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
Notice bibliographique
Résumé
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.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,003 | 0,013 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,004 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».