International Journal of Vehicle Structures and Systems

Open Access Open Access  Restricted Access Subscription Access

Comparative Approaches for Fatigue Life Estimation of Aluminium Alloy for Aerospace Applications


Affiliations
1 Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India
 

   Subscribe/Renew Journal


The objective of this paper is to estimate the fatigue life behaviour of Al 7075-T6 using experimental and numerical methods for the purpose of aerospace applications. In this paper, initially static properties for the specimens are determined using Universal Testing Machine (UTM) under tensile loading. The cyclic bending load is applied on the material using fatigue test and the dynamic properties are determined. Experimental and numerical studies are carried out to determine the fatigue strength and endurance limit values of aluminium alloy 7075-T6 at different types of loading. The fatigue strength and structural integrity of the aluminium alloy 7075 - T6 are investigated using S-N curve. In numerical simulation, the reference model of this paper has been modelled by CATIA and thereby it is imported into ANSYS workbench 16.2 to investigate the stress distribution and number of cycles to failure of an aluminium alloy 7075-T6 under tensile loading. The mechanical properties are evaluated using both the approaches and finally the comparative study is carried out.

Keywords

Aluminium Alloy 7075-T6, Tensile Test, Fatigue Test, S-N Curve, Endurance Limit, Goodman Equation.
User
Subscription Login to verify subscription
Notifications
Font Size

  • J.F. Tu and A.G. Paleocrassas. 2011. Fatigue crack fusion in thin-sheet aluminum alloys AA7075-T6 using low-speed fibre laser welding, J. Materials Processing Tech., 211, 95-102. https://doi.org/10.1016/j.jmatprotec.2010. 09.001.

  • K.N. Kumar, R. Vijayanandh, M.S. Kumar, G.R. Kumar and M. Bak. 2017. Experimental and numerical analysis on fatigue life of aluminium alloy 7075-T6, Proc. Int. Conf. in Recent Innovations in Production Engg., MIT, Chennai.

  • R.H. Oskouei and R.N. Ibrahim. 2012. The effect of clamping compressive stresses on the fatigue life of Al 7075-T6 bolted plates at different temperatures, Materials and Design, 34, 90-97. https://doi.org/10.1016/j.matdes.2011.07.073.

  • A.B. Harman and A.N. Rider. 2013. On the fatigue durability of clad 7075-T6 aluminium alloy bonded joints representative of aircraft repair, Int. J. Adhesion and Adhesives, 44, 144-156. https://doi.org/10.1016/j.ijadhadh.2013.01.009.

  • F. Benyahia, L. Aminallah, A. Albedah, B.B. Bouiadjra and T. Achour. 2015. Experimental and numerical analysis of bonded composite patch repair in aluminum alloy 7075 T6, Materials and Design, 73, 67-73. https://doi.org/10.1016/j.matdes.2015.02.009.

  • R.H. Oskouei and R.N. Ibrahim. 2012. An investigation on the fatigue behaviour of Al 7075-T6 coated with titanium nitride using physical vapour deposition process, Materials and Design, 39, 294-302. https://doi.org/10.1016/j.matdes.2012.02.056.

  • H.S. Turkmen, R.E. Loge, P.R. Dawson and M.P. Miller. 2003. On the mechanical behaviour of AA 7075-T6 during cyclic loading, Int. J. Fatigue, 25, 267-281. https://doi.org/10.1016/S0142-1123(02)00149-4.

  • J.C. Newman, E.L. Anagnostou and D. Rusk. 2014. Fatigue and crack-growth analyses on 7075-T651 aluminum alloy coupons under constant and variableamplitude loading, Int. J. Fatigue, 62, 133-143. https://doi.org/10.1016/j.ijfatigue.2013.04.020.

  • H. Taghizadeh, T.N. Chakherlou, H. Ghorbani and A. Mohammadpour. 2015. Prediction of fatigue life in cold expanded fastener holes subjected to bolt tightening in Al alloy 7075-T6 plate, Int. J. Mech. Sci., 90, 6-15. https://doi.org/10.1016/j.ijmecsci.2014.10.026.

  • E. Zalnezhad and A.A.D. Sarhan. 2014. A fuzzy logic predictive model for better surface roughness of Ti-Ti N coating on AL7075-T6 alloy for longer fretting fatigue life, Measurement, 49, 256-265. https://doi.org/10.1016/j.measurement.2013.11.042.

  • T. Zhao and Y. Jiang. 2008. Fatigue of 7075-T651 aluminium alloy, Int. J. Fatigue, 30, 834-849. https://doi.org/10.1016/j.ijfatigue.2007.07.005.

  • E. Donnelly and D. Nelson.2002. A study of small crack growth in aluminium alloy 7075-T6, Int. J. Fatigue, 24 1175-89. https://doi.org/10.1016/S01421123(02)00025-7.

  • S.Q. Hou, X.J. Cai and J.Q. Xu. 2015. A life evaluation formula for high cycle fatigue under uniaxial and multi axial loadings with mean stresses, Int. J. Mech. Sci., 93, 229-239. https://doi.org/10.1016/j.ijmecsci.2015.02.002.

  • D.C. Chen, C.S. You and F.Y. Gao. 2014. Analysis and experiment of 7075 aluminium alloy tensile test, Proc. Engg., 81, 1252-1258. https://doi.org/10.1016/j.proeng.2014.10.106.

  • S.R. Shinde, C.B. Elliott and D.W. Hoeppner. 2007. Quantitative analysis of fretting fatigue degradation in 7075-T6 aluminium alloy, Tribology Int., 40, 542-547. https://doi.org/10.1016/j.triboint.2006.05.009.

  • J. Muthu. 2014. Fatigue life of 7075-T6 aluminium alloy under fretting condition, Theoretical and Applied Fracture Mechanics, 74, 200-208. https://doi.org/10.1016/j.tafmec.2014.09.006.

  • T.J Harrison, B.R Crawford, M. Janardhana and G. Clark. 2011. Differing microstructural properties of 7075-T6 sheet and 7075-T651 extruded aluminium alloy, Proc. Engg., 10, 3117-3121. https://doi.org/10.1016/j.proeng.2011.04.516.

  • H.E. Misak, V.Y. Perel, V. Sabelkin and S. Mall. 2013. Crack growth behaviour of 7075-T6 under biaxial tension-tension fatigue, Int. J. Fatigue, 55, 158-165. https://doi.org/10.1016/j.ijfatigue.2013.06.003.

  • H.E. Misak, V.Y. Perel, V. Sabelkin and S. Mall. 2013. Corrosion fatigue crack growth behaviour of 7075-T6 under biaxial tension-tension cyclic loading condition, Engg. Fracture Mechanics, 106, 38-48. https://doi.org/10.1016/j.engfracmech.2013.04.004.

  • M.A. Rahmat, R.N. Ibrahim and R.H. Oskouei. 2014. A study on the combined effect of notch and fretting on the fatigue life behaviour of Al 7075-T6, Materials and Design, 60, 136-145.

  • S.M. Kumar, R. Pramod, M.E.S. Kumar and H.K. Govindaraju. 2014. Evaluation of fracture toughness and mechanical properties of aluminium alloy 7075, T6 with nickel coating, Proc. Engg., 97, 178-185.

  • C. Sun, Z. Lei and Y. Hong. 2014. Effects of stress ratio on crack growth rate and fatigue strength for high cycle and very-high-cycle fatigue of metallic materials, Mechanics of Materials, 69, 227-236. https://doi.org/10.1016/j.mechmat.2013.10.007.

  • C.M. Abreu, M.J. Cristóbal, R. Figueroa and G. Pena. 2015. Wear and corrosion performance of two different tempers (T6 andT73) of AA7075 aluminium alloy after nitrogen implantation, Applied Surface Sci., 327, 51-61. https://doi.org/10.1016/j.apsusc.2014.11.111.

  • R. Vijayanandh, G.R. Kumar, M.S. Kumar, M. Karthick and T. Ramganesh. 2016. Fatigue life estimation of aircraft engine compressor with suitable material selection, Proc. 10th Int. Conf. Intelligent Systems and Control, Coimbatore, India. https://doi.org/10.1109/ISCO.2016.7727055.

  • G.R. Kumar, R. Vijayanandh, M.S. Kumar and S.S. Kumar. 2017. Experimental testing and numerical simulation on natural composite for aerospace applications, Proc. 2nd Int. Conf. Condensed Matter & Applied Physics, Bikaner, Rajasthan, India. https://doi.org/10.1063/1.5032892.


Abstract Views: 462

PDF Views: 217




  • Comparative Approaches for Fatigue Life Estimation of Aluminium Alloy for Aerospace Applications

Abstract Views: 462  |  PDF Views: 217

Authors

R. Vijayanandh
Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India
K. Naveen Kumar
Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India
G. Raj Kumar
Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India
B. Sanjeev
Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India
Hariharan Balachander
Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India
S. Guru Prasad
Dept. of Aero. Engg., Kumaraguru College of Tech., Coimbatore, India

Abstract


The objective of this paper is to estimate the fatigue life behaviour of Al 7075-T6 using experimental and numerical methods for the purpose of aerospace applications. In this paper, initially static properties for the specimens are determined using Universal Testing Machine (UTM) under tensile loading. The cyclic bending load is applied on the material using fatigue test and the dynamic properties are determined. Experimental and numerical studies are carried out to determine the fatigue strength and endurance limit values of aluminium alloy 7075-T6 at different types of loading. The fatigue strength and structural integrity of the aluminium alloy 7075 - T6 are investigated using S-N curve. In numerical simulation, the reference model of this paper has been modelled by CATIA and thereby it is imported into ANSYS workbench 16.2 to investigate the stress distribution and number of cycles to failure of an aluminium alloy 7075-T6 under tensile loading. The mechanical properties are evaluated using both the approaches and finally the comparative study is carried out.

Keywords


Aluminium Alloy 7075-T6, Tensile Test, Fatigue Test, S-N Curve, Endurance Limit, Goodman Equation.

References





DOI: https://doi.org/10.4273/ijvss.10.4.11