Residual stress measurements and weld defects investigations by neutron diffraction

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dc.contributor.authorLi, HJen_AU
dc.contributor.authorParadowska, AMen_AU
dc.date.accessioned2021-02-16T01:15:33Zen_AU
dc.date.available2021-02-16T01:15:33Zen_AU
dc.date.issued2018-11-01en_AU
dc.date.statistics2021-02-15en_AU
dc.description.abstractWelding is a foundational aspect of all large-construction industries, ensuring strong, sustainable connections. Due to its relative operational simplicity, welding has become the most important industrial process used for manufacturing of metal parts. Also, the insertion of welding in the context of additive manufacturing (AM) make the welding knowledge to be a great importance for the development of new technologies. In welded structures residual stresses (RS) are formed primarily as the result of differential contractions which occur as the weld metal solidifies and cools to ambient temperature. Generally, RS are considerably large in layer by layer AM parts. RS have a significant effect on fracture resistance, creep and corrosion/fatigue performance and a full understanding of these stresses is desirable. Therefore, experimental measurements are essential to establish a quantitative understanding of the sign, magnitude and distribution of RS in both traditional welding and AM process. Neutron Diffraction (ND) is outstanding in its ability to obtain RS non-destructively within the subsurface and interior of components. Therefore, the angular scanning instrument KOWARI has been selected in our studies for RS measurements on many big components from industries. Welding introduces inhomogeneity and defects such as bad joint preparation, lack of fusion, solidification cracking and distortion, which have great influences on weld integrity, must be investigated and understood. With the use of DINGO neutron tomography instrument, our research conducted 3D defect measurements on welded structures. A full assessment on weld quality has been obtained.en_AU
dc.identifier.citationLi, H., & Paradowska, A. (2018). Residual stress measurements and weld defects investigations by neutron diffraction. Poster presented to the ANBUG-AINSE Neutron Scattering Symposium, AANSS 2018, Monday 19 November 2018 - Wednesday 21 November 2018, AINSE Conference Centre New Illawarra Road Lucas Heights NSW, Australia, (pp. 28). Retrieved from: https://events01.synchrotron.org.au/event/84/timetable/#20181119.detaileden_AU
dc.identifier.conferenceenddate21 November 2018en_AU
dc.identifier.conferencenameANBUG-AINSE Neutron Scattering Symposium, AANSS 2018en_AU
dc.identifier.conferenceplaceLucas Heights, NSWen_AU
dc.identifier.conferencestartdate19 November 2018en_AU
dc.identifier.pagination28en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10414en_AU
dc.identifier.urihttps://events01.synchrotron.org.au/event/84/timetable/#20181119.detaileden_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineeringen_AU
dc.subjectANSTOen_AU
dc.subjectFatigueen_AU
dc.subjectCorrosionen_AU
dc.subjectNondestructive analysisen_AU
dc.subjectOPAL Reactoren_AU
dc.subjectCrystal structureen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectPerformance testingen_AU
dc.subjectQuality controlen_AU
dc.subjectResidual stressesen_AU
dc.subjectTomographyen_AU
dc.subjectWeldingen_AU
dc.titleResidual stress measurements and weld defects investigations by neutron diffractionen_AU
dc.typeConference Paperen_AU
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