Early detection of looseness in bovine hides using ultrasonic imaging / Hannah C. Wells in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 3 (03/2016)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 3 (03/2016) . - p. 107-112 Titre : Early detection of looseness in bovine hides using ultrasonic imaging Type de document : texte imprimé Auteurs : Hannah C. Wells, Auteur ; Geoff Holmes, Auteur ; Richard G. Haverkamp, Auteur Année de publication : 2016 Article en page(s) : p. 107-112 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Défauts Détection de défauts (Ingénierie) Imagerie ultrasonore Peaux creuses Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The processing of bovine hides to leather results in a significant proportion of defective leather known as loose leather. It has not previously been possible to recognize hides that may produce loose leather. Hides were processed through to leather with samples retained at the pickle, wet blue and crust leather stages with material that resulted in loose leather compared with that resulting in tight leather, using ultrasonic imaging. The loose precursor is characterized by a lower density of material in the mid grain layer. The looseness is quantified by amplitude differences in ultrasound line scans or cross-sectional area scans between loose leather and tight leather with 2-4 times the amount of low intensity area in loose leather at all three process stages. This enables detection of hides that will result in loose leather and may enable unsuitable hides to be diverted to other process streams to save substantial processing costs. Note de contenu : - Sample selection - Leather preparation - Looseness evaluation - Ultrasonic imaging - Scanning electron microscopy - Sample detection - Ultrasonic images - Scanning electron microscopy En ligne : https://drive.google.com/file/d/1HxuzfKlZNnYq_HBFfMsAEn0o3ryD2U7J/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25746 [article]

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