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. Experimental tests and numerical simulation on stiffened pure aluminum shear panels, Proc. of the 10th Int. Conf. on Civil, Structural and Environmental Engineering Computing , Rome, Italy, 2005. Formisano A., Mazzolani F

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varying amplitudes and frequencies were obtained. 3 Experimental test The experimental procedure consists of testing the MR damper (shown in Fig. 7 ) in INSTRON 8800 (shown in Fig. 8 ) under the same periodic excitation, which the mathematical model in

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Nowadays the most modern and economical bridges are designed as composite structures with orthotropic plates. In a traditionally designed composite bridge the trapezoidal, longitudinal stiffener is attached, welded to the cross girder web and to the bottom flange of the main girder. However in recent composite bridges with orthotropic plates designed by the UVATERV Co. the cross girder web and the trapezoidal, longitudinal stiffeners are not connected. This is a very important improvement, since in this way the amount of cutting and welding work can be reduced, however more importantly there is no need to consider the fatigue of the welds between the longitudinal stiffener and the cross girder web. On the other hand the disadvantage of this design that the plate-buckling phenomenon of the free edge must be taken into account. This paper studies the new orthotropic plate by the experimental tests.

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In the year 2000, at the MARC V conference, the first results obtained at constant count rates with so-called "zero dead time counting" (ZDT) as implemented in ORTEC's DSPECPLUS ® were presented. In this paper, further experiments are described that were performed to establish how the DSPECPLUS ® performs at varying count rates. At the same time, the experiments were designed to demonstrate the possible inadequacy of the dual spectrum approach sometimes used to solve the problem of non-Poisson counting statistics encountered in loss-free counting, and to test the "variance spectrum" alternative offered by the DSPECPLUS ® . It is concluded that the DSPECPLUS ® performs with good accuracy at dead times lower than 90%, even when count rates vary. It is also concluded that the dual spectrum approach indeed is inadequate. Finally, it is shown that the "variance" spectrum approach provides the correct uncertainties to be used in the treatment of LFC or ZDT data.

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The paper presents results of the analysis of the lateral-load response of an existing RC structure seismically upgraded by means of C-FRP. The structure was tested “as-is” under monotonic lateral loading conditions. It failed by a column-type collapse mechanism. The structure was repaired and upgraded by means of C-FRP. The structure has been tested again by a cyclic load test. Results demonstrate the successful implementation of C-FRP with a significant improvement of stiffness, strength and lateral displacement capacity of the upgraded structure. Finally a numerical study has been started with the aim to correctly capture the experimental results.

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years many experimental tests and research projects have been performed to improve RHFBs behavior and resistance. Many ways of forming and configurations of cross section were discussed with experimental, numerical and theoretical studies, where buckling

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The development and experimental testing of a new instrumental neutron activation analysis (INAA) Advance Prediction Computer Program (APCP) is described for activation by high-intensity, short-duration reactor pulses. Also presented are the results of extensive experimental testing of the APCP for epithermal INAA. Brief mention is made of other forms of the APCP not yet completed, but in various stages of development.

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This paper describes further development and experimental testing of the INAA Advance Prediction Computer Program (APCP). Copies of the APCP written in BASIC-PLUS are finally ready for distribution. Experimental tests with four reference materials are described. The program is extremely useful as a quide to optimum conditions, sample sizes, elements detectable, and INAA lower limits, of detection for any sample matrix of only approximately known major and minor elemental composition. Additional developments in progress are mentioned.

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The paper analyses the behavior of concentrically braced steel structures equipped with friction dampers in the bracing. Experimental tests were conducted in order to determine the parameters of this type of damper needed to construct and implement an equivalent hysteretic model to be used in numerical simulations. The experimental tests were conducted on two series of braces having different design concepts: the first series of tests on braces designed to remain in elastic domain and a second series of tests on braces that undergo plastic deformations but only after the damper reaches its full displacement capacity. The results were compared with the experimental data on braces without dampers.

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Results are presented of a series of experimental tests performed to determine the influence of matrix characteristics on the leaching mechanism of copper aluminium oxychloride immobilized into cement matrices. The objective of this research was to investigate the leaching mechanism of copper as a constituent of copper aluminium oxychloride (CAOX).

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