Fracture of soft cellular solids—Case of non-crosslinked polyethylene foam
Fracture of soft cellular solids—Case of non-crosslinked polyethylene foam
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软质多孔固体的断裂——非交联聚乙烯泡沫的案例
DOI：
10.1209/epl/i2006-10328-9
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
K. Okumura
中科院分区：
文献类型：
--
作者：
Y. Shiina;Y. Hamamoto;K. Okumura
杨氏模量E大于3000 MPa的多孔固体（多孔材料）的断裂力学性能已经得到了很好的了解；建立了孔隙度与断裂力学量之间的标度关系，该关系可以用基于胞状固体几何参数的理论来解释。在本研究中，我们通过实验获得了E在1mpa左右的极软聚乙烯泡沫的断裂能。我们发现了不同于硬泡沫的标度规律，这可以通过独立于泡沫结构参数的考虑来理解。
Fracture mechanical properties of hard cellular solids (porous materials) with the Young modulus E larger than 3000 MPa have been well understood; scaling relations between fracture mechanical quantities and porosity are established, which can be explained by a theory based on the geometrical parameters of a cellular solid. In this study, we obtain experimentally the fracture energy of a very soft polyethylene foam with E around 1 MPa. We find scaling laws different from those for hard foams, which can be understood by considerations independent of the structural parameters of foams.