Number of the records: 1
Residual stresses in cold-coiled helical compression springs for automotive suspensions measured by neutron diffraction
- 1.
SYSNO ASEP 0103253 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Residual stresses in cold-coiled helical compression springs for automotive suspensions measured by neutron diffraction Title Zbytková pnutí v za studena vinutých automobilových pružinách měřená pomocí neutronové difrakce Author(s) Matějíček, Jiří (UFP-V) RID, ORCID
Brand, P. C. (US)
Drews, A. R. (US)
Krause, A. (US)
Lowe-Ma, C. (US)Source Title Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
Roč. 367, 1-2 (2004), s. 306-311Number of pages 6 s. Language eng - English Country US - United States Keywords residual stress, automotive springs, neutron diffraction Subject RIV JB - Sensors, Measurment, Regulation CEZ AV0Z2043910 - UFP-V Annotation Residual stresses in cold-coiled helical compression springs for automotive suspensions were determined at several manufacturing stages using neutron diffraction. These results indicate that the residual stresses in the as-coiled springs are nearly uniaxial with peak values of +/-900MPa and independent of coil position. A factory stress-relieved spring showed the same pattern of stresses, but with the peak values reduced to ~+/-200 MPa. Residual stresses in a spring annealed in a laboratory furnace at 56 K over the normal factory annealing temperature were ~35% lower. The effect of cutting the springs either by electric discharge machining (EDM) or by abusive grinding was also examined. From these data, the smallest spring segment that can yield reliable stress data was determined. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2005
Number of the records: 1