APPROXIMATE MEANS FOR EVALUATING TENSIL STRENGTH OF HIGH POROSITY MATERIALS

来源期刊：中国有色金属学报(英文版)1999年第1期

论文作者：Liu Peisheng Fu Chao Li Tiefan

文章页码：70 - 78

Key words：high porosity material;　tensile strength;　evaluation

Abstract: Based on the simplified structure model of high porosity materials, the formulas for approximately evaluating the tensile strength of these materials have been derived from the corresponding deductions taken by means of the relative theories about geometry and mechanics. The results show that, the tensile strength of these materials not only associates with the material sort and production method, but do further have a direct value relationship with the porosity,θ.This value relationship can be specifically expressed by the power of the item (1-θ), and it makes the tensile strength variation display a complicated nonlinear law with the porosity. In addition, the application of those formulas has been investigated with the corresponding experiment on a nickel foam.