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Updated: Apr 28, 2026

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
Considerable different frequency dependence of dynamic tensile modulus between self-heating (Joule heat) and external
Rong Zhang1, Yuezhen Bin, Enyuan Dong
1Department of Polymer Material Science, Faculty of Chemical, Environmental and Biological Science, and ‡Department of Electrical and Electronics Engineering, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology , Dalian 116024, China.
Abstract:
Dynamic tensile moduli of polyethylene--nickel-coated carbon fiber (NiCF) composites with 10 and 4 vol % NiCF contents under electrical field were measured by a homemade instrument in the frequency range of 100--0.01 Hz. The drastic descent of the storage modulus of the composite with 10 vol % was verified in lower frequency range with elevating surface temperature (T(s)) by self-heating (Joule heat). The composite was cut when T(s) was beyond 108 °C. On the other hand, the measurement of the composite with 4 vol % beyond 88 °C was impossible, since T(s) did not elevate because of the disruption of current networks. Incidentally, the dynamic tensile moduli by external heating could be measured up to 130 and 115 °C for 10 and 4 vol %, respectively, but the two composites could be elongated beyond the above temperatures. Such different properties were analyzed in terms of crystal dispersions, electrical treeing, and thermal fluctuation-induced tunneling effect.
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