Е-Публикации
Технически университет - София

Abstract: Shape-memory alloys have various applications in different fields including medicine, robotics, aeronautics, and micro-electromechanical systems. This paper discusses shrink-fit joints formed by shape-memory alloy elements and their application for the axial fixation of mechanical components. The use of shape-memory alloys gives the shrink-fits some specific features: ease of assembly, insensitivity to tooling and human error, chemical resistance, low cost, etc. The friction force created between the components is experimentally investigated as a function of two parameters—the substrate diameter and the surface roughness (Ra) of one of the joined elements. The results of the experiments are presented analytically and graphically. Conclusions are drawn regarding the behavior of the studied shrink-fits. They can be beneficial to any engineering project making it less sensitive to manufacturing variations.

References

1. Lexellent C. Shape-Memory Alloys Handbook John Wiley & Sons Hoboken, NJ, USA 2013
2. Wu M. Schetky L. Industrial applications for shape memory alloys Proceedings of the International Conference on Shape Memory and Superelastic Technologies Pacific Grove, CA, USA 30 April–4 May 2000 171 182
3. Jani J.M. Leary M. Subic A. Gibson M.A. A review of shape memory alloy research, applications and opportunities Mater. Des. (1980–2015) 2014 56 1078 1113 10.1016/j.matdes.2013.11.084
4. Machado L.G. Savi M.A. Medical applications of shape memory alloys Braz. J. Med. Biol. Res. 2003 36 683 691 10.1590/S0100-879X2003000600001 12792695
5. Chau E.T.F. Friend C.M. Allen D.M. Hora J. Webster J.R. A technical and economic appraisal of shape memory alloys for aerospace applications Mater. Sci. Eng. A 2006 438–440 589 592 10.1016/j.msea.2006.02.201
6. Otsuka K. Wayman C.M. Shape Memory Materials Cambridge University Press Cambridge, UK 1999
7. Lagoudas D. Shape Memory Alloys—Modeling and Engineering Applications Springer Science+Business Media, LLC New York, NY, USA 2008
8. Intrinsic Devices, Inc. Shape Memory Alloy Fasteners Available online: https://www.intrinsicdevices.com/Shape_Memory_Alloy_Fasteners.pdf (accessed on 12 May 2024)
9. Nedev T. Lilov A. Mechanical Engineering Soft Trade Sofia, Bulgaria 2011
10. Artobolevski I. Theory of Mechanisms and Machines 1975 Nauka Moscow, Russia 1975
11. Kotseva G. Georgieva V. Gyoshev S. Investigation of Tribological Parameters of 3D Printed Samples Proceedings of the VIII International Scientific Conference Winter Season INDUSTRY 4.0 Borovets, Bulgaria 6–9 December 2023 255 258
12. Borden T. Shape-Memory Alloys: Forming a Tight Fit Mech. Eng. 1991 113 67 72
13. Todorov T. Nikolov R. Ralev Y. Experimental Investigations of Shape Memory Alloys by Specialized Evaluation Setup Bulg J. Eng. Des. 2016
14. Topalski S. Martensitic Transformation by Deformation in Monocrystalline Cu-Al-Ni Shape Memory Alloy Scientific Papers of University of Russe University of Russe Russe, Bulgaria 2008 Volume 47 Series 2
15. Intrinsic Devices Shape Memory Fasteners Available online: https://intrinsicdevices.com (accessed on 12 May 2024)
16. Dimitrov L. Principles of Mechanical Engineering Design. Design of Mechanical Components Heron Press Sofia, UK 2009

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