John Steeneck Clemmer
Master of Science thesis, Biomedical Engineering, Mississippi State University, August 7, 2010.
Les titres, résumés et légendes des publications sont présentés en anglais.
The ultrastructural mechanism for strain rate sensitivity of collagenous tissue has not been well studied at the collagen fibril level. The objective is to reveal the mechanistic contribution of the collagen fibril to strain rate sensitivity. Collagen fibrils underwent significantly greater fibril strain relative to global tissue strain at higher strain rates. A better understanding of tendon mechanisms at lower hierarchical levels would help establish a basis for future development of constitutive models and assist in tissue replacement design. High rate mechanical property of tendon was also studied. Tendon was compressed under high strain rate (550 /s) using a polycarbonate split Hopkinson pressure bar (PSHPB). The objectives are to investigate the tissue behavior of porcine tendon at high rates. Tendon’s high rate behavior was compared with brain and liver at both hydrated and dehydrated states to investigate how water content and ultrastructural affect high rate responses of soft tissues.
Utilisation des équipements
Le système Biosyntech Mach-1 Motion a servi aux essais de traction interrompue de fascicules de tendon patellaire de lapin à trois vitesses de déformation, pour étudier leur sensibilité à la vitesse et leur module tangent. La relaxation des contraintes après chargement a également été enregistrée, avec comparaison entre fixateur et tampon hydratant.
Article et documents
Consulter la source
Matériaux (1)
Ligament et tendon
Configurations de test (2)
