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首页> 外文期刊>Journal of Materials Research >A novel trench fibre push-out method to evaluate interfacial failure in long fibre composites
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A novel trench fibre push-out method to evaluate interfacial failure in long fibre composites

机译：一种新型沟槽光纤推出方法，以评估长纤维复合材料的界面失效

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摘要

Traditional fibre push-outs for the evaluation of interfacial properties in long fibre ceramic matrix composites present their limitations-solutions for which are addressed in this work by introducing the novel trench push-out test. The trench push-out makes use of a FIB milling system and an SEM in-situ nanoindenter to probe a fibre pushed into a trench underneath, allowing in-situ observations to be directly correlated with micromechanical events. SiC_f/BN/SiC composites-candidate material for turbine engines-were used as model materials in this work. Different fibre types (Hi-Nicalon and Tyranno type SA3) were coated with BN interphases, presenting mean interfacial shear stresses of 14± 7 MPa and 20 + 2 MPa, respectively, during fibre sliding.The micromechanical technique enabled visualisation of how defects in the interphase (voids, inclusions & milled notches) or in the fibre (surface asperities, non-uniform coatings) affected the variability of interfacial property measurement.
机译：用于评估长纤维陶瓷基质复合材料的界面性质的传统纤维推出呈现它们的限制 - 通过引入新的沟槽推出测试来解决这项工作中的解决方案。 沟槽推出的推出利用FIB铣削系统和SEM原位纳米丁烯探针探测推入下面的沟槽的纤维，允许原位观察与微机械事件直接相关。 SIC_F / BN / SIC复合材料 - 涡轮发动机的候选材料 - 在这项工作中用作模型材料。 不同的纤维类型（HI-NICICON和Tyranno型SA3）涂有BN界性，分别在光纤滑动期间呈现14±7MPa和20 + 2MPa的平均界面剪切应力。微机械技术使可视化的缺陷 相互间（空隙，夹杂物和研磨的凹口）或纤维（表面粗糙度，非均匀涂层）影响了界面性质测量的可变性。

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  • 来源
    《Journal of Materials Research》 |2021年第11期|2305-2314|共10页
  • 作者

    Robin M. G. De Meyere; Kay Song; Louise Gale; Stephen Harris; Ian M. Edmonds; Thomas J. Marrow; Eduardo Saiz; Finn Giuliani; David E. J. Armstrong; Oriol Gavalda-Diaz;

  • 作者单位

    Department of Materials University of Oxford Oxford OX 1 3PH UK;

    Department of Engineering Science University of Oxford Oxford OX1 3PJ UK;

    Rolls-Royce Plc Derby DE24 8BJ UK;

    Rolls-Royce Plc Derby DE24 8BJ UK;

    Rolls-Royce Plc Derby DE24 8BJ UK;

    Department of Materials University of Oxford Oxford OX 1 3PH UK;

    Centre for Advanced Structural Ceramics Department of Materials Imperial College London London SW72AZ UK;

    Centre for Advanced Structural Ceramics Department of Materials Imperial College London London SW72AZ UK;

    Department of Materials University of Oxford Oxford OX 1 3PH UK;

    Centre for Advanced Structural Ceramics Department of Materials Imperial College London London SW72AZ UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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