Abstract
Lung is the respiratory organ and the important hematopoietic organ of the human body, which is easily damaged under impact load. Therefore, studying the mechanical behavior of the lung under impact load is an important way to understand its damage mechanism of it. Compression experiments of porcine lung tissue at a wide strain rate (0.001-3000 s−1) were carried out at room temperature. The modifications were made for the highly accurate mechanical measurement of the tissue due to its low wave impedance. The results show that its behaviors consist of three stages, linear elasticity, plateau stage, and compaction. The lung tissue presents distinct rate-dependence in the compaction stage. Furthermore, it behaves nearly similarly under both the loading directions of vertical and parallel trachea, which facilitates to a demonstration of its isotropy.
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