transcript
- Slide 1
- Brisbane Rockhampton Townsville Sydney Wollongong Melbourne
Hobart Adelaide Darwin Perth www.datahawk.com.au iMetrum Video
Monitoring
- Slide 2
- 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. DataHawks solutions span all stages of railway
development and management including planning and analysis, design
and construction, safety and maintenance and project operations.
DataHawk is Trimbles only authorised distribution partner for rail
technology in Australia and PNG. www.datahawk.com.au
- Slide 3
- Slide 4
- 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.
- Slide 5
- The History of Video Measurement First Known Example is the
Tacoma Narrows Bridge in 1940 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. There
are a number of companies offering laboratory type solutions.
iMetrum is the only commercially available video gauge tailored to
external use
- Slide 6
- What we do
- Slide 7
- 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 2 nd crossing UK. Class-leading
resolution has resulted in a strong uptake within aerospace
industries Material testing 2/3 of business, Structures 1/3.
- Slide 8
- 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).
- Slide 9
- Proving the Technology Year long project lead by UK National
Measurement Office (NPL). Comparisons with conventional and new
methods. Use in various weather conditions.
- Slide 10
- Proving the Technology iMetrum setup 45m away in car park
Resolution of 0.02 mm. Testing at night.
- Slide 11
- Real Word Application/ Strain Mapping Used for Monitoring
Track, Monitoring Structures and during manufacture and testing of
components. Rail Bridge Strain Mapping
- Slide 12
- 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.
- Slide 13
- Displacement of Rail Dynamic response of various parts of the
track bed identifiable. Resolution much better than 0.1mm.
Graphical Display of Processed Data.
- Slide 14
- 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
- Slide 15
- Tunnel Monitoring
- Slide 16
- Graphical display of extensions over 3 month monitoring
period.
- Slide 17
- Bridge and Structures Dynamic Testing under normal traffic
conditions, and also specific Load Testing. Access costs minimised,
and resolution increased over other non- contact techniques.
- Slide 18
- Bridge Monitoring 1 222 435 6
- Slide 19
- Interpreting the Data Pattern of movement closely matches,
suggesting primary mode of rotation is as a rigid body, rather than
pivoting around centre Graphical display of rotation data
- Slide 20
- From analysis, magnitude of Western deflection 6% greater than
Eastern deflection Rotation approximately mirrored, suggesting
there is a second mode of rotation around the centre line of the
bridge. Interpreting the Data Graphical display of rotation
data
- Slide 21
- 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
- Slide 22
- 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.
- Slide 23
- 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.