Neutrograph T. Pirling Institut Laue Langevin INSTITUT MAX VON LAUE - PowerPoint PPT Presentation

The Renaissance of Neutrograph T. Pirling Institut Laue Langevin INSTITUT MAX VON LAUE - PAUL LANGEVIN

Camera Obscura INSTITUT MAX VON LAUE - PAUL LANGEVIN

INSTITUT MAX VON LAUE - PAUL LANGEVIN

Strain imager (Railway-head, Webster, Hughes, ILL) INSTITUT MAX VON LAUE - PAUL LANGEVIN

B G D b g Magnification : b/g Light efficiency : D/b Sketch from 17 th century Blurr : D*(b+g)/g INSTITUT MAX VON LAUE - PAUL LANGEVIN

Neutron Imaging SIZE (CM) L/D Flux 1 x 10 6 s -1 cm -2 CONRAD2@HZB (cold) 10 500 5.8 ANTARES@FRM2 (cold) 40x40 400 100 ICON@PSI (cold) 40 600 3.4 Neutrograph@ILL 20 150 3000* INSTITUT MAX VON LAUE - PAUL LANGEVIN

Neutrograph Flux : 3 10 9 n cm -2 s -1 field of divergence view Blurr at detector distance (deg) (mm) D (mm) L/D (mm): 50 100 200 1.5 130 1 5000 0.01 0.02 0.04 5 1000 0.05 0.1 0.2 20 250 0.2 0.4 0.8 INSTITUT MAX VON LAUE - PAUL LANGEVIN

Neutron radiography at ILL pre 2010 Electrically driven four-piston BMW engine - Universität Heidelberg, Paul-Scherrer-Institut and TU München NEUTROGRAPH at ILL Grenoble flux of 3*10 9 n/cm 2 s and a collimation of L/D=140. INSTITUT MAX VON LAUE - PAUL LANGEVIN

First experiment Pb, protected Boronated polyethylene by 5mm borated rubber B 4 C-window 50x50mm 2 Pb Scintillator screen Fast shutter 70 mm Sample positions Aperture, B 4 C Pb Fritte plus Pb Pb (alternative Positions between here and camera) (between 2 and 50 mm in diameter) CCD camera INSTITUT MAX VON LAUE - PAUL LANGEVIN

First experiment INSTITUT MAX VON LAUE - PAUL LANGEVIN

First experiment INSTITUT MAX VON LAUE - PAUL LANGEVIN

Neutrograph 10m INSTITUT MAX VON LAUE - PAUL LANGEVIN

Neutrograph 14m50 INSTITUT MAX VON LAUE - PAUL LANGEVIN

Immediate solution -Improvements of biological shielding and operation / safety -Installation of xyz- and rotation stage -Optical bench for flexible set-up -Szintillator screens -Variable collimator -> High flux = fast, medium resolution Radiography/Tomography station INSTITUT MAX VON LAUE - PAUL LANGEVIN

SALSA – today! High resolution, multiphase materials Stress mapping in extremely large (case hardened steel wind turbine bearing) components radial strain 8000 radial Fe(110) 7000 collimator 6000 strain / 1-^-6 5000 4000 3000 2000 1000 0 -10 -8 -6 -4 -2 0 INSTITUT MAX VON LAUE - PAUL LANGEVIN position / mm

Dissimilar weld austenitic INCONEL ferritic INSTITUT MAX VON LAUE - PAUL LANGEVIN

Texture imaging Ferritic Buttering Weld austenitic INSTITUT MAX VON LAUE - PAUL LANGEVIN

Super SALSA INSTITUT MAX VON LAUE - PAUL LANGEVIN

Next generation strain scanner Time of flight Monochromatic (SALSA) Continuous white beam Whole diffractogram 1 diffraction peak at a time At least large part of diffractogram Duty cycle 6% (POLDI) Reflectivity of crystal Reflectivity of crystal analyser monochromator 60% 60% Large detector coverage Detector coverage limited to Large analyser/detector typ. 5° x 15° in 2 q possible coverage possible 2 strain components available 1 strain component available 2 strain components available Good focalisation of prim. Monochromatic beam is Good focalisation of prim. White beam needed focalised on sample (~20mm) white beam needed High activation of sample Low activation of sample Even higher activation of sample Efficiency depends mainly on focalisation of prim. beam INSTITUT MAX VON LAUE - PAUL LANGEVIN

TOMO and SUPER-SALSA  Strain/stress imaging  water intake in rocks, medical implants  Manipulation of large samples  Follow dynamic processes (i.e. water, paint etc intake)  Bragg edge technique: texture imaging  Cultural heritage objects in engineering components, fast strain mapping  Texture imaging in engineering  Wavelength selective imaging components, fast strain mapping  PGNAA with lateral resolution  Stresses, built up during solidification  Fast tomography to follow in-situ  Heat treatment dynamic processes in 3D  Tensile testing  Variable beam size in both parallel  Multiphase materials, i.e. dissimilar beam and focusing beam geometries welds INSTITUT MAX VON LAUE - PAUL LANGEVIN

Next generation strain scanner INSTITUT MAX VON LAUE - PAUL LANGEVIN