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Precision and accuracy of stress measurement with a portable X-ray machine using an area detector

Opened Access Precision and accuracy of stress measurement with a portable X-ray machine using an area detector

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Autor: Lee, Seung Yub
Ling, Jingjing
Wang, Shenge
Ramírez Rico, Joaquín
Departamento: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Fecha: 2017-02
Publicado en: Journal of Applied Crystallography, 50 (1), 131-144.
Tipo de documento: Artículo
Resumen: The use of portable X-ray stress analyzers, which utilize an area detector along with the newly adopted 'cosα' or full-ring fitting method, has recently attracted increasing interest. In laboratory conditions, these measurements are fast, convenient and precise because they employ a single-exposure technique that does not require sample rotation. In addition, the effects of grain size and orientation can be evaluated from the Debye ring recorded on the area detector prior to data analysis. The accuracy of the measured stress, however, has been questioned because in most cases just a single reflection is analyzed and the sample-to-detector distances are relatively short. This article presents a comprehensive analysis of the uncertainty associated with a state-of-the-art commercial portable X-ray device. Annealed ferrite reference powders were used to quantify the instrument precision, and the accuracy of the stress measurement was tested by in situ tensile loading on 1018 carbon steel ...
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Cita: Lee, S.Y., Ling, J., Wang, S. y Ramírez Rico, J. (2017). Precision and accuracy of stress measurement with a portable X-ray machine using an area detector. Journal of Applied Crystallography, 50 (1), 131-144.
Tamaño: 1.903Mb
Formato: PDF

URI: http://hdl.handle.net/11441/62896

DOI: 10.1107/S1600576716018914

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