The effects of welded clips on fatigue crack growth in AA6156 T6 panels
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2022
Authors
Sedmak, AleksandarGrbović, Aleksandar
Petrovski, Blagoj
Sghayer, Abulgasem
Sedmak, Simon
Berto, Filippo
Đurđević, A.
Article (Published version)
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Fatigue crack growth in different panels, made of AA6156 T6, was investigated experimentally and numerically. Three different types of panels were used, simple one, so-called base metal (BM), panel with 4 welded stringers and panel with 4 welded stringers and 3 welded clips. Experimental investigation indicated benefits of stringers, especially in respect to residual life, since the number of cycles were more than doubled (420 Kcyc vs 195 Kcyc for initial crack length 14 mm), but that was not the case for panels with clips (220 Kcyc). Experimental investigation was also performed on panels with longer cracks (75 mm) to check the effect of initial crack length in the case of BM and panels with 4 stringers, showing practically the same effect of stringers on residual life (95 Kcyc vs 50 Kcyc). Then, fatigue crack growth in panels was simulated numerically using xFEM. Numerical simulation indicated the same trend and effectiveness of stringers, with sufficient agreement with experimental ...results for BM and panels with stringers only. Anyhow in the case of clips panels with 4 stringers and 3 clips, number of cycles for panel with additional 3-clips was higher than for panel with just 4-stringer, (278 Kcyc vs 265 Kcyc), improving fatigue life for cca 5 %, contrary to experimental results.
Source:
International Journal of Fatigue, 2022, 165Publisher:
- Elsevier Ltd
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200105 (University of Belgrade, Faculty of Mechanical Engineering) (RS-MESTD-inst-2020-200105)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200213 (Innovation Center of the Faculty of Mechanical Engineering) (RS-MESTD-inst-2020-200213)
DOI: 10.1016/j.ijfatigue.2022.107162
ISSN: 0142-1123
WoS: 00085249530000
Scopus: 2-s2.0-85135692936
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Inovacioni centarTY - JOUR AU - Sedmak, Aleksandar AU - Grbović, Aleksandar AU - Petrovski, Blagoj AU - Sghayer, Abulgasem AU - Sedmak, Simon AU - Berto, Filippo AU - Đurđević, A. PY - 2022 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3813 AB - Fatigue crack growth in different panels, made of AA6156 T6, was investigated experimentally and numerically. Three different types of panels were used, simple one, so-called base metal (BM), panel with 4 welded stringers and panel with 4 welded stringers and 3 welded clips. Experimental investigation indicated benefits of stringers, especially in respect to residual life, since the number of cycles were more than doubled (420 Kcyc vs 195 Kcyc for initial crack length 14 mm), but that was not the case for panels with clips (220 Kcyc). Experimental investigation was also performed on panels with longer cracks (75 mm) to check the effect of initial crack length in the case of BM and panels with 4 stringers, showing practically the same effect of stringers on residual life (95 Kcyc vs 50 Kcyc). Then, fatigue crack growth in panels was simulated numerically using xFEM. Numerical simulation indicated the same trend and effectiveness of stringers, with sufficient agreement with experimental results for BM and panels with stringers only. Anyhow in the case of clips panels with 4 stringers and 3 clips, number of cycles for panel with additional 3-clips was higher than for panel with just 4-stringer, (278 Kcyc vs 265 Kcyc), improving fatigue life for cca 5 %, contrary to experimental results. PB - Elsevier Ltd T2 - International Journal of Fatigue T1 - The effects of welded clips on fatigue crack growth in AA6156 T6 panels VL - 165 DO - 10.1016/j.ijfatigue.2022.107162 ER -
@article{ author = "Sedmak, Aleksandar and Grbović, Aleksandar and Petrovski, Blagoj and Sghayer, Abulgasem and Sedmak, Simon and Berto, Filippo and Đurđević, A.", year = "2022", abstract = "Fatigue crack growth in different panels, made of AA6156 T6, was investigated experimentally and numerically. Three different types of panels were used, simple one, so-called base metal (BM), panel with 4 welded stringers and panel with 4 welded stringers and 3 welded clips. Experimental investigation indicated benefits of stringers, especially in respect to residual life, since the number of cycles were more than doubled (420 Kcyc vs 195 Kcyc for initial crack length 14 mm), but that was not the case for panels with clips (220 Kcyc). Experimental investigation was also performed on panels with longer cracks (75 mm) to check the effect of initial crack length in the case of BM and panels with 4 stringers, showing practically the same effect of stringers on residual life (95 Kcyc vs 50 Kcyc). Then, fatigue crack growth in panels was simulated numerically using xFEM. Numerical simulation indicated the same trend and effectiveness of stringers, with sufficient agreement with experimental results for BM and panels with stringers only. Anyhow in the case of clips panels with 4 stringers and 3 clips, number of cycles for panel with additional 3-clips was higher than for panel with just 4-stringer, (278 Kcyc vs 265 Kcyc), improving fatigue life for cca 5 %, contrary to experimental results.", publisher = "Elsevier Ltd", journal = "International Journal of Fatigue", title = "The effects of welded clips on fatigue crack growth in AA6156 T6 panels", volume = "165", doi = "10.1016/j.ijfatigue.2022.107162" }
Sedmak, A., Grbović, A., Petrovski, B., Sghayer, A., Sedmak, S., Berto, F.,& Đurđević, A.. (2022). The effects of welded clips on fatigue crack growth in AA6156 T6 panels. in International Journal of Fatigue Elsevier Ltd., 165. https://doi.org/10.1016/j.ijfatigue.2022.107162
Sedmak A, Grbović A, Petrovski B, Sghayer A, Sedmak S, Berto F, Đurđević A. The effects of welded clips on fatigue crack growth in AA6156 T6 panels. in International Journal of Fatigue. 2022;165. doi:10.1016/j.ijfatigue.2022.107162 .
Sedmak, Aleksandar, Grbović, Aleksandar, Petrovski, Blagoj, Sghayer, Abulgasem, Sedmak, Simon, Berto, Filippo, Đurđević, A., "The effects of welded clips on fatigue crack growth in AA6156 T6 panels" in International Journal of Fatigue, 165 (2022), https://doi.org/10.1016/j.ijfatigue.2022.107162 . .