Suppose you are testing the permeability of a cartilage sample. You apply a known pressure gradient across the sample with a permeability k and dimensions as shown below on left, and measure flow Q in the xy direction. You then compress the sample in the x2 direction to the dimensions shown below on right, and determine Q has been reduced by 80 percent. a) How much has the permeability changed after compression? Express your answer as a percentage of the original permeablity k. Does your answer make sense? Why or why not? The graph on the left shows the displacement of a piece of cartilage under compression by a constant load. b) What type of behavior is the cartilage exhibiting? c) Remembering what we know about the composition of cartilage, what is happening during phase A? B? C?




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Suppose you are testing the permeability of a cartilage sample. You apply a known pressure gradient across the sample with a permeability k and dimensions as shown below on left, and measure flow Q in the xy direction. You then compress the sample in the x2 direction to the dimensions shown below on right, and determine Q has been reduced by 80 percent. a) How much has the permeability changed after compression? Express your answer as a percentage of the original permeablity k. Does your answer make sense? Why or why not? The graph on the left shows the displacement of a piece of cartilage under compression by a constant load. b) What type of behavior is the cartilage exhibiting? c) Remembering what we know about the composition of cartilage, what is happening during phase A? B? C?


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