Influence of the spatial location of a parametric eddy current sensor relative to the surface of a controlled product of complex geometric shape on the measured values
Bibliographic record
Abstract
At the moment, products of complex geometric shapes such as Laval nozzles are widely used in industry. The work related to increasing the operational life of these products is relevant today. The creation of these products entails the use of a number of labor-intensive technological operations. At the same time, control of some product parameters is carried out by testing sample units from the series. Also, at the moment, some enterprises use non-destructive testing methods (eddy current control and magnetic control methods), but due to their use in manual mode, the control has low reliability and high labor intensity due to the human factor, since it is necessary to ensure a number of requirements for positioning transducers relative to the surface of products of complex geometric shape. There is also no data reflecting the effect of the curvature of the surface of products of complex geometric shapes such as Laval nozzles on the results of the measured parameters. Existing studies, as well as mathematical models, do not take into account the curvature of the surface. The purpose of the work is to increase the reliability and reduce the complexity of non-destructive quality control of coatings for products of complex geometric shapes such as Laval nozzles. In this paper, we investigate the effect of the accuracy of the spatial location of an eddy current transducer relative to the surface of a product of complex geometric shape on the results of the received signal from the eddy current transducer. The theoretical aspects reflecting the relationship between the deviation from the normal of the eddy current transducer and the surface of the object, the gap between the sensing element of the eddy current transducer and the surface of the object on the results of the received signal are presented. The received signal of an eddy current converter is modeled at different positions of the eddy current converter relative to the surface of a product of complex geometric shape such as a Laval nozzle in a Comsol Multiphysics environment. Based on the simulation, it is determined that the density of eddy currents increases as the radius of the conical surface decreases along the length. The results of the study showed that with an increase in the gap and deviation from the normal, the impedance increases, as the effect of the secondary magnetic field decreases. The presence of a conductive object is indicated by specific impedance values. At the same time, the impedance values differ from the values obtained as a result of modeling on products without curvature, with other identical model parameters. Accordingly, the positioning of the sensor relative to the ISGF based on the calculation of the analytical dependence is impossible, therefore, in order to obtain reliable control results, it is necessary to adjust the spatial location of the eddy current transducer relative to the surface of the product of complex geometric shape, based on the measurement results of the current impedance values.
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How this classification was reachedexpand
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 | 0.003 | 0.013 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.004 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".