Effect of Microdamage in Tensile Testing
of Chicken Skin
Name: Arif
Rashid
Class: BE 210
The overall goal of this experiment is to quantitatively characterize skin microdamage. Two types of microdamage will be induced: sandpaper abrasion and puncturing. Although the general characterization of stress-strain curves yielded from microdamaged skin is the goal, quantitative analysis will be focused only on the pre ultimate stress region of the curve. The variables measured will be the magnitude of the drop (peak to trough) of a microfailure in the pre ultimate stress region, the stress at which it occurred, and that stress as a percentage of ultimate stress. These quantities will be measured for all microfailures in the pre ultimate stress region. Additionally, the number of microfailures before and after the ultimate stress point will be noted, but will not be statistically analyzed. The hypothesis is that the aforementioned quantities (microfailure peak drop magnitude, stress at which microfailure occurred, and that stress as a percentage of ultimate stress) will be different between puncture and sandpaper damage.