Walking-gate ultrasonic flaw detector

Details Walking-gate ultrasonic flaw detector Walking-gate ultrasonic flaw detector

1980-04-11

1981-10-06

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73620, G01N 2904

Patent

active

042928486

ABSTRACT:
A microprocessor-based ultrasonic inspection system reliably detects fatigue cracks smaller than 0.030 inch under installed fasteners by means of a unique signal-processing method. The signal-processing used in this invention takes advantage of the fact that crack signals "walk" in time as a transducer moves around a fastener. Bolt size, scan depth, and angle of incidence of an ultrasonic shear wave are used to determine the "walk rate" of a defect in the inspection zone. With this geometric information, the signal-processing technique will enhance any pulse-echo return "walking" at the computed walk rate, and thus significantly improve the ratio of crack signal to other signal sources in the material.

REFERENCES:
patent: 3977236 (1976-08-01), Raatz et al.

Affiliated with

Also associated with

Rating

Walking-gate ultrasonic flaw detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Walking-gate ultrasonic flaw detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Walking-gate ultrasonic flaw detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1201294