where expertise comes together - since 1996

Web's Largest Portal of Nondestructive Testing (NDT)
Open Access Database (Conference Proceedings, Articles, News), Exhibition, Forum, Network

NDT.net Issue - 2007-10 - NEWS

Knowing when the Bridge Breaks - Wireless Sensor Network to Assess Building Damage Early

BAM Federal Institute for Materials Research and Testing1256, Berlin [Germany]
civil engineering, bridge
NDT.net Journal
Issue: 2007-10
Damage commonly occurs in buildings when a component fails suddenly with a partial or total collapse as a consequence. This type of event leads to serious damage to property and if it is a bridge or a large hall, then people in particular are at risk. The often great age of bridges and the increasing volume of traffic (particularly heavy traffic) which they are expected to carry are in clear contradiction to each other. Thus the probability increases that the load-bearing capacity of a bridge decreases rapidly and often unnoticed with sometimes dire consequences.

In order to prevent such accidents, the Federal Institute for Materials Research and Testing and the Berlin-based ScatterWeb Company are currently developing a special radio-based, self-configuring measuring system. This measuring system consists of a number of identically designed sensors which are self-sustaining, need no wiring, can act as both transmitters and receivers and are equipped with a special sensor technology making long-term monitoring of buildings or engineering facilities possible. This in particular applies to buildings and structures for transport and traffic and large-scale industrial facilities, where a subsequent wiring installation is difficult or impossible.

In order to reliably monitor large or inaccessible objects over the long term, the radio range must be sufficient. The sensor unit uses strain gauges for stress analysis and contains interfaces for additional sensors. In addition, all components must exhibit a high accuracy of measurement and high energy-efficiency. The high network stability required can be ensured by the so-called multihop architecture which enables the exchange of failed modules and the integration of additional modules without interrupting the network operation.

The project is supported by the Federal Ministry of Economics and Technology and unites two partners, both of whom are in a leading position in their fields. BAM's Division "Measurement and Testing Technology, Sensors" provides its competence in the field of sensor technology, experimental structure monitoring and early damage assessment while the ScatterWeb Company is prominent in the field of self-configuring wireless mesh networking.

Dr.-Ing. Matthias Bartholmai
Division VIII.1 "Measurement and Testing Technology, Sensors"
10117 Berlin
Phone: +49 30 8104-1912
Fax: +49 30 8104-1917
Email: matthias.bartholmai@bam.de Phone: +49 30 8020838-0

Janis Anders
Federal Institute for Materials Research and Testing (Bam)
12200 Berlin Scatterweb Gmbh
Charlottenstr. 16
Fax: +49 30 8020838-11
Email: anders@scatterweb.net

More of BAM Federal Institute for Materials Research and Testing published in NDT.net
2018-12-01: Coda Wave Interferometry used to detect loads and cracks in a concrete structure under field conditions
2018-12-01: Efficient modelling of guided ultrasonic waves using the Scaled Boundary Finite Element Method towards SHM of composite pressure vessels
2018-12-01: Bayesian operational modal analysis of offshore rock lighthouses for SHM
2018-12-01: A Novel Method of Corrosion Damage Monitoring of Porous Aluminum Alloy Structure Based on Piezoelectric Sensor
2018-12-01: Distributed strain sensing with sub-centimetre resolution for the characterisation of structural inhomogeneities and material degradation of industrial high-pressure composite cylinders
2018-12-01: A super resolution signal reconstruction method of Lamb waves
2018-10-01: Mobiles LIBS-Gerät (Laser Induced Breakdown Spectroscopy) zur On-Site-Analyse von Schäden an der Beton-Infrastruktur – BauLIBS
2018-09-01: Photothermische Schichtdickenmessung an Betonbeschichtungen – unter Laborbedingungen und auf der Baustelle
2018-09-01: Essentielle Parameter zur numerischen Abschätzung der Sichtbarkeit von Bildgüteprüfkörpern in der digitalen Radiographie
2018-09-01: Effiziente Modellierung von geführten Wellen mit der Scaled Boundary Finite Elemente Methode und deren Anwendung für Composite-Druckbehälter
All 1213 Articles & News of BAM Federal Institute for Materials Research and Testing in NDT.net

© NDT.net - The Web's Largest Portal of Nondestructive Testing (NDT) ISSN 1435-4934

Open Access Database, |Conference Proceedings| |Articles| |News| |Exhibition| |Forum| |Professional Network|