A Quickly Replaceable Combined Magnetostrictive Guided Wave Phased Array Transducer
A magnetostrictive and phased array technology, applied to instruments, scientific instruments, and the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., can solve problems such as inconvenient installation and use, invalid excitation areas, etc., to improve applicability, practicality, and flexibility The effect of adjusting and increasing the flexibility of installation
Active Publication Date: 2021-11-19
ZHEJIANG UNIV
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Problems solved by technology
[0004] The embodiment of the present invention provides a rapidly replaceable combined magnetostrictive guided wave phased array transducer, the purpose of which is to solve the inconvenient and ineffective installation and use of current phased array transducers in the detection of pipelines with different diameters. The problem with the incentive zone
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Embodiment 2
[0072] figure 2 As shown, when the phased array transducer of the present invention detects the metal plate 6, first fold up the two sides of the adjacent acoustic wave induction unit 5, and then fix them to the pre-tightened fixing belt 4 in turn, and use the probe clip 2 to align the two sides. The folded and pasted area adjacent to the acoustic wave induction unit 5 is fixed, and finally the combined phased array transducer is laid on the surface of the metal plate as a whole. Since there is no need to carry out circumferential pretension in the flat plate detection, the quick pretension device 3 at one end of the pretension fixing belt 4 can be removed. By increasing or decreasing the number of acoustic wave sensing units 5 and properly adjusting the size of the folded areas on both sides, the detection of metal plates with different widths can be adapted.
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The invention discloses a rapidly replaceable combined magnetostrictive guided wave phased array transducer. The inner surface of the magnetostrictive belt is pasted on the surface of the object to be inspected through a coupling agent; multiple acoustic wave induction units are closely attached to the outer surface of the magnetostrictive belt; the circumferential pretensioning mechanism is located on the edge of the acoustic wave induction unit to connect the acoustic wave induction unit and The magnetostrictive bands are pressed together on the surface of the object to be inspected; the probe clamp clamps the folded outward ends of every two adjacent acoustic wave induction units, so that each acoustic wave induction unit is combined into a phased array transducer. The device of the invention not only easily ensures the consistency of the probe, is easy to replace and maintain, but also can be flexibly applied to the detection of metal pressure pipes and metal plates with different diameters, greatly improving the applicability and practicability of the device.
Description
technical field [0001] The invention relates to a magnetostrictive transducer in the technical field of ultrasonic guided wave nondestructive testing, in particular to a rapidly replaceable combined magnetostrictive guided wave phased array transducer. Background technique [0002] In recent years, resource development and energy demand in various places have surged, which has promoted a new wave of pipeline construction, and also made pipeline transportation an important task in resource allocation. However, with the increasing scale of pipeline laying, pipeline accidents caused by corrosion, aging and other reasons also occur frequently. [0003] Ultrasonic guided wave non-destructive testing technology is widely used in pipeline testing due to its advantages of long detection distance, high efficiency and low cost. Traditional single-channel transducers cannot locate defects in the circumferential direction, but can only excite guided waves of specific modes. They have p...
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IPC IPC(8): G01N29/04G01N29/22G01N29/24G01N29/26
CPCG01N29/04G01N29/223G01N29/2412G01N29/262G01N2291/0289G01N2291/044G01N2291/106
Inventor 唐志峰陈会明郑文轩张鹏飞吕福在
Owner ZHEJIANG UNIV
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