Instron Uniaxial Tensile Testing and
Image Analysis of Suture Material Performance in Chicken Skin
Class:
BE210
Group: 102_B5
Members:
Megan Liszewski
Anthony So
Date:
April 2006
Powerpoint Presentation
Full Text
It is hypothesized that when chicken skin is placed under tensile load, the non-biodegradable suture, silk, will perform better than the biodegradable suture, catgut. High performance is determined by which suture will more tightly hold together a cut in the chicken skin while sustaining a greater load. This will be evaluated by measuring the cut width of the frame at the time of ultimate strength of the suture using BMPReader. Ultimate strength is the point at which the sample sustains a maximum load. The ultimate force sustained by the suture will also be factored into the effectiveness of the suture material. Therefore, a trial which yields a small cut width at the time of ultimate strength and sustains the largest maximum load will be considered effective. The load is applied when the Instron crosshead moves at a rate of 50mm/min. A video camera that takes 20 fps will be used in conjunction with the Instron to correlate the load and deformation experienced by the chicken skin and stitches with the precise location of deformation on the sample. The video camera can be used to detect slippage and view deformation of the chicken skin. The objective is to determine whether catgut or silk will perform better. Because both samples will be deforming at a rate of 50mm/min, it is preferred for deformation to occur as stretch in other areas of the chicken skin, as to not agitate the cut.