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The evolution of non-destructive testing / Giovanni Schober in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 9 (09/2018)
[article]
Titre : The evolution of non-destructive testing : Progress in IT facilitates testing in production Type de document : texte imprimé Auteurs : Giovanni Schober, Auteur ; Martin Bastian, Auteur Année de publication : 2018 Article en page(s) : p. 41-44 Langues : Anglais (eng) Catégories : Analyse des données
Contrôle non destructif
Ondes millimétriques
Qualité -- Contrôle
Shearographie
Thermographie
UltrasonsIndex. décimale : 668.4 Plastiques, vinyles Résumé : Humans have honed their senses in the course of evolution. Technical development has created the discipline of non-destructive testing, which today generates huge amounts of data. Ever more sophisticated data evaluation is needed in order to obtain indications of the quality of parts within a time-frame appropriate to production. Note de contenu : - The (still ?) unrivalled human capacity for data reduction
- Accelerated shearography though the lock-in process
- Lossy data compression as a compromise
- Multiple-pulse thermography does not stress the material
- Where radar is superior to ultrasound
- Fig. 1 : Speeding up through parallelization: compared to sequential results evaluation (green), the parallelized evaluation of the 12 CPU cores (yellow) runs about 30 times as fast, on a graphic card (red) about 120 times as fast
- Fig. 2 : Automated testing of a carbon fiber-reinforced lightweight part with interna) foam structure by means of non-contact air ultrasound technology
- Fig. 3 : Multiple pulse thermography system: direct imaging and non-destructive testing of a damaged rotor-blade system by means of thermography
- Fig. 4 : Millimeter-wave technology : the Centerwave 6000 measures the diameter, ovality, wall thickness and the sagging of plastic pipes and displays the values on the monitor of the Ecocontrol 6000 processor systemPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31174
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 9 (09/2018) . - p. 41-44[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20202 - Périodique Bibliothèque principale Documentaires Disponible The TPE is gone ! / Christian Deubel in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 1 (01/2012)
[article]
Titre : The TPE is gone ! Type de document : texte imprimé Auteurs : Christian Deubel, Auteur ; Georg Schwalme, Auteur ; Klaus Schink, Auteur Année de publication : 2012 Article en page(s) : p. 26-29 Langues : Anglais (eng) Catégories : Contrôle non destructif
Détection de défauts (Ingénierie)
Elastomères thermoplastiques -- Moulage par injection
ThermographieIndex. décimale : 668.4 Plastiques, vinyles Résumé : In-line Recognition of Short Shots - Parts made of thermoplastic elastomers can exhibit a tendency to flashing and to short shots. Thermography affords an easy and cost-effective way of detecting defects on the molded part in-line. Note de contenu : - Fluctuations in the process
- Consistent, reproducible bond strength
- Visualizing deviations in the thermal images of the specimens
- Scrap gate and alarm signal activatedPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13634
in KUNSTSTOFFE INTERNATIONAL > Vol. 102, N° 1 (01/2012) . - p. 26-29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13637 - Périodique Bibliothèque principale Documentaires Disponible Thermographic detection of corrosion delamination / Peter Meinlschmidt in EUROPEAN COATINGS JOURNAL (ECJ), N° 03/01 (03/2001)
[article]
Titre : Thermographic detection of corrosion delamination Type de document : texte imprimé Auteurs : Peter Meinlschmidt, Auteur ; Gerhard B. Pausch, Auteur Année de publication : 2001 Article en page(s) : p. 106-111 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Corrosion
Délaminage
Détection de dommages (matériaux)
ThermographieIndex. décimale : 667.9 Revêtements et enduits Résumé : The initial stages of corrosion or delamination usually occur under the coating system, undetectable by visual inspection. However, these defects can be detected by transient thermography : The surface is subjected to a short heat pulse, and the subsequent temperature decay is recorded with a high lateral resolution. Thus, subsurface defects show as hot or cold spots. The method is also suitable to record the homogeneity of the coatings thickness. Note de contenu : - Transient or pulse thermography - sub-surface defects made visible as hot or cold spots
- Monitoring the early stages of corrosion
- Detector systems and process parameters
- Sub-surface and filiform corrosion can be measured accuratelyEn ligne : https://drive.google.com/file/d/1C6KeDPqyhaN_kCB9suV9th0sXN1L6G6b/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24209
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 03/01 (03/2001) . - p. 106-111[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000632 - Périodique Bibliothèque principale Documentaires Disponible Visualization analysis of temperature distribution in the cavity of conventional PPS and high-thermal-conductivity PPS during the filling stage of injection molding / Akifumi Kurita in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 1 (2023)
[article]
Titre : Visualization analysis of temperature distribution in the cavity of conventional PPS and high-thermal-conductivity PPS during the filling stage of injection molding Type de document : texte imprimé Auteurs : Akifumi Kurita, Auteur ; Yohei Yoshimura, Auteur ; Makoto Suzuki, Auteur ; Hidetoshi Yokoi, Auteur ; Yusuke Kajihara, Auteur Année de publication : 2023 Article en page(s) : p. 42-53 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Matières plastiques -- Moulage par injection
Polysulfures de phénylène
Rayonnement infrarouge
Thermocinétique
ThermographieIndex. décimale : 668.4 Plastiques, vinyles Résumé : As a highly thermally conductive PPS that is lightweight and has excellent heat dissipation is expected to be applied in various products, its peculiar filling behavior can cause molding defects such as short shots and surface cracks. To address these challenges, it is important to elucidate the filling behavior and clarify the effects of cavity shape and molding conditions. Thus, we intend to visualize the filling behavior of the high-thermal-conductivity PPS. To achieve this goal, we develop an in-process visualization system to reveal both the thermal and kinetic behaviors of the resin while it fills the cavity. In the system, a sapphire prism glass is utilized in the mold for visualization because it exhibits high strength, high heat conduction, and high infrared transmittance. A high-speed visible camera for kinetic behavior and an infrared camera for thermal behavior are utilized. With the developed system, we successfully obtained for the first time the filling behavior of high-thermal-conductivity PPS. Visualization experiments prove that the temperature of the conventional PPS gradually decreases from the tip to the rear of the flow. However, the temperature of the high-thermal-conductivity PPS drops sharply from the tip of the flow to the rear, and breakage at the flow front near the cavity wall is generated. Our interpretation is that the flow front near the cavity wall can be easily broken when it is stretched, because the ductility of the high-thermal-conductivity PPS largely decreases because of the rapid temperature drop. To suppress the formation of this breakage, we modify the cavity shape and molding conditions, and verify its suppression effect. Note de contenu : - EXPERIMENTAL : In-process visualization system - Material, cavity shape and molding conditions
- RESULTS AND DISCUSSION : Visualization of conventional PPS - Visualization of high-thermal-conductivity PPS - Discussion of the unstable flow mechanism of high-thermal-conductivity PPSDOI : https://doi.org/10.1515/ipp-2022-4225 En ligne : https://drive.google.com/file/d/1ut9VU4Gf0QSTzndF-ZuqPXhKz__gq5zw/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39193
in INTERNATIONAL POLYMER PROCESSING > Vol. 38, N° 1 (2023) . - p. 42-53[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24052 - Périodique Bibliothèque principale Documentaires Disponible