TY - JOUR A1 - Harbich, Karl-Wolfram A1 - Hentschel, Manfred P. A1 - Schors, Jörg T1 - X-ray refraction characterization of nonmetallic materials KW - Nondestructive characterization KW - X-ray refraction topography KW - Pore size KW - Crack density PY - 2001 SN - 0963-8695 VL - 34 SP - 297 EP - 302 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-945 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hentschel, Manfred P. A1 - Harbich, Karl-Wolfram A1 - Lange, Axel A1 - Schors, Jörg A1 - Ekenhorst, Derk A1 - Judd, M.D. A1 - Raynal, R. T1 - X-ray refraction characterizes leight weight materials PY - 1998 SN - 1018-8657 VL - 8 IS - 3 SP - 14 EP - 15 PB - European Space Agency CY - Noordwijk AN - OPUS4-3331 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. A1 - Lange, Axel A1 - Harwardt, Michael A1 - Hentschel, Manfred P. T1 - X-Ray refraction computed tomography for NDE of lightweight materials T2 - Deutsche Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Großgeräten 2006 (SNI2006) CY - Hamburg, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-15836 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Harbich, Karl-Wolfram A1 - Hentschel, Manfred P. A1 - Ekenhorst, Derk A1 - Schors, Jörg A1 - Lange, Axel T1 - X-Ray Refraction for NDT of Micro Cracks and Impacts N2 - High performance composites and other light weight materials are generally a comple problem to the performance of nondestructive testing methods. X-ray refraction provide unconventional X-ray scattering techniques to meet the actual demand for improve nondestructive characterization of these advanced materials. Scanning the samples across collimated narrow incident X-ray beam permits to image integral micro-structures (a present) with a resolution of 10 µm. Investigations of samples after strain-induced micro cracks and fibre debonding in impact damaged epoxy are shown. The physics of X-ray refraction are analogous to the well known refraction of light b optical lenses and prisms, governed by Snell's law. The special feature is the deflection a very small angles of few minutes of arc, as the refractive index of X-rays in matter i nearly one. Due to the density differences at inner surfaces most of the incident X-rays ar deflected. As the scattered intensity of refraction is proportional to the specific surface of sample, a reference standard gives a quantitative measure for analytical determinations. Figure 1 represents a two-dimensional damage distribution of an impact in a 0/90° CFR laminate of 3 mm, thickness. Unlike in ultrasonic testing, there is no shadowing effect o the successive layers. By use of X-ray refraction the exact concentration of debonde fibres is calculated for each position. Additionally the refraction allows the selection of th fibre orientation. T2 - 7th European Conference on Non-Destructive Testing (ECNDT) CY - Copenhagen, Denmark DA - 1998-05-26 PY - 1998 UR - http://www.ndt.net/abstract/ecndt98/435.htm SN - 87-986898-0-0 VL - 3 CY - Broendy, Denmark AN - OPUS4-3328 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Harbich, Karl-Wolfram A1 - Hentschel, Manfred P. A1 - Ekenhorst, Derk A1 - Schors, Jörg ED - Michel, B. T1 - X-ray refraction for nondestructive investigation of micro cracks and impacts T2 - 2nd International Conference and Exhibition Micro Materials CY - Berlin, Germany DA - 1997-04-16 PY - 1997 SN - 3-932434-05-6 VL - 1 SP - 1025 EP - 1027 PB - ddp Goldenbogen CY - Dresden AN - OPUS4-3662 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hentschel, Manfred P. A1 - Harbich, Karl-Wolfram A1 - Lange, Axel A1 - Rudolph, Hans-Volker T1 - X-ray Refraction of Paper and Pigments PY - 1995 SN - 0025-5300 VL - 37 IS - 3 SP - 60 EP - 62 PB - Carl Hanser Verlag CY - München AN - OPUS4-3656 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentschel, Manfred P. T1 - X-Ray Refraction Techniques T2 - Bruker AXS B.V. Invited Lecture CY - Delft, Netherlands DA - 2005-08-17 PY - 2005 AN - OPUS4-11747 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. A1 - Lange, Axel A1 - Harwardt, Michael A1 - Hentschel, Manfred P. A1 - Illerhaus, Bernhard A1 - Goebbels, Jürgen A1 - Bamberg, J. A1 - Heutling, F. T1 - X-Ray Refraction Topography and Computed Tomography for NDE of Lightweight Materials T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - Synchrotron Refraction CT KW - MMC KW - Bragg-Magnification PY - 2006 SN - 3-931381-86-2 SP - 1(?) EP - 9(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-13703 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Bernd R. A1 - Hentschel, Manfred P. A1 - Harbich, Karl-Wolfram A1 - Lange, Axel A1 - Schors, Jörg T1 - X-ray refraction topography for non-destructive evaluation of advanced materials T2 - 15th World Conference on Non-Destructive Testing (WCNDT) CY - Roma, Italy DA - 2000-10-15 KW - X-ray refraction PY - 2000 UR - http://www.ndt.net/article/wcndt00/papers/idn257/idn257.htm SN - 1435-4934 VL - 5 IS - 11 SP - 1 EP - 7(?) PB - NDT.net CY - Kirchwald AN - OPUS4-871 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Bernd R. A1 - Hentschel, Manfred P. A1 - Harbich, Karl-Wolfram A1 - Lange, Axel A1 - Schors, Jörg T1 - X-Ray Refraction Topography for Non-Destructive Evaluation of Advanced Materials KW - X-Ray Refraction KW - Fibre Debonding KW - Topography KW - Crack Density KW - Pore Size KW - SAXS PY - 2001 SP - 1 EP - 7 PB - Society of Manufacturing Engineers CY - Dearborn, Mich. AN - OPUS4-1097 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -