Effect of NiTi content and test temperature on mechanical behaviors of NiTi–PU composites

Autor: Xingke Zhao, Tao Chen, Shufan Wang
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: International Journal of Lightweight Materials and Manufacture, Vol 1, Iss 4, Pp 215-218 (2018)
Druh dokumentu: article
ISSN: 2588-8404
DOI: 10.1016/j.ijlmm.2018.09.003
Popis: For purpose of developing damping materials with increased damping capacity over a wide band, NiTi–PU composites were fabricated by vacuum molding polyether polyurethane melt with NiTi alloy chips additive. The composites were tested using three-point bending at various testing temperatures. Appreciable improvements were observed in bending modulus and load-deflection hysteresis loops of PU matrix. The bending modulus and hysteresis loop area of a composite with 70% NiTi volume content reach a maximum, which are 5.4 times and 5.6 times higher than those of PU matrix, respectively. The mechanism of bending modulus enhancement of NiTi additive was discussed. Keywords: Nitinol, Polyurethane, Composites, Bending modulus, Hysteresis loop
Databáze: Directory of Open Access Journals