کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1507519 | 1511054 | 2013 | 7 صفحه PDF | دانلود رایگان |
• We studied the cryogenic mixed-mode II/III fatigue delamination growth in woven laminates.
• The resistance to fatigue delamination growth at cryogenic temperatures is higher than that at room temperature.
• The fracture surfaces show the presence of matrix hackles.
• The inclined hackles are identified with the mixed-mode II/III delamination growth.
We investigate the cryogenic delamination growth behavior in woven glass fiber reinforced polymer (GFRP) composite laminates under mixed-mode II/III fatigue loading. Fatigue delamination tests were conducted with six-point bending plate (6PBP) specimens at room temperature, liquid nitrogen temperature (77 K) and liquid helium temperature (4 K), and the delamination growth rate data for various mixed-mode ratios of Modes II and III were obtained. The energy release rate was evaluated using the three-dimensional finite element method. In addition, the fatigue delamination growth mechanisms were characterized by scanning electron microscopic observations of the specimen fracture surfaces.
Journal: Cryogenics - Volume 58, December 2013, Pages 55–61