以研发和批量阶段的拉挤板产品测试数据为例,分别计算了2种可靠度和样本容量下,基于风电行业标准GL2010、DNVGL-ST-0376的特征值;同时也计算了基于Weibull分布B基准值、基于统计过程控制理论PPK下限值.分析了不同计算方法之间的差异,评估了4种统计处理值作为材料许用值的可行性,给出了材料许用值计算方法.
采用红外焊接、超声波焊接、感应焊接3种焊接方式,研究了以Elium为树脂基体的热塑性复合材料的焊接特性.通过焊接接头的拉伸剪切强度评估焊接效果.结果表明:Elium树脂在200℃以上呈熔融状态;红外焊接接头拉伸剪切强度达8.89 MPa,超声波焊接接头拉伸剪切强度达11.93 MPa,感应焊接接头拉伸剪切强度达10.02 MPa,且不同焊接方式的焊接接头拉伸剪切强度数据离散较大.焊接技术有望替代胶粘剂应用于风机叶片各部件间的连接.
The vacuum-assisted infusion molding of a thermoplastic resin from Arkema for wind turbine blades reinforced with different layers of glass fabrics was studied by staggered lay-up of fabrics. The results showed that the reactive thermoplastic resin had good infusion effect on different layers of glass fabrics. The infusion methods for different glass fabrics were not the same. The test pieces were cured at room temperature, and the reaction had the characteristics of slow initiation, fast progress and quick termination. Reactive thermoplastic resin is expected to be used in the design and manufacture of wind turbine blades.
