期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 80, 期 -, 页码 397-405出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2015.06.026
关键词
Polyetheretherketone; Fatigue; Dynamic modulus; Storage and loss modulus; Energy dissipation
资金
- Austrian Government
- State Government of Styria
- State Government of Lower Austria
- State Government of Upper Austria
Tensile fatigue tests of PEEK at high load levels were carried out and analyzed regarding the dynamic mechanic behavior of the material during the tests. The experiments were conducted in the high stress tensile regime of PEEK. After a short period of unsteady temperature increase distinct material changes were observed during the tests at medium and high load levels. The storage modulus increased continuously while the loss modulus, loss factor (tan (5) and the dissipation energy rate decreased continuously. It was concluded that the accumulation of residual stresses because of partially irreversible deformation causes this effect. (C) 2015 Elsevier Ltd. All rights reserved.
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