Measuring and testing – Vibration – By mechanical waves
Patent
1993-05-12
1995-07-18
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73624, 73629, G01N 2928
Patent
active
054331137
ABSTRACT:
A method for detecting defects with a surface ultrasonic wave in which a surface ultrasonic wave probe is brought into contact with a surface of a rotating cylindrical member via a thin film of a contact liquid medium such that a contact trace of the probe extends linearly or helically about the circumference of the cylindrical member. An ultrasonic wave propagates in the surface portion of the cylindrical member from the probe in an opposite direction to the rotational direction of the cylindrical member. The probe is provided in a front portion thereof with a projection slightly extending downward from a lower surface of the probe so that the thin film of the contact liquid medium is stably formed. There is substantially no thin film of the contact liquid medium on the surface portion of the cylindrical member in which the surface ultrasonic wave propagates.
REFERENCES:
patent: 3228232 (1966-01-01), Proctor
patent: 3255626 (1966-06-01), Van der Veer
patent: 4472975 (1984-09-01), Beck et al.
patent: 4559825 (1985-12-01), Martens
patent: 4562737 (1986-01-01), Davies
patent: 4879088 (1989-11-01), von Swam et al.
patent: 5123281 (1992-06-01), Cox et al.
patent: 5228343 (1993-07-01), Schoenen et al.
Sorano H., et al., Hitachi Kinzoku Giho, vol. 8, pp. 52, 55, 56 (1992) "Quality Control for Newly Developed Composite Type Rolls".
Thesis No. 335, CAMP-ISIJ vol. 5 (1992), The 123rd Spring Conference of the Iron and Steel Institute of Japan, p. 515, Lines 19-26, published Mar. 3, 1992 "Surface Crack Detector for Rolling . . . ".
"Specification of Automatic System for Detecting Defects of Rolls" published by Krautkramer Japan Co., Ltd., Feb. 10, 1993 (p. 3, line 9 to p. 4, line 26).
Andoh Yoshimitsu
Sano Yoshikazu
Sorano Hiroaki
Hitachi Metals Ltd.
Kwok Helen C.
Williams Hezron E.
LandOfFree
Probe and apparatus for detecting defects of cylindrical member does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Probe and apparatus for detecting defects of cylindrical member , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probe and apparatus for detecting defects of cylindrical member will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2415261