مورد إلكتروني
Assessment of novel modal testing methods for structures rotating in water
| العنوان: | Assessment of novel modal testing methods for structures rotating in water |
|---|---|
| بيانات النشر: | Multidisciplinary Digital Publishing Institute 2023-02-23 |
| تفاصيل مُضافة: | Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids Universitat Politècnica de Catalunya. REMM - Recerca en Estructures i Mecànica de Materials Roig Bauzà, Rafel Sánchez Botello, Xavier Escaler Puigoriol, Francesc Xavier |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The current paper presents an investigation into novel modal testing methods applied to a disk–shaft structure at different rotating speeds in air and water. The structure was excited using three different methods: an instrumented hammer, a piezoelectric PZT patch glued on the disk and a transient ramp-up. The structural response was measured using an accelerometer and strain gauges mounted on board as well as accelerometers and displacement lasers mounted off board. The potential to excite the natural frequencies using each excitation method and to detect natural frequencies with each sensor was analyzed and compared. Numerical structural and acoustic– structural modal and harmonic analyses of the non-rotating disk in air and water were also performed, taking into consideration the PZT patch. The numerical results showed a close agreement with the experimental ones in both air and water. It was found that the rotating speed of the disk modified the detected natural frequencies, depending on the frame of reference of the sensor. Finally, the PZT patch and the transient ramp-up were proven to be reliable methods to excite the natural frequencies of the current test rig and to be potentially applicable in full-scale hydraulic turbines under operating conditions. This research was funded by the European Union’s Horizon H2020 research and innovation program under grant agreement No. 814958. Peer Reviewed Postprint (published version) |
| مصطلحات الفهرس: | Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids, Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors, Piezoelectric transducers, Hydraulic turbines, Experimental modal testing, Piezoelectric PZT actuators, Numerical modal analysis, Numerical acoustic–structural–piezoelectric coupling, Frequency reduction ratio, Submerged rotating structures, Structural health monitoring, Transductors piezoelèctrics, Turbines hidràuliques, Article |
| URL: | info:eu-repo/grantAgreement/EC/H2020/814958/EU/Active Flow Control system FOR improving HYDRaulic turbine performances at off-design Operation/AFC4Hydro |
| الإتاحة: | Open access content. Open access content Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 Open Access |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | HGF oai:upcommons.upc.edu:2117/384843 Roig, R.; Sanchez, X.; Escaler, X. Assessment of novel modal testing methods for structures rotating in water. "Applied sciences (Basel)", 23 Febrer 2023, vol. 13, núm. 5, article 2895. 2076-3417 10.3390/app13052895 1372980694 |
| المصدر المساهم: | UNIV POLITECNICA DE CATALUNYA From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1372980694 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |