JPS61163972U - - Google Patents
Info
- Publication number
- JPS61163972U JPS61163972U JP4723785U JP4723785U JPS61163972U JP S61163972 U JPS61163972 U JP S61163972U JP 4723785 U JP4723785 U JP 4723785U JP 4723785 U JP4723785 U JP 4723785U JP S61163972 U JPS61163972 U JP S61163972U
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- change
- resistance value
- fatigue
- attached
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
図面はこの考案の構造物の疲労き裂検知装置の
１実施例を示し、第１図は一部切断正面図、第２
図はセンサ本体を示し、同図ａは正面図、同図ｂ
は平面図、第３図はセンサ本体１の要部の正面図
、第４図は疲労判定回路の結線図、第５図は装置
の取付状態の断面図である。
１…センサ本体、４…初期き裂、５…電気抵抗
線、７…疲労判定回路、９…ばね、１７…構造物
、１８…応力集中部。
The drawings show one embodiment of the device for detecting fatigue cracks in structures according to this invention.
The figure shows the sensor body, figure a is a front view, figure b
3 is a front view of the main parts of the sensor main body 1, FIG. 4 is a wiring diagram of the fatigue determination circuit, and FIG. 5 is a sectional view of the device in its installed state. DESCRIPTION OF SYMBOLS 1... Sensor main body, 4... Initial crack, 5... Electric resistance wire, 7... Fatigue determination circuit, 9... Spring, 17... Structure, 18... Stress concentration part.
Claims (1)
弾性体を介してそれぞれ取り付けられ中央部に前
記両端部間を結ぶ直線に直交する方向に初期き裂
が形成されたセンサ本体と、前記センサ本体の表
面にそれぞれ前記初期き裂を挾んで取り付けられ
前記直交する方向に所定ピツチで配列された複数
本の電気抵抗線と、前記各抵抗線を配線して構成
され前記抵抗線の断線に伴なう抵抗値変化により
前記構造物の疲労を判定する回路とを備えた構造
物の疲労き裂検知装置。 a sensor main body, each of which has both ends attached to two positions sandwiching a stress concentration part of the structure via an elastic body, and has an initial crack formed in the central part in a direction perpendicular to a straight line connecting the two ends; A plurality of electrical resistance wires are attached to the surface of the sensor body, each sandwiching the initial crack, and arranged at a predetermined pitch in the orthogonal direction, and each of the resistance wires is wired, and the resistance wire is disconnected. A fatigue crack detection device for a structure, comprising: a circuit for determining fatigue of the structure based on a change in resistance value caused by a change in resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4723785U JPS61163972U (en) | 1985-03-30 | 1985-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4723785U JPS61163972U (en) | 1985-03-30 | 1985-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61163972U true JPS61163972U (en) | 1986-10-11 |
Family
ID=30562376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4723785U Pending JPS61163972U (en) | 1985-03-30 | 1985-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61163972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002538519A (en) * | 1999-02-26 | 2002-11-12 | エスアールアイ インターナショナル | Event recording device having identification code |
-
1985
- 1985-03-30 JP JP4723785U patent/JPS61163972U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002538519A (en) * | 1999-02-26 | 2002-11-12 | エスアールアイ インターナショナル | Event recording device having identification code |