Figure 3From: Characterization of mechanical behavior of a porcine pulmonary artery strip using a randomized uniaxial stretch and stretch-rate protocolIllustration of various stretch histories with the same stretch and stretch rate at time t N . Although the stretch ratio functions λ(t)1, λ(t)2 and λ(t)3 give the same stretch and stretch rate at time t N , the average stretch ratios for the time duration t h for each are distinctly different.Back to article page