JPS5614154A - Inspection system for structure - Google Patents
Inspection system for structureInfo
- Publication number
- JPS5614154A JPS5614154A JP9079179A JP9079179A JPS5614154A JP S5614154 A JPS5614154 A JP S5614154A JP 9079179 A JP9079179 A JP 9079179A JP 9079179 A JP9079179 A JP 9079179A JP S5614154 A JPS5614154 A JP S5614154A
- Authority
- JP
- Japan
- Prior art keywords
- detected signal
- frequency
- recorded
- detection signals
- components
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To make it easy to detect the secular change of a structure by detecting the energy value of each frequency component by converting vibration of the structure into an electric detected signal and then by dividing this detected signal into fixed frequency components.
CONSTITUTION: A structure is vibrated by striking and its vibration is converted into an electric detected signal by mechanoelectric converter 1. This detected signal is divided into fixed frequency components by filters BPF1WSPFn of dividing circuit 2 and components, after being amplified by amplifiers A1WAn of detecting circuit 3, are rectified by rectifiers D1WDn to obtain detection signals. Those detection signals are input to recorder RCDR successively and then frequency-energy characteristics are recorded on a recording body. A fixed period later, frequency- energy characteristics are also recorded in the same method. Those characteristics are compared, so that the secular change of the structure can easily be detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9079179A JPS5614154A (en) | 1979-07-16 | 1979-07-16 | Inspection system for structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9079179A JPS5614154A (en) | 1979-07-16 | 1979-07-16 | Inspection system for structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5614154A true JPS5614154A (en) | 1981-02-10 |
Family
ID=14008403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9079179A Pending JPS5614154A (en) | 1979-07-16 | 1979-07-16 | Inspection system for structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5614154A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127131A (en) * | 1982-01-23 | 1983-07-28 | Nippon Sheet Glass Co Ltd | Measuring device for sound of shock to floor |
-
1979
- 1979-07-16 JP JP9079179A patent/JPS5614154A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58127131A (en) * | 1982-01-23 | 1983-07-28 | Nippon Sheet Glass Co Ltd | Measuring device for sound of shock to floor |
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