共查询到20条相似文献,搜索用时 125 毫秒
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陈杰 《玻璃钢/复合材料》2012,(4):106-108,64
近年来,随着风电叶片越做越大,叶片的生产周期也随之变长。为了有效缩短叶片的生产周期,降低企业的生产成本,必须从环氧树脂固化工艺方面进行研究,在保证产品力学性能的前提下,尽可能的缩短生产周期。本文选用四组不同的工艺方法进行比较,研究结果表明,可以通过力学和热学手段来评估固化过程并通过合理的调控升温程序来缩短生产周期。 相似文献
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作为一个专用程序,PROPID在水平轴风力机叶片的逆向设计与分析中有许多独特的优点。本文在介绍PROPID程序的同时,选取一风力机叶片为计算模型,使用PROPID进行重新优化设计和分析。通过分析比较发现,PROPID程序在叶轮的功率计算、外形几何尺寸设计、最佳安装角和转速的确定方面均有较好表现,并能正确反映风机叶轮的气动理论,是一种很实用的风力机叶轮逆向设计和分析程序,对提高风力机的气动设计水平、缩短设计周期有很大帮助。 相似文献
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主要探讨了如何缩短隧道窑烧成周期。通过调整隧道窑的工艺控制来达到缩短烧成周期的目的,并在生产中得到了有效的验证。 相似文献
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设计了基于电阻丝加热方式的风电叶片成型模具多路温度控制系统,介绍了该系统的整体构成、控制算法和流程控制的设计,并对其控制精度进行了分析。 相似文献
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将风电叶片用真空灌注型环氧树脂体系MERICAN 3311A/B与同类两款产品进行了对比分析,研究了三种树脂体系对玻纤的浸润性;采用真空导入成型技术制备了复合材料板,并对复合材料的力学性能进行了研究。结果表明,MERICAN3311A/B粘度低、浸润性良好、FRP力学性能高,与纤维的匹配性良好,达到甚至某些方面已超越国内外同类进口产品的水平,能够满足风电叶片对树脂的性能要求。 相似文献
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模内涂装是提高风电叶片涂装效率的一种有效方式。相比模外涂层体系,风电叶片用模内涂层体系在工艺性能方面有一些特殊性要求。研究了三种聚氨酯模内胶衣在风电叶片中的工艺适用性,通过可操作性、占模时间、与玻璃钢之间的附着力、在实际叶片模具上的脱模性能以及脱模后对其覆盖的玻璃钢中灌注缺陷的可观察性等性能研究发现,其中两种聚氨酯模内胶衣适用于风电叶片的生产工艺过程。 相似文献
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复合材料风电叶片的发展现状及若干问题的对策 总被引:7,自引:0,他引:7
综叙复合材料在风力发电机转子叶片上的应用及生产现状,介绍现有复合材料风电叶片的结构、材料体系、生产工艺及发展方向等,针对目前大型风电叶片生产过程中遇到的一些问题提出解决方案或构想。可以预见,随着叶片的日益大型化,内置热源的大型复合材料组合模具、改进的真空导入树脂模塑法及可回收利用的热塑性叶片可能是今后风电叶片的主要发展方向。 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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《国际智能与纳米材料杂志》2013,4(3):120-133
In this study, multifunctional carbon nanofiber (CNF) paper-based nanocomposite coating was developed for wind turbine blades. The importance of vibration damping in relation to structural stability, dynamic response, position control, and durability of wind turbine blades cannot be underestimated. The vibration damping properties of the nanocomposite blades were significantly improved and the damping ratio of the nanocomposite increased by 300% compared to the baseline composite. In addition, the CNF paper-based composite exhibited good impact-friction resistance, with a wear rate as low as 1.78×10?4mm3/Nm. The nanocomposite also shows the potential to improve the blockage of water from entering the nanocomposite, being a superhydrophobic material, with a contact angle higher than 160.0°, which could improve the longevity of a wind turbine blade. Overall, multifunctional nanocomposite coating material shows great promise for usage with wind turbine blades, owing to its excellent damping properties, great friction resistance, and superhydrophobicity. 相似文献