GB1271824A - Method for ultrasonic inspection of hot steel plates - Google Patents

Method for ultrasonic inspection of hot steel plates

Info

Publication number
GB1271824A
GB1271824A GB47929/69A GB4792969A GB1271824A GB 1271824 A GB1271824 A GB 1271824A GB 47929/69 A GB47929/69 A GB 47929/69A GB 4792969 A GB4792969 A GB 4792969A GB 1271824 A GB1271824 A GB 1271824A
Authority
GB
United Kingdom
Prior art keywords
roller
plate
steel
transducer
pedestal
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
GB47929/69A
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.)
ELECTRONICS RES CO Ltd
Original Assignee
ELECTRONICS RES 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 ELECTRONICS RES CO Ltd filed Critical ELECTRONICS RES CO Ltd
Publication of GB1271824A publication Critical patent/GB1271824A/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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • 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
    • G01N2291/023—Solids
    • G01N2291/0234—Metals, e.g. steel
    • 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
    • G01N2291/02881—Temperature

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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

1,271,824. Ultrasonic inspection devices; acoustic couplings. ELECTRONICS RESEARCH CO. Ltd. 30 Sept., 1969 [1 Oct., 1968], No. 47929/69. Headings H4D and H4J. Efficient acoustic coupling between a transducer and a hot steel plate being inspected ultrasonically for flaws is achieved by the use of a steel coupling member in contact with the plate surface. In the embodiment shown for a pulse-echo inspection of a steel plate 1 transported by table rollers 3 and backing roller 11, one or more transmitting and/or receiving transducers is(are) disposed in a hollow steel roller 7 and is(are) supported on a pedestal from the fixed axis of roller 7. The pedestal acts both as an acoustic delay member and as a lens for focusing the transducer beam on the plate surface. Roller 7 is forced against plate 1 by hydraulic or air jacks 5. Oil acting as both coolant and couplant (between the pedestal and roller) is passed through roller 7. To reduce disturbing noises due to heat shock as roller 7 contacts plate 1, roller 7 may be pre-heated to the plate temperature. Graphs demonstrating the feasibility of using a steel coupling and showing ultrasonic attenuation (derived using an oscilloscope and calibrated attenuator) for various contact pressures between a transducer probe and hot steel test-piece are given. In a modification for inspection by a throughtransmission method using pulsed or continuous wave ultrasonic energy, a second hollow roller containing a transducer is disposed contacting the lower surface of plate 1.
GB47929/69A 1968-10-01 1969-09-30 Method for ultrasonic inspection of hot steel plates Expired GB1271824A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43070789A JPS4949519B1 (en) 1968-10-01 1968-10-01

Publications (1)

Publication Number Publication Date
GB1271824A true GB1271824A (en) 1972-04-26

Family

ID=13441632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47929/69A Expired GB1271824A (en) 1968-10-01 1969-09-30 Method for ultrasonic inspection of hot steel plates

Country Status (4)

Country Link
US (1) US3625051A (en)
JP (1) JPS4949519B1 (en)
DE (1) DE1949586C3 (en)
GB (1) GB1271824A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147065B1 (en) * 1970-12-30 1976-12-13
GB1419118A (en) * 1972-08-18 1975-12-24 British Steel Corp Ultrasonic testing
GB1585648A (en) * 1976-12-28 1981-03-11 Sumitomo Electric Industries Apparatus for detecting flaws in castings
US4167880A (en) * 1978-05-22 1979-09-18 The Boeing Company Water coupled ultrasonic through transmission apparatus
US4375167A (en) * 1981-05-18 1983-03-01 Bethlehem Steel Corporation Ultrasonic transducer suspension system for on-line high speed ultrasonic inspection of flat rolled products
US4567770A (en) * 1983-03-21 1986-02-04 Sonic Instruments Inc. Ultrasonic transducer apparatus and method for high temperature measurements
US4558598A (en) * 1984-06-07 1985-12-17 The Boeing Company Ultrasonic linear array water nozzle and method
FR2578060B1 (en) * 1985-02-28 1987-03-20 Inst Francais Du Petrole METHOD FOR IMPROVING THE SOIL COUPLING OF EARTHQUAKE SEISMIC SOURCES
FR2745905B1 (en) * 1996-03-08 1998-04-24 Lorraine Laminage APPARATUS FOR ACOUSTIC DETECTION OF DEFECTS IN A TRAVELING STRIP

Also Published As

Publication number Publication date
US3625051A (en) 1971-12-07
DE1949586A1 (en) 1970-06-11
JPS4949519B1 (en) 1974-12-27
DE1949586C3 (en) 1973-10-31
DE1949586B2 (en) 1973-04-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee