Download New Technologies in Electromagnetic Non-destructive Testing by Songling Huang, Shen Wang PDF
By Songling Huang, Shen Wang
This ebook introduces novel advancements within the box of electromagnetic non-destructive checking out and evaluate (NDT/E). the themes comprise electromagnetic ultrasonic guided wave trying out, pulsed eddy present checking out, distant box eddy present trying out, low frequency eddy present checking out, steel magnetic reminiscence checking out, and magnetic flux leakage trying out. contemplating the expanding predicament concerning the safeguard upkeep of serious constructions in a variety of industries and lifestyle, those subject matters offered the following might be of specific curiosity to the readers within the NDT/E box. This e-book covers either theoretical researches and the engineering purposes of the electromagnetic NDT know-how. it might function a helpful reference for college kids and correct NDT technicians. it's also an invaluable fabric for qualification education and better studying for nondestructive trying out professionals.
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Extra resources for New Technologies in Electromagnetic Non-destructive Testing
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29 The installation and fixation of the nickel strap 28 1 The Electromagnetic Ultrasonic Guided Wave Testing Fig. 30 The experimental setup for the verification of the torsional mode guided wave Fig. 31 The torsional mode guided wave signal The setup of the transmitting EMAT and receiving EMAT for the verification of the torsional mode guided wave is shown in Fig. 30. 0 m. 5 mm. 5 m. 4 mm. It is assumed that the amplitude of excitation voltage of the transmitting EMAT is 50 V, the excitation frequency is 100 kHz, and the number of cycles is 6.
The functions that can be achieved using this software are as follows: the automatic importing of the test data into the database, displaying the image (C-S scan) of the planar scanning of the pipeline conditions and the ultrasonic waveform plot of the crack defect, identifying the pipe welds automatically, and quantifying and locating the crack defect, etc. 5 The Electromagnetic Ultrasonic Guided Wave Testing Technique 39 Fig. 43 Result comparison of magnetic particle inspection and electromagnetic ultrasonic testing of cracks in the pipeline the test data, the switch display between the spatial domain and time domain can be conducted conveniently.
34 A sketch of the artificial defect in the outer wall of the experimental pipeline 32 1 The Electromagnetic Ultrasonic Guided Wave Testing Fig. 35 The experimental setup of the defect detection in the pipe by the L(0,2) guided wave mode with a diameter of 1 mm into eight clusters, each cluster having two layers and each layer having 3 turns of wire. 8 mm. 4 m. 31 mm into eight clusters, each cluster having two layers and each layer having 10 turns of wire. 8 mm. 75 m. The amplitude of the excitation voltage of the transmitting EMAT is set at 350 V, the excitation frequency is 250 kHz, the number of cycles is 12, and the magnetizing current of the electromagnet is 15 A.