共查询到18条相似文献,搜索用时 62 毫秒
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缩短复合材料叶片制造周期的研究 总被引:1,自引:0,他引:1
以缩短复合材料叶片制造周期2h为前提,通过调整升温速度和最高温度点的保温时间,模拟了叶片的4种生产工艺。通过对这4种工艺制得的样品进行力学性能和热学性能的测试,探索缩短风机叶片生产周期的方法,为节约成本找出实验依据。 相似文献
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复合材料与风机叶片 总被引:3,自引:1,他引:3
陈绍杰 《高科技纤维与应用》2007,32(3):8-12
介绍了风机叶片研发的趋势以及复合材料叶片设计、分析、材料、制造和试验验证的相关技术,给出了碳纤维在叶片上应用的现状和前景以及有关叶片的新兴技术。提出了发展我国叶片技术的相关建议。 相似文献
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GAMESA创新技术公司与M.Torres集团公司荣获2011年JEC风能类别创新奖。他们合作开发了用于制造风力机叶片的全自动化设备。 相似文献
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2MW风机复合材料叶片材料及工艺研究 总被引:3,自引:2,他引:1
风力机在工作过程中,风机叶片要承受强大的风载荷、气体冲刷、砂石粒子冲击、紫外线照射等外界作用.为了提高复合材料叶片的栽荷、耐腐蚀和耐冲刷等性能,必须对树脂基体系统进行精心设计和改进,采用性能优异的环氧树脂,改善玻璃纤维/树脂界面的粘结性能,提高叶片的承载能力,扩大玻璃纤维在大型叶片中的应用范围.通过对新型环氧树脂的研究和对传统叶片工艺的创新,研究结果表明复合材料叶片可以达到在恶劣工作环境中长期使用的性能. 相似文献
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毕鸿章 《高科技纤维与应用》2009,34(4):49-49
位于美国肯塔基卅IHebron市的MAG公司,将在美国风能协会(AWEA)于5月4~6日在芝加哥市举办的WINDPOWER2009(风动力2009)展览会上,介绍一种新系统,允许自动化制造复合材料铺迭系统(RMPS)与快速固化模制系统,使工作内容减少2/3,生产能力达到双倍。RMPS是一种自动化风机叶片模制设备,其本身能给模具上喷涂、能使玻璃纤维与碳纤维分布/铺迭及能施加树脂。它提供材料分布与铺迭速度为3m/s,并且在叶片蒙皮、翼梁盖和薄网模具上,采用激光观测交叉部位和纵向基底皱纹。该系统铺迭时间可减少85%,决定于层合进度,叶片长度为45m。 相似文献
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复合材料风扇叶片是商用大涵道比涡扇发动机的重要转动部件,其重量和性能将直接影响发动机的推重比和性能。复合材料风扇叶片具有结构复杂、受载工况恶劣、制造质量要求高等特点,为了提升国产商用航空发动机复合材料风扇叶片成型质量,针对复合材料风扇叶片成型工艺关键技术难点问题,从叶片模具设计与材料选用、大厚度榫头铺层设计与铺叠方法、固化工艺精细化控制及全型面拟合自适应加工等方面研究了制造工艺对叶片质量的影响,对比分析了不同工艺方法下叶片叶型尺寸、内部纤维取向、制造缺陷、随炉件力学性能水平的差异。结果表明,选用Invar钢作为模具材料,改善榫头铺层插入层的设置位置、数量和铺层顺序,精细化控制固化温度、压力等关键工艺参数,全型面拟合自适应加工等方法有效提高了叶片成型质量和尺寸符合性。 相似文献
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K. B. Katnam A. J. Comer D. Roy L. F. M. da Silva T. M. Young 《The Journal of Adhesion》2015,91(1-2):113-139
Renewable energy sources such as wind energy—together with energy-efficient technologies—are essential to meet global energy demands and address climate change. Fiber-reinforced polymer composites, with their superior structural properties (e.g., high stiffness-to-weight) that allow lightweight and robust designs, play a significant part in the design and manufacture of modern wind turbines, especially turbine blades, for demanding service conditions. However, with the current global growth in onshore/offshore wind farm installations (with total global capacity of ~282 GW by the end of 2012) and trend in wind turbine design (~7–8 MW turbine capacity with ~70–80 m blade length for offshore installations), one of the challenges that the wind energy industry faces with composite turbine blades is the aspect of structural maintenance and repair. Although wind turbines are typically designed for a service life of about 20 years, robust structural maintenance and repair procedures are essential to ensure the structural integrity of wind turbines and prevent catastrophic failures. Wind blades are damaged due to demanding mechanical loads (e.g., static and fatigue), environmental conditions (e.g., temperature and humidity) and also manufacturing defects. If material damage is not extensive, structural repair is the only viable option to restore strength since replacing the entire blade is not cost-effective, especially for larger blades. Composite repairs (e.g., external and scarf patches) can be used to restore damaged laminate/sandwich regions in wind blades. With composite materials in the spar (~30–80 mm thick glass/carbon fiber laminates) and aerodynamic shells (sandwich sections with thin glass fiber skins and thick foam/wood as core), it is important to have reliable and cost-effective structural repair procedures to restore damaged wind blades. However, compared to aerospace bonded repairs, structural repair procedures in wind blades are not as well developed and thus face several challenges. In this regard, the area of composite repair in wind blades is broadly reviewed to provide an overview as well as identify associated challenges. 相似文献
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对比了环氧树脂和不饱和聚酯的各项性能,通过对树脂的黏度-时间曲线测试,结果显示不饱聚酯在整个操作时间内黏度变化不大,具有优异的工艺调控性。结合扫描电子显微镜(SEM)对两种树脂断口形貌的观察和力学性能测试来研究两种树脂的区别,结果表明,虽然不饱和聚酯的弯曲强度和抗压强度较高,但是平均2.41%的断裂伸长率远低于环氧树脂的8.71%。由玻璃化转变温度(Tg)测试分析主要是不饱和聚酯内自由体积较低,在本体受到拉伸时无法通过分子内链段的运动来降低体系内拉应力,所以本体脆性增大,最终导致了材料在变形量较大时的使用受到限制。 相似文献
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J. R. M. d'Almeida F. L. Ribeiro I. G. Alves 《Polymer-Plastics Technology and Engineering》2013,52(12):1304-1309
The residues from the final hydrometallurgical refining operation from a zinc plant were characterized in respect to their morphology, and were sieved in different granulometric fractions. This waste was incorporated into an epoxy resin, and the wear behavior of the composites was evaluated. The effect of the volume fraction of filler, and of the mean particle size was analyzed and the optimum values of these parameters were determined. Wear mechanisms were evaluated by scanning electron microscopy. With the experimental values obtained for the material with the best wear behavior a case study was performed, and the expendable coating of a conveyor belt used by the cement industry was designed, and the thickness of the composite wear resistant coating layer was evaluated. The results show that the composite developed can be feasible for practical use. 相似文献
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针对某型机泡沫填充帽形加筋结构复合材料机翼壁板开展了成型工艺研究。结果表明,壁板所用复合材料的性能满足帽形加筋壁板二次胶接的工艺需求;在帽形加筋长桁与蒙皮进行二次胶接前对胶接部位采用400#砂纸进行打磨,可以保证胶接性能;采用室温加压工艺可以保证复合材料构件的内部质量和厚度精度要求;在帽形加筋壁板进行二次胶接固化时采用... 相似文献