Residual strain/stress analysis by means of energy-dispersive neutron transmission diffraction (EDNTD)

Volker Wagner; Z. Kouril; Petr Lukas; Pavel Mikula; Jan Saroun; Pavel Strunz; Miroslav Vrana

doi:10.1117/12.267893

27 February 1997 Residual strain/stress analysis by means of energy-dispersive neutron transmission diffraction (EDNTD)

Volker Wagner, Z. Kouril, Petr Lukas, Pavel Mikula, Jan Saroun, Pavel Strunz, Miroslav Vrana

Proceedings Volume 2867, International Conference Neutrons in Research and Industry; (1997) https://doi.org/10.1117/12.267893
Event: Fifth International Conference on Applications of Nuclear Techniques: Neutrons in Research and Industry, 1996, Crete, Greece

Abstract

Some results are presented of strain measurements carried out using a novel, modified version of the energy- dispersive neutron transmission diffraction method which has been implemented on a conventional diffractometer at a steady-state reactor. This method, which has so far been used only on time-of-flight instruments, can also be easily and successfully used at steady-state sources. The EDNTD method presented is based on the precise measurement of the Bragg diffraction edge by using focusing crystals and is complementary to the method of strain measurements by Bragg diffraction angle analysis. It allows changes (Delta) d/d of lattice spacings with sensitivity down to some 10^-5 to be investigated for reasonable, irradiated sample volumes and counting times, even at a medium-power research reactor.

Citation Download Citation

Volker Wagner, Z. Kouril, Petr Lukas, Pavel Mikula, Jan Saroun, Pavel Strunz, and Miroslav Vrana "Residual strain/stress analysis by means of energy-dispersive neutron transmission diffraction (EDNTD)", Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); https://doi.org/10.1117/12.267893

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