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Identifying and resolving faults quickly in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 8, N° 3 (2015)
[article]
Titre : Identifying and resolving faults quickly Type de document : texte imprimé Année de publication : 2015 Article en page(s) : p. 12 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle
Automobiles -- Revêtements:Automobiles -- Peinture
Détection de défauts (Ingénierie)
Diagnostic qualité
Logiciels
Qualité -- Contrôle
Revêtements:PeintureIndex. décimale : 668.4 Plastiques, vinyles Résumé : Software for visualising painting booths - Painting lines should be easy to operate and any faults that occur need to be detected and rectified rapidly. In order to ensure that these requirements are met, a software package that can be used to visualise painting booths has been updated. It enables faults to be displayed accurately and clearly and provides relevant information about troubleshooting. Note de contenu : - Graphical diagnostics for the conyevor system Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24996
in INTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 8, N° 3 (2015) . - p. 12[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17589 - Périodique Bibliothèque principale Documentaires Disponible Innovative contact-free material testing method / Balthasar Fischer in ADHESION - ADHESIVES + SEALANTS, Vol. 16, N° 3/2019 (2019)
[article]
Titre : Innovative contact-free material testing method Type de document : texte imprimé Auteurs : Balthasar Fischer, Auteur Année de publication : 2019 Article en page(s) : p. 28-31 Langues : Multilingue (mul) Catégories : Adhésion -- Défauts
Composites -- Défauts
Contrôle non destructif
Détection de défauts (Ingénierie)
Microphone optique
Soudures -- DéfautsIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : In order to test composites, welds or adhesive joints for defects, non-destructive testing using ultrasound has been established in companies. The Austrian company Xarion has now developed a new type of optical microphone with which the measuring process can be carried out without contact. This significantly reduces the amount of testing required. Note de contenu : - No loss of the test signal
- Inline and in-process monitoring possible
- No influence of measurement results by natural oscillation
- Testing of composites, adhesive bonds and spot welds
- Fig. 1 : The optical microphone Eta250 Ultra — a complete system consists of the signal processing unit, sensor head and optical fiber
- Fig. 2 : Sound measurement recorded with the optical microphone — valuable process signais are in high frequency ranges
- Fig. 3 : The compact sensor head of the optical microphone
- Fig. 4 : Usage of the optical microphone for tool condition monitoring : Acoustic fingerprint of an intact drill and a broken drill ; a clear distinction is possible only in high frequencies
- Fig. 5 : A composite material used in aircraft construction (right) and the ultrasound test image scanned with the optical microphone (left). Defects inside the material become visible.En ligne : https://drive.google.com/file/d/1W5_3b2CsoG4WOowCYS4ncRhQn1QgCPcL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32929
in ADHESION - ADHESIVES + SEALANTS > Vol. 16, N° 3/2019 (2019) . - p. 28-31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21164 - Périodique Bibliothèque principale Documentaires Disponible Knowledge distillation for unsupervised defect detection of yarn-dyed fabric using the system DAERD : Dual attention embedded reconstruction distillation / Hongwei Zhang in COLORATION TECHNOLOGY, Vol. 140, N° 1 (02/2024)
[article]
Titre : Knowledge distillation for unsupervised defect detection of yarn-dyed fabric using the system DAERD : Dual attention embedded reconstruction distillation Type de document : texte imprimé Auteurs : Hongwei Zhang, Auteur ; Shuaibo Liu, Auteur ; Shuai Lu, Auteur ; Le Yao, Auteur ; Pengfei Li, Auteur Année de publication : 2024 Article en page(s) : p. 125-143 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Détection de défauts (Ingénierie)
Textiles et tissus teintsIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Detecting defects of yarn-dyed fabrics automatically in industrial scenarios can improve economic efficiency, but the scarcity of defect samples makes the task more challenging in the customised and small-batch production scenario. At present, most reconstruction-based methods have high requirements on the effect of reconstructing the defect area into the normal area, and the reconstruction performance often determines the final defect detection result. To solve this problem, this article proposes an unsupervised learning framework of dual attention embedded reconstruction distillation. We try to use this novel distillation scheme to provide some contribution to the defect detection field. Firstly, different from the encoder-encoder structure of traditional distillation, the teacher-student network in this article adopts the encoder-decoder structure. The purpose of the student network is to restore the normal feature representation of the pre-trained teacher network. Secondly, this article proposes a dual attention residual module, which can effectively remove redundant information and defective feature information from the teacher network through the double feature weight allocation mechanism. This helps the student network to recover the normal feature information output by the teacher network. Finally, the multi-level training deployment at the feature level in this article aims to make the model obtain accurate defect detection results. The proposed method has been extensively tested on the published fabric dataset YDFID-1, ZJU-Leaper dataset and the anomaly detection dataset MVTec. The results show that this method not only has good performance in fabric defect detection and location but also has universal applicability. Note de contenu : - RELATED WORKS : Fabric defect detection - Attention mechanism
- METHODS : The proposed DAERD model - DAERD-based yarn-dyed fabric defect detection
- EXPERIMENT : Experimental details - Datasets - Evaluation metric - Experimental results and comparative analysis
- Table 1 : Distribution of the number of defective and defect-free samples in the partial dataset of YDFID-1
- Table 2 : Distribution of the number of anomaly-free and anomalous samples in the texture class dataset
- Table 3 : Image-level AUROC (%) of defect detection methods on the YDFID-1 dataset
- Table 4 : Pixel-level AUROC (%) and AUPRO (%) of defect localisation methods on the YDFID-1 dataset
- Table 5 : Image-level AUROC (%) of defect detection methods on the MVTec dataset
- Table 6 : Pixel-level AUROC (%) and AUPRO (%) of defect localisation methods on the MVTec dataset
- Table 7 : Image-level AUROC (%) of defect detection methods on the ZJU-Leaper dataset
- Table 8 : Pixel-level AUROC (%) and AUPRO (%) of defect localisation methods on the ZJU-Leaper dataset
- Table 9 : Ablation study of the effect of SimAM (simple, parameter-free, attention module) and SE (squeeze-and-excitation) network on the model performanceDOI : https://doi.org/10.1111/cote.12705 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12705 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40396
in COLORATION TECHNOLOGY > Vol. 140, N° 1 (02/2024) . - p. 125-143[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24413 - Périodique Bibliothèque principale Documentaires Disponible Limits to Instability ? / Walter Michaeli in KUNSTSTOFFE INTERNATIONAL, Vol. 100, N° 11 (11/2010)
[article]
Titre : Limits to Instability ? Type de document : texte imprimé Auteurs : Walter Michaeli, Auteur ; Christian Windeck, Auteur Année de publication : 2010 Article en page(s) : p. 41-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Détection de défauts (Ingénierie)
Ecoulement bidimensionnel
Eléments finis, Méthode des
Emballages en matières plastiques
Films plastiques
Interfaces (Sciences physiques)
Matières plastiques -- Défauts
Matières plastiques -- Extrusion
Simulation par ordinateurTags : 'Films plastiques' Défauts 'Instabilités interfaciales' Zigzag Vague Index. décimale : 668.4 Plastiques, vinyles Résumé : Quality Assurance - The packaging sector accounts for approximately one-third of all plastics consumed in Germany, with packaging film leading by far. However, there are often flow effects that reduce product quality in multi-layer structures. Simulation calculations now hope to analyze the flow in dies in order to prevent such effects. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10350
in KUNSTSTOFFE INTERNATIONAL > Vol. 100, N° 11 (11/2010) . - p. 41-44[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012655 - Périodique Bibliothèque principale Documentaires Disponible Linear and nonlinear ultrasonics for material damage evaluation and health monitoring / Rachid El Guerjouma in MATERIAUX & TECHNIQUES, N° Hors série (2002)
[article]
Titre : Linear and nonlinear ultrasonics for material damage evaluation and health monitoring Type de document : texte imprimé Auteurs : Rachid El Guerjouma, Auteur ; L. Goujon, Auteur ; H. Nachad, Auteur ; A. Faiz, Auteur ; Nathalie Godin, Auteur ; Mourad Bentahar, Auteur ; Jean-Claude Baboux, Auteur Année de publication : 2003 Article en page(s) : p. 48-50 Note générale : Bibliogr. Langues : Français (fre) Catégories : Composites
Contrôle non destructif
Détection de défauts (Ingénierie)
UltrasonsIndex. décimale : 620.11 Matériaux (propriétés, résistance) Résumé : In mechanics of material and material sciences, the early detection of damage, its non destructive characterisation and monitoring is of great importance. In this field ultrasonic waves can be very helpful especially when nonlinear ultrasonics is considered. In this work, linear and non linear ultrasonics are used for damage characterisation. Concerning linear ultrasonics, we show that velocity and linear elastic constants are good damage indicators for composites materials. For these materials, ultrasonic velocity is measured in situ during a tensile test, at the same time acoustic activity due to damage initiation and development. For other materials as metallic ones, linear ultrasonics is not sensitive enough for damage characterisation. In this case we show that nonlinear ultrasonics through the nonlinearity parameter β, is very sensitive to evaluate damage and to detect it very early. In this work we show that if linear ultrasonics through velocity measurements is a very good damage indicator especially for composite materials, nonlinear ultrasonics can be a very efficient tool for the early detection of damage and also for health monitoring. So it can greatly contribute to the understanding of damage initiation. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10276
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Code-barres Cote Support Localisation Section Disponibilité 000992 - Périodique Bibliothèque principale Documentaires Disponible Listening to defects with bat ears / Kai-Uwe Kohn in KUNSTSTOFFE INTERNATIONAL, Vol. 113, N° 4 (2023)
PermalinkMachine innovations 2021 C921 / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 46 (03-04/2021)
PermalinkMachine vision inspection system for detection of leather surface defects / Malathy Jawahar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 1 (01/2019)
PermalinkPermalinkLe monitoring des structures / Antonin Galtier in INDUSTRIE & TECHNOLOGIES, N° 954 (05/2013)
PermalinkNDT in-line inspection using the NIDIT procedure / Johann Hinken in JEC COMPOSITES MAGAZINE, N° 119 (03/2018)
PermalinkNo more incomplete parts / Ansgar Jaeger in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 4 (04/2012)
PermalinkNon-destructive testing of fiber composites / Marc Kreutzbruck in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 11 (11/2014)
PermalinkA novel feature-based network with sequential information for textile defect detection / Li Chenxi in COLORATION TECHNOLOGY, Vol. 136, N° 6 (12/2020)
PermalinkOn the safe side / Peter Rosendahl in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 5 (05/2013)
PermalinkPolymers under the chemical magnifying glass / Birgit Hagenhoff in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 4 (04/2014)
PermalinkPrédiction par simulation des défauts de plissement lors de la mise en forme des matériaux composites mono et multiplis / P. Wang in MATERIAUX & TECHNIQUES, Vol. 100, N° 6/7 (2012)
PermalinkPreforming automation to improve simulation and analyse induced forming defects / Muhammad Shahruikh Saeed in JEC COMPOSITES MAGAZINE, N° 151 (06-07/2023)
PermalinkPrendre la mesure du procédé d'injection / David Garcia in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 897 (10/2012)
PermalinkRegion wise surface level defect detection and ranking of crust leather images based on image processing techniques / S. Nithiyanantha Vasagam in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 7 (07/2023)
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