CA1103489A - Digital type ultrasonic holography apparatus - Google Patents

Digital type ultrasonic holography apparatus

Info

Publication number
CA1103489A
CA1103489A CA306,033A CA306033A CA1103489A CA 1103489 A CA1103489 A CA 1103489A CA 306033 A CA306033 A CA 306033A CA 1103489 A CA1103489 A CA 1103489A
Authority
CA
Canada
Prior art keywords
pulse
signal
ultrasonic
clock pulse
transducer
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.)
Expired
Application number
CA306,033A
Other languages
English (en)
French (fr)
Inventor
Fuminobu Takahashi
Takahiro Kanamori
Kazumichi Suzuki
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 Ltd
Original Assignee
Hitachi 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
Priority claimed from JP52073206A external-priority patent/JPS6049313B2/ja
Priority claimed from JP11561977A external-priority patent/JPS5953555B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of CA1103489A publication Critical patent/CA1103489A/en
Expired 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
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0654—Imaging
    • G01N29/0663—Imaging by acoustic holography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10—Amplitude; Power
    • G01H3/12—Amplitude; Power by electric means
    • G01H3/125—Amplitude; Power by electric means for representing acoustic field distribution

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
CA306,033A 1977-06-22 1978-06-22 Digital type ultrasonic holography apparatus Expired CA1103489A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP73206/1977 1977-06-22
JP52073206A JPS6049313B2 (ja) 1977-06-22 1977-06-22 デジタル方式超音波ホログラフィ装置
JP11561977A JPS5953555B2 (ja) 1977-09-28 1977-09-28 デジタル方式超音波ホログラフイ装置
JP115619/1977 1977-09-28

Publications (1)

Publication Number Publication Date
CA1103489A true CA1103489A (en) 1981-06-23

Family

ID=26414360

Family Applications (1)

Application Number Title Priority Date Filing Date
CA306,033A Expired CA1103489A (en) 1977-06-22 1978-06-22 Digital type ultrasonic holography apparatus

Country Status (5)

Country Link
US (1) US4222273A (enExample)
CA (1) CA1103489A (enExample)
DE (1) DE2827489C2 (enExample)
FR (1) FR2425099A1 (enExample)
GB (1) GB2000291B (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120071A (en) * 1979-03-12 1980-09-16 Hitachi Ltd Ultrasonic holography apparatus
FR2465233B1 (fr) * 1979-09-10 1985-11-08 Plessey Overseas Appareil de determination de gisement a radar ultrasonore
JPS56102883A (en) * 1980-01-21 1981-08-17 Hitachi Ltd Ultrasonic holography apparatus
JPS5714725A (en) * 1980-07-02 1982-01-26 Hitachi Ltd Digital phase detector
US4476434A (en) * 1982-01-25 1984-10-09 The United States Of America As Represented By The United States Department Of Energy Non-destructive testing method and apparatus utilizing phase multiplication holography
US4531410A (en) * 1982-05-10 1985-07-30 Crostack Horst Artur Method of and apparatus for detecting flaws inside articles, more particularly structural components, by means of acoustic holography
DE3217530A1 (de) * 1982-05-10 1984-02-23 Gewertec Gmbh Verfahren und vorrichtung zum erfassen von fehlern im inneren von koerpern, insbesondere bauteilen, mit hilfe der akustischen holographie
US6702747B2 (en) * 2000-06-08 2004-03-09 Advanced Imaging Technologies, Ii Llc Acoustically generated images having selected components
US8438927B2 (en) * 2003-08-12 2013-05-14 Northwestern University Scanning near field thermoelastic acoustic holography (SNFTAH)
US7448269B2 (en) * 2003-08-12 2008-11-11 Northwestern University Scanning near field ultrasound holography
US7626692B2 (en) * 2006-12-18 2009-12-01 The Boeing Company Automated imaging of part inconsistencies
US10025272B2 (en) 2013-01-25 2018-07-17 General Electric Company Ultrasonic holography imaging system and method
US9639056B2 (en) * 2013-09-17 2017-05-02 General Electric Company Acoustical holography with multi-level square wave excitation signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632183A (en) * 1968-07-15 1972-01-04 Holotron Corp Holographic imaging by simultaneous source and receiver scanning
US3712119A (en) * 1970-01-30 1973-01-23 Automation Ind Inc Material tester
DE2020566C3 (de) * 1970-04-27 1978-10-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Erzeugung hochaufgelöster Sonarbilder
US3678452A (en) * 1970-04-30 1972-07-18 Amoco Prod Co Recording elastic-wave phase holographic data
US4021771A (en) * 1975-07-07 1977-05-03 Holosonics, Inc. Scan acoustical holographic imaging apparatus

Also Published As

Publication number Publication date
FR2425099B1 (enExample) 1984-09-21
FR2425099A1 (fr) 1979-11-30
GB2000291B (en) 1982-02-03
DE2827489C2 (de) 1982-07-29
DE2827489A1 (de) 1979-01-04
US4222273A (en) 1980-09-16
GB2000291A (en) 1979-01-04

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Takahashi et al. Digital signal processing in acoustical focused image holography

Legal Events

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