JPH029855U - - Google Patents
Info
- Publication number
- JPH029855U JPH029855U JP8661788U JP8661788U JPH029855U JP H029855 U JPH029855 U JP H029855U JP 8661788 U JP8661788 U JP 8661788U JP 8661788 U JP8661788 U JP 8661788U JP H029855 U JPH029855 U JP H029855U
- Authority
- JP
- Japan
- Prior art keywords
- load
- strain
- test piece
- frame
- elastic follow
- 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
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000009673 low cycle fatigue testing Methods 0.000 claims 2
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
第１図は本考案の一実施例の装置系統図、第２
図は従来例の制御方式により得られるひずみと時
間の関係図、第３図は本考案より得られるひずみ
と時間の関係図、第４図は本考案より得られる応
力―ひずみヒステリシスループ図、第５図は従来
例の弾性追従ひずみが存在する時の応力―ひずみ
ヒステリシスループ図を示す。
１…試験片、２…負荷ロツド、３…負荷ロツド
、４…レバー、５…偏心カム、６…モータ、７…
クラツチ、８…伸び計、９…変位アンプ、１０…
関数発生器、１１…偏差器、１２…ブレーキ、１
３…コンピユータ、１４…モータ制御器、１５…
ロードアンプ、１６…ロードセル。
Figure 1 is a system diagram of an apparatus according to an embodiment of the present invention;
The figure shows the relationship between strain and time obtained by the conventional control method, Figure 3 shows the relationship between strain and time obtained by the present invention, and Figure 4 shows the stress-strain hysteresis loop diagram obtained by the present invention. FIG. 5 shows a stress-strain hysteresis loop diagram when elastic follow-up strain exists in the conventional example. DESCRIPTION OF SYMBOLS 1...Test piece, 2...Load rod, 3...Load rod, 4...Lever, 5...Eccentric cam, 6...Motor, 7...
Clutch, 8...Extensometer, 9...Displacement amplifier, 10...
Function generator, 11...deviator, 12...brake, 1
3...Computer, 14...Motor controller, 15...
Load amplifier, 16...Load cell.
Claims (1)
フレームに弾性的に支持された荷重伝達手段に接
続し、前記荷重伝達手段が繰返し荷重発生手段に
接続された構造とする低サイクル疲労試験装置に
おいて、 前記試験片に発生する弾性追従ひずみ、あるい
は、前記弾性追従ひずみによる荷重の減少が、許
容値以上になれば、前記弾性追従ひずみが零にな
るように、あるいは、前記荷重の減少が零になる
ように制御を行うことを特徴とする低サイクル疲
労試験装置。[Claims for Utility Model Registration] One end of the test piece was fixed to a frame, the other end was connected to a load transmission means elastically supported by the frame, and the load transmission means was connected to a cyclic load generation means. In the low cycle fatigue testing apparatus, the structure is such that the elastic follow-up strain becomes zero when the elastic follow-up strain generated in the test piece or the reduction in load due to the elastic follow-up strain exceeds a permissible value. Alternatively, a low cycle fatigue testing device characterized in that control is performed so that the decrease in the load becomes zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8661788U JPH029855U (en) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8661788U JPH029855U (en) | 1988-07-01 | 1988-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH029855U true JPH029855U (en) | 1990-01-22 |
Family
ID=31311255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8661788U Pending JPH029855U (en) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH029855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595951U (en) * | 1982-07-06 | 1984-01-14 | 真藤 勝男 | Fire extinguishing water spray equipment |
-
1988
- 1988-07-01 JP JP8661788U patent/JPH029855U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595951U (en) * | 1982-07-06 | 1984-01-14 | 真藤 勝男 | Fire extinguishing water spray equipment |
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