1-20 of 97 Search Results for

thermal fatigue damage

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 296-303, October 15–18, 2024,
... Abstract In flexible operation with increased number of startup, shutdown, and load fluctuations, thermal fatigue damage is exacerbated along with existing creep damage in power plant pipe and pressure vessels. Recently, cracks were found in the start-up vent pipe branching from the reheat...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 528-539, October 15–18, 2024,
... components of the Rankine cycle. Many damage mechanisms have been identified, which include corrosion, thermal fatigue, creep, and stress corrosion cracking, among others. Much of the damage can be attributed to poor water/steam chemistry and inadequate temperature control. While damage in the Rankine cycle...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 260-270, October 11–14, 2016,
...) was to simulate a large number of start-ups and shutdowns with high gradients as expected for future high efficient and flexible power plants and to investigate the damage due to thermal fatigue of the used nickel base alloys. In this paper the damage evolution of a header made of the nickel base alloys Alloy 617...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1388-1396, October 22–25, 2013,
..., Issue3) Dec.2004. [9] Dwight D. Agan, Philip M. Bsuner, Kimble.J.Clark, et al., Root Cause Evaluation of Waterwall Tube Circumferential Thermal Fatigue Damage in Supercritical Boilers , Electric Power Research Institute, Intl. Conference on Boiler Tube and HRSG Tube Failures and Inspections, Calgary,Oct...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 487-503, August 31–September 3, 2010,
..., "Development of thermal fatigue damage in 1CrMoV rotor steel", Nucl. Engng. & Des., 2007, 237(24), December, pp. 22922301. 502 21. M. Radosavljevic, E. Mazza, P. Grossmann, L. Ripamonti and S.R. Holdsworth, "Servicecycle component-feature specimen TMF testing of steam turbine rotor steels", Proc. 9th Liège...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 88-98, October 15–18, 2024,
... Abstract Thick-walled valves, steam chests, and casings suffer service damage from thermal stresses due to the significant through-thickness temperature gradients that occur during operating transients. Fatigue is the primary damage mechanism, but recent examination of turbine casings has...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 254-264, October 22–25, 2013,
... strengthened by Co, Cr at 750°C, it is considered as the potential candidate material for A-USC power plant [1]. Low cycle fatigue damage caused by cyclic thermal stress and strain generated during daily operation, start-up and shut-down of a thermal power plant is a critical issue to be addressed. As limited...
Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 231-246, October 25–28, 2004,
... have resulted in in-service damage. Examples of factors leading to accelerated creep, creep fatigue and oxidation damage are described. bending creep fatigue ductility ferritic stainless steel heat treatment martensitic microstructure oxidation damage power generating plants welding...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 400-406, October 11–14, 2016,
..., thermal fatigue properties of a dissimilar welded part of SUPER304H were investigated by conducting thermal fatigue tests and finite element analyses. The test sample was a dissimilar welded tube of SUPER304H and T91 (9Cr-1Mo-V-Nb), which is a typical ferritic heat resistant boiler steel. austenitic...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 429-440, October 15–18, 2024,
... approximately 9000 hours of operation and around 800 cycles with holding times of 4 and 6 hours. After dismantling the loop, nondestructive and destructive examinations of selected components were conducted. The accompanying testing program includes results from thermal fatigue, fatigue, thermal shock, and long...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 679-689, October 22–25, 2013,
... the combined damage is discussed and recommendations for alternative approaches are made. creep-fatigue creep-fatigue properties cyclic softening low cycle fatigue martensitic stainless steel precision pneumatic loading systems stress relaxation Advances in Materials Technology for Fossil Power...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1-10, October 21–24, 2019,
... Abstract Future, flexible thermal energy conversion systems require new, demand-optimized high-performance materials. In order to provide a basis for the targeted development of fatigue-resistant, cost-effective steel grades, the microstructural damage to materials and the failure...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 571-583, August 31–September 3, 2010,
...-based components, which have higher coefficients of thermal expansion, along with lower thermal conductivity, than the ferritic steels currently used in conventional fossil fuel fired power plant. In order to investigate this effect further, the current study examined the fatigue and creepfatigue...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 667-678, October 22–25, 2013,
... density were able to be uniquely expressed using simple thermal activation energy parameters. coal-fired ultra-super critical plants creep rupture strength creep strength creep strength enhanced ferritic steel creep-fatigue interaction Advances in Materials Technology for Fossil Power Plants...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1079-1089, October 21–24, 2019,
... Abstract CrMoV cast steels are widely utilized for steam turbine and valve casings, and are subjected to operating and loading conditions which can promote damage mechanisms such as thermal fatigue, creep, erosion, etc. These components are subjected to variable, and sometimes severe conditions...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 149-160, October 11–14, 2016,
... waveforms at 700°C. The number of cycles to failure was experimentally obtained for both alloys and the applicability of three representative life prediction methods was studied. advanced ultrasupercritical power plants creep damage evaluation creep-fatigue life nickel-chromium-cobalt-molybdenum...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 747-758, October 11–14, 2016,
... Abstract A failure of the upper casing of the circulation pump led to a big damage in the PP Staudinger unit 5 on 12th of May 2014. According to the §18(2) BetrSichV an extensive root cause analysis (RCA) was started. From the beginning on different lines of activities were initiated to handle...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 370-378, October 21–24, 2019,
... fast loading. f in the case of creep tests), with By considering the dependence of W its saturated f on W in and Tabs combinedly using 376 ln(W in ) 200,000 / 8.31/ Tabs (2) as shown in Figure 11(a) and assuming that failure takes place when the sum of fatigue damage and creep damage becomes...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 273-281, October 21–24, 2019,
... regulation has been smaller than nowadays. The duration of full load or constant load periods for thermal facilities has been reduced and accordingly the number of load changes has been increased. For thick-walled casings this means that an increasing part of fatigue damage needs to be considered...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 1161-1171, October 15–18, 2024,
... package involves fatigue and creep-fatigue testing at elevated temperatures, needed for developing the fatigue design curves and the damage envelope of the creep-fatigue interaction diagram (D-diagram). This paper summarizes the strain-controlled fatigue testing on three commercial heats of Alloy 709...