Seibersdorf Laboratories have recently conducted research into the potential for damaging of artworks exposed to a laser scanner FARO Focus3D X was investigated. The issue to asses was if the absorption of laser light in the superficial layers of paint and varnish on canvas can lead to an increase in temperature that could deteriorate the quality of the artwork.
Computer modelling was used to calculate the highest rise in temperature achievable in a worst-case exposure scenario. The question of this study was if it is possible to rule out the possibility for thermally-induced damage of paintings when using the laser scanner FARO Focus3D X. Other potential effects such as photochemical interactions or accelerated ageing provoked by extended exposures over the course of days or more go beyond the scope of the present study.
Given the unknown physical properties of the irradiated artworks, conservative values along with a worst-case exposure scenario (such as the scanner remains on one path and the scanner head does not turn in the horizontal plane, but also regarding choice of optical and thermal properties) were considered. In view of this, the rise in temperature at the surface of the painting was calculated to be less than 2 degrees. Considering that the scanner head also turns in horizontal direction, one spot on the painting would be exposed for less than 10 seconds at the lowest angular speed (0,004 revolutions per minute), during which the calculated rise in temperature was less than 1,3 °C.
Figure 1. Calculated time-temperature history at the surface of the painting exposed to the laser scanner FARO Focus3D X (distance 1 m, minimum rotation frequency)
Such increase is less than, or as a worst case of the order of magnitude of temperature variations that can be observed indoors purely from ambient air temperature, even in a museum where the ambient temperature is controlled. Thus it can be excluded that paintings undergo temperature-induced deterioration after exposure to the laser scanner FARO Focus3D X.
Moreover, it can be ruled out that the melting point of the components of dried oil paint and hardened superficial layers (e.g. varnish) can be reached in the chosen exposure scenario, thus ruling out the possibility of a phase change. Similarly, it can be assumed that the change in thermal and optical properties is negligible over the range of 2°C around ambient temperature.
FARO staff will demonstrate the FARO Edge touchscreen computer for basic measurements, the FARO Laser ScanArm HD with the lightest laser line probe for non-contact measurements and the revolutionary high speed FARO Laser Scanner Focus3D for detailed 3D modeling and image documentation. To help illustrate the FARO Edge ScanArm HD LLP remarkable data-capture and transfer capabilities it will be connected to a Laser Lines 3D printer.
TCT Live is the event for Product Development and Additive Manufacturing in Europe. It is an essential event for everyone involved in the concept, design, specification and manufacturing process to learn about the latest in Additive Manufacturing, 3D Printing and other cutting edge product development software and technology.
With around 100 participants involved in the FARO, Autodesk & UCL AEC tech collaboration day, the event itself seems to have gone down very well indeed. We would like to thank all those who took part and helped make this event happen with a special shout out to Autodesk and the guys over at UCL for all their support.
Due to the success of the event we plan to hold an annual event so stay tuned for more details..
FARO is a silver sponsor at the upcoming 2nd GEOBIM Middle East Conference, 16-17 August 2015 to be held at the Hotel Al Bustan Rotana Dubai, UAE. Join us to discover the FARO´s strong existense in the field of BIM Technologies with its High End 3D Documentation solutions during the GeoBIM 2015.
The Technical Slot of “3D Documentation in the BIM workflow: Efficiency Increase, Cost Saving, Risk Reduction” to be presented by FARO´s Senior Product Manager 3D Documentation Oliver Bürkler, will focus on implementing FARO´s award winning 3D Documentation solutions in documenting large volume spaces or structures in 3D, surveying and construction, as well as for developing and sustainability of large Scale Infrastructural Projects and the implementation of FARO 3D BIM processes into them.
With more than 30 years of pursuing its vision: “To be the world’s most trusted source for 3D measurement, imaging and realization technology”, we are developing values and adding them to computer-aided measurement and imaging devices and softwares to deliver the superior solutions.
Those who employ FARO 3D Solutions, are enabled to easily and accurately connect the physical world to the virtual world.
Please click here for Plenary Plan and further information of the event!
A clip from Larimer County demonstrating the benefits of our FARO Laser Scanner and how it excels in comparison to previous methods when tasked with documenting a crime scene.
Brian Wangler, a Crime Lab Analyst for the Northern Colorado Sheriff’s Office, received the award for his efforts in introducing the FARO Focus3D X 120 Laser Scanner solution to Larimer County.
By allowing investigators to capture crime scenes in 3D, the FARO Laser Scanner provides an exact record of the entire scene at the touch of a button and permits the site to be returned to normal use a short time later.
With 3D documentation replacing crime scene sketches, the crime scene reconstruction can be visited multiple times to verify witness testimony or evaluate hypotheses. Forensic scientists can accurately analyze line of sight, blood spatter and bullet trajectories to complement other techniques such as offender’s height estimation from video surveillance.
To find out more than click here!
BBC’s ONE’s 60 minute special Rome’s Invisible City follows ScanLAB Projects and presenters Alexander Armstrong and Dr Michael Scott as they explore the hidden underground secrets of Ancient Rome. The show explores Roman infrastructure and ingenuity, all below ground level. We journeyed via the icy, crystal clear waters of subterranean aqueducts that feed the Trevi fountain and two thousand year old sewers which still function beneath the Roman Forum today, to decadent, labyrinthine catacombs. Our laser scans map these hidden treasures, revealing for the first time the complex network of tunnels, chambers and passageways without which Rome could not have survived as a city of a million people.
Used in the program is our very own FARO Focus3D. The FARO Focus3D Laser Scanner creates a precise, virtual copy of the scanned objects at millimeter accuracies in only minutes by capturing up to 976,000 data points per second. At those speeds and with features such as auto-registration, projects are completed in a fraction of the time and can accrue savings up to 50% in scanning and processing time. Intuitive controls on the touchscreen display make the Focus simple to operate; its small size and weight facilitate portability and setup on site.
The FARO Focus3D Laser Scanner is the ideal portable scanning solution for accident reconstruction. With the Focus3D you can quickly capture the scene and minimize safety risk as well as traffic stoppages. Scan data is saved on an SD card for portable upload to the workstation for detailed analysis. The result is a permanent virtual 3D point cloud detailing vehicle, roadway and environmental conditions. This technology enables you to conduct accurate measurements and visualizations to recreate the accident for evaluation, as well as share scan data via the internet with insurance and legal agents.
Known worldwide and welcoming about 3.5 million visitors each year, the Mont Saint-Michel abbey is a major centre of attraction. As it is exposed to bad weather, it benefits from frequent restoration work. The French Centre for National Monuments (CMN) is currently focusing its efforts on the Merveille building, located just to the north of the abbey’s church, and containing the cloister, refectory, work room and chaplaincy. Together, these structures make up two sets of three-storey buildings, resting on the slope of the rock and extending approximately 90 m in length, 40 m in width and up to 50 m high.
“To prepare for this restoration the CMN asked us to produce a detailed digital rendering of the site so they would have access to a very precise survey, which was not available from the existing plans they had access to,” explained Lazare Grenier, Topography and Survey Engineer at Art Graphique & Patrimoine (AGP). The company, with long experience in using FARO equipment, decided to use scanners for this application. The topography of the site is complex and they needed to work outside of visiting hours. Simply put, a maximum of efficiency was required in a minimum of time. In these conditions, AGP was able to get the most out of the methodology they use in this type of application. This consists in defining all the locations where scanners will be placed in advance of placement to limit the amount of overlapping, and above all to avoid forgetting a hidden area. “This task led us to select almost 700 locations for placing the scanners.”
For the Mont Saint-Michel site, AGP used the FARO Focus 3D X 330 over a period of four weeks in late 2014. Certain parts of the site, notably the exterior walls above the cliff, were not visible from any position on the surface, so the digitisation was done using airborne equipment: to achieve this, AGP relied on traditional photogrammetry, since the onboard scanners did not have a high enough precision. The assembly of the scans is done using SCENE software from FARO.
With many years of experience under his belt using FARO scanners, Lazare Grenier takes stock of lighter and more compact than their predecessors. They are more precise, easier to use and work off batteries. They also have increased their depth of field and are able to record scenes which are much closer, as well as much further away. These scanners also allow for digitising buildings in complete darkness or in full sunlight ensuring total safety for the public in terms of their eyesight. All of this is particularly important in an application such as that of Mont Saint- Michel, where there are many constraints for scanner placement, requiring the scanner to be placed very close to the target in some cases, and farther away in other cases.”
To be held on the 17th of June at the Darwin Building we invite you to join us on a FARO and Autodesk AEC tech collaboration day, to be hosted by and held in association with the University College London.
Point Clouds are becoming the new currency of 3D as built documentation. With the latest innovations in Autodesk software and the continued development of FARO’s laser scanning technology, the integration of point clouds into AEC workflows has never been easier with such possibilities for accurate modelling, as built verification and visualisation.
To find out more about the event and how to register then click here!