PSI - Issue 46

Raviraj Verma et al. / Procedia Structural Integrity 46 (2023) 175–181 Raviraj Verma/ Structural Integrity Procedia 00 (2021) 000–000

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4. Conclusion In the current studies, fracture behaviour and high cycle fatigue response of Ti-6Al-4V alloy are analysed using XFEM and validated using experimental data. In the simulation, the responsible stress distribution around the critical locations are recognized and the following conclusions are made based on the present work.  The fracture initiation was observed at the center and propagated towards the specimen’s edge, followed by the specimen’s interior. The delamination is the representation of the crack initiation, which is governed by level set . The stress contour map has revealed the distribution on the crack front, which resembles well with experimentally obtained material’s properties.  Estimated Fatigue-life based on stress-life criteria ‘Basquin’s Law’ as endurance is observed well within the yielding.  The observed endurance limit has been ~ 600 MPa ( ��� ) for stress ratio R 0.1, whereas ~ 560 MPa ( ��� ) has been observed in case of stress ratio R 0.  The simulation results revealed that the material might not sustain the cyclic loading under the revered loading scenario. It is because of the presence of acicular metastable martensitic phases in the microstructure of Ti6Al4V. References Alshoaibi, Abdulnaser M., and Yahya Ali Fageehi. 2021. “Simulation of Quasi-Static Crack Propagation by Adaptive Finite Element Method.” Metals 11(1): 1–16. Borrego, L. P. et al. 2018. “A Study of Fatigue Notch Sensibility on Titanium Alloy TiAl6V4 Parts Manufactured by Selective Laser Melting.” Procedia Structural Integrity 13: 1000–1005. Company, RMI Titanium. 2000. “Titanium Alloy Guide.” : 48. https://www.spacematdb.com/spacemat/manudatasheets/TITANIUM ALLOY GUIDE.pdf. Donachie, Matthew J. Jr. 2000. Titanium: A Technical Guide . 2nd ed. ASM International. https://www.asminternational.org/search/- /journal_content/56/10192/06112G/PUBLICATION. Fischer, P. et al. 2003. “Sintering of Commercially Pure Titanium Powder with a Nd:YAG Laser Source.” Acta Materialia 51(6): 1651–62. Kumar, Pankaj, Himanshu Pathak, and Akhilendra Singh. 2021. “Fatigue Crack Growth Behavior of Thermo-Mechanically Processed AA 5754: Experiment and Extended Finite Element Method Simulation.” Mechanics of Advanced Materials and Structures 28(1): 88–101. https://doi.org/10.1080/15376494.2018.1549294. Kumar, Pankaj, and Akhilendra Singh. 2019. “Evaluation of Strain Controlled Fatigue and Crack Growth Behaviour of Al–3.4Mg Alloy BT - Mechanical Fatigue of Metals.” In eds. José A F O Correia, Abílio M P De Jesus, António Augusto Fernandes, and Rui Calçada. Cham: Springer International Publishing, 147–54. Lewandowski, John J., and Mohsen Seifi. 2016. “Metal Additive Manufacturing: A Review of Mechanical Properties.” Annual Review of Materials Research 46: 151–86. Rohit, G, J M Prajapati, and V B Patel. 2020. “Coupling of Finite Element and Meshfree Method for Structure Mechanics Application: A Review.” INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS 17(4). Shipley, H. et al. 2018. “Optimisation of Process Parameters to Address Fundamental Challenges during Selective Laser Melting of Ti-6Al-4V: A Review.” International Journal of Machine Tools and Manufacture 128(January): 1–20. https://doi.org/10.1016/j.ijmachtools.2018.01.003. Singh, S. K., I. V. Singh, B. K. Mishra, and G. Bhardwaj. 2019. “Analysis of Cracked Functionally Graded Material Plates Using XIGA Based on Generalized Higher-Order Shear Deformation Theory.” Composite Structures 225(April): 111038. https://doi.org/10.1016/j.compstruct.2019.111038. Suresh, S. 1998. Fatigue of Materials . Second Edi. Cambridge, UK: Cambridge University Press. http://ebooks.cambridge.org/ref/id/CBO9780511806575. Tolochko, Nikolay K. et al. 2000. “Absorptance of Powder Materials Suitable for Laser Sintering.” Rapid Prototyping Journal 6(3): 155–61. https://www.emerald.com/insight/content/doi/10.1108/13552540010337029/full/html. Upadhyay, Bhavik D., Sunil S. Sonigra, and Sachin D. Daxini. 2021. “Numerical Analysis Perspective in Structural Shape Optimization: A