Mechanical Properties of Alumina Foam/Tri-Functional Epoxy Resin Composites with an Interpenetrating Network Structure / Właściwości Mechaniczne Kompozytów Pianka Korundowa/ Trójfunkcyjna Żywica Epoksydowa O Strukturze Infiltrowanej

Archives of Metallurgy and Materials

M. Potoczek¹  J. Ligoda-Chmiel²  R. E. Śliwa³ 

[1] Rzeszów University of Technology, Faculty of Chemistry , 2 W. Poland Str ., 35-959 Rzeszów, Poland,;Rzeszów University of Technology, Faculty of Mechanical Engineering and Aeroanautic s, 2 W. Poland Str ., 35-959 Rzeszów, Poland;Rzeszów University of Technology, Faculty of Mechanical Engineering and Aeroanautic s, 2 W. Poland Str ., 35-959 Rzeszów, Poland,

关键词: Keywords: ceramic-polymer composites;    infiltration process;    Young’s modulus;    Kirchoff’s modulus;    impulse excitation of vibration;   

DOI  :  10.1515/amm-2015-0444

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Methods of measuring effective material properties, including Young’s, Kirchoff’s modulus or Poisson’s ratio for composites with an interpenetrating network structure, where the both constituent phases have widely different physical properties, do not lead to an unambiguous interpretation. The commonly- known static methods have the basic disadvantage that higher strain values are needed in order to obtain proper results which is generally impossible to achieve in the case of brittle materials, e. g. ceramics or polymers, as well as for composites created by connecting both these components. The measurement of strain values during the stress test, decreases the values of Young’s modulus from several per cent to several dozen per cent, due to appearance of micro fractures in the brittle materials. If there are differences in the values, then a special form and an appropriate amount of samples are needed. Dynamic methods of predicting an effective material properties (ultrasonic and impulse excitation of vibration techniques) are much more accurate, and their non- destructive nature mean that the samples can be used again in other experiments.

【 授权许可】

Unknown