000015338 001__ 15338
000015338 005__ 20250120134309.0
000015338 022__ $$a1755-1307
000015338 0247_ $$2DOI$$a10.1088/1755-1315/1411/1/012039
000015338 037__ $$aCONFERENCE
000015338 039_9 $$a2025-01-20 13:43:09$$b0$$c2025-01-20 10:55:15$$d1001044$$c2025-01-14 14:15:27$$d0$$y2025-01-14 14:15:19$$z1000099
000015338 041__ $$aeng
000015338 245__ $$aExperimental facility dedicated to detection and prediction of penstock fatigue induced by pressure oscillations
000015338 260__ $$aBristol, UK$$bIOP Publishing
000015338 269__ $$a2024-09
000015338 300__ $$a11 p.
000015338 506__ $$avisible
000015338 520__ $$9eng$$aHydroelectric powerplants play a vital role in the electricity production mix, especially during the ongoing energy transition towards renewable sources. However, they face operational challenges due to harmful stress loading of various components. Ensuring safe operation remains essential for people's safety, electricity supply, and costs avoidance. The study focuses on penstocks and pipelines material damaging caused by fatigue, crack initiation and propagation. These critical components are often several decades old and expensive to refurbish or replace. Cycling loading, induced by pressure oscillations during start-stop or transient operations, accelerates material fatigue. Steel lining corrodes over time, and welds may contain original defects. To address this, a new testing facility that generates controlled cyclic pressure oscillations using the water hammer effect has been built. This specific closed-loop circuit allows accelerated fatigue testing of material probes, providing insights into crack initiation and propagation. The test rig operating principle is described while its 1D numerical model is introduced and validated with measurement data. The prediction of crack incipience and rupture of a tubular specimen with a pre-machined longitudinal weakening is in the end compared with the results of a fatigue test conducted on the test bench.
000015338 540__ $$acorrect
000015338 592__ $$aHEI-VS
000015338 592__ $$bInstitut Systèmes industriels
000015338 592__ $$cIngénierie et Architecture
000015338 655_7 $$apublished full paper
000015338 700__ $$aHasmatuchi, Vlad$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015338 700__ $$aRittiner, Robin$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015338 700__ $$aBoyer-Pires, Salomé$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015338 700__ $$aLecointre, Charly-Loup$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015338 700__ $$aNicolet, Christophe$$uPower Vision Engineering Sàrl, St-Sulpice, Switzerland
000015338 700__ $$aMünch-Alligné, Cécile$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015338 700__ $$aRey-Mermet, Samuel$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015338 711__ $$a32nd IAHR Symposium on Hydraulic Machinery and Systems$$cRoorkee, India$$d2024-09-11$$m2024-09-14
000015338 773__ $$tIOP Conference Series: Earth and Environmental Science ; Proceedings of the 32nd IAHR Symposium on Hydraulic Machinery and Systems, 11-14 September 2024, Roorkee, India$$j2024, 1411$$k1$$q012039
000015338 8564_ $$uhttps://arodes.hes-so.ch/record/15338/files/Hasmatuchi_2024_experimental_facility_dedicated_detection_prediction_penstock_fatigue_induced_pressure_oscillations.pdf$$yPublished version$$9548fd073-ce49-4019-bffe-db337104def6$$s2173236
000015338 906__ $$aGOLD
000015338 909CO $$ooai:hesso.tind.io:15338$$pGLOBAL_SET
000015338 950__ $$aaucun
000015338 980__ $$aconference
000015338 981__ $$aconference