2001
DOI: 10.1016/s0963-8695(00)00060-8
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Optimum excitation signal for long-range inspection of steel wires by longitudinal waves

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Cited by 15 publications
(5 citation statements)
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“…A computer program is used to control the pulse transmitter receiver (ultrasonic card) and record the waveform. e wave emitted by an ultrasonic card is a square wave, and the number of waves and frequencies of the waves can be controlled by program [18]. e system has the advantages of being able to use high voltages (300 V) to send waves with a signal bandwidth of 0.7 MHz-12 MHz, which is suitable for testing with a variety of frequency sensors, and the single sensor system for the high frequency experiment meets the basic requirements of field rock bolt test.…”
Section: Methodsmentioning
confidence: 99%
“…A computer program is used to control the pulse transmitter receiver (ultrasonic card) and record the waveform. e wave emitted by an ultrasonic card is a square wave, and the number of waves and frequencies of the waves can be controlled by program [18]. e system has the advantages of being able to use high voltages (300 V) to send waves with a signal bandwidth of 0.7 MHz-12 MHz, which is suitable for testing with a variety of frequency sensors, and the single sensor system for the high frequency experiment meets the basic requirements of field rock bolt test.…”
Section: Methodsmentioning
confidence: 99%
“…Some of these methods require several detection points, and signal reconstruction in the time domain may be not straightforward. Other approaches use a priori knowledge of the ultrasonic propagation path and the theoretical dispersion curve to compensate for dispersion of a wideband pulse, to identify a particular guided wave mode [16], [17].…”
Section: Introductionmentioning
confidence: 99%
“…Due to environmental and operational conditions and fatigue caused by rotational stresses, multiple defects may develop in the internal structure of multi-wire ropes. One of the promising methods for investigation of non-homogeneities of the internal structure of wire ropes can be application of ultrasonic guided waves (UGW) [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. UGW are suitable for detection of various structural non-homogeneities, because they can propagate long distances and are quite sensitive both to surface and internal defects [ 11 , 12 , 13 ].…”
Section: Introductionmentioning
confidence: 99%