Fatigue analysis of aluminum drill pipes

An experimental program was performed to investigate the fundamental fatigue mechanisms of aluminum drill pipes. Initially, the fatigue properties were determined through small-scale tests performed in an optic-mechanical fatigue apparatus. Additionally, full-scale fatigue tests were carried out wit...

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Bibliographic Details
Published in:	Materials research (São Carlos, São Paulo, Brazil) Vol. 8; no. 4; pp. 409 - 415
Main Authors:	Plácido, João Carlos Ribeiro, Miranda, Paulo Emílio Valadão de, Antoun Netto, Theodoro, Pasqualino, Ilson Paranhos, Miscow, Guilherme Farias, Pinheiro, Bianca de Carvalho
Format:	Journal Article
Language:	English
Published:	ABM, ABC, ABPol 01-12-2005 Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects:	aluminum drill pipes ENGINEERING, CHEMICAL fatigue MATERIALS SCIENCE, MULTIDISCIPLINARY METALLURGY & METALLURGICAL ENGINEERING stress concentration factors stress concentration factors aluminum drill pipes fatigue
Online Access:	Get full text
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Summary:	An experimental program was performed to investigate the fundamental fatigue mechanisms of aluminum drill pipes. Initially, the fatigue properties were determined through small-scale tests performed in an optic-mechanical fatigue apparatus. Additionally, full-scale fatigue tests were carried out with three aluminum drill pipe specimens under combined loading of cyclic bending and constant axial tension. Finally, a finite element model was developed to simulate the stress field along the aluminum drill pipe during the fatigue tests and to estimate the stress concentration factors inside the tool joints. By this way, it was possible to estimate the stress values in regions not monitored during the fatigue tests.
ISSN:	1516-1439 1980-5373 1516-1439
DOI:	10.1590/S1516-14392005000400009