Abstract
Third generation synchrotron X-ray sources such as the European Synchrotron Radiation Facility and the Advanced Photon Source (USA) have made very intense beams of very high energy X-rays available for the first time. At energies in excess of 60 keV penetration lengths of the order of centimetres are possible in most engineering materials. The associated low scattering angles limit the strain measurement directions available at depth. Gauge dimensions as small as microns and sub-second measurement times give the technique unique characteristics, making 2 and 3 dimensional strain mapping economically feasible. The current state of the art is reviewed and the potential assessed, primarily using illustrative case studies made at the ESRF. These include the measurement of near surface strains caused by peening, TIG welding stresses for the development of finite element models, the mapping of crack bridging during fatigue crack growth in Ti/SiC fibre composites and crack field mapping in 3D.
Original language | English |
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Title of host publication | Proceedings of the 6th European Conference on Residual Stresses |
Pages | 1-12 |
Number of pages | 12 |
DOIs | |
Publication status | Published - 2002 |
Externally published | Yes |
Event | European Conference on Residual Stresses (ECRS) 2002 - Coimbra, Portugal Duration: 10 Jul 2002 → 12 Jul 2002 Conference number: 6th |
Publication series
Name | Materials Science Forum |
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Publisher | Trans Tech Publications |
Volume | 404-407 |
ISSN (Print) | 0255-5476 |
Conference
Conference | European Conference on Residual Stresses (ECRS) 2002 |
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Abbreviated title | ECRS 2002 |
Country/Territory | Portugal |
City | Coimbra |
Period | 10/07/02 → 12/07/02 |
Keywords
- Crack-tip stresses
- Metal matrix composites
- Peening
- Synchrotron radiation
- Welding
- X-rays