Journal ArticleDOI
Residual stress investigations on a hot-rolled plane sandwich-type composite X5 Cr Ni 18 9-C45-X5 Cr Ni 189 by means of neutron diffraction
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In this paper, the residual stresses in the three layers of a composite averaged over the layer thickness were determined by means of neutron diffraction experiments using the Fourier stress spectrometer (FSS).Abstract:
The residual stresses in the three layers of a composite averaged over the layer thickness were determined by means of neutron diffraction experiments using the Fourier stress spectrometer (FSS) at GKSS Forschungszentrum Geesthacht (Germany). For stress analysis, the lattice strains of many different Bragg reflections have to be measured in the directions along and normal to the rolling direction employed during fabrication of the composite. These results have been compared with residual stress measurements using the ring-core method (RCM) performed at the IFAM (Fraunhofer Institut fur Angewandte Materialforschung), Bremen. In addition to the stress states in the rolling and transverse directions, averaged over the whole thickness, the normal components of the stress tensor in the different layers of the composite—which are not detectable by RCM—have been investigated by neutron diffraction.read more
Citations
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Neutron diffraction methods for the study of residual stress fields
TL;DR: In this paper, a technique for the measurement of the residual stress tensor averaged over a specified volume within a component is described, which involves measurement of small changes in lattice spacing using high resolution neutron diffraction.
Proceedings ArticleDOI
Residual-stress determination by means of neuron diffraction
H.J. Prask,P.C. Brand +1 more
TL;DR: Neutron diffraction is becoming an increasingly important tool for the determination of triaxial residual stress distributions for materials science and engineering applications as discussed by the authors, and virtually all of the major neutron centers in the world have, or are planning, programs in this area.
Dissertation
The measurement of longitudinal residual stresses in unidirectional glass fibre reinforced plastic
TL;DR: In this paper, a method for estimating residual stresses in an unloaded unidirectional laminate of glass fibre reinforced plastic is presented, which exploits the substantial reduction in the modulus of a thermoset matrix above its glass transition temperature, Tg.
Book ChapterDOI
Destructive techniques in the measurement of residual stresses in composite materials: an overview
TL;DR: In this paper, the main methods that fall into the category of destructive methods are discussed in detail and the notable contributions of each method for each method is discussed in a detailed manner.
References
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Journal ArticleDOI
Berechnung der elastischen Konstanten des Vielkristalls aus den Konstanten des Einkristalls
TL;DR: In this article, anwendungsmoglichkeiten der Methode werden besprochen, in which experimentelle Vergleichswerte weichen von den berechneten etwas ab, was beweist, das die Experimente nicht den von der Theorie geforderten idealen Bedingungen genugt haben.
Neutron diffraction methods for the study of residual stress fields
TL;DR: In this paper, a technique for the measurement of the residual stress tensor averaged over a specified volume within a component is described, which involves measurement of small changes in lattice spacing using high resolution neutron diffraction.
Journal ArticleDOI
Neutron diffraction methods for the study of residual stress fields
TL;DR: In this paper, a technique for the measurement of the residual stress tensor averaged over a specified volume within a component is described, which involves measurement of small changes in lattice spacing using high resolution neutron diffraction.
Journal ArticleDOI
Temperature dependence of the elastic constants in α‐iron single crystals: relationship to spin order and diffusion anomalies
TL;DR: In this article, the temperature dependence of the elastic constants of singlecrystal iron has been measured from 25 to 900°C and a nonlinearity of temperature dependence for the three measured independent constants is associated with the degree of ferromagnetic ordering.
Journal ArticleDOI
Über die Berechnung der Elastizitätsmoduln vielkristalliner Aggregate mit Textur
TL;DR: Kroner's method of calculating the elasticity moduli of quasi-isotropic polycrystals has previously been shown to apply to aggregates of tricline poly-crystals as mentioned in this paper.