GB1522306A - Nondestructive testing of materials - Google Patents

Nondestructive testing of materials

Info

Publication number
GB1522306A
GB1522306A GB4428774A GB4428774A GB1522306A GB 1522306 A GB1522306 A GB 1522306A GB 4428774 A GB4428774 A GB 4428774A GB 4428774 A GB4428774 A GB 4428774A GB 1522306 A GB1522306 A GB 1522306A
Authority
GB
United Kingdom
Prior art keywords
flaw
workpiece
scans
flaws
produce
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
GB4428774A
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.)
Steel Castings Research and Trade Association
Original Assignee
Steel Castings Research and Trade Association
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 Steel Castings Research and Trade Association filed Critical Steel Castings Research and Trade Association
Priority to GB4428774A priority Critical patent/GB1522306A/en
Publication of GB1522306A publication Critical patent/GB1522306A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52053—Display arrangements
    • G01S7/52057—Cathode ray tube displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y15/00—Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
    • 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
    • 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
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/38—Detecting the response signal, e.g. electronic circuits specially adapted therefor by time filtering, e.g. using time gates

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Nanotechnology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Molecular Biology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)

Abstract

1522306 Ultrasonic flaw testing STEEL CASTINGS RESEARCH & TRADE ASSOCIATION 12 April 1976 [12 Jan 1975] 44287/74 Heading GIG A workpiece is non-destructively tested for flaws by scanning its surface with an ultrasonic probe to produce an initial C-scan of bottom surface echoes (which are attenuated on passage through a flaw), detecting those flaws above a certain severity, and then making repeated scans of any area of the workpiece in which a flaw was detected to produce a succession of C-scans each showing the extent of the flaw at a particular depth below the surface of the workpiece, and recording the C-scans on an X-Y plotter. The severity discriminator has an adjustable acceptance window (VR1, VR2) Fig. 2 (not shown), different severities ot flaw being plotted in different colours of ink. An A-scan oscilloscope is provided for checking the peak level of the back surface echoes and for determining the depth of the flaws. L.E.D's indicate whether or not the discriminator threshold is exceeded. Sine-cosine potentiometers at the pivots of the linkages supporting the probe control the pen position of the recorder.
GB4428774A 1976-04-12 1976-04-12 Nondestructive testing of materials Expired GB1522306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4428774A GB1522306A (en) 1976-04-12 1976-04-12 Nondestructive testing of materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4428774A GB1522306A (en) 1976-04-12 1976-04-12 Nondestructive testing of materials

Publications (1)

Publication Number Publication Date
GB1522306A true GB1522306A (en) 1978-08-23

Family

ID=10432599

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4428774A Expired GB1522306A (en) 1976-04-12 1976-04-12 Nondestructive testing of materials

Country Status (1)

Country Link
GB (1) GB1522306A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512206A1 (en) * 1981-09-02 1983-03-04 Mannesmann Ag METHOD AND DEVICE FOR DETECTION OF HYDROGEN-INDUCED CRIQUES IN METALLIC MATERIALS
CN112816556A (en) * 2019-11-18 2021-05-18 中国商用飞机有限责任公司 Defect detection method, device, equipment and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512206A1 (en) * 1981-09-02 1983-03-04 Mannesmann Ag METHOD AND DEVICE FOR DETECTION OF HYDROGEN-INDUCED CRIQUES IN METALLIC MATERIALS
CN112816556A (en) * 2019-11-18 2021-05-18 中国商用飞机有限责任公司 Defect detection method, device, equipment and storage medium

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee