Patent:
US2010292938A1,EP2386850, US8527215
11/2010
Inspecting metal and other electrically conductive parts for hidden flaws like subsurface cracks is traditionally a slow and difficult process. This invention introduces an automated system that speed...
Article:
AIP Conference Proceedings 02/2010; 1211:451-457
DOI: 10.1063/1.3362428
Publisher: AIP
Using Active Thermography defects such as cracks can be detected fast and reliably. Choosing from a wide range of excitation techniques the method can be adapted to a number of tasks in non‐destructiv...
Article:
AIP Conference Proceedings 02/2010; 1211:1631-1638
DOI: 10.1063/1.3362264
Publisher: AIP
All types of heavy forgings that are used in energy machine industry, rotor shafts as well as discs, retaining rings or tie bolts are subject to extensive nondestructive inspections before they are de...
Johannes Vrana, Alexander Zimmer, Kevin Bailey, Ravi Angal, Paul Zombo, Axel Buschmann, Robert E. Shannon, Hans-Peter Lohmann, Werner Heinrich
Article:
AIP Conference Proceedings 02/2010; 1211:1623-1630
DOI: 10.1063/1.3362263
Publisher: AIP
Heavy rotor forgings for land-based power generation turbines and generators are inspected ultrasonically. Several decades ago the first inspections were conducted using manual, straight beam, contact...
Patent:
WO2010009918A1,DE102008034162, EP2300810, US2012002036
01/2010
Inspecting large industrial components for hidden flaws usually requires rigid, highly structured scanning systems that struggle with complex shapes. This invention introduces a flexible way to perfor...
Book:
09/2009
DOI: 10.13140/RG.2.1.1680.4567
Publisher: Shaker, ISBN: 978-3832284978
Active thermography with electromagnetic excitation allows one to detect defects in components non-destructively, reliably and fast by imaging with an infrared camera. In induction thermography a curr...
Hubert Mooshofer, Matthias Goldammer, Wolfgang Heine, Max Rothenfusser, Jason Bass, Erik Lombardo, Johannes Vrana
Conference Paper:
DGZfP Jahrestagung 05/2009, At Münster, Germany; 2009
DOI: 10.13140/2.1.3357.5365
In power engineering, components subjected to high stress are used in various applications, and it is essential to prevent defects in these components. In addition to turbine construction, this is als...
Article:
AIP Conference Proceedings 03/2009; 1096:518
DOI: 10.1063/1.3114299
Publisher: AIP
Active thermography, using electromagnetic excitation, allows detecting defects like cracks which distort the flow of current in the component under examination. Like other thermography techniques it ...
Patent:
DE102007032063A1,US2009046758
02/2009
Finding hidden cracks or internal defects in manufactured parts is crucial for safety, but traditional testing methods can miss flaws that run parallel to the surface. This invention introduces an adv...
Article:
AIP Conference Proceedings 02/2008; 975:475-482
DOI: 10.1063/1.2902698
Publisher: AIP
Induction thermography is a non-contacting, non-destructive evaluation method with a wide range of applications. A deeper understanding of the detectability of cracks requires fundamental knowledge ab...
Jürgen Volz, Markus Weber, Daniel Schlenk, Wenjamin Rosenfeld, Johannes Vrana, Karen Saucke, Christian Kurtsiefer, Harald Weinfurter
Article:
Physical review letters 02/2006; 96(3):030404
DOI: 10.1103/PhysRevLett.96.030404
Publisher: American Physical Society (APS)
We report the observation of entanglement between a single trapped atom and a single photon at a wavelength suitable for low-loss communication over large distances, thereby achieving a crucial step t...
Jürgen Volz, Markus Weber, Daniel Schlenk, Wenjamin Rosenfeld, Johannes Vrana, Karen Saucke, Christian Kurtsiefer, Harald Weinfurter
Article:
arXiv:quant-ph 11/2005; 0511183
DOI: 10.48550/arXiv.quant-ph/0511183
We report the observation of entanglement between a single trapped atom and a single photon at a wavelength suitable for low-loss communication over large distances, thereby achieving a crucial step t...