accelerometer measurement Articles
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Ambient Vibration Testing of a Dam, Canada - Case Study
The measurements and analysis presented here are performed by Professor Carlos Ventura, University of British Columbia, Vancouver, Canada. This case consider measurements conducted on a Canadian dam. The dam is 130 m long and 58 m high, and built in 1930. The measurements were conducted using an 8-channel measurement system. The sensors were Kinemetrics Episensor, forced balanced accelerometers. ...
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Ambient Vibration Testing of a Bell Tower, Switzerland - Case Study
The measurements and analysis presented here are performed by Dr. Reto Cantieni, RCI Dynamics, Switzerland. This case consider measurements conducted on the bell tower of the St. Peter & Paul church in Zürich, Switzerland. The measurements were conducted using a LMS Pimento data acquisition system. The sensors were PCB 93B31 accelerometers. The measurement campaign was divided into four ...
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Using Accelerometer Data in Proactive Maintenance of Roads
In proactive maintenance of roads, road condition is followed regularly. The key to this strategy is to react to any detected flaws in road condition before they turn into more severe damages. One of the newest techniques is using 3D-accelerometers, which have already been used for the past ten years on Road Doctor Survey Van (RDSV) and Road Doctor Maintenance Controller (RDMC) vehicles. Modern ...
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How to ensure successful acceleration enveloping
Following the interest shown in our recent blog discussing acceleration enveloping, the sophisticated signal processing technique that helps to pinpoint bearing failure at an early stage, we thought it would be a good idea to explain how to successfully implement it. There are several factors that ensure you can achieve the best possible results, these include: Select your accelerometers ...
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Dynamic Behavior of the Bumpy Road Shaking Table System
Vibration tests were performed on the “bumpy road shaking table” system at the Cambridge University Geotechnical Centrifuge to investigate its dynamic behavior under operating conditions. In these tests, steel plates of known weights were fastened onto the base of the model container. The container was then subjected to “earthquake motions” simulated by the shaking table system and the ...
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How Remote Sensing Can Save Time & Money - Roads & Bridges
A 2014, Department of Transportation report finds that to maintain the condition of U.S. highways and bridges at 2010 levels through the year 2030, between $65.3 billion and $86.3 billion per year would be required. A suburb in the greater St. Louis area has recently been searching for ways to investigate their roadways in an objective manner that will assist in repair or replace decisions as ...
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Distributed monitoring on world longest Hong Kong - Zhuhai - Macao bridge - Case Study
The Dewesoft EtherCAT data acquisition devices have already become standard in distributed, industrial monitoring applications. But when we are talking about monitoring the HongKong - Zhuhai - Macao bridge, “distributed” word enters a new dimension. INTRODUCTION With a total length of 50 km, the Hong Kong-Zhuhai-Macao Bridge (HZMB) is regarded as the longest sea bridge in the world. ...
By DEWESoft
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Hand-Arm Vibration - You MUST know your numbers
Measuring an individuals’ exposure to vibration has never been more important as despite the Control of Vibration at Work legislation being in force since 2005, the reported incidences of HAVS and the number of fines issued (and cost!) has increased. The Regulations state that ‘To protect employees from Hand Arm Vibration Syndrome (HAVS), and to comply with the Vibration Regulations, ...
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Modal Analysis of the Heritage Court Tower, Canada - Case Study
The measurements and analysis presented here are performed by Professor Carlos Ventura, University of British Columbia, Vancouver, Canada. The building considered is the so-called Heritage Court Tower, which is located in downtown Vancouver, British Columbia, Canada. It is a relatively regular 15-storey reinforced concrete shear core building. The building is located on top of an underground ...
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HAV mis-measurement – to no standards whatsoever…
Misunderstanding Hand Arm Vibration monitoring marketing material can put hands and safety policies at risk. Caveat emptor. We are regularly asked about new vibration measurement technology, particularly re the latest hand-held, glove or wrist mounted transducers that are presented as the latest assessment improvements. Whilst they may be useful tools, unfortunately some claims have been ...
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Transportation Data Logger with GPS Tracking: MSR175plus for shock and climate
Shock transport logger· 2 acceleration sensors ±15 g and ±200 g· temperature, humidity, air pressure and light sensors · stores 2 million total readings· GPS/GNSS receiver The tamper-proof MSR175plus GPS data logger seamlessly records critical transport events such as shocks, jolts and their geographical position. The robust data logger not only monitors ...
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Fourth generation SediMeter
The SediMeter™ SM4 has the same sensor as SM3 for beload transport, erosion and sediment accumulation; plus nephelometric turbidimeters for suspended sediment transport; plus an accelerometer for detecting energy levels and for conditions based monitoring (CBM); plus UV anti-fouling; plus a fluorescence meter; plus a light meter for good measure. SM4 has the same SediMeter™ sensor as ...
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Opening the envelope on bearing vibration
A sophisticated signal processing technique can help to pinpoint bearing failure at an early stage. Chris Hansford, Managing Director at Hansford Sensors, explains. Experienced operators can often tell if a machine is not working properly, on the basis that is does not ‘sound right’. The same principle can be applied – using modern electronics – to identify the exact ...
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Successful trunk main correlations in Australia, the land of long pipes - Case study
The Aquasscan TM Successfully locates leaks at distances over 1KM in Sydney. The Gutermann Aquascan (Trunk Main) correlator provided a series of high performance correlations in trials performed in Sydney, Australia. Sydney Water provided a 1.2 KM of 600mm OD Steel trunk main for a series of tests to be performed to evaluate the performance. The testing was administered by Veolia Water & ...
By Gutermann AG
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Structural Health Monitoring the S101 Highway Bridge, Austria - Case Study
The information described in this case study is by courtesy of the European research projects “Integrated European Industrial Risk Reduction System (IRIS)” and “Internet based Structural Monitoring System (ISMS)”. Special thanks to H. Wenzel (VCE), M. Döhler (Inria), L. Mevel (Inria) and C.E. Ventura (UBC). Objective 1 This case study demonstrates the use of the ...
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Operational transfer path measurements and analysis - Case Study
As a developer of in-wheel powertrain, Elaphe Propulsion Technologies Ltd. has to make sure that it’s powertrain does not emit excessive vibrations, that will result in structure-borne noise. Since vehicle suspension is typically not considered to also perform as a motor insulation system, there is a lack of knowledge on specific vibration insulation properties, especially in higher ...
By DEWESoft
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The Use of IST Recording Devices by NASA Goddard Space Flight Center
The Mission Focus of Code 230 NASA Goddard Space Flight Center’s (GSFC) Logistics and Transportation Management Branch, also known inside the Center as Code 230, is responsible for transporting delicate scientific instruments, satellites and spacecraft for NASA GSFC flight projects to both national and international launch sites. Engineering, Transportation, and Logistics specialists ...
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Sensors for structural health monitoring
With recent advancements in Sensor technology, Structural Health Monitoring (SHM) systems have been developed and implemented in various civil structures such as bridges, buildings, tunnels, power plants, and dams. Many advanced types of sensors, from wired to wireless sensors, have been developed to continuously monitor structural condition through real-time data collection. However, there ...
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