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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2009-12-01

发表刊物：SENSOR LETTERS

收录刊物：Scopus、EI、SCIE

卷号：7

期号：6

页面范围：1044-1050

ISSN号：1546-198X

关键字：Nickel Powder; Cement-Based Composites; Piezoresistive Characteristic Model; Field Emission Effect

摘要：A constitutive model relating the change in the electrical resistivity to the applied compressive stress of nickel/cement composites containing nickel powders with needle-like surfaces is developed in this paper This model incorporates the field emission effect and the inter-particle separation change of nickel powders in composites within elastic regime under uniaxial compression The model is used to predict the piezoresistive characteristic behavior of cement-based composites containing nickel powders with different particle sizes. The predicted results are compared with the experimental data obtained on three kinds of composites, and good agreements are obtained.