Study of error analysis and sources of uncertainty in the measurement of residual stresses by the X-Ray diffraction
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2018
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Residual Stresses
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Resumo
The aim of this work is to analyze the sources of errors inherent to the residual stress
measurement process by X-ray diffraction technique making an interlaboratory comparison to
verify the reproducibility of the measurements. For this work were machined specimens with
grinding finish, with polishing finish and to be a reference standard an iron powder was used To
verify the deviations caused by the equipment, those specimens were positioned and with the
same analysis condition, seven measurements were carried. To verify sample positioning errors,
seven measurements were performed by positioning the sample at each measurement. To check
geometry errors, measurements were repeated for the geometry Bragg Brentano and Parallel
Beams. In order to verify the reproducibility of the method, the measurements were performed in
two different laboratories and equipments. The results were statistically worked out and the
quantification the type A errors that suggests that is a significant difference between the methods
and orientation of grooves directions.
Como referenciar
CARVALHO FILHO, E.T.; MEDEIROS, J.T.N.; MARTINEZ, L.G.; PINTO, V.C. Study of error analysis and sources of uncertainty in the measurement of residual stresses by the X-Ray diffraction. In: SEEFELDT, MARC (ed.). Residual Stresses. Millersville, PA, USA: Materials Research Forum LLC, 2018. v. 6p. 75-80. (Materials Research Proceedings). DOI: 10.21741/9781945291890-13. Disponível em: http://repositorio.ipen.br/handle/123456789/29472. Acesso em: 26 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.