, the evaluation of the growth of cracks in specimens of square cross section requested by symmetrical cyclic torsion moments was performed. The specimens were manufactured from AISI 1015. A pre-crack was machined on one side to induce the crack growth. The crack length with the increase in the number of cycles was measured by means of penetrating liquids method. By means of the Finite Element Method, the stress – strain state of the specimens was simulated. The displacements in the crack tip were determined to apply the technique of the Crack Tip Opening Displacements to calculate the Stress Intensity Factor. The calculated Stress Intensity Factor was related to the dimensions of the specimen and the size of the crack to propose an equation for the shape function.

Keywords

simulationfracturefatiguelifecyclesteel
Type
Articles
Information
MRS Advances , Volume 4 , Issue 55-56: International Materials Research Congress XXVIII , 2019 , pp. 3061 - 3068
Copyright
Copyright © Materials Research Society 2019 

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