Determination of Residuals Stresses Induced by the Autofrettage Treatment by the X-Rays Diffraction Method
- 1 Laboratory of the Electromechanicaly Engineering Badji Mokhtar-Annaba University, Annaba, Algeria
- 2 Laboratory of the Mechanical Systems, Path, Engineering of the Mechanical Systems, Option Structure and Production Ministry of the National Defense, School Military Polytechnic EMP, Alger, Algeria
- 3 Laboratory of the Electromechanicaly Engineering Badji Mokhtar-Annaba University, Annaba, Algeria
Abstract
Some meaningful advances have been made these last years to value precise and reliable way the residual stresses experimentally created by the autofrettage. The autofrettage process is used widely to introduce residual stresses into thick walled tubes; traditionally residual stresses have been measured using the Sachs method destructive or non-destructive methods. In this paper we describe the application of the X-rays diffraction; this technique permits to justify the presence of the compressive tangential residual stresses, and to value their distribution after two different autofrettage internal pressures loading. The results show that there is a large difference in the residual stresses find in the different autofrettege pressure. One can see the influence of the autofrettage’s pressure quantity on residual stresses created in the thickness of the test tubes.
- B. Avitzur, “Determination of Residual Stress Distributions in Autofrettaged Tubing,” International Journal of Pressure Vessels and Piping, Vol. 31, No. 3, 1988, pp. 147-157. doi:10.1016/0308-0161(88)90003-8
- G. A. Webster and A. N. Ezeilo, “Residual Stress Distributions and Their Influence on Fatigue Lifetimes,” International Journal of Fatigue, Vol. 23, Suppl. 1, 2001, pp. S375-S383. doi:10.1016/S0142-1123(01)00133-5
- S. M. Aceves, J. Martinez-Frias and F. Espinosa-Loza, “Certification Testing and Demonstration of Insulated Pressure Vessel for Vehicular Hydrogen Storage,” International Journal of Hydrogen Energy, Vol. 31, No. 15, 2006, pp. 2274-2283. doi:10.1016/j.ijhydene.2006.02.019
- J. M. Alegre, P. Bravo and M. Preciado, “Fatigue Behaviour of an Autofrettaged High-Pressure Vessel for the Food Industry,” Engineering Failure Analysis, Vol. 14, No. 2, 2007, pp. 396-407. doi:10.1016/j.engfailanal.2006.02.015
- H. O. Fuchs, “Techniques of Surface Stressing to Avoid Fatigue,” pp. 197-229.
- J. Faisandier and T. Coll, “Mécanisme Hydrauliques et Pneumatiques,” 8ème Edition, Ecole d’Ingénieur des Arts et Métiers et de Ecole National Supérieur de l’Aéronautique, Paris, 1999.
- D. George and D. J. Smith, “The Application of the Deep Hole Technique for Measuring Residual Stresses in an Autofrettaged Tube,” Proceedings of PVP 2000, Seattle, 23-27 July 2000.
- M. Certiti, “Apport de la Diffraction des Neutron a l’Analyse des Contraintes Interne,” PhD Thèse, Science Chimiques, Université de Paris sud, Centre d’Orsay, 2004.
- M. R. Hill, “Determination of Residual Stress Based on the Estimation of Eigenstrain,” PhD Thesis, Stanford University, Stanford, 1996.
- P. J. Withers and H. K. D. H. Bhadeshia, “Residual Stress Part 1—Measurement Techniques,” Materials Science and Technology, Vol. 17, No. 4, 2001, pp. 355-365.
- G. A. Webster and A. N. Ezeilo, “Residual Stress Distributions and Their Influence on Fatigue Lifetimes,” International Journal of Fatigue, Vol. 23, Suppl. 1, 2001, pp. S375-S383. doi:10.1016/S0142-1123(01)00133-5