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Titlebook: Notch Effects in Fatigue and Fracture; Guy Pluvinage,Marenglen Gjonaj Book 2001 Springer Science+Business Media Dordrecht 2001 Metall.allo

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發(fā)表于 2025-3-25 05:02:57 | 只看該作者
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發(fā)表于 2025-3-25 13:05:02 | 只看該作者
Fatigue Strength of Welded Joints by the Local Strain Method, field close to the weld toe, which is considered to be responsible for the material fatigue damage. A fatigue life curve in terms of local strain amplitude has been found for welded joints made of structural steel under stress ratios from -1 to 0.5. In this work the general validity of this approac
24#
發(fā)表于 2025-3-25 17:33:51 | 只看該作者
pparent dynamic deficiency in the static demand system, as revealed by positively autocor-related residuals in the estimated system. Later developments of dynamic systems encountered difficulties in introducing dynamics without violating some of the theoretical restrictions of a demand system, in pa
25#
發(fā)表于 2025-3-25 20:16:35 | 只看該作者
G. Pluvinagelof Bolin of the Agricultural University in Ultuna, Sweden and by Professor Karl Iohan Weckman, of the University of Helsinki, Finland. A pilot study was carried out by Bengt Assarsson, which in 1989 led to a successful application for a research grant from the NKJ (The Nordic Contact Body for Agric
26#
發(fā)表于 2025-3-26 02:20:29 | 只看該作者
A. J. Krasowskyrofessor Olof Bolin of the Agricultural University in Ultuna, Sweden and by Professor Karl Iohan Weckman, of the University of Helsinki, Finland. A pilot study was carried out by Bengt Assarsson, which in 1989 led to a successful application for a research grant from the NKJ (The Nordic Contact Body
27#
發(fā)表于 2025-3-26 05:10:09 | 只看該作者
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發(fā)表于 2025-3-26 20:11:44 | 只看該作者
L. S. Niu,Q. Y. Hu,W. Wangthe number of potential unobserved heterogeneities increases with the dimension of the data. The chapter examines the properties of least squares type estimators, including theWithin estimator, under different specifications of the error components and different correlation assumptions with the regr
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