PSI - Issue 13

Andrzej Kurek et al. / Procedia Structural Integrity 13 (2018) 2210–2215 Kurek Andrzejet al. / Structural Integrity Procedia 00 (2018) 000 – 000

2215

6

3. Summary and conclusions

• The new test stand is capable of conducting strain-controlled cyclic torsional fatigue tests on full specimens. • Taking both fitting methods into account the Kurek- Łagoda model gives best results with R 2 =0.9757. • The test stand allows not only for torsional tests but also bending and proportional bending and torsion combinations. Although in the last case it is recommended to use some kind of external 3d extensometer based on digital image correlation (DIC) like Aramis from GOM. Acknowledgement This work has been carried out under the grant of National Science Centre (Poland) no. 2015/19/B/ST8/01115 References ASTM Standard E606-92: Standard practice for strain-controlled fatigue testing. In: Annual book of ASTM standards, Vol. 03.01. ASTM; 1997, pp. 523-37. Basquin, O.H., .1910. The exponential law of endurance tests. Am. Soc. Test. Mater. Proc., Vol. 10, pp. 625-630. Bronstein, I.N.; Semendjajew, K.A., 2004. Handbook of Mathematics, Springer. Berlin, 1157 ps. Chopra, O.K., 1999. Effects of LWR coolant environments of fatigue design curves of austenitic stainless steels. U.S. Nuclear Regulatory Commission. Coffin, L. F. 1954., A study of the effect of cyclic thermal stresses on a ductile metal. Trans ASME, Vol. 76, pp. 931-950. Gorash, Y., Chen H., 2013. On creep-fatigue endurance of TIG-dressed weldments using the linear matching method. Engineering Failure Analysis, vol.34, pp.308-323. Kandil, F. A., 2000. The Determination of Uncertainties in Low Cycle Fatigue Testing, Standards Measurement & Testing Project No. SMT4 CT97-2165, Issue 1, pp. 1-26. Kulesa, A., Kurek, A., Łagoda , T., Achtelik, H., Kluger, K., 2016(a). Low cycle fatigue of steel in strain controlled cyclic bending. Acta Mechanica et Automatica, Vol. 10, issue 1, pp. 62-65.. Kulesa, A., Kurek, A., Łagoda , T., Achtelik, H., Kluger, K., 2016(b). Comparison of 15Mo3 strain curves obtained for strain-controlled cyclic bending and tension-compression tests. Solid State Phenomena, vol.250, pp.85-93. Kurek, A., Koziarska, J., Łagoda , T., 2016. Zastosowanie teorii dużych odkształceń w jednoosiowym rozciąganiu - ściskaniu wybranych metali (EN Application of the theory of large deformation in uniaxial tension compression of selected metals). Energetyka, Tom 11, ss. 673-675. Kurek, M., Łagoda , T., Katzy, D., 2014. Comparison of fatigue characteristics of some selected materials. Material Testing, Vol. 56, Issue 2, pp. 92-95. Langer, B.F., 1962. Design of Pressure Vessels for Low-Cycle Fatigue. ASME J. Basic Eng, Vol.84, pp.389-402. Manson, S. S., 1965. Fatigue: a complex subject - some simple approximation. Experimental Mechanics, Vol. 5, pp. 193-226. Manson, S.S, 1979. Inversion of the strain-life and strain-stress relationships for use in metal fatigue analysis. Fatigue of Engineering Materials and Structures, Vol.1, pp.37-57. Marcisz, E., Niesłony , A., Łagoda , T., 2012. Concept of fatigue for determining characteristics of materials with strengthening. Material Science Forum, Vol. 726, pp.43-48. Niesłony A., Kurek A. , 2012. Influence of the selected fatigue characteristics of the material on calculated fatigue life under variable amplitude loading. Applied Mechanics and Materials, Trans Tech Publications, Vol. 104, pp.197-205. Niesłony , A., Kurek, A., EL Dsoki, Ch., Kaufmann, H., 2012. A Study of Compatibility Between two Classical Fatigue Curve Models based on Some Selected Structural Materials. International Journal of Fatigue, Vol. 39, pp.88-94. Radhakrishnan, V.M., 1992. On bilinearity of Manson-Coffin low-cycle-fatigue relationship. NASA Technical Memorandum 105840, NASA TM-105840, E-7283, NAS 1.15:105840 ,11. Ramberg, W., Osgood, W. R., 1943. Description of stress-strain curves by three parameters. Technical Note No. 902, National Advisory Committee for Aeronautics, Washington DC Walat, K, Łagoda , T, Kurek, M., 2015. Life time assessment of an aluminum alloy under complex low cycle fatigue loading. Material Testing, Vol. 57, Issue 2, pp.160-164