Experimental investigation on the yield loci of PA66 |
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| Institution: | 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China;2. Nano-science and Nano-technology Research Center, Shanghai University, Shanghai 200444, PR China;3. The State Key Laboratory for Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR China;4. School of Iron and Steel, Soochow University, Suzhou 215021, PR China |
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| Abstract: | Compression, tensile and mixed compression/shear tests were performed on PA66 by using a universal material testing machine in order to identify the experimental yield loci of PA66. For the mixed compression/shear tests, instead of using a complex loading device, SCS (shear-compression specimens) were used to generate the additional shear stresses. Then, the mechanical behavior of materials under complex stress states can be obtained for further analysis. Results show that the experimental yield loci of PA66 obtained by the test method proposed in the present paper agree well with the theoretical model based on three stresses invariant, which indicates the reliability of the test method. |
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| Keywords: | Polymers Elastic properties Shear-compression specimen Yield surface Test method |
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