Distributed Fiber Optic Sensing (DFOS) enables the strain measurement along the entire length of an optical fiber. The recent IGMS open access paper in the journal Sensors explains how these data can be used for shape sensing of concrete structures. Follow this link to learn more about the right cable selection, the impact of different gauge lengths and the achievable accuracy of the shape calculation.
The General Assembly of the International Federation of Surveyors (FIG) elected Werner Lienhart as the Chair Elect of Commission 6 - Engineering Surveys. The elected Chair Elect term as the Chair of the Commission will be initiated at the FIG Congress 2022 for the period 2023-2026.
18 rowing clubs took part at the first international rowing competition at the river Mur. Winners at the sprint track that was staked out by IGMS were LIA Wien (Male 8+) and RV Wiking Linz / Regensburg RC (Female 8+).
IGMS supports the dragon boot and rowing sprint races of the Grazer River Days. The team of IGMS determined a digital twin of the river section with laser scanning and used this data to calculate the coordinates of the race tracks. These were staked out with buoys together with the fire brigade of Graz.
IGMS receives the best paper award at the 10th International Conference on Structural Health Monitoring (SHMII) for the article: Autonomous Integrity Monitoring of Shotcrete Tunnel Linings using Distributed Fiber Optic Sensing.
The Technical Committee of the Fiber Optic Sensing Association (FOSA) held a webinar on Fiber Optic Monitoring of Large Concrete Structures. The webinar was presented by Werner Lienhart and is available on the FOSA YouTube channel.
The IGMS team instrumented two ground anchors with distributed fiber optic sensing (DFOS) cables. Each anchor is 50 m long and used for a retaining wall at Bratislava Castle, Slovakia. Distributed fiber optic strain sensing (DSS) is used to investigate the anchor’s performance under these special geologic conditions. This project is a follow up project to the research project LiNaFoS (FFG #871536) in collaboration with Keller, specialised geotechnical contractor.
Prof. Werner Lienhart acts as jury president and external examiner at the defending of the PhD Thesis “Distributed Fiber Optic Sensor for Vibration Measurement based on Coherent Backscattering” at the Photonics Group of Universite de Strasbourg. Congratulations to Alireza Morsali for achieving the doctoral degree.
The world exhibition in the Modern Art museum Forum Stadtpark included a thought experiment. What if the museum building lifts off the ground for one second while the earth continues to rotate below? Find out where the building touches the ground again
Maintenance of tens of thousands of retaining structures in the Alpine area is challenging. Follow this link to our open-access paper that addresses this challenge with rapid deformation monitoring using mobile mapping systems and automated point cloud processing algorithms.
The usage of VR gear in mixed reality applications demands a high position and orientation accuracy of all devices. Follow this link to the open access paper publisched in Sensors to see how the HTC Vive Pro system has performed in the IGMS measurement laboratory.
Dr. M.S. Miah, expert in the analysis of dynamic data and vibration based Structural Health Monitoring (SHM), starts his research work at IGMS. We welcome Dr. Miah in our team and are looking forward to extend IGMS's capabilites in SHM.
Structural health monitoring (SHM) is currently mainly based on conventional geotechnical and geodetic sensors. With the rise of fibre optic sensors, continuous measurements without interruption of construction of civil engineering structures becomes possible. Follow this link to the open access paper to see how distributed fibre optic sensors (DFOS) complement geodetic measurements.
Although the Ball der Technik was shifted to 2022 due to Covid19, preparation work already started. Ball der Technik is one of the most beautiful social and dancing events and will be organized next year by the faculty of Mathematics, Physics and Geodesy. Watch the Teaser Video here.
An extended version of the award winning paper of the wide range of fibre optic sensing applications at a tunnel construction site has been published in the Proceedings of the Institution of Civil Engineers (ICE). Follow this link to the open access paper.
TU Graz released a new image video of the Geodesy degree program on the TU Graz YouTube channel. Learn how geodesy impacts our daily life and how you can shape the future as a geodesist.
Prof. Werner Lienhart acts as external examiner at the Geodetic Institute of Leibniz University Hannover and takes also part at the defence of the PhD thesis “Robust Deformation Monitoring of Bridge Structures Using MEMS Accelerometers and Image-Assisted Total Stations”. Congratulations to Mohammad Omidalizarandi for achieving the doctoral degree.
IGMS jointly organized together with TU Munich and ETH Zurich the 19th International Course on Engineering Geodesy. The conference was held at TU Munich where more than 160 experts attended the tutorials and presentations. IGMS demonstrated the benefits of image based monitoring for bridge in live demonstrations and date processing sessions.
Within the publically funded FFG project RIBET IGMS starts permanent crack monitoring of the tunnel lining of the Tauern Tunnel. The Tauern Tunnel is one of the main highway crossing of the Alps. It consists of two tubes with a length of about 6.5 km each. IGMS installed a fibre optic based crack monitoring system in the summer of 2019. After the successful evaluation stage the permanent high resolution monitoring started in March 2019.
Energienetze Steiermark GmbH supports IGMS by providing 4 Trimble NetRS GPS receivers and Zephyr antennas. This hardware will be used in the practical exercises of the Master Course Geodesy to demonstrate and train students on GPS reference station networks. Furthermore, the equipment complements IGMS’s existing GNSS hardware for Structural Health Monitoring (SHM) using Global Navigation Satellite Systems.
Students of the course Engineering Geodesy visit the tunnel construction sites of the Semmering Base Tunnel (SBT). The students examine the intermediate construction sites Sommerau and Göstritz above ground and go also underground using one of the two 100 m deep shafts at Sommerau to access the two tunnel tubes which are currently being built using the New Austrian Tunneling Method (NATM). In course of the excursions the students experience live several monitoring installations using total stations and fibre optic sensors.
Slaven Kalenjuk received the prestigious Heinrich Wild Award 2019. The Heinrich Wild Award recognizes outstanding young researches in the field of Engineering Geodesy. This prize is awarded by Leica Geosystems AG and Slaven Kalenjuk was selected as winner for the development of innovative solutions for monitoring of retaining structures using mobile mapping systems (MMS).
IGMS has been recognized for its patent activities at the inventors’ gala held in the historic city centre of Graz. Within the last years, the IGMS team has filed three patents in the field of fibre optic sensing. The patent AT516158B1 for the monitoring of tunnel lining segments has already been granted. Two other patents are pending.
Prof. Werner Lienhart acts as external examiner for a PhD thesis at the Queen's University Belfast and takes also part at the viva voce examination. Congratulations to Darragh Lydon to pass the PhD examination.
IGMS presents the Bachelor and Master Courses “Geodesy” at the work and study fair BeSt3. BeSt3 is the largest fair for education programs in Austria and is visited by up to 30 000 pupils and teachers. IGMS demonstrates live how geodesy digitizes the world with laser scanning and fiber optic sensing.
The Austrian Highway Agency ASFINAG and representatives from the Japanese Express Way company NEXCO and the Metropolitan Express Company Shutoko visit IGMS to exchange the current state of the art of assessing the integrity of infrastructure objects like bridges, tunnels and retaining walls. This includes the efficient data acquisition with mobile mapping systems, the uses of distributed fibre optic sensing as well as image based measurements.
The surveying department of council of Vienna (MA 41) visits the fibre optic tunnel monitoring installation at the Zentrum am Berg (ZaB). ZaB is one of the largest tunnel research centres in Europe. At ZaB experiments can be made at a 1:1 scale. Prof. Galler of MUL and Prof. Lienhart of TUG give a detailed tour of the facilities of ZaB.
IGMS hosts the 23rd plenary meeting and two working group meetings of ISO TC172/SC06 Geodetic and Surveying Instruments. Within the two-day meeting representatives from Austria, Germany, Japan, Switzerland and Slovakia revise current standards and discus new standards in the field of geodetic instrumentation. The current list of standards under the responsibility of this committee can be found here
IGMS has been awarded with the Best Paper Award at the International Conference on Smart Infrastructure and Construction (ICSIC) for the paper entitled Distributed fiber optic sensing on a large tunnel construction site: Increased safety, more efficient construction and basis for condition based maintenance. The paper covers several distributed fibre optic installations at the Semmering Base Tunnel for the monitoring of tunnel linings, shafts, pipelines and reinforced earth structures. The full paper is open access and can be downloaded here
The research group of Engineering Geodesy of the Technical University of Munich visits the IGMS monitoring at the Semmering Base Tunnel. Special focus was placed on the monitoring of the reinforced earth structure at the disposal site Longsgraben.
Werner Lienhart held a master class on geodetic monitoring using total stations at the 6th International Course on Geotechnical and Structural Monitoring (IcGSM) in Rome. In this interactive tutorial potential error sources of total station based monitoring were discussed and the participants had the chance to experience the impact of wrong instrument settings or insufficient equipment.
lGMS gives two presentations about fibre optic sensing at the 4th Joint International Conference on Deformation Monitoring (JISDM) in Greece. Fabian Buchmayer presents new strain and temperature measurements in conventional tunnelling using distributed fibre sensors. Ferdinand Klug demonstrates together with the Nottingham University Ningbo and the University of the Faroe Islands a combined GNSS and FBG based approach to observe ship deformations in extreme weather conditions.
Prof. Werner Lienhart acts as external examiner for two PhD thesis and takes also part at the viva voce examination. Congratulations to Fatemeh Hamid-Lakzaeian to pass the PhD examination at the University College Dublin and to Cheng-Chieh Wu to receive a PhD from TU Berlin.
Students of the bachelor program Geodesy visit the intermediate access point Grautschenhof of the Semmering Base Tunnel (SBT). The students examine the construction site above ground and go also underground using one of the two 100 m deep shafts to access the two tunnel tubes which are currently being built using the New Austrian Tunneling Method (NATM).
The national Austrian TV station ORF reports about the installation and operation of the IGMS fibre optic monitoring system for the Semmering Base Tunnel. At Goestritz, IGMS monitors deformations of the concrete linings of the two 200 m deep shafts. Watch the video on the TU Graz YouTube channel
Former ISHMII President and Secretary General Dr. Wolfgang Habel visits IGMS and gives an invited talk for students at Graz University of Technology. In his presentation, Dr. Habel demonstrates the benefits of fibre optic sensors for Structural Health Monitoring (SHM).
Werner Lienhart explains the benefits of the IGMS patented approach of structural monitoring of tunnel lining segments in a radio interview. The interview was broadcast on the web radio AirCampus of the universities of Graz and on Radio Soundportal. The audio stream of the interview can be found here
Werner Lienhart was awarded with the Teaching Award of Excellence 2017/2018 for his outstanding teaching in the lecture Advanced Engineering Geodesy. The award was given by the TU Graz after an extensive selection procedure. First students, deans of studies and lecturers can themselves nominate courses. Next, nominees have to submit a description of the course and a concept with pedagogic and didactic backgrounds. The final decision about the prize winners is made by a selection committee chaired by the Vice Rector for Academic Affairs, consisting of representatives of the Students’ Union, University Council, curricular committees, the Senate and external experts on the topic of university teaching. More information can be found in TU Graz people
IGMS has been honored as one of the top 4 innovators of Austria at the Staatspreis Patent (Austrian Patent Award) Gala. The Gala took place at the historic Sofiensäle in Vienna and the prices were presented by the Head of the Patent Office and the Austrian Minister of Traffic, Innovation and Technology. The video about the IGMS patent on tunnel lining segments can be seen on the TU Graz YouTube Channel
Former IGMS member Dr. Matthias Ehrhart has been award the Karl Rinner Award for his work on Image Assisted Total Stations (IATS). The Karl Rinner Award is the most prestigious award for young researchers in Austria. It is given by the Austrian Geodetic Commission (ÖGK). The award ceremony took place at the Federal Office of Metrology and Surveying (BEV) in Vienna.
IGMS nominated for patent of the year
The innovative patent of TU Graz and Montanuniversität Leoben using distributed fibre optic sensing for the monitoring of pre-cast tunnel lining segments has been nominated for the Austrian Patent Award 2018. The granted patent "Tübbingelement mit Dehnungsmessung" (AT 516158 B1) has already been successfully applied in the Koralm Tunnel and is currently in the top 4 list of the patent of the year. The final decision of the jury will be announced in the celebration gala on November 8th in Vienna. See the complete list of nominees at the homepage of the Austrian Patent Office.
14. - 17.05.2018
IGMS exhibits at the “Austrian Geodetic Day” in Steyr
The "Österreichische Geodätentag" is the largest Austrian geodetic come together and takes place every three years. It is organized by the Austrian Scociety for Survey and Geoinformation (OVG). This year, IGMS participates with an exhibition booth and demonstrates the current research in geodetic and fibre optic sensing.
Students extend 3D Model of Stalactite Cave
IGMS bachelor students performed terrestrial laser scanner and total station measurements in the stalactite cave Katerloch to extend the existing 3D model. The Katerloch is one of the largest stalactite caves in Austria. IGMS performs laser scanning in this cave since 2016. This year the focus was the mapping of the "Seeparadies", an area with an underground lake.
Invited talk at ETH Zurich
Werner Lienhart gave an invited talk on “Drowning in data: The curse of high resolution structural health monitoring” at the ETH Zurich. The talk focused on the challenges and downfalls as well as the potential of high frequent monitoring data obtained from image assisted total stations, laser scanners and fibre optic sensors.
Ab dem WS 2018/2019 gibt es an der TU Graz das neue Masterstudium "Geodäsie". Gemeinsam mit dem Bachelorstudium "Geodäsie" bietet die TU Graz ein vollständiges Geodäsiestudium an, welches sowohl die Ausbildung in der klassischen Vermessung als auch die Navigation, Satellitengeodäsie, Geoinformatik, Fernerkundung und Ingenieurgeodäsie umfasst. Studierende erwartet ein innovatives Studium mit besten Jobaussichten.
TU Graz offers a new Master Course "Geodesy" starting in autumn 2018. The innovative Master course together with the Bachelor Course "Geodesy" covers all aspects of classical surveying as well as the state of the art in navigation, satellite geodesy, geo-information, remote sensing and engineering geodesy.