Feasibility study of a novel load detection system for train doors based on the acoustic characteristics of elastic tubes

2021 ◽  
pp. 113021
Author(s):  
Kenta Hori ◽  
Soshi Shimomura ◽  
Marie Tabaru
Keyword(s):  
Feasibility Study ◽  
Detection System ◽  
Acoustic Characteristics ◽  
Load Detection ◽  
Elastic Tubes

scholarly journals Transmission of Impact Vibration on Concrete and Mortar Sheets

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Carlos Morón ◽  
Alfonso García ◽  
Daniel Ferrández ◽  
Víctor Blanco
Keyword(s):  
Building Materials ◽  
Detection System ◽  
Experimental Results ◽  
Acoustic Characteristics ◽  
Vibration Detection ◽  
Alternative System ◽  
Theoretical Predictions ◽  
The One ◽  
The Impact ◽  
Impact Vibration

The present work exposes an alternative system for detecting vibrations generated by impact on concrete and mortar sheets. In order to carry out the tests it is necessary to implement a system of measurement different than the one proposed by the current UNE EN 140-7. This system consists of an amplifier and a striking device that is also able to measure the deformation of the material once the impact has been produced. This system is able to detect variations in transmission of vibration at the same frequency between the various building materials employed, after establishing a relationship between the theoretical predictions and the experimental results. Thus, this system could be used as a vibration detection system and as an alternative method of standardization of materials against their acoustic characteristics.

Load detection system for automatic storage apparatus

1985 ◽  
Vol 77 (6) ◽  
pp. 2203-2203
Author(s):  
Peter W. Hartman ◽  
Patsy R. Brown
Keyword(s):  
Detection System ◽  
Load Detection

Automated Measurement System for Room Acoustics – an Initial Feasibility Study

2015 ◽  
Vol 40 (3) ◽  
pp. 419-428
Author(s):  
Bartłomiej Borkowski ◽  
Marek Pluta
Keyword(s):  
Feasibility Study ◽  
Mechanical Design ◽  
Three Dimensional ◽  
Measurement Procedure ◽  
Automated System ◽  
General Idea ◽  
Room Acoustics ◽  
Acoustic Characteristics ◽  
Control Procedures ◽  
And Control

AbstractCurrently used procedures in room acoustics measurements are not automated. Particularly in medium-sized and large areas they require a lot of time and intensive labour which directly translates into an increase in the measurement cost. Introduction of an automated system would increase efficiency of the measurements, and therefore could present both practical and scientific benefit. The paper presents initial feasibility study for designing a system that permits the measurement of selected acoustic parameters for any choice of three-dimensional grid of measurement points throughout the volume of the room. The system will utilize an autonomous probe attached to a blimp, and will be able to measure and analyze acoustic characteristics of the rooms. The article discusses the initial choices of the system elements, starting from the general idea, through the mechanical design and control procedures, the software that controls positioning and flying of the probe, up to the automation of the measurement procedure and its possible impact on the acoustic field.

FIRST FEASIBILITY STUDY FOR EXL WITH PROTOTYPE DETECTORS AT THE ESR AND DETECTOR SIMULATIONS

2009 ◽  
Vol 18 (02) ◽  
pp. 524-530 ◽  
Author(s):  
◽  
N. KALANTAR-NAYESTANAKI ◽  
H. MOEINI ◽  
M. MAHJOUR-SHAFIEI ◽  
F. AKSOUH ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Detection System ◽  
Hydrogen Gas ◽  
Gas Jet ◽  
The Future ◽  
Simulation Results

This contribution presents some results from the first feasibility measurement performed at GSI using a 350 MeV/nucleon 136 Xe beam and a Hydrogen gas-jet target. In this feasibility study, one element of every possible detection part of the future EXL detection system was investigated. In addition, simulation results for EXL setup will be presented.

Investigation and Modification of Frequency Response Function Using Digital Fourier Analysis for High Speed Dynamic Testing Facility

2009 ◽  
Author(s):  
Chandrashekhar K. Thorbole ◽  
Keshavanarayana S. Raju
Keyword(s):  
Frequency Response ◽  
Frequency Domain ◽  
Response Function ◽  
Time Domain ◽  
Frequency Response Function ◽  
Detection System ◽  
Structural Response ◽  
Wave Form ◽  
Data Set ◽  
Load Detection

The increasing application of composites in the aviation and automobile industry demands a better understanding of composite material behavior under high loading rate. This shall provide a better insight of actual loads on occupants while preserving livable crashworthy structure. In this study, a high stroke rate MTS servo-hydraulic testing machine is used to characterize the behavior of composite materials at high strain rates. At higher stroke rates, the output of the load detection system acquired by the load cell deviates from the true load-time wave form of the specimen. This is due to the convolution of the structural response of the detection system with the true characteristic of the specimen. To identify the true nature of the specimen load-time behavior, the de-convolution of the detection system response is necessary to restore the specimen characteristic wave form closer to its true behavior. The convolution of data set in the time domain is a time consuming process which explains the benefit of using the frequency domain; as the convolution in time domain corresponds to multiplication in the frequency domain. This process requires the transformation of the time domain data to frequency domain data via Fast Fourier Transform (FFT). In the frequency domain the complex division of the Fourier transfer of the detection system output with frequency response function of the detection system shall provide the true complex input characteristic. This paper elaborates the methodology utilized for obtaining the Frequency Response Function (FRF) of the load detection system using digital Fourier analysis with a single input/output data set. This also emphasizes precautions and guidelines for improving results with FFT to obtain true FRF measurements of the load detection system. The FRF obtained is successfully used to identify the actual specimen wave form characteristic. This is achieved by extracting the structural response of the load detection system from the load cell output.

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