Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap'
Апстракт
Hydropower plants need to develop means of protection of turbine and hydromechanical equipment from undesirable occurrences, such as degradation of parent material and/or weld metal of parts and structures caused by stresses and unpredictable influence of vibrations, fatigue, corrosion, erosion and cavitation. Results of tests that refer to the cavitation resistance of turbine runner blades made of cast steel 08X15H4 pi M pi, in accordance with GOST standard are presented in this paper. For the testing of cavitation resistance, the ultrasonic vibration test method is used (with the stationary sample), for which it is necessary to measure the mass loss during specified time intervals, while the cavitation resistance of the material is being defined, taking into account the incubation period and cavitation rate. Scanning electron microscope analysis is carried out to study the morphology of sample damage due to cavitation. The obtained results show that the tested steel has a good cavita...tion resistance and that fatigue is the main failure mechanism.
Кључне речи:
turbine / runner blade / incubation period / cavitation rate / cavitation damageИзвор:
Structural Integrity and Life, 2017, 17, 1, 55-60Издавач:
- Institut za ispitivanje materijala, Beograd
Финансирање / пројекти:
- Развој нових методологија ревитализације турбинске и хидромеханичке опреме хидроелектрана у зависности од узрока деградације материјала (RS-MESTD-Technological Development (TD or TR)-35002)
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Dojčinović, Marina AU - Arsić, Miodrag AU - Bošnjak, Srđan AU - Murariu, Alin AU - Malešević, Zoranka PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2713 AB - Hydropower plants need to develop means of protection of turbine and hydromechanical equipment from undesirable occurrences, such as degradation of parent material and/or weld metal of parts and structures caused by stresses and unpredictable influence of vibrations, fatigue, corrosion, erosion and cavitation. Results of tests that refer to the cavitation resistance of turbine runner blades made of cast steel 08X15H4 pi M pi, in accordance with GOST standard are presented in this paper. For the testing of cavitation resistance, the ultrasonic vibration test method is used (with the stationary sample), for which it is necessary to measure the mass loss during specified time intervals, while the cavitation resistance of the material is being defined, taking into account the incubation period and cavitation rate. Scanning electron microscope analysis is carried out to study the morphology of sample damage due to cavitation. The obtained results show that the tested steel has a good cavitation resistance and that fatigue is the main failure mechanism. PB - Institut za ispitivanje materijala, Beograd T2 - Structural Integrity and Life T1 - Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap' EP - 60 IS - 1 SP - 55 VL - 17 UR - https://hdl.handle.net/21.15107/rcub_technorep_3504 ER -
@article{ author = "Dojčinović, Marina and Arsić, Miodrag and Bošnjak, Srđan and Murariu, Alin and Malešević, Zoranka", year = "2017", abstract = "Hydropower plants need to develop means of protection of turbine and hydromechanical equipment from undesirable occurrences, such as degradation of parent material and/or weld metal of parts and structures caused by stresses and unpredictable influence of vibrations, fatigue, corrosion, erosion and cavitation. Results of tests that refer to the cavitation resistance of turbine runner blades made of cast steel 08X15H4 pi M pi, in accordance with GOST standard are presented in this paper. For the testing of cavitation resistance, the ultrasonic vibration test method is used (with the stationary sample), for which it is necessary to measure the mass loss during specified time intervals, while the cavitation resistance of the material is being defined, taking into account the incubation period and cavitation rate. Scanning electron microscope analysis is carried out to study the morphology of sample damage due to cavitation. The obtained results show that the tested steel has a good cavitation resistance and that fatigue is the main failure mechanism.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Structural Integrity and Life", title = "Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap'", pages = "60-55", number = "1", volume = "17", url = "https://hdl.handle.net/21.15107/rcub_technorep_3504" }
Dojčinović, M., Arsić, M., Bošnjak, S., Murariu, A.,& Malešević, Z.. (2017). Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap'. in Structural Integrity and Life Institut za ispitivanje materijala, Beograd., 17(1), 55-60. https://hdl.handle.net/21.15107/rcub_technorep_3504
Dojčinović M, Arsić M, Bošnjak S, Murariu A, Malešević Z. Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap'. in Structural Integrity and Life. 2017;17(1):55-60. https://hdl.handle.net/21.15107/rcub_technorep_3504 .
Dojčinović, Marina, Arsić, Miodrag, Bošnjak, Srđan, Murariu, Alin, Malešević, Zoranka, "Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap'" in Structural Integrity and Life, 17, no. 1 (2017):55-60, https://hdl.handle.net/21.15107/rcub_technorep_3504 .