4. For each elapsed time calculate the Stress () of the tissue which is under a

Question

4. For each elapsed time calculate the Stress () of the tissue which is under a constant Strain (). Standard units for Stress are N/m² which is called a Pascal (Pa). With these small area numbers like those in human tissues you will get large values so often they are expressed in Megapascal (MPa). @1sec F = 100N area = .005meters @2sec F = 100N, area = .010meters @3sec F = 100N, area = .020meter @4sec F = 100N, area = .025meters @5sec F = 100N, area = .028meters

5. Plot the change in Stress over time from problem 4 on a graph.

What phenomenon is occurring?

What type of materials is this unique to?

What explains the phenomenon?

Explanation / Answer

4) Stress is defined as the Force acting per unit area.

Stress @1sec = F/A = 100N/ 0.005m2 = 20,000 Pa

Stress @ 2sec = F/A = 100N/0.010m2 = 10,000 Pa

Stress @ 3sec = F/A = 100N/0.020m2 = 5,000 Pa

Stress @ 4sec = F/A = 100N/0.025m2 = 4,000 Pa

Stress @ 5sec = F/A = 100N/0.028m2 = 3,571.428 Pa

As we can Observe from the Trend, due to the Stress Applied, The Tissue is undegoing Expansion.

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