iMetrum Video Monitoring www.datahawk.com.au Brisbane ● Rockhampton ● Townsville ● Sydney ● Wollongong ● Melbourne ● Hobart ● Adelaide ● Darwin ● Perth DATAHAWK DataHawk was established by UPG in 2013 in answer to the growing challenge in the rail industry to increase efficiency and customer satisfaction all while minimising costs. Alongside Trimble we recognised a real opportunity to focus our technology in the rail industry. DataHawk’s solutions span all stages of railway development and management including planning and analysis, design and construction, safety and maintenance and project operations. DataHawk is Trimble’s only authorised distribution partner for rail technology in Australia and PNG. www.datahawk.com.au Non-contact precision measurement for dynamic structural monitoring New Video based technology is the perfect solution to precision displacement measurement of structures and geotechnical engineering projects. The ongoing need to understand the health and welfare of valuable items such as Buildings, Bridges and Tunnels is ever more prevalent within the strategies asset management teams both within the public and private sectors. As cost of maintaining these asset increases over time so has the pressure to develop more efficient and productive methods for collection of asset knowledge. The iMetrum Non-Contact Displacement Gauge Technology enables sub millimetre displacement and deformation detection making it an ideal solution for monitoring structures. The History of Video Measurement First Known Example is the Tacoma Narrows Bridge in 1940 There are a number of companies offering laboratory type solutions. iMetrum is the only commercially available video gauge tailored to external use Increasing use by researchers from 1980s onwards with iconic use in crash testing autos. Principals are used in motion capture, optical computer mice and DIC. What we do Creation of the iMetrum Video Gauge iMetrum is a spinout of the Bristol University with the technology first commercially available in 1970. Technology first used in structural monitoring of the Humber Bridge & Severn 2nd crossing UK. Class-leading resolution has resulted in a strong uptake within aerospace industries Material testing 2/3 of business, Structures 1/3. Our Technology Imetrum have developed & patented specialist software that measures movement in materials and structures highly accurately in real time. The system is a point to point and full-field optical measurement system - we use pattern recognition technology and sub pixel interpretation of video images – ie non-contact. UKAS Calibration to BS/EN/ISO 9513, class 0.5 and ASTM (E83) calibration to class B-2. Resolution and frame rate are camera and setup dependent – for standard system, reliably >1/100,000 of the lens Field of View (FoV) eg. 0.1mm resolution for a 10m FoV. Resolutions of 1/2,000,000 of FoV can be achieved with an appropriately constructed system. Completed extensive comparative trials with other optical and traditional techniques with Airbus, NPL & Strainstall. 3D measurements possible (multi-camera systems). Videos & data can be stored for analysis later, or processed and transmitted in real time (over 300Hz). Proving the Technology Year long project lead by UK National Measurement Office (NPL). Comparisons with conventional and new methods. Use in various weather conditions. Proving the Technology iMetrum setup 45m away in car park Resolution of 0.02 mm. Testing at night. Real Word Application/ Strain Mapping Rail Bridge Strain Mapping Used for Monitoring Track, Monitoring Structures and during manufacture and testing of components. Displacement of Rail Dynamic deflection monitoring of track, sleepers & ballast. Information on ground movement, track displacement / bending, gauge separation. Measurements taken at distance, under train loading. Displacement of Rail Graphical Display of Processed Data. Dynamic response of various parts of the track bed identifiable. Resolution much better than 0.1mm. Tunnel Monitoring Convergence & Ring Separation. Track Monitoring within tunnels. Demonstration project with Cross Rail / ongoing. 250 measurement points, with 4 cameras. Infra-Red lighting used, so no obvious visible clue of monitoring ongoing, and no negative impact of work lights. Measurement resolutions of 0.1mm Remote access to equipment, and live reporting of results Tunnel Monitoring Tunnel Monitoring Graphical display of extensions over 3 month monitoring period. Bridge and Structures Dynamic Testing under normal traffic conditions, and also specific Load Testing. Access costs minimised, and resolution increased over other noncontact techniques. Bridge Monitoring 4 3 6 1 2 5 Interpreting the Data Graphical display of rotation data Pattern of movement closely matches, suggesting primary mode of rotation is as a rigid body, rather than pivoting around centre Interpreting the Data Graphical display of rotation data Rotation approximately mirrored, suggesting there is a second mode of rotation around the centre line of the bridge. From analysis, magnitude of Western deflection 6% greater than Eastern deflection Vibration Analysis One of the most common research applications for Imetrum system within Civil Engineering. Suspension Cables and Conductors. Hard to access pipe work. Vibrating machinery and components Component Testing Many automotive, power, aerospace & defence customers. Easily scalable by using different lenses. Use for a wide range of measurements including: Strength of complex structures. Crack growth investigation. Structural deflection. Deformation during heating & cooling. Impact testing. Conclusions A flexible system, offering potential for substantial time & cost savings. Turn up and measure solution for a wide range of structures. Potential for extremely high resolution.