Berlin 2005 – wissenschaftliches Programm

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M: Metallphysik

M 46: Symposium Tomographic Methods in Materials Research

M 46.3: Vortrag

Dienstag, 8. März 2005, 17:40–18:00, TU H1058

Neutron radioscopy of a running combustion engine — •Johannes Brunner — FRM-II, 85747 Garching, Lichtenbergstr. 1

Dynamic neutron radiography is a non-destructive testing method, which made big steps in the last years. Depending on the neutron flux, the object and the detector a time resolution down to a few milliseconds is possible. In the case of repetitive processes the object can be synchronized with the detector and better statistics in the image can be reached by adding radiographies of the same phase. By delaying the trigger signal a radiography movie can be composed with a time resolution down to 100 mys. A combustion engine is an ideal sample for the explained technique, because the motor block of metal is relatively easy to penetrate, while oil and fuel attenuate the thermal neutron beam much stronger. After various experiments at ILL and PSI the first measurements at the new neutron source FRM-II started.