PSI - Issue 13

Lesiuk G. et al. / Procedia Structural Integrity 13 (2018) 1595–1599 Author name / Structural Integrity Procedia 00 (2018) 000 – 000

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Fig. 6. Fatigue crack growth curves for 80ShA and 90ShA (total strain  =15%)

3. Conclusions

The following conclusions from the test results of PUR elastomers can be drawn:  Static tensile properties (in each point of tests) were higher for 90ShA hardness level,

 Fracture toughness equivalent – EWF energy was higher for 90ShA material in comparison with 80 ShA,  Increase of the precritical fatigue crack growth period is dependent from hardness level; fatigue crack growth rate was higher for 90ShA material in comparison with 80ShA.

Acknowledgements

1. This work was financial supported (in part) by the Wroclaw University of Science and Technology – Department of Mechanics, Materials Science and Engineering internal, fundamental research program - 0401/0029/17. 2. The publication has been prepared as a part of the Support Programme of the Partnership between Higher Education and Science and Business Activity Sector financed by City of Wroclaw. N. Mehmood, T. Mao, G. Bhupati, „Fracture Mechanical Trouser Tear Testing In Thin Polymer Films”, Department of Mechanical En gineering Blekinge Institute of Technology, Karlskrona, Sweden 2012, Str. 12-17. J. Gamez-Perez, M. Sanchez-Soto, J. Ignacio Velasco, M. LI. Maspoch, The Essential Work of Fracture (EWF) method – Analyzing the Post – Yielding Fracture Mechanics of polymers, Engineering Failure Analysis, December 2009. Arkhireyeva, A., and S. Hashemi. "Determination of fracture toughness of poly (ethylene terephthalate) film by essential work of fracture and J integral measurements." Plastics, rubber and composites 30.7 (2001): 337-350. Clutton, E. (2001). Essential work of fracture. In European Structural Integrity Society (Vol. 28, pp. 177-195). Elsevier. Lesiuk, G., Myszka, W., Snowacki, K., & Junik, K. (2016). Badania wytrzymałościowe elastomerów poliuretanowych stosowanych w przemyś le motoryzacyjnym z wykorzystaniem metod mechaniki pękania. Autobusy: technika, eksploatacja, systemy transportowe, 17. Thor Thorup, Characterisation of Fatigue Crack Growth in Silicone for DeapTechnology, Polymer Testing, Proceedings of International Mechanical Engineering Congress & Exposition, 2012, vol. 3, s. 627-634. References