Results 211 to 220 of about 20,977 (265)
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The mechanical pre-stressing in ultrasonic piezotransducers
Ultrasonics, 2001Composed piezotransducers submitted to mechanical pre-stressing present shifts on resonance and anti-resonance frequencies. Changes on characteristic parameters of the ceramic and in the coupling between the parts of the transducer can be the causes for this behavior. In applications where the level of pre-stressing is low (up to 50 MPa) the parameters
F J, Arnold, S S, Mühlen
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Effect of pre-stressed cable on pre-stressed mega-braced steel frame
Structural Engineering and Mechanics, 2016This study addresses the effect of pre-stressed cables on a pre-stressed mega-braced steel frame through employing static analysis and pushover analysis. The performances of a pre-stressed mega-braced steel frame and a pure steel frame without mega-braces are compared in terms of base shear, ductility, and failure mode.
Baijian Tang +3 more
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2011
This title is part of the ICE Publishing complete digital collection - helping ensure access to essential engineering content from past to present. Proceedings of a conference held in 1949, with an introductory paper by FG Thomas This title is not currently available in print.
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This title is part of the ICE Publishing complete digital collection - helping ensure access to essential engineering content from past to present. Proceedings of a conference held in 1949, with an introductory paper by FG Thomas This title is not currently available in print.
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Proceedings of the 14th International Workshop on Structural Health Monitoring, 2023
Acoustic sensors attached to pre-stressed/post-tensioned bridges are promising tools for monitoring the progression of corrosion damage in pre-stressing/post-tensioning tendons. In this study, acoustic emission signals from a pre-stressed beam containing three pre-stressed tendons that were exposed to accelerated corrosion conditions were studied.
SADEGH MAHMOUDKHANI +4 more
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Acoustic sensors attached to pre-stressed/post-tensioned bridges are promising tools for monitoring the progression of corrosion damage in pre-stressing/post-tensioning tendons. In this study, acoustic emission signals from a pre-stressed beam containing three pre-stressed tendons that were exposed to accelerated corrosion conditions were studied.
SADEGH MAHMOUDKHANI +4 more
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Reflection and transmission in pre-stressed stratified multilayers
Acta Mechanica, 2002This study is devoted to waves in multylayer anisotropic prestressed solid media. The cell of the medium is a slab within which the material properties vary continuously, whereas at the slab interfaces the material properties can suffer a jump. The field in each slab is derived, and all fields are put together via an integral equation including the ...
CAVIGLIA, GIACOMO, MORRO, ANGELO
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Experimental Study of Pre-Stress Loss of Steel Structure Strengthened with Pre-Stressed CFRP Strips
International Conference on Transportation Engineering 2009, 2009This paper focuses on the experimental study on the pre-stress losses of pre-stressing carbon fiber reinforced polymer (CFRP) plates bonded on damaged steel structures. Both pre-tensioned and post-tensioned members are theoretically and experimentally analyzed.
Huawen Ye, T. Ummenhofer, Shizhong Qiang
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Pre-stressing a Tonpilz transducer
The Journal of the Acoustical Society of America, 1995Tonpilz transducers have a center bolt to prevent the ceramic being subjected to a tensile stress during part of the alternating stress cycle. Two points in the transducer design are analyzed; one is the calculation of the peak stress (the method presented used the voltage applied to the ceramic during the transmitter pulse, and measured values of the ...
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Advanced Materials Research, 2013
According to experimental record of bridges in use, more and more damage bridges have appeared, and the most common and severe defect is the bridge damage and cracking problem, which has seriously affected the normal usage of bridges. Analyzing the disease cause of defective bridges more effectively and deeply, in order to optimize the design and ...
Xiao Jun Che, Xie Dong Zhang, Chao Yang
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According to experimental record of bridges in use, more and more damage bridges have appeared, and the most common and severe defect is the bridge damage and cracking problem, which has seriously affected the normal usage of bridges. Analyzing the disease cause of defective bridges more effectively and deeply, in order to optimize the design and ...
Xiao Jun Che, Xie Dong Zhang, Chao Yang
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BOND IN PRE-STRESSED CONCRETE.
Journal of the Institution of Civil Engineers, 1949Synopsis. Existing literature on pre-stressed concrete failed to provide sufficient information on certain points which, basically, me dependent on the bond in pre-stressed concrete. Experiments were carried out, therefore, to investigate those points by further examination of the subject of the pre-stressed-concrete bond; those experiments are ...
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