• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the institution of mechanical engineers >Assessment of compacted-cementitious composites as porous restrictors for aerostatic bearings
【24h】

Assessment of compacted-cementitious composites as porous restrictors for aerostatic bearings

机译：评估压实水泥复合材料作为空气静压轴承的多孔限流器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cementitious composites reinforced with silica, silicon carbide or carbon microfibres are designed, manufactured, characterised and tested as porous restrictor for aerostatic bearings. Carbon microfibres are residues obtained from the cutting process of carbon fibre-reinforced polymers. Porosity, permeability, flexural strength and stiffness are quite relevant in the design of aerostatic porous bearings. A 3(1)4(1) full factorial design is carried out to identify the effects of particle inclusion and water-to-cement ratio(w/c) factors on the physical and mechanical properties of cementitious composites. Higher density material is achieved by adding silicon carbide. Higher porosity is obtained at 0.28 w/c level when silica and silicon carbide are used. Carbon microfibres are not effective under bending loads. Higher compressive strength is reached especially when silica particles are combined with 0.33 or 0.35 w/c. According to the permeability coefficient values the cementitious composites consisted of CMF (0.28 w/c), silica (0.30 w/c) or silicon carbide (0.30 w/c) inclusions are promising as porous restrictor; however, carbon microfibre porous bearings achieved the lowest air gap variation under the tested working conditions.
机译：设计，制造，表征和测试用二氧化硅，碳化硅或碳微纤维增强的水泥基复合材料，作为空气静压轴承的多孔限流器。碳微纤维是从碳纤维增强聚合物的切割过程中获得的残留物。孔隙率，渗透率，弯曲强度和刚度在空气静压多孔轴承的设计中非常重要。进行了3（1）4（1）全因子设计，以确定颗粒夹杂物和水灰比（w / c）因子对水泥基复合材料物理和机械性能的影响。通过添加碳化硅可获得更高密度的材料。当使用二氧化硅和碳化硅时，以0.28w / c的水平获得更高的孔隙率。碳微纤维在弯曲载荷下无效。达到更高的抗压强度，尤其是当二氧化硅颗粒与0.33或0.35 w / c结合时。根据渗透系数值，由CMF（0.28 w / c），二氧化硅（0.30 w / c）或碳化硅（0.30 w / c）夹杂物组成的胶结复合材料有望成为多孔限流剂。但是，在测试的工作条件下，碳微纤维多孔轴承的气隙变化最小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号