Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Mechanical Engineering
Thermal & Mechanical Analysis Of Bombyx Mori Silk Nanofibers, Justin Busnot
Thermal & Mechanical Analysis Of Bombyx Mori Silk Nanofibers, Justin Busnot
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
This thesis presents a study on the thermomechanical properties of Bombyx Mori silk nanofibers. These nanofibers were obtained from silkworm cocoons which were degummed to separate the fibroin and the sericin, the two proteins that make up silk. The fibroin was then centrifuged to remove insoluble particles and stored and 4°C before the electrospinning process. A parametric study of the electrospinning process was carried out in order to identify the factors allowing to obtain optimal mechanical properties. The current as well as the flow rate applied, the diameter of the syringe, the distance separating the syringe from collector or even …
Mechanical Testing Device For Viscoelastic Biomaterials, Jeff D. Berg
Mechanical Testing Device For Viscoelastic Biomaterials, Jeff D. Berg
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
Nearly all biologic tissues exhibit viscoelastic behavior. This behavior is characterized by hysteresis in the response of the material to load or strain. This information can be utilized in extrapolation of life expectancy of vascular implant materials including native tissues and synthetic materials. This behavior is exhibited in many engineering materials as well such as the polymers PTFE, polyamide, polyethylene, etc. While procedures have been developed for evaluating the engineering polymers the techniques for biologic tissues are not as mature. There are multiple reasons for this. A major one is a cultural divide between the medical and engineering communities. Biomedical …