Chicken Skin and Chicken Skin Sutures
Name: Neil Cisper
Class: BE 210
Hypothesis is the pieces of skin without stitches will have significantly greater elastic modulus than the pieces of skin that are sewn together. The total length of each set of pieces will be identical to allow for the best testing. The gap between the two pieces that are stitch together will try and be as close as possible.
The main objective is to test the typical type of stitching used at a hospital (running lock: see Appendix) and determine how vulnerable the stitching is when it has just been completed. Doctors can use the results to determine the amount of flexibility the stitches have after they have been completed. They can tell their patients what activities or movements the individual is limited to.
Previous experiments on the
different types of sutures gave the following data. The data was analyzed for significance by
using regression analysis and confidence intervals (n=4 each). The slope
intervals (measured stress over strain) for running locked and pulley stitch were
(0.00285, 0.00356) and (0.0021, 0.00298), respectively. The overlap of
intervals suggests the slopes are not significantly different. Similarly, the
intercept intervals for running locked and pulley stitch were (0.0530, 0.5653)
and (-0.1052, 0.5395), respectively. The data also suggest that the intercepts
are not significantly different.2