KR960034981A - Ultrasonic thickness measuring sensor - Google Patents

Ultrasonic thickness measuring sensor Download PDF

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Publication number
KR960034981A
KR960034981A KR1019960004880A KR19960004880A KR960034981A KR 960034981 A KR960034981 A KR 960034981A KR 1019960004880 A KR1019960004880 A KR 1019960004880A KR 19960004880 A KR19960004880 A KR 19960004880A KR 960034981 A KR960034981 A KR 960034981A
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KR
South Korea
Prior art keywords
acoustic lens
ultrasonic wave
ultrasonic
delay
height
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KR1019960004880A
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Korean (ko)
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KR0183529B1 (en
Inventor
테루히사 오노
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츠지 요시후미
닛산지도샤 가부시키가이샤
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Publication of KR960034981A publication Critical patent/KR960034981A/en
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Publication of KR0183529B1 publication Critical patent/KR0183529B1/en

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/001Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

본 발명은 초음파에 의해서 피측정물의 두께를 측정하는데 사용하는 초음파 두께측정센서에 관한 것으로서, 본 발명의 초음파 두께측정센서(2)는 초음파 발진소자(12)의 반지름을 S, 음향렌즈(16)의 볼록면의 곡률 반지름을 R, 딜레이재(15)의 선단 반지름을 C, 그 높이를 L, 음향렌즈(16)내의 음속을 V1, 딜레이재(15)내의 음속을 V2라고 할 때, 이들 파라미터간의 관계가 소정의 부등식을 충족하는 범위에 있도록 딜레이재(15)의 높이(L)를 설정하고, 초음파 발진소자(12)로부터 출력되고 음향렌즈(16)에 의해 굴절되어서 딜레이재(15)내를 투과하는 초음파의 초점을 딜레이재(15)의 선단면이나 그것보다도 소정의 거리만큼 외측의 위치에 이어지도록 하고, 두께측정시에 피측정물의 표면에서 반사하여 되돌아오는 반사파가 딜레이재(15)의 옆둘레면에서 반사되는 경로를 갖게 되지 않도록 하여, 지연에코의 발생을 억제하여 두께측정 한계치수를 넓히는 것이다.The ultrasonic thickness measuring sensor (2) of the present invention is characterized in that the radius of the ultrasonic oscillation element (12) is represented by S, the acoustic lens (16) is an ultrasonic thickness measuring sensor, The radius of curvature of the convex surface of the delay member 15 is R, the tip radius of the delay member 15 is C, the height thereof is L, the sound velocity in the acoustic lens 16 is V1 and the sound velocity in the delay member 15 is V2, The height L of the delay material 15 is set so that the relationship between the delay material 15 and the delay material 15 is within a range that satisfies a predetermined inequality and is outputted from the ultrasonic oscillation element 12 and refracted by the acoustic lens 16, The reflected wave reflected by the surface of the object to be measured at the time of measuring the thickness of the ultrasonic wave passes through the delay material 15, Light reflected from the side surface of To prevent a not have to suppress the occurrence of delayed echo will widen the thickness of the measurement limit dimensions.

Description

초음파 두께측정센서Ultrasonic thickness measuring sensor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 청구항 1 발명의 일실시예의 단면도, 제5도는 청구항 2 발명의 일실시예에 사용되는 딜레이재의 사시도, 제7도는 청구항3 발명의 일실시예의 단면도.FIG. 1 is a cross-sectional view of an embodiment of the present invention, FIG. 5 is a perspective view of a delay member used in an embodiment of the present invention, and FIG. 7 is a sectional view of an embodiment of the present invention.

Claims (3)

초음파 발진소자와, 상기 초음파 발진소자로부터 나오는 초음파를 소정의 초점거리위치에 점 형상으로 수속시키는 구면 형상의 음향렌즈와, 상기 음향렌즈의 볼록면과 끼워 맞추는 오목부가 상부 바닥부에 형성되고, 상기 음향렌즈로부터 나오는 초음파를 전파시켜서 선단부로부터 출사시켜 피측정물로부터 반사되어 오는 초음파를 상기 선단면으로부터 입사시켜 상기 음향렌즈로 되돌리기 위한 대체로 역원뿔대 형상의 딜레이재를 구비하여 이루어지는 초음파 두께측정센서에 있어서, 상기 초음파 발진소자의 반지름을 S, 상기 음향렌즈의 볼록면의 굴곡 반지름을 R, 상기 딜레이재의 선단 반지름을 C, 그 높이를 L, 상기 음향렌즈 내의 음속을 V1, 상기 딜레이재 내의 음속을 V2라고 할 때, 이들 파라미터간의 관계가 다음의 부등식을 충족시키는 범위에 있도록 상기 딜레이재의 높이(L)를 설정한 것을 특징으로 하는 초음파 두께측정센서.A spherical acoustic lens for converging the ultrasonic waves emitted from the ultrasonic oscillation element in a point shape at a predetermined focal distance position; and a concave portion fitted to the convex surface of the acoustic lens, And a delay member having a generally inverted truncated cone shape for propagating an ultrasonic wave emitted from an acoustic lens and emitting the ultrasonic wave reflected from the object to be irradiated from the distal end and returning the ultrasonic wave to the acoustic lens, The radius of curvature of the convex surface of the acoustic lens is R, the radius of the tip of the delay member is C, the height thereof is L, the sound velocity in the acoustic lens is V1, the sound velocity in the delay material is V2 , The relationship between these parameters is in the range satisfying the following inequality And a height (L) of the delay material is set so as to satisfy the following expression. (수 1)(Number 1) 초음파 발진소자와. 상기 초음파 발진소자로부터 나오는 초음파를 초점거리위치로 선 형상으로 수속시키는 비 구면 형상의 음향렌즈와, 상기 음향렌즈의 볼록면과 끼워 맞추는 오목면이 상부 바닥부에 형성되고, 상기 음향렌즈로부터 나오는 초음파를 전파시켜 선단면으로부터 출사시키고, 피측정물로부터 반사되어 오는 초음파를 상기 선단면으로부터 입사시켜 상기 음향렌즈로 되돌리기 위한 역뿔대 형상의 딜레이재를 구비하여 이루어지는 초음파 두께측정센서에 있어서, 상기 초음파 발진소자의 짧은 지름을 S, 상기 음향렌즈의 볼록면의 중심위치로 부터 짧은 지름 방향으로 S만큼 떨어진 위치의 기울기 각도를 α, 상기 딜레이재의 선단 짧은 지름을 C, 그 높이를 L, 상기 음향렌즈내의 음속을 V1, 상기 딜레이재내의 음속을 V2라고 할 때, 이들 파라미터간의 관계가 다음의 부등식을 충족하는 범위에 있도록 상기 딜레이재의 높이(L)를 설정한 것을 특징으로 하는 초음파 두께측정센서Ultrasonic oscillation element and. A concave surface to be fitted to the convex surface of the acoustic lens is formed on an upper bottom portion of the acoustic lens, and an ultrasonic wave emitted from the acoustic lens And a reverse delay element for returning the ultrasonic wave reflected from the measured object to the acoustic lens by making the ultrasonic wave incident on the front end face to propagate back to the acoustic lens, the ultrasonic wave thickness measuring sensor comprising: A short diameter of the element is S, a tilt angle of a position spaced by S in a short radial direction from a center position of the convex surface of the acoustic lens is α, a short diameter of a tip of the delay material is C, a height thereof is L, When the sound velocity is V1 and the sound velocity in the delay material is V2, the relationship between these parameters is So that the inequalities in the range that meet the measurement ultrasonic sensor, characterized in that setting the height (L) wherein the delay member (수 2)(Number 2) 초음파 발진소자와, 상기 초음파 발진소자로부터 나오는 초음파를 소정의 초점거리위치에 수속시키는 음향 렌즈와, 옆둘레에 흡음재가 장치되고 상기 음향렌즈의 볼록면과 끼워 맞추는 오목면이 상부 바닥면에 형성되고, 상기 음향렌즈로부터 나오는 초음파를 전파시켜 선단면으로부터 출사시키고, 피측정물로부터 반사되어 오는 초음파를 상기 선단면으로부터 입사시켜서 상기 음향렌즈로 되돌리기 위한 역뿔대 형상의 딜레이재를 구비하여 이루어지는 초음파 두께측정센서,An acoustic lens for converging the ultrasonic wave emitted from the ultrasonic oscillation element to a predetermined focal distance position; a concave surface for fitting a sound absorbing material to the side surface of the acoustic lens and fitting with the convex surface of the acoustic lens is formed on the upper floor surface An ultrasonic wave thickness measurement device comprising a reverse delay element for propagating an ultrasonic wave from the acoustic lens and emitting the ultrasonic wave from a front end face and returning the ultrasonic wave reflected from the measured object to the acoustic lens, sensor, ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960004880A 1995-03-09 1996-02-27 Ultrasonic thickness detector KR0183529B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP95-49517 1995-03-09
JP7049517A JP2778510B2 (en) 1995-03-09 1995-03-09 Ultrasonic thickness measurement sensor

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KR960034981A true KR960034981A (en) 1996-10-24
KR0183529B1 KR0183529B1 (en) 1999-05-15

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KR100807567B1 (en) * 2001-11-20 2008-03-06 주식회사 포스코 Mould leveling device for measuring mould powder layer and thereof measuring method
JP2005061944A (en) * 2003-08-11 2005-03-10 Nissan Motor Co Ltd Apparatus and method for measuring internal pressure of pipe
CN102109333B (en) * 2009-12-23 2013-03-20 中国科学院沈阳计算技术研究所有限公司 Small-curvature radius complex curved surface intelligent ultrasonic thickness measurement system
JP6179343B2 (en) * 2013-10-23 2017-08-16 富士電機株式会社 Ultrasonic probe

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* Cited by examiner, † Cited by third party
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JP2805086B2 (en) * 1989-06-20 1998-09-30 グンゼ株式会社 Filler for living tissue
JPH0547807U (en) * 1991-12-02 1993-06-25 大阪瓦斯株式会社 Ultrasonic probe

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JP2778510B2 (en) 1998-07-23
JPH08247751A (en) 1996-09-27
KR0183529B1 (en) 1999-05-15

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