JPS613055A - 表層欠陥の検出方法及びその装置 - Google Patents

表層欠陥の検出方法及びその装置

Info

Publication number
JPS613055A
JPS613055A JP59123844A JP12384484A JPS613055A JP S613055 A JPS613055 A JP S613055A JP 59123844 A JP59123844 A JP 59123844A JP 12384484 A JP12384484 A JP 12384484A JP S613055 A JPS613055 A JP S613055A
Authority
JP
Japan
Prior art keywords
echo
defect
echoes
ultrasonic beam
frequency
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.)
Granted
Application number
JP59123844A
Other languages
English (en)
Japanese (ja)
Other versions
JPH037904B2 (enrdf_load_stackoverflow
Inventor
Yoshiaki Suzuki
嘉昭 鈴木
Yukio Ogura
幸夫 小倉
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP59123844A priority Critical patent/JPS613055A/ja
Publication of JPS613055A publication Critical patent/JPS613055A/ja
Publication of JPH037904B2 publication Critical patent/JPH037904B2/ja
Granted 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
    • G01N29/04—Analysing solids
    • G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
    • 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
    • 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
    • G01N2291/02854—Length, thickness

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)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
JP59123844A 1984-06-18 1984-06-18 表層欠陥の検出方法及びその装置 Granted JPS613055A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59123844A JPS613055A (ja) 1984-06-18 1984-06-18 表層欠陥の検出方法及びその装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59123844A JPS613055A (ja) 1984-06-18 1984-06-18 表層欠陥の検出方法及びその装置

Publications (2)

Publication Number Publication Date
JPS613055A true JPS613055A (ja) 1986-01-09
JPH037904B2 JPH037904B2 (enrdf_load_stackoverflow) 1991-02-04

Family

ID=14870787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59123844A Granted JPS613055A (ja) 1984-06-18 1984-06-18 表層欠陥の検出方法及びその装置

Country Status (1)

Country Link
JP (1) JPS613055A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6367016A (ja) * 1986-09-09 1988-03-25 Nippon Soken Inc タツチパネル
WO2021167778A1 (en) * 2020-02-19 2021-08-26 Becton, Dickinson And Company Interferometric detection of an object on a surface using wavlength modulation and systems for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6367016A (ja) * 1986-09-09 1988-03-25 Nippon Soken Inc タツチパネル
WO2021167778A1 (en) * 2020-02-19 2021-08-26 Becton, Dickinson And Company Interferometric detection of an object on a surface using wavlength modulation and systems for same
US11385163B2 (en) 2020-02-19 2022-07-12 Becton, Dickinson And Company Interferometric detection of an object on a surface using wavelength modulation and systems for same

Also Published As

Publication number Publication date
JPH037904B2 (enrdf_load_stackoverflow) 1991-02-04

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