Thermal Residual Stress And Tensile Strength of UACS/Al Laminate with Different Slit Angles
This paper focuses on the investigation of tensile strength and thermal residual stress in UACS/Al laminates.The UACS (unidirectionally arrayed chopped strands) is made by cutting parallel slits on unidirectional carbon fiber prepreg.Thus all of the carbon fibers in the cut prepreg are 25 mm in length.Six cases of UACS prepregs are prepared with different slit angle θ,which is the angle between slit and fiber direction,including 5.7o,11.3o,16.7o,31o,45o and 90o.A UACS/Al laminate consists of one UACS layer with four UACS plies and two aluminum layers,such as Al/UACS4/Al.Four pieces of UACS prepreg with alternate slit angle θ/-θ/ θ/-θ are stacked together in the same fiber direction.Then stacked UACS/Al laminate are cured using an autoclave.Tensile tests are performed to investigate the thermal residuals stress using the yielding-point-shift method.Experiment results show that thermal residual stress is reduced in the case of UACS/Al compared with conventional CFRP/Al.Among all the cases,specimen with slit angle of 11.3o is the most impressive one with 37.7% reduction of thermal residual stress.
Tensile Strength Thermal Residual Stress Carbon Fiber Laminate
J.Xue W.X.Wang Y.Takao T.Matsubara
Department of Aeronautics and Astronautics,Engineering School,Kyushu University,Motooka Nishiku Fuku Research Institute for Applied Mechanics,Kyushu University,Kasuga,Fukuoka 816-8580,Japan
国际会议
The tenth China-Japan joint conference on Composite Materials (第10届中日复合材料学术会议(CJJCC-10))
成都
英文
453-455
2012-09-08（万方平台首次上网日期，不代表论文的发表时间）