公开(公告)号：US08371170B2

公开(公告)日：2013-02-12

申请号：US12866974

申请日：2009-02-12

申请人： Arata Masuda

发明人： Arata Masuda

IPC分类号： G01N29/14 ,  G01H1/00

CPC分类号： G01M5/0033 ,  G01M5/0066 ,  G01N29/09 ,  G01N29/42 ,  G01N29/4427 ,  G01N29/4445 ,  G01N29/4454 ,  G01N2291/0258

摘要： In the diagnosis of a structure, at least one electromechanical transducer is fixed to a structure as an object of diagnosis and is driven with an alternating voltage of a constant amplitude, and a current flowing through the at least one electromechanical transducer is measured. Next, high frequency components around a driving frequency of the electromechanical transducer are separated from a signal of the current. Next, modulation information due to a damage is extracted from amplitude and/or phase demodulation of the high frequency components. Then a damage index is evaluated based on the modulation information. Thus, structural health can be diagnosed with use of at least one electromechanical transducer, without baseline data, in one measurement.

摘要翻译： 在结构诊断中，将至少一个机电换能器固定到作为诊断对象的结构，并且用恒定振幅的交流电压驱动，并且测量流过该至少一个机电换能器的电流。 接下来，机电换能器的驱动频率周围的高频分量与电流信号分离。 接下来，从高频分量的幅度和/或相位解调中提取由于损伤引起的调制信息。 然后根据调制信息评估损伤指数。 因此，在一次测量中，可以使用至少一个机电换能器（无基线数据）来诊断结构健康。

公开(公告)号：US20100319452A1

公开(公告)日：2010-12-23

申请号：US12866974

申请日：2009-02-12

申请人： Arata Masuda

发明人： Arata Masuda

IPC分类号： G01N29/12

CPC分类号： G01M5/0033 ,  G01M5/0066 ,  G01N29/09 ,  G01N29/42 ,  G01N29/4427 ,  G01N29/4445 ,  G01N29/4454 ,  G01N2291/0258

摘要： In the diagnosis of a structure, at least one electromechanical transducer is fixed to a structure as an object of diagnosis and is driven with an alternating voltage of a constant amplitude, and a current flowing through the at least one electromechanical transducer is measured. Next, high frequency components around a driving frequency of the electromechanical transducer are separated from a signal of the current. Next, modulation information due to a damage is extracted from amplitude and/or phase demodulation of the high frequency components. Then a damage index is evaluated based on the modulation information. Thus, structural health can be diagnosed with use of at least one electromechanical transducer, without baseline data, in one measurement.

摘要翻译： 在结构诊断中，将至少一个机电换能器固定到作为诊断对象的结构，并且用恒定振幅的交流电压驱动，并且测量流过该至少一个机电换能器的电流。 接下来，机电换能器的驱动频率周围的高频分量与电流信号分离。 接下来，从高频分量的幅度和/或相位解调中提取由于损伤引起的调制信息。 然后根据调制信息评估损伤指数。 因此，在一次测量中，可以使用至少一个机电换能器（无基线数据）来诊断结构健康。