Residual Stress Analysis on Thin Metal Sheets Using the Incremental Hole Drilling Method – Fundamentals and Validation
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The aim of the present work is to broaden the scope of application of the hole drilling method and to enable reliable residual stress measurements on thin metal sheets. In this context the focus is on characterization of residual stresses on brazed sheet metal constructions. In this specific case coarse grains and low sheet thickness are strong restrictions for standard residual stress measurement methods. However, in the current work it is shown that it is possible to extend the scope of application of the incremental hole drilling method to thin components. For this purpose, calibration coefficient matrices for sheets having thicknesses of 0.7 mm, 1 mm and 1.6 mm have been calculated using finite element analysis. Furthermore, by measuring residual stresses of bent metal sheets, the determined coefficients and measurement procedure feasibility have been validated. Finally, the application of the incremental hole drilling method on an austenitic-ferritic brazed sheet metal construction is demonstrated.
KeywordsHole drilling Metal sheet Thin Brazing Residual stress
This project was funded by Research Association for Steel Application FOSTA according to a decision of the German Federal Parliament under Grant Nr. IGF 18157 N/2, which is gratefully acknowledged. The authors are also grateful for the support of “Institute of Materials Science” (Institut für Werkstoffkunde) of the Leibniz Universität Hannover, the contributions of the industry partners and of the students David Diebel and Michael Jousse.
- 3.ASTM E837-13a (2013) Standard test method for determining residual stresses by the hole-drilling strain-gage method. ASTM International, West Conshohocken. www.astm.org
- 5.Schuster S, Pagenkopf J, Gibmeier J (2016) Local residual stress analysis on deep drawn cups by means of the incremental hole-drilling method. Residual stresses 2016: ICRS-10. Mater Res Proc 2:187–192Google Scholar
- 6.Nau A., Scholtes B. (2015): Erhöhung der Komponentensicherheit durch verbesserte Verfahren zur Eigenspannungsanalyse, Abschlussbericht, Reaktorsicherheitsforschung-Vorhaben-Nr 1501460BGoogle Scholar
- 7.Vishay (2010): Measurement of residual stresses by the hole-drilling strain gage method. Vishay micro-measurements. Technical Note TN-503-6. Available at http://www.vishaypg.com/doc?11053. Accessed 6 June 2018
- 9.A. Magnier (2018, in review): Residual stress analysis in polymer materials using the hole drilling method – basic principles and application. PhD Thesis, University of KasselGoogle Scholar