GB899124A - Improvements in and relating to ultrasonic testing - Google Patents
Improvements in and relating to ultrasonic testingInfo
- Publication number
- GB899124A GB899124A GB528058A GB528058A GB899124A GB 899124 A GB899124 A GB 899124A GB 528058 A GB528058 A GB 528058A GB 528058 A GB528058 A GB 528058A GB 899124 A GB899124 A GB 899124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- signal
- probe
- probes
- transducer means
- 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
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
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
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
899,124. Automatic alignment control systems. KELVIN & HUGHES Ltd. Feb. 11, 1959, No. 5280/58. Class 38 (4). [Also in Group XL (c)] An apparatus comprises transducer means for injecting ultrasonic pulses into a body and for receiving the pulses after traversing the body, there being means for deriving a signal indicative of the time difference between the arrival of the received pulses and other pulses which either have traversed a path in the body different from that traversed by the firstmentioned pulses or are reference pulses, and means for using the signal to control the position of the transducer means relative to the body such that the signal is maintained at a minimum value. Pulses from unit 26 feed a transmitter 29 which causes transmitting/receiving probe 10 to inject pulses into the test body. Received pulses are passed via unit 33 to a comparison circuit 48, the pulses being maintained constant in amplitude by A.G.C. 38. If the A.G.C. cannot maintain constant amplitude an alarm system 40 is actuated. A gating circuit 35 allows unit 33 to be operative only during predetermined periods after each transmitted pulse. Pulses from a generator 47 are also fed to the circuit 48, which gives a signal indicative of the time difference between the two sets of pulses fed to it. The signal is fed to a meter 49 and, via an amplifier 50, to a servo-mechanism 51 which moves the probe in such a manner that the signal is maintained at a minimum. Generator 47 may be replaced by a second probe which transmits and receives pulses along a path different from that associated with probe 10, and the probes may operate with transverse, surface or Lamb waves. The invention may be used for automatic control of a manufacturing process. As applied to a welding apparatus, the transducer means and the welding electrode are mounted on a movable carriage. The transducer means are mounted ahead of, and are shielded from, the electrode. A coupling liquid is provided between the transducer probes and the material to be welded, the probes being capable of limited vertical movement by being hinged to the body of the carriage.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB528058A GB899124A (en) | 1959-02-11 | 1959-02-11 | Improvements in and relating to ultrasonic testing |
BE575840A BE575840A (en) | 1959-02-11 | 1959-02-18 | Ultra-sound control device. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB528058A GB899124A (en) | 1959-02-11 | 1959-02-11 | Improvements in and relating to ultrasonic testing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB899124A true GB899124A (en) | 1962-06-20 |
Family
ID=9793141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB528058A Expired GB899124A (en) | 1959-02-11 | 1959-02-11 | Improvements in and relating to ultrasonic testing |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE575840A (en) |
GB (1) | GB899124A (en) |
-
1959
- 1959-02-11 GB GB528058A patent/GB899124A/en not_active Expired
- 1959-02-18 BE BE575840A patent/BE575840A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE575840A (en) | 1959-06-15 |
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