Analysis of Parametric Uncertainty Linked to Behavior of Fatigue of Electricity Transmission Cables
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Bibliographic record
Abstract
The irradiation embrittlement of Reactor Vessel Internals is essential to perform the Time Limited Aging Analyses studies in view of the Life extension of Nuclear Power reactors. Heavy water reactors, such as Atucha and Embalse, has thermal flux comparable with the fast flux, therefore it is necessary to consider the efficiency of thermal neutrons in the calculation of displacements per atom.Using the SPECTER calculation code, the effective damage function for stainless steels and nickel-based alloys is obtained extending the concept introduced by Jones R. B., Edens D. J., Effects of Radiation on Materials, ASTM STP 1366, in the context of ferritic steels. Finally, the results are compared with the Canadian experience in CANDU type reactorsThe electric transmission overhead lines are subject to the action of the wind, which causes a transverse vibration of the conductor and, therefore, alternating stress. The complex mechanism of inter-action between the strands of an electric conductor subjected to alternating bending has made it difficult to calculate the real efforts. The distribution of stresses in the conductor during the alternating movement is affected by numerous direct factors related to its structure (conductor diameter, flexural stiffness,length, number of wires and layers) and indirect (types of clamps used, distributions of pressure inside the conductor generated in the mounting of the clamp). Another important factor is the contact tension between the strands of the conductor. At present, there are standards and guidelines for conducting lab-oratory tests where it is possible to simulate the conditions presented in the field, so that information on these parameters can be obtained, thus facilitating the study of their dynamic behavior and the relationship with the efforts presented. In this paper, a stochastic finite element model is introduced with the objective of contrasting the results obtained from using the Poffenberger Swart expression, widely used in the design and maintenance of electric transmission lines, taking as input data the measurements laboratory, of the displacement of the conductor at a defined distance from the suspension clamp.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.005 | 0.003 |
| Bibliometrics | 0.006 | 0.013 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it