Genetic programming modeling of the critical size of inclusions
University of Nova Gorica, Slovenia.
DOI:
https://doi.org/10.7494/cmms.2011.1.0310
Abstract:
Spring steel quality has a major impact on spring life. Spring steel quality depends also on the inclusions presence. 7 dynamically tested and broken springs (51CrV4) were analyzed. The dynamic test result is the number of the cycles before spring breakage. We were interested in dependency of the inclusion size and the distance from the surface of the inclusion on the spring tool life. In the paper the genetic programming method was used. In the proposed concept the mathematical models for spring life undergo adaptation. The results show that the proposed concept can be used in practice.
Cite as:
Kovačič, M., & Šarler, B. (2011). Genetic programming modeling of the critical size of inclusions. Computer Methods in Materials Science, 11(1), 41 – 45. https://doi.org/10.7494/cmms.2011.1.0310
Article (PDF):

Keywords:
Genetic programming, Inclusion, Spring life, Modelling
References:
Kovačič, M., Šarler, B., 2009, Application of the genetic programming for increasing the soft annealing productivity in steel industry. Materials and Manufacturing Processes, 24(3), 369-374.
Kovačič, M., Uratnik, P., Brezočnik, M., Turk, R., 2007. Prediction of the bending capability of rolled metal sheet by genetic programming, Materials and Manufacturing Processes, 22, 634-640.
Koza, J.R., 1999, Genetic programming III, Morgan Kaufmann. San Francisco, 3-18.
Murakami, Y., Kodama, S., Konuma, S., 1989, Quantitative evaluation of effects of non-metallic inclusions on fatigue strength of high strength steels. I: Basic fatigue mechanism and evaluation of correlation between the fatigue fracture stress and the size and location of non-metallic inclusions, International Journal of Fatigue. 11(5), 291-298.
Murakami, Y., 2002, Spring Steels, Metal Fatigue, 163-183.
Šuštaršič, B., Senčič, B., Arzenšek, B., 2006, Notch effect on fatigue strength of 51CrV4Mo spring steel, Proc. Conf. 6th International Conference on Fatigue and Fracture -NT2F6, eds. Šuštaršič, B., Jenko, M., Brdo pri Kranju. 8 pages (CD-ROM).
Šuštaršič, B., Senčič, B., Leskovšek, V., 2008, Fatigue strength of spring steels and life-time prediction of leaf springs. Proc. Conf. Assessment of Reliability of Materials and Structures RELMAS ‘2008, eds, Melnikov, B.E.. Petinov, S.V., Hangu, Y.E., St. Petersburg, 361-366.