X-Ray Diffraction Residual Stress Measurements for Quality Control Testing
Abstract
This paper present the primary difficulties which are associated with the obtaining and interpreting surface X-ray diffraction residual stress results: the surface stresses may be identical for the shoot peening, nitriding and grinding parameters; many machining and grinding metal removal processes can generate local fluctuations in the surface residual stress; for many material removal and surface treatment processes the depth of penetration of the X-ray beam is quite shallow and can cause experimental error in the measurement of the surface stress. The stress distributions by conventional and abusive grinding of 4340 steel, the surface residual stresses for 5160 steel leaf springs shot peened may prohibit the use of non-destructive surface stress measurements.
References
[2]. M. Rîpă, C. Gheorghieş, L. Deleanu, I. Crudu, 2004, X-ray Diffractometry Analisys in Rolling-Sliding Wear Tests, Bul. Inst. Pol. Iaşi, Tom L(LIV), Fasc. 6A, p. 267-72.
[3]. Fitzpatrick, M.E., Fry, A.T., Kandil, F.A., Shackleton, J., 2002, NPL Good Practice Guide No. 52:Determination of Residual Stresses by X-Ray Diffraction.
[4]. Prevey, P.S., 1987, The measurement of Subsurface Residual Stress and Cold Work Distributions in Nickel Base Alloys, Residual Stress in Design, Process and Materials Selection, ASM International, p. 11-19.
[5]. Fry, A.T., 2002, Evaluation of the Repetability of Residual Stress Measurements Using X-Ray Diffraction, Measurement Note MATC (MN) 019.
[6]. Fry, A.T., Kandil, F.A., 2002, A Study of Parameters Affecting the Quality of Residual Stress Measurments using XRD, ECRS 6 Paper, Coimbra, Portugal.
[7]. Kandil, F.A. et al., 2000, Manual of Codes of Practice for the Determination of Uncertainties in Mechanical Tests on Metallic Materials, Project UNCERT, Standards Measurement and Testing Programme.
[8]. C.-P. Papadatu, I. Stefanescu, C. Gheorghies, 2005, Experimental Study of Behaviour of Some Non-Conventional Treated Steels During Friction Process, The Annals of Dunarea de Jos University of Galati, Fascicle VIII, Tribology, ISSN 1221-4590, p. 58-64.
[9]. C. Gheorghies, D. Scarpete, 2001, A fast method for tribological characterisation of bearing steels, Proc. of the Tribology-Conference, 25-26 oct.2001, Sofia, Bulgaria, p. 3-7.
[10]. C. Spanu, C. Gheorghies, 1999, Structural Changes in Superficial Layer During Passing from Elastic to Elasto-Plastic Deformation, Proc. of The 3-rd International Conference of Tribology, Balkantrib’99, Sinaia, Vol I, p. 165-172.
