The engineers who built the massive external fuel tank that will power the shuttle Discovery into orbit this spring used sophisticated X-ray detectors developed by UF researchers to reduce the chance of a defect in the foam insulation covering the tank. The detectors, first invented as a new technology to find land mines, can identify tiny gaps, or air-filled voids, in the insulating foam without causing any damage. It is believed that such a gap – possibly located between the foam and the tanks surface – caused a suitcase-sized piece of foam to break off during Columbias liftoff in January 2003. The chunk struck the edge of the shuttles left wing, seriously damaging it and spurring the shuttles destruction during re-entry on Feb. 1.
"We can do the inspection of the foam as it exists already sprayed onto the tank. We dont have to cut into it," said Warren Ussery, team leader for the return to flight nondestructive evaluation team at Lockheed Martins Michoud Assembly Facility in New Orleans, where the shuttles external tanks are manufactured. "Were able to find critical voids with that (the UF detector)."
UF nuclear engineering professor Ed Dugan and retired UF nuclear engineering professor Alan Jacobs began experimenting with the modified "backscatter" X-ray detector several years ago as part of research aimed at engineering a more effective landmine detector. Conventional X-ray machines propel radiation through a target object to radiographic film on the other side. Different objects absorb X-rays to differing extents, so some show up more prominently on film than others. Backscatter X-ray machines were developed for circumstances when it is impossible to place film behind the object, as is the case with the shuttle tank. Contrasting conventional machines, they obtain images by capturing the radiation scattered "back" from the target.
Ed Dugan | EurekAlert!
A big nano boost for solar cells
18.01.2017 | Kyoto University and Osaka Gas effort doubles current efficiencies
Multiregional brain on a chip
16.01.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
18.01.2017 | Power and Electrical Engineering
18.01.2017 | Materials Sciences
18.01.2017 | Life Sciences