US Patent: 5652387 - Device for non-destructive ultrasonic testing of a cylindrical wall accessible through a narrow annular passage

US 5652387Device for non-destructive ultrasonic testing of a cylindrical wall accessible through a narrow annular passageFRAMATOME inventor(s): DUMONT Pascal; DELTOUR Damien; filed 19960228, Serial No. 549714, issued 19970729
1. Device for non-destructive ultrasonic testing of a cylindrical wall accessible through an annular passage, of narrow width in the radial direction of the cylindrical wall, including a blade whose thickness is less than the width of the annular passage in the radial direction, carrying at least one testing probe in the vicinity of one of its ends, wherein the probe includes a first ultrasonic transducer constituting an emitter and a second ultrasonic transducer constituting a receiver, which are pivotably mounted at the end of the blade about two axes parallel to the longitudinal direction of the blade, arranged separated from one another in the transverse direction of the blade, so as to be placed in the annular passage in two positions separated from one another in a circumferential direction of the annular passage.

Abstract: The device includes a blade (1), one end of which carries a testing probe (2). The probe (2) includes a first ultrasonic transducer (23) constituting an emitter and a second ultrasonic transducer (24) constituting a receiver, which are pivotably mounted at the end of the blade (1) about two axes parallel to the longitudinal direction of the blade (1), arranged separated from one another in the transverse direction of the blade (1), so as to be placed in a narrow annular passage, in contact with a cylindrical wall to be tested, in two positions separated from one another in a circumferential direction of the annular passage.

U.S. Class: (73/622) (376/249) (73/624)

IPC: (G01N 29/10) (G01N 29/24)

US Patents Cited: 4330865 4368642 4472346 4569230 5156803 5327079 5436944

PCT Number: PCT/FR95/00180
PCT Pub.Date: 19950921
PCT Pub.No: WO95/25278
PCT Filing Date: 19950215
PCT 371 Date: 19960228
PCT 102(e)Date: 19960228

Priority: (FRX 19940317 94 03154)

OG Section: Electrical

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