GB828840A - Improvements in ultrasonic testing devices for sheet material - Google Patents

Improvements in ultrasonic testing devices for sheet material

Info

Publication number
GB828840A
GB828840A GB3440856A GB3440856A GB828840A GB 828840 A GB828840 A GB 828840A GB 3440856 A GB3440856 A GB 3440856A GB 3440856 A GB3440856 A GB 3440856A GB 828840 A GB828840 A GB 828840A
Authority
GB
United Kingdom
Prior art keywords
sheet
rollers
layer
piezo
sheet material
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
GB3440856A
Inventor
Hans Joachim Martin
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.)
Jenoptik AG
Original Assignee
Carl Zeiss Jena GmbH
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 Carl Zeiss Jena GmbH filed Critical Carl Zeiss Jena GmbH
Priority to GB3440856A priority Critical patent/GB828840A/en
Publication of GB828840A publication Critical patent/GB828840A/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
    • G01N29/24—Probes
    • G01N29/2493—Wheel shaped probes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • 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)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

828,840. Piezo-electric elements. ZEISS JENA C. VEB. Nov. 9, 1956, No. 34408/56. Class 40 (8). [Also in Group XL (c)] A device for testing sheet material, particularly in rolling mills, in which ultrasonic energy from a transducer is measured after passing through the sheet under test comprises cylindrical rollers 2 and 3 of piezo-electric ceramic material, for example a mixture of titanates, so disposed on either side of the sheet 1 (as transmitter and receiver respectively) that they are in contact with and roll on the moving sheet. The interior and exterior surfaces of the cylinders 2 and 3 have a burnt-on silver layer to constitute electrodes and subsequent to radial polarization the rollers are covered with a layer 6 of material having good temperature stability and sound conductivity, such as polyvinyl chloride. The layer 6 provides protection for the surface electrode and also ensures elastic coupling of the sheet surfaces to the transducers. A breadth of 15 to 20 millimetres is suggested for the rollers, a plurality of which may be provided.
GB3440856A 1956-11-09 1956-11-09 Improvements in ultrasonic testing devices for sheet material Expired GB828840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3440856A GB828840A (en) 1956-11-09 1956-11-09 Improvements in ultrasonic testing devices for sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3440856A GB828840A (en) 1956-11-09 1956-11-09 Improvements in ultrasonic testing devices for sheet material

Publications (1)

Publication Number Publication Date
GB828840A true GB828840A (en) 1960-02-24

Family

ID=10365262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3440856A Expired GB828840A (en) 1956-11-09 1956-11-09 Improvements in ultrasonic testing devices for sheet material

Country Status (1)

Country Link
GB (1) GB828840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005932A1 (en) * 1978-05-31 1979-12-12 Balteau Sonatest Limited A detector for and a method of ultrasonic detection of faults in conveyor belts
EP0098115A1 (en) * 1982-06-28 1984-01-11 De La Rue Systems Limited Detecting the condition of a sheet or web

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005932A1 (en) * 1978-05-31 1979-12-12 Balteau Sonatest Limited A detector for and a method of ultrasonic detection of faults in conveyor belts
EP0098115A1 (en) * 1982-06-28 1984-01-11 De La Rue Systems Limited Detecting the condition of a sheet or web
US4519249A (en) * 1982-06-28 1985-05-28 De La Rue Systems Limited Apparatus for detecting the condition of a sheet or web

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