investigation on the influence of damage on the fatigue

  • investigation on the influence of damage on the fatigue

  • The boiler steel is not only required to have good corrosion resistance at low temperature, but also required to have good oxidation resistance at high temperature for components working at high temperature. Especially for the components of superheater and reheater, when they investigation on the influence of damage on the fatigue work at high temperature, they are required not easy to be oxidized and peeled. Generally, the development speed of oxidation depth at working temperature is required to be less than 0.1mm\/year. The addition of chromium, nickel, aluminum and silicon can improve the oxidation resistance of steel.

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On the investigation of the biaxial fatigue behaviour of investigation on the influence of damage on the fatigue 6. Investigation on the evolution of fatigue damage. With the aim to collect information on the damage evolution at the macroscopic scale, the specimens were analysed during fatigue life by means of eye-observations and lock-in analysis with an infrared camera. Both these techniques did not reveal a visible damage accumulation. Novel Test Facility for Investigation of the Impact of investigation on the influence of damage on the fatigue The test results show a considerable influence of the temperature gradient on the low-cycle fatigue life of the investigated material. Both the temperature variation over the specimen wall and thermally induced stresses are stated to be the main drivers for the change in low-cycle fatigue life.

Experimental and Numerical Investigation on the Influence of investigation on the influence of damage on the fatigue

Therefore, a test facility has been designed, set up, and reported in GT2018-76519 for the investigation of the influence of stationary temperature, and thus thermally induced stress gradients, on the damage evolution of cooled high-temperature components. Experimental and Numerical Investigation on the Influence of investigation on the influence of damage on the fatigue The test results show the considerable influence of the temperature gradient on the low-cycle fatigue life for the investigated material. Both the radial temperature variation over the specimen wall with a hot outer surface and a cooled inner surface as well as the thermally induced stresses are stated to be the main drivers for the change in investigation on the influence of damage on the fatigue Experimental Investigation into the Fatigue Damage investigation on the influence of damage on the fatigue The fatigue damage evolution in glass-fiber-reinforced (GRP) mortar pipes under cyclic loading were investigated. Based on the results of fatigue tests, a two-stage linear law of stiffness degradation of a glass-fiber-reinforced plastic mortar pipe culvert is proposed, and a model for calculating its stiffness degradation is established.

An investigation into the fatigue damage of a long flexible investigation on the influence of damage on the fatigue

The effect of prior creep-fatigue damage on the creep and the fatigue characteristics was studied to investigate the creep-fatigue life evaluation procedure of 316FR stainless steel. An investigation into the fatigue damage of a long flexible investigation on the influence of damage on the fatigue The fatigue damage of the flexible cylinder can be reduced to a lower level with 4 control rods. In addition, mode transition, a specific feature of VIV in uniform flow, is found in the experiment and has a strong influence on fatigue life. An investigation into the fatigue damage of a long flexible investigation on the influence of damage on the fatigue In order to further study the influence of control rods on the fatigue life of the flexible cylinder, the Miner-Palmgren hypothesis (Wang et al., 2015), which is widely used at present, is adopted to calculate the fatigue damage of the cylinder. The Miner-Palmgren hypothesis and VIV response data of the cylinder model are used to calculate the investigation on the influence of damage on the fatigue

An Investigation on the Effect of Aging and Fatigue Damage on investigation on the influence of damage on the fatigue

An Investigation on the Effect of Aging and Fatigue Damage on the Mechanical Properties of a Graphite/Bismaleimide Composite William M. Johnston Jr. Old Dominion University Follow this and additional works at:https://digitalcommons.odu.edu/mae_etds Part of theMaterials Science and Engineering Commons, and theMechanical Engineering Commons A process and investigation into the influence of cast investigation on the influence of damage on the fatigue A process and investigation into the influence of cast surface condition on fatigue life Jeffrey Alan Tscherter Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Recommended Citation Tscherter, Jeffrey Alan, "A process and investigation into the influence of cast surface condition on fatigue life" (2020). A Numerical Investigation of Vortex-Induced Vibration investigation on the influence of damage on the fatigue Vortex-induced vibration (VIV) for flexible cylinders under combined uniform and oscillatory flow is a challenging and practical issue in ocean engineering. In this paper, a time domain numerical model is adopted to investigate the characteristics of cross-flow VIV response and fatigue damage under different combined flow cases. Firstly, the adopted VIV model and fatigue analysis procedure are investigation on the influence of damage on the fatigue

On the fatigue damage micromechanisms in Sisolution investigation on the influence of damage on the fatigue

considerable influence on SGI damage mechanisms. So, it is important to include graphite growth morphology in damage mechanism studies. In this study, the focus is on high Si EN-GJS-500-14. The aim of this work is to develop a comprehensive understanding of fatigue damage micromechanisms and the influence of graphite form and its growth Numerical investigation of the influence of the creep curve investigation on the influence of damage on the fatigue Numerical investigation of the influence of the creep curve on the wheelrail contact damage in high-speed railway turnouts. investigation on the influence of damage on the fatigue In this case, both fatigue damage and wear are low. When the investigation on the influence of damage on the fatigue Multi-Scale Investigation on Residual Strength of Jacket investigation on the influence of damage on the fatigue The influence of the time-varying crack damage on the residual strength of jacket platform is then revealed based on the multi-scale FE model. The results show that the proposed multi-scale method can accurately describe fatigue crack damage in the macro-scale structure, and be applied to investigate the influence of meso-scale structural investigation on the influence of damage on the fatigue

Investigation of the influence of low amplitude loads on the investigation on the influence of damage on the fatigue

Analytical evaluation of fatigue life (for the program block) was obtained using a S-N curve of regular loading with the corresponding asymmetry (R = -6), and using the linear summation hypothesis of damage [1,4]. The amount of fatigue damage in this case was as the ratio of the experimental to the analytical fatigue life: exp eval N A N . Investigation of the Influence of Waves and Vessel Motions on investigation on the influence of damage on the fatigue Trarieux, F, Lyons, GJ, Vaz, M, Patel, MH, & Garnham, S. "Investigation of the Influence of Waves and Vessel Motions on the VIV Response of Flexible Risers and Umbilicals From a Fatigue Damage Perspective." Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering. Investigation on the Influence of Fatigue Damage on the investigation on the influence of damage on the fatigue Investigation on the Influence of Fatigue Damage on the Mechanics Property of Anti-Seismic Steel HRB400E Reinforcing Steel Bars p.1678 Lateral Flexural-Torsion Buckling of Thin-Walled Cold-Formed Steel Beams with Holes - Design Resistance Evaluation Based on Test Results

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