A Comparison Of The Use Of Critically Refracted Longitudinal Waves And Magnetic Barkhausen Noise For Stress Measurement In Api 5l X70 Steel

dc.creatorPereira
dc.creatorPaulo; Franco Grijalba
dc.creatorFreddy Armando; Santos
dc.creatorAuteliano Antunes
dc.date2016
dc.datenov
dc.date2017-11-13T13:56:42Z
dc.date2017-11-13T13:56:42Z
dc.date.accessioned2018-03-29T06:10:02Z
dc.date.available2018-03-29T06:10:02Z
dc.identifierJournal Of Strain Analysis For Engineering Design . Sage Publications Ltd , v. 51, p. 563 - 571, 2016.
dc.identifier0309-3247
dc.identifier2041-3130
dc.identifierWOS:000386010800004
dc.identifier10.1177/0309324716663815
dc.identifierhttp://journals.sagepub.com/doi/abs/10.1177/0309324716663815
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329919
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1366944
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionAccording to acoustoelastic theory, ultrasonic wave velocity varies as a function of the state of stress in a body. In ferromagnetic materials, stress alters magnetic domain walls created by cyclic magnetic excitation and affects the amplitude of magnetic Barkhausen noise signals. In this work, both these properties are used to measure different levels of stress in specimens of API 5L X70 steel. Time of flight of ultrasonic critically refracted longitudinal (L-cr) waves and magnetic Barkhausen noise are measured and compared using three parameters: sensitivity, linearity, and dispersion. The results show that while magnetic Barkhausen noise is much more sensitive to variations in stress, the time of flight values fit a linear curve better. Also, for the ultrasonic technique, dispersion between the curves for the different specimens is lower. For both techniques, measurement dispersion in the specimens when no stress is applied is high. The findings of this study can be used to indicate the limits within which each technique can be used and to help decide when it is more appropriate to use one technique rather than the other.
dc.description51
dc.description8
dc.description563
dc.description571
dc.descriptionNational Council for Scientific and Technological Development (CNPq) [479939/2012-8, 472745/2012-3]
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherSage Publications LTD
dc.publisherLondon
dc.relationJournal of Strain Analysis for Engineering Design
dc.rightsfechado
dc.sourceWOS
dc.subjectUltrasonic Waves
dc.subjectMagnetic Barkhausen Noise
dc.subjectStress Evaluation
dc.subjectCritically Refracted Longitudinal Waves
dc.subjectAcoustoelasticity
dc.titleA Comparison Of The Use Of Critically Refracted Longitudinal Waves And Magnetic Barkhausen Noise For Stress Measurement In Api 5l X70 Steel
dc.typeArtículos de revistas


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