Crack initiation and propagation resistance of hsla steel welded joint constituents
Апстракт
The welded joint is heterogeneous in its microstructure, mechanical and geometrical properties, thus the stress field is affected by different factors as well as by residual stress. Therefore, special procedures are needed for experimentally determining the fracture toughness in plane strain, K-Ic, and the impact toughness, usually associated with difficulties in interpreting the measured values. Notched specimens are tested by instrumented Charpy in order to determine impact energy and crack initiation and propagation energies. The pre-cracked specimens are tested by standard, using three-point bending specimens, as geometrically closest to Charpy specimens. In both cases, the notch and crack are located in all various regions of the welded joint of the high-strength low alloyed steel NIONIKRAL-70. Analysis of the results includes speculations on the ratio of energies for crack initiation and propagation vs. fracture toughness.
Кључне речи:
welded joint / impact energy / fracture toughness / crack propagation energy / crack initiation energyИзвор:
Structural Integrity and Life, 2020, 20, 1, 11-14Издавач:
- Institut za ispitivanje materijala, Beograd
Финансирање / пројекти:
- Динамика хибридних система сложених структура. Механика материјала (RS-MESTD-Basic Research (BR or ON)-174001)
- University of Pristina, Faculty of Technical Sciences
Институција/група
Inovacioni centarTY - JOUR AU - Jovanović, M. AU - Camagić, I AU - Sedmak, Simon AU - Zivković, P. AU - Sedmak, Aleksandar PY - 2020 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3434 AB - The welded joint is heterogeneous in its microstructure, mechanical and geometrical properties, thus the stress field is affected by different factors as well as by residual stress. Therefore, special procedures are needed for experimentally determining the fracture toughness in plane strain, K-Ic, and the impact toughness, usually associated with difficulties in interpreting the measured values. Notched specimens are tested by instrumented Charpy in order to determine impact energy and crack initiation and propagation energies. The pre-cracked specimens are tested by standard, using three-point bending specimens, as geometrically closest to Charpy specimens. In both cases, the notch and crack are located in all various regions of the welded joint of the high-strength low alloyed steel NIONIKRAL-70. Analysis of the results includes speculations on the ratio of energies for crack initiation and propagation vs. fracture toughness. PB - Institut za ispitivanje materijala, Beograd T2 - Structural Integrity and Life T1 - Crack initiation and propagation resistance of hsla steel welded joint constituents EP - 14 IS - 1 SP - 11 VL - 20 UR - https://hdl.handle.net/21.15107/rcub_machinery_3434 ER -
@article{ author = "Jovanović, M. and Camagić, I and Sedmak, Simon and Zivković, P. and Sedmak, Aleksandar", year = "2020", abstract = "The welded joint is heterogeneous in its microstructure, mechanical and geometrical properties, thus the stress field is affected by different factors as well as by residual stress. Therefore, special procedures are needed for experimentally determining the fracture toughness in plane strain, K-Ic, and the impact toughness, usually associated with difficulties in interpreting the measured values. Notched specimens are tested by instrumented Charpy in order to determine impact energy and crack initiation and propagation energies. The pre-cracked specimens are tested by standard, using three-point bending specimens, as geometrically closest to Charpy specimens. In both cases, the notch and crack are located in all various regions of the welded joint of the high-strength low alloyed steel NIONIKRAL-70. Analysis of the results includes speculations on the ratio of energies for crack initiation and propagation vs. fracture toughness.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Structural Integrity and Life", title = "Crack initiation and propagation resistance of hsla steel welded joint constituents", pages = "14-11", number = "1", volume = "20", url = "https://hdl.handle.net/21.15107/rcub_machinery_3434" }
Jovanović, M., Camagić, I., Sedmak, S., Zivković, P.,& Sedmak, A.. (2020). Crack initiation and propagation resistance of hsla steel welded joint constituents. in Structural Integrity and Life Institut za ispitivanje materijala, Beograd., 20(1), 11-14. https://hdl.handle.net/21.15107/rcub_machinery_3434
Jovanović M, Camagić I, Sedmak S, Zivković P, Sedmak A. Crack initiation and propagation resistance of hsla steel welded joint constituents. in Structural Integrity and Life. 2020;20(1):11-14. https://hdl.handle.net/21.15107/rcub_machinery_3434 .
Jovanović, M., Camagić, I, Sedmak, Simon, Zivković, P., Sedmak, Aleksandar, "Crack initiation and propagation resistance of hsla steel welded joint constituents" in Structural Integrity and Life, 20, no. 1 (2020):11-14, https://hdl.handle.net/21.15107/rcub_machinery_3434 .