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Ultrasonic sensor for guided wave testing

A guided wave testing, ultrasonic technology, used in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, testing of metals, etc.

Pending Publication Date: 2021-11-16
GUIDED ULTRASONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sensor is glued to the pipe with an epoxy adhesive, although the steel strap helps to secure the sensor

Method used

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  • Ultrasonic sensor for guided wave testing
  • Ultrasonic sensor for guided wave testing
  • Ultrasonic sensor for guided wave testing

Examples

Experimental program
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Embodiment Construction

[0038] refer to Figure 1 to Figure 3 , shows an ultrasonic sensor strip 1 for guided wave inspection of structures such as pipes. As will be explained in more detail below, two or more ultrasonic sensor strips 1 may be joined together to form a transducer array ring 31 ( Figure 11 ) for inspection of larger structures, such as large diameter pipes. The sensor strip 1 and the transducer ring can be fixed to a structure made of ferromagnetic material such as steel without the use of adhesives or tension bands.

[0039] Specific reference image 3 , an ultrasonic sensor strip 1 comprising a flexible circuit board 2 in the form of a strip extending along a longitudinal axis between a first end 3 and a second end 4 and having first opposing sides 5 and second Opposite side 6. The flexible circuit board 2 includes a substrate 7 formed of a dielectric material, such as polyimide or another suitable plastic material, having a surface 8 supporting conductive tracks 9 (referred to...

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PUM

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Abstract

An ultrasonic sensor for guided wave testing is disclosed. The sensor comprises a flexible circuit board (2), an array of piezoelectric elements (10) on the flexible circuit board and an array of permanent magnets (16). Each piezoelectric element is interposed between a respective permanent magnet and the flexible circuit board.

Description

technical field [0001] The present invention relates to an ultrasonic sensor for guided wave testing of structures such as pipes. Background technique [0002] Ultrasonic Guided Waves Ltd (London, UK) currently sells a permanently installed monitoring system (gPIMS) sensor. The sensor has two rows of piezo elements mounted on a flexible circuit board and two looped steel straps that help hold the sensor in place and provide an electrical ground connection to the electrodes on the back of the piezo elements . The sensor is still glued to the pipe with an epoxy adhesive, although the steel strap helps secure the sensor. [0003] After the sensor wiring is complete, the assembly is overmolded with polyurethane elastomer to provide mechanical and environmental protection, as well as dampen unwanted vibrations that can introduce noise into the received signal. To mount the circuit to the pipe, apply adhesive to the inside surface of the sensor, then use two spring-loaded bolts...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/22G01N29/24
CPCG01N29/043G01N29/223G01N29/245G01N2291/0234G01N2291/106G01N2291/2634G01N2291/0422G01N2291/044G01N33/204G01N29/04
Inventor 尼克·肯普基思·维恩
Owner GUIDED ULTRASONICS LTD