PSI - Issue 47

Daniela Scorza et al. / Procedia Structural Integrity 47 (2023) 30–36 Scorza et al. / Structural Integrity Procedia 00 (2023) 000–000

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4. Conclusions In the present paper, the Mixed Mode (I+II) static bending behaviour of an edge-cracked cantilever nanobeam has been investigated by means of the SDM. The stiffness of the cracked transversal section has been computed by exploiting both the Griffith energy criterion and the conventional Linear Elastic Fracture Mechanics. It has been found that: • by increasing the crack severity, the deflection increases for all the examined values of crack angle, with a maximum increment when 0 .0 θ = ° ; • for 05 . ξ = , the difference in terms of deflection of the edge-cracked nanobeam with respect to the intact nanobeam decreases by increasing the crack angle. Acknowledgements The work of Camilla Ronchei, Andrea Zanichelli and Sabrina Vantadori is supported by Italian Ministry of University and Research (P.R.I.N. National Grant 2020, Project code 2020EBLPLS; University of Parma Research Unit). References Chakraverty S., 2021. Nano Scaled Structural Problems - Static and Dynamic Behaviors. Snehashish Chakraverty (Ed.). AIP Publishing Publisher, Melville, New York. Deng, Y., Barnoush, A., 2018. Hydrogen embrittlement revealed via novel in situ fracture experiments using notched micro-cantilever specimens. Acta Materialia 142: 236-247. Gross, B., Srawley, J.E., 1965. Stress-intensity factors for single-edge-notch specimens in bending or combined bending and tension by boundary collocation of a stress function NASA, Technical Note D-2603. Iqbal, F., Ast, J., Göken, M., Durst, K., 2012. In situ micro-cantilever tests to study fracture properties of NiAl single crystals. Acta Materialia 60: 1193-1200. Jaya, B.N., Kirchlechner, C., Dehm, G., 2015. Can microscale fracture tests provide reliable fracture toughness values? A case study in silicon. Journal of Materials Research 30 (5): 686-698. Khalid, A.R., Rizwan, S.A., Hanif, U., Hameed, M.H., 2016. Effect of Mixing Time on Flowability and Slump Retention of Self-Compacting Paste System Incorporating Various Secondary Raw Materials. Arabian Journal for Science and Engineering 41: 1283-1290. Matoy, K., Schönherr, H., Detzel, T., Schöberl, T., Pippan, R., Motz, C., Dehm, G., 2009. A comparative micro-cantilever study of the mechanical behavior of silicon based passivation films. Thin Solid Films 518: 247-256. Naher, S., Brabazon, D., Looney, L., 2003. Simulation of the stir casting process. Journal of Materials Processing Technology 143-144: 567-571. Nawar, M.T., El-Awady, K.A., Shehab, H.K., Eisa, A.S., 2021. Enhancement of blast resistance of r.C beams using micro/nano silica in the presence of steel fibers. Frattura ed Integrita Strutturale 15: 259-280. Nayak, P.H., Srinivas, H.K., Nagaral, M., Auradi, V., 2019. Characterization and tensile fractography of nano ZrO2reinforced copper-zinc alloy composites. Frattura ed Integrita Strutturale 13: 370-376. Rachid, H.B., Benali, B., Noureddine, D., 2020. Three-dimensional numerical analysis of a joint bonded reinforced with silica nanoparticles (SiO2). Frattura ed Integrita Strutturale 14: 128-136. Rahmanzadeh, B., Rahmani, K., Piroti, S., 2018. Experimental study of the effect of water-cement ratio on compressive strength, abrasion resistance, porosity and permeability of Nano silica concrete. Frattura ed Integrita Strutturale 12: 16-24. Ravikumar, M., Naik, R., 2022. Impact of nano sized SiC and Gr on mechanical properties of aerospace grade Al7075 composites. Frattura ed Integrita Strutturale 16: 439-447. Santos, P., Maceiras, A., Valvez, S., Reis, P.N.B., 2021. Mechanical characterization of different epoxy resins enhanced with carbon nanofibers. Frattura ed Integrita Strutturale 15: 198-212. Scorza, D., Vantadori, S., Luciano, R., 2021. Nanobeams with internal discontinuities: A local/nonlocal approach. Nanomaterials 11: art. no. 2651. Scorza, D., Luciano, R., Vantadori, S., 2022. Fracture behaviour of nanobeams through Two-Phase Local/Nonlocal Stress-Driven model. Composite Structures 280; art. no. 114957. Scorza, D., Luciano, R., Caporale, A., Vantadori, S., 2023. Nonlocal analysis of edge-cracked nanobeams under Mode I and Mixed-Mode (I+II) static loading, Fatigue and Fracture of Engineering Materials and Structures, 1-17. doi: 10.1111/ffe.13936 Wilson, W.K., 1969. On combined mode fracture mechanics. Research report 69–1E7-FMECH-R1. Pittsburgh: Westinghouse Research Laboratories.