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Nondestructive Characterization of Residual Stresses on Cylinder Liners and Blocks via X-ray Diffraction Techniques
Technical Paper
2009-01-0423
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It is well known that machining operations produce surface conditions that can either enhance or debit the fatigue life of production components. Furthermore it has been well established that the thermal gradients produced during the solidification process of a casting operation can also generate detrimental residual stress loads. Cast cylinder blocks can sustain life limiting stress gradients from these processes. Due to their complex geometry it has historically been very difficult if not impossible to fully characterize the residual stresses present at critical locations in cylinder blocks. Recent advances in x-ray diffraction (XRD) have reduced the minimum clearance required for an accurate measurement from 200mm to 70mm. This now allows XRD to be used as a non destructive test (NDT) on features such as cylinder liners and bores, bulk heads and assembled journals. These advancements will allow OEM's and their suppliers to improve fatigue life and product quality by characterizing and managing the residual stresses present at various stages of production. Beyond production this technology will allow OEM's to measure residual stresses at different stages of a blocks operational life. Such information can be used to help design engine blocks with superior performance and life expectancy.
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Citation
Ladouceur, J., Pineault, J., and Brauss, M., "Nondestructive Characterization of Residual Stresses on Cylinder Liners and Blocks via X-ray Diffraction Techniques," SAE Technical Paper 2009-01-0423, 2009, https://doi.org/10.4271/2009-01-0423.Also In
References
- Noyan I. C. Cohen J. B. “Residual Stress - Measurement by Diffraction and Interpretation” Springer-Verlag New York 1987
- Cullity B. D. “Elements of X-ray Diffraction” Second Addison-Wesley Reading Massachusetts 1978
- Pineault J.A. Brauss M.E. “Automated Residual Stress Mapping - Quantitative Data on Real Parts” Metal Finishing News 6 May 2005 10 11
- Brauss M.E. “System and Method for Displaying Material Characteristic Information”
- Klug H.P. Alexander L.E. “X-ray Diffraction Procedures For Polycrystalline and Amorphous Materials” Second Wiley-Interscience New York 1974
- Hilley M.E. et.al “Residual Stress Measurement by X-ray Diffraction” SAE J784a SAE 1971
- Pineault J.A. et. al. “X-Ray Diffraction Residual Stress Measurement in Failure Analysis” 11 ASM Handbook ASM International 2002