Bridge natural frequency estimation by extracting the common vibration component from the responses of two vehicles

2017 ◽  
Vol 150 ◽  
pp. 821-829 ◽  
Author(s):  
T. Nagayama ◽  
A.P. Reksowardojo ◽  
D. Su ◽  
T. Mizutani
Keyword(s):  
Natural Frequency ◽  
Frequency Estimation ◽  
The Common

scholarly journals Design and Application of Flexible Diaphragm Couplings to Industrial-Marine Gas Turbines

1973 ◽  
Author(s):  
N. B. Rothfuss
Keyword(s):  
Computer Modeling ◽  
Gas Turbine ◽  
Natural Frequency ◽  
Gas Turbines ◽  
Power Transmission ◽  
Flexible Diaphragm ◽  
Industrial Gas Turbines ◽  
The Common ◽  
Design And Application

This paper discusses the common needs of different industrial-marine gas turbine systems for flexible power transmission coupling shafts and shows how the flexible diaphragm coupling has been successfully applied to such gas turbines as the TPM FT-4, G. E.’s LM2500 and several others. Most aircraft derivatives and the larger industrial gas turbines require lightweight, maintenance-free, quiet flexible couplings. The diaphragm coupling will fill this need if properly designed and applied. Materials and methods of making preliminary natural frequency calculations and computer modeling of the diaphragm coupling are also discussed.

Risk Estimation for Common Consumer Products

1986 ◽  
Vol 30 (6) ◽  
pp. 556-560 ◽  
Author(s):  
Douglas J. Brems
Keyword(s):  
Frequency Estimation ◽  
Risk Estimation ◽  
Product Category ◽  
Consumer Products ◽  
Recall Task ◽  
Estimation Task ◽  
Memory Problems ◽  
The Common ◽  
Accident Scenarios ◽  
The Individual

This paper reports a study of risk estimation for common consumer products. Subjects estimated injury frequencies and recalled/identified accident scenarios. While performance on the frequency estimation task highlighted a surprising ability to assess relative levels of risk very quickly, the scenario recall task showed severe errors in judgment. In the frequency estimation task, estimates that were made within 2 seconds of category presentation were just as accurate as those made after lengthy analysis. In the scenario recall task, subjects could recall or generate only about 40 percent of the common accident scenarios associated with each product category, and they overestimated their own ability to recall scenarios. When asked about specific scenarios that they had failed to identify, subjects cited both awareness and memory problems. These findings are discussed with reference to a model of risk perception in which the individual uses a readily accessible base of knowledge for assessing risks.

762 Natural frequency estimation of rolling tire from excitation tests at contact area

2010 ◽  
Vol 2010 (0) ◽  
pp. _762-1_-_762-6_
Author(s):  
Nobutaka TSUJIUCHI ◽  
Takayuki KOIZUMI ◽  
Fumiya NAKAMURA ◽  
Masami MATSUBARA ◽  
Koji MATSUYAMA
Keyword(s):  
Natural Frequency ◽  
Contact Area ◽  
Frequency Estimation
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