GB2013344A - Ultrasonic flaw detection - Google Patents

Ultrasonic flaw detection

Info

Publication number
GB2013344A
GB2013344A GB7903085A GB7903085A GB2013344A GB 2013344 A GB2013344 A GB 2013344A GB 7903085 A GB7903085 A GB 7903085A GB 7903085 A GB7903085 A GB 7903085A GB 2013344 A GB2013344 A GB 2013344A
Authority
GB
United Kingdom
Prior art keywords
test
spectrum
contact pads
transmitter
materials
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB7903085A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balteau Sonatest Ltd
Original Assignee
Balteau Sonatest Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balteau Sonatest Ltd filed Critical Balteau Sonatest Ltd
Priority to GB7903085A priority Critical patent/GB2013344A/en
Publication of GB2013344A publication Critical patent/GB2013344A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

In a dry-coupling transmission system transmitter and receiver probes (10, 12) carry contact pads (18) of a material soft enough to give good acoustic coupling to the material under test but which undergoes substantially no compressive distortion under load (polyvinyl chloride, for example). The contact pads may be rollers. The transmitter probe (10) comprises an undamped crystal which is driven to produce a spectrum of frequencies and a resonant frequency from this spectrum is selectively amplified using a discriminator (20) to determine defects in the test object (16). Changes in the amplitude and displacement of the received signal are used to indicate flaws. The beam from the transmitter probe has a uniform cross-section for the whole of its path through the test object. Thus, one can test laminated joints, bonded materials, brazed joints, rubber composite materials and friction materials. <IMAGE>
GB7903085A 1977-10-28 1979-01-29 Ultrasonic flaw detection Withdrawn GB2013344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7903085A GB2013344A (en) 1977-10-28 1979-01-29 Ultrasonic flaw detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4490777 1977-10-28
GB7903085A GB2013344A (en) 1977-10-28 1979-01-29 Ultrasonic flaw detection

Publications (1)

Publication Number Publication Date
GB2013344A true GB2013344A (en) 1979-08-08

Family

ID=26265479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7903085A Withdrawn GB2013344A (en) 1977-10-28 1979-01-29 Ultrasonic flaw detection

Country Status (1)

Country Link
GB (1) GB2013344A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU575424B2 (en) * 1981-06-29 1988-07-28 Mount Isa Mines Limited Checking conveyor belt using ultrasound
US5201841A (en) * 1992-02-20 1993-04-13 Motorola, Inc. Thermal delay non-destructive bond integrity inspection
EP2381251A2 (en) 2010-04-20 2011-10-26 Gdf Suez Device for and method of non-destructively detecting thickness anomalies of a tube wall
AU2007203586B2 (en) * 2006-08-28 2012-05-10 Bemo Pty Ltd Conveyor Belt Surveillance
EP3489674A1 (en) * 2017-11-22 2019-05-29 The Boeing Company Ultrasonic inspection of a structure with a ramp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU575424B2 (en) * 1981-06-29 1988-07-28 Mount Isa Mines Limited Checking conveyor belt using ultrasound
US5201841A (en) * 1992-02-20 1993-04-13 Motorola, Inc. Thermal delay non-destructive bond integrity inspection
AU2007203586B2 (en) * 2006-08-28 2012-05-10 Bemo Pty Ltd Conveyor Belt Surveillance
EP2381251A2 (en) 2010-04-20 2011-10-26 Gdf Suez Device for and method of non-destructively detecting thickness anomalies of a tube wall
EP3489674A1 (en) * 2017-11-22 2019-05-29 The Boeing Company Ultrasonic inspection of a structure with a ramp
US10571385B2 (en) 2017-11-22 2020-02-25 The Boeing Company Ultrasonic inspection of a structure with a ramp
EP3961205A1 (en) * 2017-11-22 2022-03-02 The Boeing Company Method for inspecting porosity or foreign debris in a structure

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)