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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/106| Fatigue Behavior of Black Widow Major Ampullate Spider Silk (Comportamiento en Fatiga de Fibras de Seda de Viuda Negra provenientes de la Glándula Mayor) | |
| IRENE LUJAN REGALADO | |
| JOSE MARTIN HERRERA RAMIREZ | |
| Acceso Abierto | |
| Atribución | |
| Spiders can produce up to seven different kinds of silk according to the use the silk fiber will be given. It has been found that the silk type with the highest mechanical properties is the dragline silk from the Major Ampullate glands. The mechanical properties spider silk offers and the fact that it is produced under a green environment, make it much more attractive than most man-made materials. One of the drawbacks that this material presents is the variability in its mechanical properties, it is because of this that researchers have been trying to fully understand how silk fibers behave under different mechanical and environmental conditions to in the future be able to produce this material synthetically. In this work, the fatigue behavior of the Major Ampullate silk of Black Widow spider was studied. The results show that the fibers possess a high tensile strength and a high strain to failure. Additionally Raman spectroscopy showed that the reinforcing units (-sheets) of the fiber are aligned in the lengthwise direction. The silk fibers were fatigued tested up to 1 million cycles and the fibers did not break. The fatigue results also show that after fatiguing the silk fiber it strain hardens as the number of fatigue cycles increase. The Raman spectra of the post-fatigued fibers showed that the -sheet peak moved towards a smaller Raman wavenumber indicating the tensile stresses the fiber was subjected to. | |
| 2013-10 | |
| Tesis de maestría | |
| Inglés | |
| OTRAS ESPECIALIDADES DE LA BIOLOGÍA | |
| Aparece en las colecciones: | Maestría en Ciencia de Materiales |
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| Tesis Irene Lujan Regalado.pdf | 4.69 MB | Adobe PDF | Visualizar/Abrir |