The wind turbine blades are exposed to various environments all the year round, especially temperature variations during the four seasons. To study the influences of temperatures on the mechanical properties of composite materials, the compression property in the 0°, 45°, and 90° directions of the multiaxial (triaxial and quadaxial) glass fiber warp-knitted composites at −30°C, 0°C, 20°C, and 40°C was analyzed, respectively. The stress–strain curves, strength, modulus, failure strain, and the relationship between strength and temperature were obtained. The results indicated that the compression performance decreased with the increase of temperature, and the effect of temperature on quadaxial composite was more significant than that of the triaxial composite. In addition, the failure mechanisms were also analyzed according to the fracture modes and scanning electron microscopic morphologies of composites.
JingLHeTChenX, et al.Study on tensile properties of polyester multi-axial warp-knitted fabric. Knit Ind2017; 12: 58–60(In Chinese).
2.
LomovSVChiTTVerpoestI. Mechanical properties of non-crimp fabric (NCF) based composites: stiffness and strength. In: LomovSV (ed.) Non-crimp Fabric Composites – manufacturing, properties and applications. Cambridge: Woodhead, 2011, pp. 263–287.
3.
WilhelmssonDGutkinREdgrenF, et al.An experimental study of fibre waviness and its effects on compressive properties of unidirectional NCF composites. Compos A Appl Sci Manuf2018; 107: 665–674.
4.
GaoXLiDWuW, et al.Experimental investigation of the tensile and bending behavior of multi-axial warp-knitted fabric composites. Textile Res J2016; 88(3): 333–344.
5.
YangXLiZGaoX. Study on compressive properties of 3D orthogonal woven and biaxial warp-knitted composites. Ind Textile2018; 36: 20–24(In Chinese).
6.
FerreiraLMGracianiEParísF. Three dimensional finite element study of the behaviour and failure mechanism of non-crimp fabric composites under in-plane compression. Compos Struct2016; 149: 106–113.
7.
WanYSunBGuB. Multi-scale structure finite element analyses of damage behaviors of multi-axial warp-knitted composite materials subjected to quasi-static and high strain rate compressions. J Textile Institute2016; 107: 879–904.
8.
FangFPanZGuB. Finite element analyses of compressive behaviors of biaxial warp-knitted composite material under various strain rates with a simplified geometrical model. J Textile Institute2015; 106(9): 1013–1026.
9.
MikhalukDSTruongTCBorovkovAI, et al.Experimental observations and finite element modelling of damage initiation and evolution in carbon/epoxy non-crimp fabric composites. Eng Fracture Mech2008; 75(9): 2751–2766.
10.
CuiYYinZ. Carbon-fibre-reinforced modified cyanate ester winding composites and their thermomechanical properties. High Perform Polym2018; 31: 154–167.
11.
ZegaouiADerradjiMDayoA, et al.High-performance polymer composites with enhanced mechanical and thermal properties from cyanate ester/benzoxazine resin and short Kevlar/glass hybrid fibers. High Perform Polym2018; 31(6): 719–732.
12.
ChengH. Temperature effect of interface bond strength of carbon fiber/epoxy resin composites. Zhongshan: Donghua University, 2016(In Chinese).
13.
WangYZhangJZhangJ, et al.Compressive behavior of notched and unnotched carbon woven-ply PPS thermoplastic laminates at different temperatures. Compos B Eng2018; 133: 68–77.
14.
LiXXuHMengW, et al.Tri-axial compressive properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures. Construct Build Mater2018; 190: 939–947.
15.
LiDZhaoCGeT, et al.Experimental investigation on the compression properties and failure mechanism of 3D braided composites at room and liquid nitrogen temperature. Compos B Eng2014; 56: 647–659.
16.
WangHSunBGuB. Coupling effect of temperature and braided angle on compressive behaviors of 3D braided carbon–epoxy composite at low temperature. J Compos Mater2017; 51(18): 2531–2547.
17.
CormierLJoncasSNijssenRPL. Effects of low temperature on the mechanical properties of glass fibre-epoxy composites: static tension, compression, R=0.1 and R=−1 fatigue of ±45° laminates. Wind Energy2016; 19(6): 1023–1041.
18.
LiDWangZDuanH, et al.Temperature effects on the compression behavior and failure of 3-D MWK glass fabric-reinforced epoxy composites. High Perform Polym2018; 31(4): 449–461.
19.
Pérez-PachecoEMoreno-ChulimMVValadez-GonzálezA, et al.Effect of the interphase microstructure on the behavior of carbon fiber/epoxy resin model composite in a thermal environment. J Mater Sci2011; 46(11): 4026–4033.
20.
LiDZhaoCJiangN, et al.Effect of temperature on bending properties and failure mechanism of three-dimensional multiaxial warp-knitted carbon/epoxy composites. High Perform Polym2016; 28(2): 239–252.
