GB2011219A - Ultrasonic probes - Google Patents

Ultrasonic probes

Info

Publication number
GB2011219A
GB2011219A GB7848217A GB7848217A GB2011219A GB 2011219 A GB2011219 A GB 2011219A GB 7848217 A GB7848217 A GB 7848217A GB 7848217 A GB7848217 A GB 7848217A GB 2011219 A GB2011219 A GB 2011219A
Authority
GB
United Kingdom
Prior art keywords
output face
corrugations
stand
ultrasonic probes
ultrasound
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Withdrawn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
GB7848217A
Inventor
Dominic Breen Kevin
Lionel Delaney John
Macdonald Green Ian
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.)
EMI Ltd
Original Assignee
EMI 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 EMI Ltd filed Critical EMI Ltd
Priority to GB7848217A priority Critical patent/GB2011219A/en
Publication of GB2011219A publication Critical patent/GB2011219A/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Withdrawn legal-status Critical Current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
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • 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
    • G01N29/24—Probes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02836—Flow rate, liquid level

Abstract

In a stand off cell (1) for ultrasonic transducers it is desirable to reduce signals reflected at the output face (5) which may propagate back to the transducer (2). In this arrangement the output face of a solid stand off is formed with corrugations (6) such that the reflected wave has superimposed on it variations which cause destructive interference. The corrugations preferably take the form of rectangular grooves of equal area spaced by a quarter wavelength of the ultrasound. <IMAGE>
GB7848217A 1977-12-21 1978-12-13 Ultrasonic probes Withdrawn GB2011219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7848217A GB2011219A (en) 1977-12-21 1978-12-13 Ultrasonic probes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5311077 1977-12-21
GB7848217A GB2011219A (en) 1977-12-21 1978-12-13 Ultrasonic probes

Publications (1)

Publication Number Publication Date
GB2011219A true GB2011219A (en) 1979-07-04

Family

ID=26267189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7848217A Withdrawn GB2011219A (en) 1977-12-21 1978-12-13 Ultrasonic probes

Country Status (1)

Country Link
GB (1) GB2011219A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387720A (en) * 1980-12-29 1983-06-14 Hewlett-Packard Company Transducer acoustic lens
US4552021A (en) * 1982-12-30 1985-11-12 Fujitsu Limited Electro-sound transducer eliminating acoustic multi-reflection, and ultrasonic diagnostic apparatus applying it
WO1986002723A1 (en) * 1984-10-23 1986-05-09 N.V. Nederlandsche Apparatenfabriek Nedap Transducer with reduced acoustic reflection
DE3702179A1 (en) * 1985-07-26 1988-08-11 Bauer Johann Ultrasound-conducting pad and method of measuring pressure-sensitive surfaces
WO1996027120A1 (en) * 1995-03-01 1996-09-06 Unitor Denmark A/S A method and an apparatus for measuring and indicating the fluid level in a container
US5567881A (en) * 1995-05-05 1996-10-22 Mcdonnell Douglas Corporation Method and apparatus for inspecting a structural part having surface irregularities
WO2002045074A1 (en) * 2000-11-30 2002-06-06 Siemens Aktiengesellschaft Ultrasonic transducer and ultrasonic flowmeter
WO2008119752A1 (en) * 2007-03-30 2008-10-09 Ge Inspection Technologies Gmbh Method for the nondestructive testing of a test object by means of ultrasound and corresponding device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387720A (en) * 1980-12-29 1983-06-14 Hewlett-Packard Company Transducer acoustic lens
US4552021A (en) * 1982-12-30 1985-11-12 Fujitsu Limited Electro-sound transducer eliminating acoustic multi-reflection, and ultrasonic diagnostic apparatus applying it
WO1986002723A1 (en) * 1984-10-23 1986-05-09 N.V. Nederlandsche Apparatenfabriek Nedap Transducer with reduced acoustic reflection
DE3702179A1 (en) * 1985-07-26 1988-08-11 Bauer Johann Ultrasound-conducting pad and method of measuring pressure-sensitive surfaces
WO1996027120A1 (en) * 1995-03-01 1996-09-06 Unitor Denmark A/S A method and an apparatus for measuring and indicating the fluid level in a container
US5567881A (en) * 1995-05-05 1996-10-22 Mcdonnell Douglas Corporation Method and apparatus for inspecting a structural part having surface irregularities
WO2002045074A1 (en) * 2000-11-30 2002-06-06 Siemens Aktiengesellschaft Ultrasonic transducer and ultrasonic flowmeter
WO2008119752A1 (en) * 2007-03-30 2008-10-09 Ge Inspection Technologies Gmbh Method for the nondestructive testing of a test object by means of ultrasound and corresponding device

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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)