Academic Journal
On the Comparison of Hydroelectric Runner Fatigue Failure Risk Based on Site Measurements
| العنوان: | On the Comparison of Hydroelectric Runner Fatigue Failure Risk Based on Site Measurements |
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| المؤلفون: | Morin, Olivier, Thibault, Denis, Gagnon, Martin |
| المصدر: | IOP Conference Series: Earth and Environmental Science ; volume 774, issue 1, page 012126 ; ISSN 1755-1307 1755-1315 |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2021 |
| الوصف: | The fatigue reliability of a turbine runner is closely related to its dynamic behavior. Over the past few years, Hydro-Québec has performed measurement campaigns on many of its turbine runners. These measurements led to the evaluation of the fatigue risk level of each runner in various operating conditions, which allows operating conditions with a higher risk of crack propagation to be avoided. This paper presents the results for turbine dynamic behavior assessed in steady-state conditions. Stress levels at strain gauge locations are used to evaluate the risk of fatigue cracking based on the Kitagawa-Takahashi diagram. Results show a good correlation between the calculated risk of cracking and real cases of cracks found in runners. Furthermore, the results comparison highlights a apparent tendency for recent designs to be more prone to cracking at speed-no-load operating condition than older designs. The paper gives an overview of the methodology used and discusses the conclusions derived from the sample of turbine runners available for this study. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| DOI: | 10.1088/1755-1315/774/1/012126 |
| DOI: | 10.1088/1755-1315/774/1/012126/pdf |
| الاتاحة: | http://dx.doi.org/10.1088/1755-1315/774/1/012126 https://iopscience.iop.org/article/10.1088/1755-1315/774/1/012126 https://iopscience.iop.org/article/10.1088/1755-1315/774/1/012126/pdf |
| Rights: | http://creativecommons.org/licenses/by/3.0/ ; https://iopscience.iop.org/info/page/text-and-data-mining |
| رقم الانضمام: | edsbas.D8C60B86 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/1755-1315/774/1/012126 |
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