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首页> 外文期刊>Journal of aerospace engineering >Bolting Elements of Helicopter Fuselage and Tail Boom Joints Using Acoustic Emission Amplitude and Absolute Energy Criterion
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Bolting Elements of Helicopter Fuselage and Tail Boom Joints Using Acoustic Emission Amplitude and Absolute Energy Criterion

机译:基于声发射幅度和绝对能量准则的直升机机身和尾臂接头的螺栓连接元件

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This research was devoted to the development of a structural health monitoring (SHM) system for helicopter structures using the acoustic emission (AE) method. Experiments were carried out on a test bench to test helicopter fuselage and tail boom joints under dynamic loads. During the experiments, several bolted joints fractured. The process of crack development in the bolt material was controlled by the AE method. The results presented in the paper link AE parameters to the process of crack development. Fractographic analysis was used to validate the experimental results. The dependence of fatigue crack growth in a bolt material taking into account bolt retightening in the joint between the tail boom and fuselage was revealed. (c) 2019 American Society of Civil Engineers.
机译:这项研究致力于使用声发射(AE)方法开发用于直升机结构的结构健康监测(SHM)系统。实验是在试验台上进行的,以测试直升机在动态载荷下的机身和尾桁节。在实验过程中,几个螺栓连接处断裂。螺栓材料中的裂纹发展过程是通过AE方法控制的。本文中提出的结果将AE参数与裂纹发展过程联系起来。分形分析用于验证实验结果。揭示了考虑螺栓在尾梁和机身之间的连接处重新拧紧后,螺栓材料中疲劳裂纹扩展的依赖性。 (c)2019美国土木工程师学会。

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  • 来源
    《Journal of aerospace engineering》 |2019年第3期|04019005.1-04019005.12|共12页
  • 作者单位

    Riga Tech Univ, Inst Aeronaut, Kalku St 1, LV-1658 Riga, Latvia;

    Riga Tech Univ, Inst Aeronaut, Aircraft Theory & Struct Dept, Kalku St 1, LV-1658 Riga, Latvia;

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