DD CEN ISO/TS 21432:2005
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Non-destructive testing. Standard test method for determining residual stresses by neutron diffraction
Hardcopy , PDF
05-07-2021
English
06-30-2008
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
4.1 Symbols
4.2 Subscripts
4.3 Abbreviated terms
5 Summary of method
5.1 Preamble
5.2 Outline of principle - Bragg's law
5.3 Neutron sources
5.4 Strain measurement
5.5 Neutron diffractometers
5.6 Stress determination
6 Preparations for measurements
6.1 Preamble
6.2 Alignment and calibration of the instrument
6.3 Choice of diffraction conditions
6.3.1 Monochromatic instruments
6.3.2 TOF instruments
6.4 Positioning procedures
6.5 Gauge volumes
6.6 Determination of a strain free or reference lattice
spacing
7 Material characterization
7.1 Preamble
7.2 Composition
7.3 Thermal/mechanical history
7.4 Phases and crystal structures
7.5 Homogeneity
7.6 Microstructure
7.7 Texture
8 Recording requirements and measurement procedure
8.1 Preamble
8.2 Recording requirements
8.2.1 General information - instrument
8.2.2 General information - specimen
8.2.3 Specific information required for each strain
measurement
8.3 Specimen co-ordinates
8.4 Positioning of the specimen
8.5 Measurement directions
8.6 Number and location of measuring positions
8.7 Gauge volume
8.8 Gauge volume centroid considerations
8.9 Temperature
9 Calculation of stress
9.1 Preamble
9.2 Normal stress determinations
9.3 Stress state determinations
9.3.1 The sin[2][psi] method
9.4 Choice of elasticity constants
9.5 Data analysis
9.5.1 Peak fitting function
9.5.2 Background function
9.5.3 Peak to background ratio
9.5.4 Distorted peak profiles
10 Reliability of results
11 Reporting
11.1 Preamble
11.2 Strain or stress values
11.2.1 Stress free or reference lattice spacing
11.2.2 Conversion of strain to stress
11.2.3 Elasticity constants
11.2.4 Positioning
11.3 Neutron source and instrument
11.4 General measurement procedures
11.5 Specimens/materials properties
11.6 Original data
Annex A (informative) Measurement procedures
Annex B (informative) Determination of uncertainties in a
measurand
Bibliography
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