KR19990048190A - 고체재료의 두께 및 초음파 속도를 동시에 측정하는 장치 및 방법 - Google Patents
고체재료의 두께 및 초음파 속도를 동시에 측정하는 장치 및 방법 Download PDFInfo
- Publication number
- KR19990048190A KR19990048190A KR1019970066809A KR19970066809A KR19990048190A KR 19990048190 A KR19990048190 A KR 19990048190A KR 1019970066809 A KR1019970066809 A KR 1019970066809A KR 19970066809 A KR19970066809 A KR 19970066809A KR 19990048190 A KR19990048190 A KR 19990048190A
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- South Korea
- Prior art keywords
- ultrasonic
- thickness
- measured
- ultrasonic wave
- receiving
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011343 solid material Substances 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000644 propagated effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 12
- 238000012937 correction Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 6
- 230000001066 destructive effect Effects 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009683 ultrasonic thickness measurement Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
-
- 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
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
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- 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
- G01N29/04—Analysing solids
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
Claims (4)
- 초음파 송신자(2)로 부터 피측정 대상물(1) 내부에 입사되어 일정한 속도를 갖고 진행하여 복수개의 수신자에 도달된 초음파를 수신하여 각각의 진행 시간을 결정하고, 초음파의 송신지점을 기준점으로 하여 초음파가 수신되는 복수개의 수신 지점과의 거리를 산출하므로써 초음파의 속도와 피측정 대상물의 두께를 연산하는 연산제어장치, 및 상기 연산제어장치에 의해 연산된 정보를 외부에 출력하는 출력장치를 포함하는 것을 특징으로 하는 고체재료의 두께 및 초음파 속도 동시 측정장치.
- 제1항에 있어서, 상기 송신자(2)로 부터 재질내를 진행하여 온 초음파를 수신하는 상기 수신자(3, 4)가 피측정 대상물(1)의 수신측 표면에 최소한 2개 이상의 배열 형 다(多) 수신자로 구성되는 것을 특징으로 하는 고체재료의 두께 및 초음파 속도 동시 측정장치.
- 제1항에 있어서, 측정대상 고체재료의 조건에 따라 송신과 수신을 자유로히 할 수 있도록 상기 수신자가 이송장치에 의해 거리 이동이 가능하도록 설치되는 것을 특징으로 하는 고체재료의 두께 및 초음파 속도 동시 측정장치.
- 초음파 송신자(2)에 의해 발생한 초음파를 피측정 대상물(1)에 입사하는 초음파 송신단계와, 상기 송신자(2)에서 가장 가까운 거리에 위치하고 있는 제1 수신자(3)가 피측정 대상물(1)로 부터의 초음파 반사펄스를 수신하는 제1수신단계와, 상기 송신자(2)에서 가장 먼 거리에 위치하고 있는 제2 수신자(4)가 피측정 대상물(1)로 부터의 초음파 반사펄스를 수신하는 제2수신단계와, 초음파가 송신지점을 출발하여 수신지점에 도달하는데 걸리는 시긴을 결정하는 초음파 진행시간(T1, T2) 결정단계와, 상기 송신자(2)로 부터 상기 제1 및 제2 수신자(3 및 4)에 이르는 직선거리(L1, L2)를 대응하는 초음파 진행시간(T1, T2)에 대해 선형최소 자승법으로 피팅(fitting)하므로써 초음파의 속도(V)를 연산하는 제1 연산단계와, 상기 제1 연산단계에서 연산된 초음파 속도(V)로 부터 피측정 대상물(1)의 두께(d)를 연산하는 제2 연산단계, 및 상기 제1 및 제2 연산단계에서 연산된 정보를 외부에 출력하는 출력단계를 포함하는 것을 특징으로 하는 고체재료의 두께 및 초음파 속도 동시 측정방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970066809A KR100258747B1 (ko) | 1997-12-08 | 1997-12-08 | 고체재료의 두께 및 초음파 속도를 동시에 측정하는 장치 및 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970066809A KR100258747B1 (ko) | 1997-12-08 | 1997-12-08 | 고체재료의 두께 및 초음파 속도를 동시에 측정하는 장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
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KR19990048190A true KR19990048190A (ko) | 1999-07-05 |
KR100258747B1 KR100258747B1 (ko) | 2000-08-01 |
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KR1019970066809A KR100258747B1 (ko) | 1997-12-08 | 1997-12-08 | 고체재료의 두께 및 초음파 속도를 동시에 측정하는 장치 및 방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100769627B1 (ko) * | 2006-04-19 | 2007-10-25 | 미승씨엔에스검사주식회사 | 비파괴 검사장치 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100807567B1 (ko) * | 2001-11-20 | 2008-03-06 | 주식회사 포스코 | 몰드 파우더층 측정용 몰드레벨계 및 그 레벨 측정방법 |
KR100817617B1 (ko) * | 2006-08-17 | 2008-03-31 | 한국원자력연구원 | 구조물의 두께와 물성치 검사장치, 검사방법 및 두께감소감시방법 |
KR101368196B1 (ko) | 2013-12-02 | 2014-02-28 | 한국지질자원연구원 | 음파전달속도 측정시스템 및 이를 이용한 음파전달속도 측정방법 |
KR200489739Y1 (ko) | 2018-03-16 | 2019-07-30 | 두산중공업 주식회사 | 비파괴 검사 장치 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH068729B2 (ja) * | 1987-10-06 | 1994-02-02 | 日立建機株式会社 | コンクリート板等の厚さ測定方法 |
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- 1997-12-08 KR KR1019970066809A patent/KR100258747B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100769627B1 (ko) * | 2006-04-19 | 2007-10-25 | 미승씨엔에스검사주식회사 | 비파괴 검사장치 |
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KR100258747B1 (ko) | 2000-08-01 |
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