The New and Upgraded Neutron Instruments for Materials Science at HMI - Current Activities in Cooperation with Industry

T. Poeste; Robert C. Wimpory; Rainer Schneider

doi:10.4028/www.scientific.net/MSF.524-525.223

Paper Titles

Design of Engineering Diffractometer at J-PARC
p.199

E7 - New Strain Scanner at HMI - High Q-Resolution for Phase-Sensitive Analysis of Stress Distributions
p.205

The New Materials Science Diffractometer STRESS-SPEC at FRM-II
p.211

SALSA: Advances in Residual Stress Measurement at ILL
p.217

The New and Upgraded Neutron Instruments for Materials Science at HMI - Current Activities in Cooperation with Industry
p.223

Review of Residual Stress Determination and Exploitation Techniques Using X-Ray Diffraction Method
p.229

New Type of Diffraction Elastic Constants for Stress Determination
p.235

Residual Stress Reconstruction by Variational Eigenstrain Procedures
p.241

Application of the cos α Method to Area Detector Type Neutron Stress Measurement
p.247

HomeMaterials Science ForumMaterials Science Forum Vols. 524-525The New and Upgraded Neutron Instruments for...

The New and Upgraded Neutron Instruments for Materials Science at HMI - Current Activities in Cooperation with Industry

Abstract:

Recent progress in engineering includes the development of new materials and innovations in their processing and treatments. Material technologies, like the study of metals, alloys, ceramics and composites, especially non-destructive analyses of residual stresses profiles and textures, have gained an increasing importance. The dedicated residual stress diffractometers E3 and E7 at BENSC, HMI, Berlin are already equipped with new two-dimensional position sensitive detectors. An upgrade of the monochromator system is planned for 2006 which includes perfectly bent silicon crystals in order to optimise both intensity and angular resolution yielding a large gain of the diffractometer efficiency for strain measurements. A range of equipment for sample positioning is available, such as a closed Eulerian cradle for samples with weights of up to 5 kg, a second cradle for heavy samples (up to 50 kg) with the ability to tilt the samples up to 90° and a translation table carrying samples of up to 300 kg and 1000 mm in diameter. Gauge volumes can be adjusted by a new computer controlled variable slitsystem in a range from 1x1x1 mm³ up to several mm³. In-situ residual stress analysis can be performed within industrial components during mechanical or thermal loading (up to 2000 K). Rapid data visualization as well as evaluation is performed by the specially designed software. The powder diffraction pattern is calculated by summation over the scattering angle dependent Debye- Scherrer lines on the two-dimensional 400*400 mm² planar area detector. A large amount of beam time is exclusively used for industrial research. Among the components that were investigated are crankshafts, impellers, pistons, cylinder heads, turbine blades and welds. Both instruments are similarly designed, where E3 is set up for higher flux and therefore penetration depths and E7 is designed for higher angular resolution.

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Periodical:

Materials Science Forum (Volumes 524-525)

Pages:

223-228

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.524-525.223

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Online since:

September 2006

Authors:

T. Poeste, Robert C. Wimpory, Rainer Schneider

Keywords:

Diffractometer Technique, Industry, Instrumental Set up, Monochromator, Neutron Diffraction, Residual Stress

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