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    • 6. 发明授权
    • Ultrasonic method to verify the interference fit of fasteners
    • 超声波检测紧固件过盈配合的方法
    • US08973441B1
    • 2015-03-10
    • US14047925
    • 2013-10-07
    • The Boeing Company
    • Karl E. NelsonGary E. GeorgesonPaul S. RutherfordMark McKenna
    • G01N29/04
    • G01N29/043G01L5/246G01N29/041G01N2291/0422G01N2291/0428G01N2291/044G01N2291/2691
    • Embodiments of techniques and technologies to verify the interference fit of fasteners are disclosed. In one embodiment, a transducer is positioned to transmit a shear ultrasonic signal through a region of a fastener which is subject to stress when the fastener experiences an interference fit. The shear ultrasonic signal is transmitted through a region of the fastener subject to the stress. As the transmitted ultrasonic signal encounters the region, it is mode converted corresponding to a degree of interference which the fastener is experiencing. A return ultrasonic signal from the fastener is received with the transducer. From the return ultrasonic signal, a processor determines the degree of interference fit which the fastener is experience and outputs an indication of the same.
    • 公开了用于验证紧固件的过盈配合的技术和技术的实施例。 在一个实施例中,换能器被定位成通过紧固件的区域传递剪切超声波信号,紧固件的区域在紧固件经受过盈配合时经受应力。 剪切超声信号通过紧固件受到应力的区域传递。 当发射的超声波信号遇到该区域时,它被对应于紧固件正在经历的干涉程度而进行模式转换。 用换能器接收来自紧固件的返回超声波信号。 从返回的超声波信号中,处理器确定紧固件经历的过盈配合程度,并输出相同的指示。