JPH0145013B2 - - Google Patents
Info
- Publication number
- JPH0145013B2 JPH0145013B2 JP57211635A JP21163582A JPH0145013B2 JP H0145013 B2 JPH0145013 B2 JP H0145013B2 JP 57211635 A JP57211635 A JP 57211635A JP 21163582 A JP21163582 A JP 21163582A JP H0145013 B2 JPH0145013 B2 JP H0145013B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- rod
- wall
- test
- sealed chamber
- 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
- 238000012360 testing method Methods 0.000 claims description 41
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 13
- 238000004154 testing of material Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009661 fatigue test Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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 Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【発明の詳細な説明】
本発明は材料試験機における試験荷重補正検出
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a test load correction detection device for a material testing machine.
オートクレーブなど高温、高圧中の容器内にお
いて各種疲労試験あるいは引張試験などを行う場
合、容器内の試験片に荷重を伝達する荷重棒と、
容器壁の間のシール摩擦力が試験荷重に大きく影
響し正しいデータが得られない欠点がある。本発
明はこのような場合、荷重棒のシール部における
摩擦力の影響を除去して試験片に加わる試験荷重
を正確に検出する装置を提供することを目的とす
るものである。 When performing various fatigue tests or tensile tests in a container under high temperature and high pressure such as an autoclave, a load rod that transmits the load to the test piece inside the container,
The drawback is that the seal friction force between the container walls greatly affects the test load, making it difficult to obtain accurate data. In such a case, it is an object of the present invention to provide a device that eliminates the influence of the frictional force at the seal portion of the load rod and accurately detects the test load applied to the test piece.
しかして、この発明は、封閉室内部で支持され
る試験片に対し、外部から試験荷重が荷重棒を介
して与えられ、その荷重棒が封閉室壁に対し摺動
可能でかつシール係合して貫通している材料試験
機において、前記封閉室内部で前記荷重棒に連結
され、前記荷重棒と反対側で前記封閉室壁に対し
摺動可能でかつシール係合して貫通してる平衡棒
と、前記荷重棒に加わる荷重を検出する機構と、
前記荷重棒の前記封閉室壁におけるシール部のシ
ール摩擦力を検出する機構と、前記平衡棒の前記
封閉室壁におけるシール部のシール摩擦力を検出
する機構と、前記３種類の検出機構において検出
された検出信号を演算して試験片に負荷される実
効試験荷重を算出する演算機構とを具えたことを
特徴とするものである。 Therefore, in this invention, a test load is applied from the outside to a test piece supported inside a sealed chamber via a load rod, and the load rod is slidable and sealingly engages with the wall of the closed chamber. a counterbalance rod connected to the load rod inside the enclosed chamber and slidable and sealingly engaged with the wall of the enclosed chamber on the opposite side of the load rod; and a mechanism for detecting a load applied to the load rod;
A mechanism for detecting the seal friction force of the seal portion of the load rod on the sealed chamber wall, a mechanism for detecting the seal friction force of the seal portion of the balance rod on the sealed chamber wall, and detection by the three types of detection mechanisms. The present invention is characterized by comprising a calculation mechanism that calculates the effective test load to be applied to the test piece by calculating the detected signal.
高温、高圧の特殊な容器内で各種の疲労試験あ
るいは引張試験を行う場合、容器内の溶液が外部
に逸出すると非常に危険であるので、容器と荷重
棒の連結部において特殊なシールを取付けること
が多い。このような場合、容器内部が高圧になれ
ばなるほどシール部に圧力が加わり摩擦力が増大
する。この状態で各種の試験、たとえば静的引張
テストあるいは疲労試験を行うと、シール部の摩
擦力が実際の試験片に加わる試験荷重より大きく
なり、試験棒に取付けたロードセルにおいて検出
される荷重が実質上シール部の摩擦力を検出し実
際の試験片に加わる試験荷重を検出しないことに
なる。これに対し本発明では荷重棒に加わる荷重
を検出する機構の他に荷重棒および平衡棒の容器
壁におけるシール部のシール摩擦力を検出する機
構を設け、３種類の検出機構において検出された
検出信号を演算することにより試験片に付加され
る実効試験荷重を算出検出できるようにしたもの
である。 When performing various fatigue tests or tensile tests in a special container at high temperature and high pressure, it is extremely dangerous if the solution inside the container escapes to the outside, so a special seal is installed at the connection between the container and the load rod. There are many things. In such a case, the higher the pressure inside the container, the more pressure is applied to the sealing portion and the frictional force increases. When various tests such as static tensile tests or fatigue tests are performed in this state, the frictional force of the seal becomes larger than the test load actually applied to the test piece, and the load detected by the load cell attached to the test bar becomes substantially This means that the frictional force of the upper seal is detected and the test load applied to the actual test piece is not detected. In contrast, in the present invention, in addition to the mechanism for detecting the load applied to the load rod, a mechanism for detecting the seal friction force of the seal portion of the load rod and the balance rod on the container wall is provided, and the detection detected by the three types of detection mechanisms is provided. By calculating the signals, the effective test load applied to the test piece can be calculated and detected.
以下本発明の実施例を図面を参照して説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
図において１はオートクレーブなどの封閉室
で、その内部において試験片２の一端が固定枠３
によつて支持される。試験片２の他端は可動枠４
に連結され、可動枠４には荷重棒５と平衡棒６が
一体に形成されている。荷重棒５及び平衡棒６は
試験片２と図で垂直軸線上に一線に配置されるも
ので、それぞれオートクレーブ１の蓋板７及び頂
壁８を貫通して外部に伸び、その摺動接触部に適
宜のシール手段９，１０が設けられ、オートクレ
ーブ内部が封密状態に保持されるようになつてい
る。１１はオートクレーブ１内に封入された流体
を示す。オートクレーブ１は一対の支柱１２，１
３間にかけ渡された下側のクロスヘツド１４上に
固定して取付けられている。支柱１２，１３に
は、また上側のクロスヘツド１５が設けられ、可
動枠の平衡棒６がこの上側クロスヘツド１５に設
けられた遊嵌穴１６を挿通状態で貫通して伸びて
いる。荷重棒５はオートクレーブ１の外部におい
てロードセル１７を介して荷重付与機構１８に連
結されている。荷重付与機構１８は下段のクロス
ヘツド１４よりも更に下方に位置するクロスヘツ
ド１９によつて支持されている。荷重付与機構１
８は、例えばサーボ弁２０を具えた油圧機構とす
ることにより荷重棒５に引張荷重あるいは振動荷
重などの必要な試験荷重を付与できるようになつ
ている。 In the figure, 1 is a sealed chamber such as an autoclave, inside which one end of the test piece 2 is attached to a fixed frame 3.
Supported by. The other end of the test piece 2 is a movable frame 4
A load rod 5 and a balance rod 6 are integrally formed on the movable frame 4. The load rod 5 and the balance rod 6 are arranged in line with the test piece 2 on the vertical axis in the figure, and extend outward through the lid plate 7 and the top wall 8 of the autoclave 1, respectively, and their sliding contact parts Appropriate sealing means 9 and 10 are provided to keep the inside of the autoclave in a sealed state. Reference numeral 11 indicates a fluid sealed within the autoclave 1. The autoclave 1 has a pair of supports 12,1
It is fixedly mounted on the lower crosshead 14 which spans between the two. The struts 12, 13 are also provided with an upper crosshead 15, through which the balance rod 6 of the movable frame is inserted and extends. The load rod 5 is connected to a load applying mechanism 18 via a load cell 17 outside the autoclave 1. The load applying mechanism 18 is supported by a crosshead 19 located further below the lower crosshead 14. Loading mechanism 1
8 is a hydraulic mechanism equipped with a servo valve 20, for example, so that a necessary test load such as a tensile load or a vibration load can be applied to the load rod 5.
本発明によれば、荷重棒５のオートクレーブ蓋
板部におけるシール部９のシール摩擦力を検出す
る機構２１が付設される。この摩擦力検出機構は
周知の歪ゲージを利用することができる。図に示
す実施例においては可動枠４が上下に移動したと
きオートクレーブ１内部の空間容積が変化しない
ように可動枠４には荷重棒５と反対側で平衡棒６
が設けられており、この平衡棒６がオートクレー
ブ頂壁８側においてシール接触部１０を有するの
で、このシール接触部１０における摩擦力を検出
する機構２２が併せて付設されている。 According to the present invention, a mechanism 21 is provided to detect the sealing friction force of the sealing portion 9 on the autoclave lid plate portion of the load rod 5. This frictional force detection mechanism can utilize a well-known strain gauge. In the embodiment shown in the figure, the movable frame 4 has a load rod 5 and a balance rod 6 on the opposite side so that the space volume inside the autoclave 1 does not change when the movable frame 4 moves up and down.
Since this balance rod 6 has a seal contact portion 10 on the side of the autoclave top wall 8, a mechanism 22 for detecting the frictional force at this seal contact portion 10 is also attached.
荷重付与機構１８によつて荷重棒５に与えられ
た試験荷重はロードセル１７によつて検出され、
ロード増幅器２３により電気信号に変換された
後、演算ユニツト２４に与えられる。一方摩擦検
出機構２１，２２において検出されたシール摩擦
力は摩擦力検出増幅器２５により電気信号に変換
された後、演算ユニツト２４においては荷重棒５
において検出される荷重から９，１０のシール部
における摩擦力を差引く演算操作が行われ、これ
が試験片の実荷重を表示するデイジタルモニタユ
ニツト２６に与えられる。演算ユニツト２４にお
いて演算算出された試験片に与えられる実荷重
は、またコントロールユニツト２７に与えられ、
これによつて荷重付与機構１８のサーボ弁２０を
制御して試験片２に所望の試験荷重が与えられる
ようにする。 The test load applied to the load rod 5 by the load applying mechanism 18 is detected by the load cell 17,
After being converted into an electrical signal by the load amplifier 23, it is applied to the arithmetic unit 24. On the other hand, the seal friction force detected by the friction detection mechanisms 21 and 22 is converted into an electric signal by a friction force detection amplifier 25, and then sent to the load rod 5 in the calculation unit 24.
An arithmetic operation is performed to subtract the frictional force at the seal portions 9 and 10 from the load detected at , and this is provided to the digital monitor unit 26 which displays the actual load on the test piece. The actual load applied to the test piece calculated by the calculation unit 24 is also applied to the control unit 27,
This controls the servo valve 20 of the load applying mechanism 18 so that a desired test load is applied to the test piece 2.
以上説明したように、この発明によれば、試験
片２が封閉室１の内部で支持され、荷重棒５が封
閉室１の壁を貫通し、封閉室１の壁に対しシール
係合し、摺動し、試験荷重が試験片２に与えられ
る。そして、検出機構１７によつて荷重棒５に加
えられる荷重が検出される。さらに、この発明に
よれば、封閉室１の内部において、平衡棒６が荷
重棒５に連結され、荷重棒５と反対側において、
平衡棒６が封閉室１の壁を貫通し、封閉室１の壁
に対しシール係合し、摺動する。したがつて、封
閉室１の内部圧力が荷重棒５および平衡棒６に作
用し、その力が互いに相殺され、封閉室１の内部
圧力の影響を補償することができる。さらに、こ
の発明によれば、検出機構２１によつて荷重棒５
と封閉室１の壁間のシール摩擦力が検出され、検
出機構２２によつて平衡棒６と封閉室１の壁間の
シール摩擦力が検出される。そして、演算機構２
４によつて３種類の検出機構１７，２１，２２の
検出信号が演算され、試験片２に負荷される実効
試験荷重が算出される。この結果、荷重棒５およ
び平衡棒６のシール摩擦力の影響を除去し、試験
片２に負荷される実効試験荷重を正確に検出し、
表示することができる。 As explained above, according to the present invention, the test piece 2 is supported inside the sealed chamber 1, the load rod 5 penetrates the wall of the sealed chamber 1, and sealingly engages with the wall of the sealed chamber 1, The test piece 2 is slid and a test load is applied to the test piece 2. Then, the load applied to the load rod 5 is detected by the detection mechanism 17. Further, according to the present invention, inside the sealed chamber 1, the balance rod 6 is connected to the load rod 5, and on the opposite side to the load rod 5,
A counterbalance rod 6 passes through the wall of the closed chamber 1 and slides in sealing engagement against the wall of the closed chamber 1. Therefore, the internal pressure of the sealed chamber 1 acts on the load rod 5 and the balance rod 6, and the forces cancel each other out, making it possible to compensate for the influence of the internal pressure of the sealed chamber 1. Further, according to the present invention, the detection mechanism 21 detects the load rod 5.
The sealing friction force between the balance rod 6 and the wall of the sealed chamber 1 is detected, and the sealing friction force between the balance rod 6 and the wall of the sealed chamber 1 is detected by the detection mechanism 22. And calculation mechanism 2
4, the detection signals of the three types of detection mechanisms 17, 21, and 22 are calculated, and the effective test load applied to the test piece 2 is calculated. As a result, the influence of the seal friction force of the load rod 5 and the balance rod 6 is removed, and the effective test load applied to the test piece 2 is accurately detected.
can be displayed.
図は本発明の実施例装置の大要を示す一部縦断
正面図である。
１……封閉室（オートクレーブ）、２……試験
片、３……固定枠、４……可動枠、５……荷重
棒、６……平衡棒、７……封閉室（オートクレー
ブ）の蓋板、８……封閉室（オートクレーブ）の
頂壁、９，１０……シール部、１７……ロードセ
ル、１８……荷重付与機構、２１，２２……シー
ル摩擦力検出機構、２３……ロード増幅器、２４
……演算ユニツト、２５……摩擦力検出増幅器、
２６……デイジタルモニタユニツト、２７……コ
ントロールユニツト。
The figure is a partially longitudinal front view showing the outline of an embodiment of the device of the present invention. 1... Sealed chamber (autoclave), 2... Test piece, 3... Fixed frame, 4... Movable frame, 5... Load bar, 6... Balance bar, 7... Lid plate of sealed chamber (autoclave) , 8... Top wall of sealed chamber (autoclave), 9, 10... Seal portion, 17... Load cell, 18... Load applying mechanism, 21, 22... Seal friction force detection mechanism, 23... Load amplifier, 24
... Arithmetic unit, 25 ... Frictional force detection amplifier,
26...Digital monitor unit, 27...Control unit.
Claims (1)
から試験荷重が荷重棒を介して与えられ、その荷
重棒が封閉室壁に対し摺動可能でかつシール係合
して貫通している材料試験機において、前記封閉
室内部で前記荷重棒に連結され、前記荷重棒と反
対側で前記封閉室壁に対し摺動可能でかつシール
係合して貫通してる平衡棒と、前記荷重棒に加わ
る荷重を検出する機構と、前記荷重棒の前記封閉
室壁におけるシール部のシール摩擦力を検出する
機構と、前記平衡棒の前記封閉室壁におけるシー
ル部のシール摩擦力を検出する機構と、前記３種
類の検出機構において検出された検出信号を演算
して試験片に負荷される実効試験荷重を算出する
演算機構とを具えたことを特徴とする材料試験機
における試験荷重補正検出装置。1. A test load is applied from the outside to a test piece supported inside a sealed chamber via a load rod, and the load rod is slidable against the wall of the closed chamber and penetrates through the wall in sealing engagement. In the testing machine, a balance rod connected to the load rod inside the sealed chamber, slidable against the wall of the closed chamber on the opposite side of the load rod, and penetrating through the wall in sealing engagement; a mechanism for detecting an applied load; a mechanism for detecting a sealing friction force of a sealing portion of the load rod on the sealed chamber wall; and a mechanism detecting a sealing frictional force of a sealing portion of the balancing rod on the sealed chamber wall; A test load correction detection device for a material testing machine, comprising: a calculation mechanism that calculates an effective test load to be applied to a test piece by calculating detection signals detected by the three types of detection mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21163582A JPS59100838A (en) | 1982-11-30 | 1982-11-30 | Device for correcting and detecting test load in material testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21163582A JPS59100838A (en) | 1982-11-30 | 1982-11-30 | Device for correcting and detecting test load in material testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59100838A JPS59100838A (en) | 1984-06-11 |
| JPH0145013B2 true JPH0145013B2 (en) | 1989-10-02 |
Family
ID=16609040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21163582A Granted JPS59100838A (en) | 1982-11-30 | 1982-11-30 | Device for correcting and detecting test load in material testing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59100838A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61120943A (en) * | 1984-11-19 | 1986-06-09 | Seiko Instr & Electronics Ltd | Heat stress distortion measuring apparatus |
| JP2013167513A (en) * | 2012-02-15 | 2013-08-29 | Nippon Steel & Sumitomo Metal | Measurement mechanism for test device in high pressure gas |
| JP2016075612A (en) * | 2014-10-08 | 2016-05-12 | 新日鐵住金株式会社 | Measurement device of mechanical characteristic in high pressure gas |
| KR102315381B1 (en) * | 2019-09-23 | 2021-10-21 | 한국수력원자력 주식회사 | Method for compensation of friction force at sealing parts in actuator of autoclave |
| CN114112691B (en) * | 2021-12-04 | 2023-04-07 | 上海百若试验仪器有限公司 | Material tensile testing machine capable of simulating fluid environment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621035A (en) * | 1979-07-31 | 1981-02-27 | Saginomiya Seisakusho Inc | Measuring method for load of high temperature and high pressure fatigue tester |
-
1982
- 1982-11-30 JP JP21163582A patent/JPS59100838A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621035A (en) * | 1979-07-31 | 1981-02-27 | Saginomiya Seisakusho Inc | Measuring method for load of high temperature and high pressure fatigue tester |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59100838A (en) | 1984-06-11 |
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