BeanAir GmbH and Ensyso Corp. entered a partnership to demonstrate their expertise, know-how and most recent technological capabilities via performing a structural health monitoring technology demonstration test which was performed at Texas A&M University’s Riverside Campus.The bridge was recently built as part of a high budget research effort performed in cooperation with the Texas Department of Transportation (TxDOT) and the Federal Highway Administration (FHWA). The objective of the research was to explore the use of slab beams that are used in a spread configuration for short span bridges and to provide appropriate design recommendations.
The test structure is a simply supported bridge which was designed and built at the edge of a runway located at the Texas A&M University Riverside Campus. It has a 46 ft 7 in. span length (from center to center of the bearing pads) and an overall width of 34 ft .The bridge superstructure has four slab beam girders spaced at 4 ft 8 in. clear spacing with prestressed concrete panels (PCPs) between the slab beams as stay-in-place (SIP) forms. The slab beam girders are standard TxDOT 5SB15 slab beams. The 4 in. thick PCPsare 8 ft long and have an overall width of 5 ft 4 in. The cast-in-place (CIP) deck thickness varies slightly along the length to accommodate the camber of the prestressed slab beams.
Slab beam girders were instrumented with wireless accelerometers, with a range of ±2g. Collected test data were compared with the ones obtained via Finite Element Analysis (FEA) following the completion of the testing activities Structure was excited with a loaded truck. Wireless accelerometer were used with a sampling rate of 10Hz up to 100Hz.
Toulon Naval Base is the second-largest naval port in France. Located on the south-east coast of the country, the base is he home port of the French Navy Mediterranean fleet.
Military antenna base stations and Radars are deployed on cliffs and covers communication with military ships. A soil subsidence of 0.05deg per year is provoked by water infiltration in the soil. A real-time monitoring system was required to monitor soil subsidence with a precise wireless inclinometer (factory precision of ±0.02° on the FS) and remotely sends alarms by email when the alarm threshold is reached
At the beginning, Grand Paris (Greater Paris) is a project to transform the Paris metropolitan area into a major world and European metropolis of the 21st century, in order to improve the living environment of the inhabitants, to correct the territorial inequalities and to build a sustainable city.
During the suburb train line (RER) in Nanterrre, the monitoring work consisted to track ground vibration on gas and water pipeline during construction work alongside the bridge structure.
The Automotive components plant is located in Warsaw – Poland, the production line is equipped with three vibrational conveyors, and four wheel blasting machines. Excessive vibration was observed on the first floor of office building near casting line. The level of human perception of vibration is described by a polish norm PN-B-02171 (similar to BS 6472:2008) , this level was was exceeded several times. People working on the first floor were complaining about excessive vibration. The target of Simdes Partner, a polish consulting group was to identify source of vibration, analyze the building structure analysis and detect presence of resonance phenomena .
During the extension of rail network close to Wembley Park tube station (London, UK), noise protection barriers were fragilized by construction work.
Wireless tiltmeter (Ref: Beandevice® 2.4GHz HI-INC Xrange) were deployed every 15 meters to prevent barrier collapsing. Configured with a survey mode, alarms are transmitted to the user when thresholds are reached.
A serious failure of pantograph can not only damage contact wires but can also inflict widespread damage on the catenary system network.
Pantographs are subject to regular inspection at rolling stock depots, but some failures are difficult to detect by the visual checks. In addition, visual check at the depots cannot directly help to quickly detect pantograph failures in operation. A cost-effective and real-time monitoring system during train operation was required by the railway operator.
BeanAir wireless shock sensors (Ref: Beandevice® 2.4GHz AX-3DS) were used to monitor in real-time pantograph defects during train operation.
Thanks to BeanAir Smart Shock Detection Mode (SSD), the wireless monitoring system can wakeup on a shock trigger and transmit an alarm notification to field workers.
During the extension of Paris suburb line RER-C, it was urgent to monitor railway sleepers due to construction works at several train stations in the North-West of Paris.
The main target was to monitor soil stability and to notify in real-time the field workers if deformation was observed on rails. The monitoring system was deployed between 2010 and 2014, a long battery life was required by the rail operator.
Wireless inclinometers were used with external primary cell for a longer battery life (Ref: Beandevice® HI-INC Xtend ).
On Nuclear power plant, cooling tower rejects heat to the atmosphere through a cooling of a water stream to a lower temperature. Fill packs provides a large surface area for evaporative cooling to take place. It’s located beneath the water distribution layer and above the sump of the cooling tower.
Anti-Legionnela packing are used and impregnated with a non-leaching biocide that lasts for the lifetime of the packing, and provides additional protection against bacteria. The fill packs weight need to be monitored in real-time and cleaned during annual maintenance.
On each cooling tower, 24 load sensors connected to our wireless DAQ system were used to monitor the fill packs.
Due to the extreme humidity (more than 99% for a temperature more than 45° ), a double casing design with epoxy potting was used. To reach a battery life of 4 years, each Wireless DAQ system was powered by 6 x D Size Lithium Cells.