GB708413A - A method of and device for measuring thickness by ultrasonic pulses - Google Patents
A method of and device for measuring thickness by ultrasonic pulsesInfo
- Publication number
- GB708413A GB708413A GB19291/52A GB1929152A GB708413A GB 708413 A GB708413 A GB 708413A GB 19291/52 A GB19291/52 A GB 19291/52A GB 1929152 A GB1929152 A GB 1929152A GB 708413 A GB708413 A GB 708413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- echo
- circuit
- recurrence frequency
- krautkramer
- 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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
708,413. Ultrasonic testing devices. KRAUTKRAMER, J., and KRAUTKRAMER, H. July 30, 1952 [Nov. 8, 1951], No. 19291/52. Class 118 (2). In an ultrasonic pulse-echo system for determining the thickness of sheet material the recurrence frequency of the multiple echoes caused by multiple reflection of a transmitted pulse between the two surfaces of the sheet is measured, the transmitter pulse recurrence frequency being low enough to ensure that the echoes of one pulse die away before the next pulse is transmitted. The echo recurrence frequency is measured by. applying the demodulated echo wave pulses to a circuit which is tuned to resonate therewith, the resonance condition being indicated by applying the output from the circuit to a cathode-ray tube on to a rectifier and voltmeter. For thick sheets, the measurement may be made on one harmonic of the echo frequency and checked by testing on another harmonic. The demodulator and turnable circuit may comprise a single unit which can be plugged into a conventional type testing device.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE708413X | 1951-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708413A true GB708413A (en) | 1954-05-05 |
Family
ID=6617611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19291/52A Expired GB708413A (en) | 1951-11-08 | 1952-07-30 | A method of and device for measuring thickness by ultrasonic pulses |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB708413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220248A (en) * | 1962-08-20 | 1965-11-30 | American Mach & Foundry | Ultrasonic inspection device |
| US3276249A (en) * | 1962-09-24 | 1966-10-04 | Southern Gas Ass | Ultrasonic measuring apparatus |
-
1952
- 1952-07-30 GB GB19291/52A patent/GB708413A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220248A (en) * | 1962-08-20 | 1965-11-30 | American Mach & Foundry | Ultrasonic inspection device |
| US3276249A (en) * | 1962-09-24 | 1966-10-04 | Southern Gas Ass | Ultrasonic measuring apparatus |
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