Comparative analysis of the mechanical properties of cattle leather in different parts / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 4 (07-08/2023)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 4 (07-08/2023) . - p. 145-147 Titre : Comparative analysis of the mechanical properties of cattle leather in different parts Type de document : texte imprimé Auteurs : Zhong Anhua, Auteur ; Huang Zhuo, Auteur ; Zhou Meng, Auteur ; Chen Xiaoting, Auteur ; Fang Songchun, Auteur Année de publication : 2023 Article en page(s) : p. 145-147 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux de bovins Microscopie Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Because of its inherent growth, the cattlehide varies from one part to another. The purpose of this study is to test and analyse the mechanical properties of different parts of cattlehide. It was found that : the same piece of cattlehide has a large difference in mechanical properties in the transverse direction and in the longitudinal direction. Fracture strength: neck > butt > belly, elongation at break : butt > belly > neck, tensile strength : butt > neck > belly. Fibre density is positively correlated with the fracture strength. The fibre density of the belly was 53% with poor bundling. The butt had a fibre density of 59%, with good bundling and large pores between fibres. The fibre density of the neck was 65%. There were small pores between fibres with loose fibre weaving, and disordered fibre arrangement. Differences in the structural shape of the fibres in the corium layer resulted in differences in the strength of the components. Note de contenu : - EXPERIMENTAL PROCEDURE : Experimental parameters - Experimental materials and apparatus - RESULTS AND DISCUSSION : Analysis of the stress-strain curves for different parts - Comparison of the mechanical properties of different parts - Characterisation of different parts by microscopy - Microscopic molecular analysis of three parts En ligne : https://drive.google.com/file/d/10XKMt60gISMkg8x5JmekXZjDw_sZgKs-/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39688 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
24155	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Mechanical microscopic analysis in the process of stretching cowskin collagen / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 1 (01-02/2023)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 1 (01-02/2023) . - p. 16-18 Titre : Mechanical microscopic analysis in the process of stretching cowskin collagen Type de document : texte imprimé Auteurs : Zhong Anhua, Auteur ; Huang Zhuo, Auteur ; Fang Songchun, Auteur ; Zhou Meng, Auteur Année de publication : 2023 Article en page(s) : p. 16-18 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Collagène -- Analyse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux de bovins Etirement (mécanique) Microscopie Traction (mécanique) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The tensile properties of cowskin leather are expressed in terms of its important mechanical properties. Variation in the collagen of cowhide is the microscopic cause of the tensile properties of cowhide. The aim of this study was to perform molecular dynamics simulations for the collagen stretching process of clothing cowhide at the rate of 0.01nm/ps, on lengths of 10nm. The changes in the RMSD (root square mean deviation of atomic position), SASA (solvent accessible surface), potential energy, and hydrogen bonding of collagen throughout the stretching process were obtained. The RMSD of the collagen fluctuated during the stretching process and tended to equilibrate. SASA increased with increasing voltage and reached a critical condition at 900 ps. In the molecular unwinding and uncoiling stage, the potential energy remained constant and it increased rapidly in the stage of stretching backbone. The numbers of hydrogen bonds within the collagen gradually decreased but increased between collagen and the aqueous solvent, with both hydrogen bonds reaching a turning point at 900ps. Note de contenu : - Research theory - Experimental procedures - Results and discussion : RMSD analysis - SASA analysis - Potential energy analysis - Hydrogen bonds analysis En ligne : https://drive.google.com/file/d/1_x0hOgHg-Dpk_o9VVc7w3D9eLZfokaEg/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38868 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23893	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)