Lai-Fook S J, Hyatt R E, Rodarte J R
J Appl Physiol Respir Environ Exerc Physiol. 1978 Jun;44(6):853-8. doi: 10.1152/jappl.1978.44.6.853.
Isolated dog lobes were maximally trapped with air, and their parenchymal elastic properties were measured at the trapped volume. Indentation tests were performed on the surface of the lobes, followed by uniaxial and torsion tests on excised pieces of parenchyma. Similar values for Young's modulus were obtained from the indentation and uniaxial tests. The values for the shear modulus from the torison tests also were consistent with Young's modulus measured by the other procedures. The indentation test provided an accurate estimate of Young's modulus or the shear modulus for trapped lobes, and the results suggest that it is a valid method for estimating these constants in nontrapped lobes.
将离体犬肺叶用空气最大限度地充盈，然后在充盈体积下测量其实质弹性特性。在肺叶表面进行压痕试验，随后对实质切除块进行单轴试验和扭转试验。压痕试验和单轴试验得到的杨氏模量值相似。扭转试验得到的剪切模量值也与通过其他方法测得的杨氏模量一致。压痕试验能准确估计充盈肺叶的杨氏模量或剪切模量，结果表明它是估计未充盈肺叶这些常数的有效方法。
