Experimental Analysis of Fatigue Crack Path for Strained Functionally Graded Materials


  • M. Abdulrazzaq Department of Materials Engineering, College of Engineering, University of Al-qadisiyah, Iraq
  • Mahmoud. A. Hassan Department of Mechanical Engineering, College of Engineering, University of Al-qadisiyah, Iraq




crack paths; FGM. Fatigue vibration.


This paper experimentally discusses crack paths in strained Functionally graded materials under constant loading conditions and vibration fatigue. The objective is to synthesize the body of knowledge on the stability of FGM. The article presents the development, production, and characterization of multi-Al (aluminum), Ni (nickel), and Titanium alloys. FGM it was successfully modified using the powder metallurgical technique. Five-layer FGM samples frequently utilize (Al, Ni), on one end and (Al-Ni-Ti) on the first. FGM sample mechanical characteristics have been investigated using wear and Fatigue testing. The Al/Ni/Titanium FGM compact specimen approaches the yield stress and ultimate stress values, which is regarded as a significant improvement in mechanical qualities with less weight. The test findings are for a constant amplitude load fully reversed with zero mean stress. The stress life approach examined three samples' fatigue characteristics and natural frequency under random vibration.


Kim, E.-J., C.-M. Lee, and D.-H. Kim, Study on the characteristics of functionally graded materials from Ni-20cr to Ti-6Al-4V via directed energy deposition. Journal of Alloys and Compounds, 2023. 955: p. 170263.

Aravind, R., K. Jayakumar, and R.K. Annabattula, Probabilistic investigation into brittle fracture of functionally graded materials using phase-field method. Engineering Fracture Mechanics, 2023: p. 109344.

Wang, Y., et al., Microstructure and nanoindentation properties of high-throughput prepared Ti-Al2O3 functionally graded materials films. Materials Letters, 2023. 337: p. 133966.

Zheng, W., et al., Effects of ceramic material in laser-directed energy deposition of titanium/ceramic functionally graded materials. Journal of Materials Processing Technology, 2023. 317: p. 117992.

Oza, M.J., et al., Developing a hybrid Al–SiC-graphite functionally graded composite material for optimum composition and mechanical properties. Materials Science and Engineering: A, 2021. 805: p. 140625.

Parihar, R.S., S.G. Setti, and R.K. Sahu, Recent advances in the manufacturing processes of functionally graded materials: a review. Science and Engineering of Composite Materials, 2018. 25(2): p. 309-336.

Korde, J.M. and B. Kandasubramanian, Naturally biomimicked smart shape memory hydrogels for biomedical functions. Chemical Engineering Journal, 2020. 379: p. 122430.

Yongming, L., et al., A novel functionally graded material in the Ti–Si–C system. Materials Science and Engineering: A, 2003. 345(1-2): p. 99-105.

Kratina, O., et al., The Effect of Polyglycols on the Fatigue Crack Growth of Silica-Filled Natural Rubber. Fatigue Crack Growth in Rubber Materials: Experiments and Modelling, 2021: p. 39-55.

Gent, A., P. Lindley, and A. Thomas, Cut growth and fatigue of rubbers. I. The relationship between cut growth and fatigue. Journal of Applied Polymer Science, 1964. 8(1): p. 455-466.

Sukumar, N. and J.-H. Prévost, Modeling quasi-static crack growth with the extended finite element method Part I: Computer implementation. International journal of solids and structures, 2003. 40(26): p. 7513-7537.

Daram, P., T. Hiroto, and M. Watanabe, Microstructure and phase evolution of functionally graded multi-materials of Ni–Ti alloy fabricated by laser powder bed fusion process. Journal of Materials Research and Technology, 2023. 23: p. 5559-5572.




How to Cite

M. Abdulrazzaq, and Mahmoud. A. Hassan. 2023. “Experimental Analysis of Fatigue Crack Path for Strained Functionally Graded Materials”. Metallurgical and Materials Engineering 29 (3):1-8. https://doi.org/10.56801/MME1001.