JPH06207894A - Bending static fatigue tester for ceramics - Google Patents
Bending static fatigue tester for ceramicsInfo
- Publication number
- JPH06207894A JPH06207894A JP279193A JP279193A JPH06207894A JP H06207894 A JPH06207894 A JP H06207894A JP 279193 A JP279193 A JP 279193A JP 279193 A JP279193 A JP 279193A JP H06207894 A JPH06207894 A JP H06207894A
- Authority
- JP
- Japan
- Prior art keywords
- load
- jig
- pin
- support
- ceramics
- 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
- 230000003068 static effect Effects 0.000 title claims abstract description 21
- 239000000919 ceramic Substances 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims description 41
- 238000009661 fatigue test Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013001 point bending Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/388—Ceramics
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セラミックスの曲げ静
疲労試験装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending static fatigue test apparatus for ceramics.
【０００２】[0002]
【従来の技術】周知のように、構造部品用の材料等で
は、試験片に一定応力を長時間負荷し、破断時間を測定
する静疲労試験を行ない、その静的疲労特性を求めるこ
とは極めて重要である。また、部品設計上不可欠であ
る。セラミックスにおいては、一定応力を長時間加える
ことにより破壊が生じる場合がある。したがって、セラ
ミックスの構造部品等への応用にあたっても、静的疲労
特性を考慮した設計を行う必要がある。セラミックスで
は、引張応力を負荷することが難しいため、曲げ応力下
の試験が主に行われている。2. Description of the Related Art As is well known, in the case of materials for structural parts, it is extremely difficult to obtain static fatigue characteristics by subjecting a test piece to a constant stress for a long time and performing a static fatigue test to measure the breaking time. is important. It is also essential for component design. In ceramics, destruction may occur by applying constant stress for a long time. Therefore, when applying ceramics to structural parts and the like, it is necessary to design in consideration of static fatigue characteristics. Since it is difficult to apply tensile stress to ceramics, tests under bending stress are mainly performed.
【０００３】従来、セラミックスの曲げ静疲労試験装置
にあたっては、ロ−ドセルにて荷重を検出しつつ油圧ま
たは電気機械的機構によりスム−ズに荷重を負荷する装
置、てこの原理を利用してデッドウェイトにより荷重を
負荷する装置等が知られている。Conventionally, in a bending static fatigue test apparatus for ceramics, an apparatus for applying a load to a smooth by hydraulic pressure or an electromechanical mechanism while detecting the load by a load cell; A device and the like for applying a load by a weight is known.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
セラミックスの曲げ静疲労試験装置によると、荷重負荷
時に衝撃荷重を加えない油圧または電気機械的機構を用
いる方式のものは、低荷重での専用試験装置ではなく高
荷重までの試験を可能としている。そのため、装置が大
型化するので装置設置面積が広くなり、高剛性化の必要
と合わせて装置が高価になるのに加へ、装置の構造が複
雑になるため操作が難しく維持費用がかかる。However, according to the conventional bending static fatigue test apparatus for ceramics, the method using the hydraulic or electromechanical mechanism that does not apply an impact load at the time of load application is a dedicated test under low load. It enables testing up to high loads, not the equipment. As a result, the device becomes large in size, resulting in a large installation area of the device, which makes the device expensive due to the need for high rigidity. In addition, the structure of the device becomes complicated, making operation difficult and incurring maintenance costs.
【０００５】また、てこの原理を利用した方式のもの
は、小さな荷重を負荷して大きな負荷を試験片に加える
ため衝撃荷重が負荷されやすい問題がある。本発明は、
このような問題点を解決するためになされたもので、試
験片に衝撃荷重を加えず、構造が簡単でコンパクトなセ
ラミックスの曲げ静疲労試験装置を提供することを目的
とする。Further, the method utilizing the lever principle has a problem that an impact load is easily applied because a small load is applied and a large load is applied to the test piece. The present invention is
The present invention has been made in order to solve such a problem, and an object thereof is to provide a bending static fatigue test apparatus for ceramics, which does not apply an impact load to a test piece and has a simple structure and is compact.
【０００６】[0006]
【課題を解決するための手段】そのために、本発明のセ
ラミックスの曲げ静疲労試験装置では、試験片を支持ピ
ンを介して支える支持治具と、試験片に荷重ピンを介し
て荷重を負荷する負荷治具と、前記負荷治具を通じて前
記試験片に荷重を負荷する荷重負荷手段を備えた装置に
おいて、前記荷重負荷手段と前記負荷治具の間に介在す
る弾性体を備えたことを特徴とする。Therefore, in the bending static fatigue testing apparatus for ceramics of the present invention, a supporting jig for supporting the test piece through the support pin and a load is applied to the test piece through the load pin. An apparatus including a load jig and a load applying means for applying a load to the test piece through the load jig, comprising an elastic body interposed between the load applying means and the load jig. To do.
【０００７】[0007]
【作用】本発明のセラミックスの曲げ静疲労試験装置に
よると、荷重負荷時、ばね、ゴム等の弾性体という簡便
な手段だけで、荷重負荷手段から負荷治具を介して試験
片に衝撃荷重が加わらない。According to the ceramic bending static fatigue test apparatus of the present invention, when a load is applied, an impact load is applied from the load applying means to the test piece through the loading jig only by a simple means such as an elastic body such as a spring or rubber. Do not join.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。本発明の第１実施例によるセラミックスの曲げ静
疲労試験装置を図１および図２に示す。負荷ウェイト台
１３はコイルばね５により負荷伝達治具１１と連結され
る。バランスウェイト１０は負荷伝達治具１１とネジ構
造で接続し、バランスウェイト１０を回転し負荷伝達治
具１１の基端１１ａからの出入りを調節することによ
り、負荷伝達治具１１の傾きを適正に保つ。負荷伝達治
具１１の突部１２の先端には凹部１２ａがありボ−ル６
と密接している。負荷治具２の中央部にも凹部２ａがあ
りボ−ル６と密接している。このボール６、凹部２ａお
よび１２ａにより、試験片４にかかる偏荷重を防止して
いる。荷重ピン７は負荷治具２の底面に接し、支持治具
３に形成されたピン溝１５およびピン溝１６に嵌め込ま
れる。試験片４は荷重ピン７と支持ピン８間に挾持され
る。支持ピン８は、支持治具３に形成されたピン溝１７
およびピン溝１８に嵌め込まれ、支持治具３の内部の底
面と接して試験片４を支える。支持治具３はネジ２０で
支持台９上に固定されている。負荷治具２と試験片４
は、支持治具３のピン溝１５、１６、１７およびピン溝
１８が形成される壁体４１および壁体４２により荷重ピ
ン７の軸方向への動きを抑制される。さらに負荷治具２
は、負荷治具２に形成されたピン溝１９により荷重ピン
７の水平垂直方向への動きを抑制される。荷重ピン７は
ピン溝１５およびピン溝１６に、支持ピン８はピン溝１
７およびピン溝１８にそれぞれ嵌り込み、荷重ピン７お
よび支持ピン８がずれないようになっている。第１実施
例では、試験は、試験片４に加わる総加重を２０Ｋｇ以
下、室温で実施する。Embodiments of the present invention will be described below with reference to the drawings. A bending static fatigue test apparatus for ceramics according to a first embodiment of the present invention is shown in FIGS. The load weight base 13 is connected to the load transmission jig 11 by the coil spring 5. The balance weight 10 is connected to the load transmission jig 11 with a screw structure, and the balance weight 10 is rotated to adjust the entrance / exit of the load transmission jig 11 from the base end 11a, so that the inclination of the load transmission jig 11 is properly adjusted. keep. The protrusion 12 of the load transmission jig 11 has a recess 12a at the tip thereof, and the ball 6
Close to. There is also a recess 2a in the center of the load jig 2, which is in close contact with the ball 6. The balls 6 and the recesses 2a and 12a prevent an unbalanced load applied to the test piece 4. The load pin 7 contacts the bottom surface of the load jig 2 and is fitted into the pin groove 15 and the pin groove 16 formed in the support jig 3. The test piece 4 is held between the load pin 7 and the support pin 8. The support pin 8 has a pin groove 17 formed in the support jig 3.
Also, the test piece 4 is fitted into the pin groove 18 and contacts the bottom surface inside the support jig 3 to support the test piece 4. The support jig 3 is fixed on the support base 9 with screws 20. Load jig 2 and test piece 4
The wall body 41 and the wall body 42 in which the pin grooves 15, 16, 17 and the pin groove 18 of the supporting jig 3 are formed suppress the axial movement of the load pin 7. Load jig 2
The movement of the load pin 7 in the horizontal and vertical directions is suppressed by the pin groove 19 formed in the load jig 2. The load pin 7 is in the pin grooves 15 and 16, and the support pin 8 is in the pin groove 1.
7 and the pin groove 18, respectively, so that the load pin 7 and the support pin 8 do not shift. In the first embodiment, the test is carried out at room temperature with a total weight of 20 kg or less applied to the test piece 4.
【０００９】負荷ウェイト台１３に載せられた負荷ウェ
イト１４の荷重はコイルばね５で荷重負荷時の衝撃荷重
が緩和され、負荷伝達治具１１を通じてボール６に伝わ
る。ボ−ル６から負荷治具２に伝わった荷重は支持治具
３に形成されたピン溝１５およびピン溝１６に嵌め込ま
れた荷重ピン７を介して試験片４に負荷される。試験片
４が加えられた荷重により破断すると、負荷ウェイト台
１３が破断感知器３１を押し、その電気信号が破断時間
カウンタ３０に伝わることにより、試験片４に荷重が加
わってから試験片４が破断するまでの時間が計測され
る。The load of the load weight 14 placed on the load weight base 13 is mitigated by the coil spring 5 when the load is applied, and is transmitted to the ball 6 through the load transmission jig 11. The load transmitted from the ball 6 to the load jig 2 is applied to the test piece 4 via the load pin 7 fitted in the pin groove 15 and the pin groove 16 formed in the support jig 3. When the test piece 4 breaks due to the applied load, the load weight base 13 pushes the break sensor 31 and the electric signal is transmitted to the break time counter 30 so that the test piece 4 is not loaded after the load is applied. The time to break is measured.
【００１０】本発明の第１実施例によると、曲げ静疲労
試験の実施時、負荷ウェイト台１３に負荷ウェイト１４
を乗せると、負荷ウェイト台１３、コイルバネ５、負荷
伝達治具１１、ボール６、負荷治具２、荷重ピン７を経
由して試験片４に荷重が作用する。このとき、コイルバ
ネ５の伸縮動作により試験片４に作用する衝撃荷重が緩
和されるため、試験データのバラツキを減らし精度の高
い測定ができる。また、地震等の地面から伝わる振動も
緩和できる。According to the first embodiment of the present invention, when the bending static fatigue test is carried out, the load weight base 13 and the load weight 14 are attached.
When loaded, the load acts on the test piece 4 via the load weight base 13, the coil spring 5, the load transmission jig 11, the ball 6, the load jig 2, and the load pin 7. At this time, since the impact load acting on the test piece 4 is alleviated by the expansion and contraction of the coil spring 5, the variation of the test data can be reduced and highly accurate measurement can be performed. Also, vibrations transmitted from the ground such as an earthquake can be mitigated.
【００１１】本発明の第２実施例によるセラミックスの
曲げ静疲労試験装置を図３および図４に示す。負荷ウェ
イト台１３は、上部にロ状の枠６０が形成されており、
負荷伝達治具１１の一端１１ａに接着されたゴム６１を
介して負荷伝達治具１１と連結している。支持治具３、
支持ピン８、試験片４、荷重ピン７、負荷治具２、ボー
ル６および負荷伝達治具１１の働きと位置関係は第１実
施例と同じである。負荷ウェイト１４により加えられた
荷重は負荷ウェイト台１３、ロ状枠６０を介してゴム６
１で荷重負荷時の衝撃荷重が緩和され、負荷伝達治具１
１を通じてボール６に伝わる。その後第１実施例と同じ
経路で試験片４に負荷される。A bending static fatigue test apparatus for ceramics according to a second embodiment of the present invention is shown in FIGS. 3 and 4. The load weight base 13 has a frame 60 formed on the upper portion,
The load transmitting jig 11 is connected to the load transmitting jig 11 via a rubber 61 bonded to one end 11a of the load transmitting jig 11. Support jig 3,
The functions and positional relationships of the support pin 8, the test piece 4, the load pin 7, the load jig 2, the ball 6, and the load transmission jig 11 are the same as in the first embodiment. The load applied by the load weight 14 is applied to the rubber 6 via the load weight base 13 and the frame 60.
1, the impact load under load is alleviated, and the load transmission jig 1
It is transmitted to the ball 6 through 1. After that, the test piece 4 is loaded through the same route as in the first embodiment.
【００１２】本発明の実施例では、弾性体として、第１
実施例ではコイルばねを、第２実施例ではゴムを使用し
たが、弾性体は衝撃荷重を緩和する作用があればよく、
特に材質、形状にとらわれることはない。しかし、一般
的に弾性限度が大きく、衝撃荷重を緩和し易いばねまた
はゴムを使用することが望ましい。また、４点曲げの実
施例を示したが、支持治具３、支持ピン８、荷重ピン
７、負荷治具２がそれぞれ独立しており、取り外しが自
由となっており、これらを交換することにより３点曲げ
または、スパンを変えた試験にも使用できる。さらに、
支持台９上に支持治具３を２個以上配置して一度に多数
の試験を同時に実施することも可能である。In the embodiment of the present invention, as the elastic body, the first
Although the coil spring is used in the embodiment and the rubber is used in the second embodiment, it is sufficient that the elastic body has a function of absorbing an impact load,
There is no particular restriction on the material or shape. However, it is generally desirable to use a spring or rubber that has a large elastic limit and that can easily absorb impact loads. Also, although an example of 4-point bending is shown, the support jig 3, the support pin 8, the load pin 7, and the load jig 2 are independent of each other and can be freely removed. It can also be used for tests with 3-point bending or different spans. further,
It is also possible to arrange two or more support jigs 3 on the support base 9 and perform a large number of tests at the same time.
【００１３】[0013]
【発明の効果】以上説明したように本発明のセラミック
スの曲げ静疲労試験装置によると、ばね、ゴム等の弾性
体を経由して試験片に荷重を負荷する構成であるため、
簡単な構成で試験片に衝撃荷重が加わるのを避けたり、
地震などによる装置外部からの振動を緩和できる。ま
た、低荷重の試験に使用すれば試験装置がより小型にな
り、コストが低く、設置場所が小さく、移動等が容易に
なるという効果がある。さらに、室温での試験に使用す
れば試験装置の設置場所を固定せずに試験が実施できる
という効果がある。As described above, according to the bending and static fatigue test apparatus for ceramics of the present invention, the load is applied to the test piece via the elastic body such as the spring and the rubber.
Avoid impact load on the test piece with a simple structure,
Vibrations from outside the device due to an earthquake can be mitigated. Further, when used for a low load test, the test device becomes smaller, the cost is low, the installation place is small, and the movement is easy. Further, if used for the test at room temperature, there is an effect that the test can be carried out without fixing the installation location of the test apparatus.
【図１】本発明の第１実施例によるセラミックスの曲げ
静疲労試験装置の側面図である。FIG. 1 is a side view of a bending static fatigue test apparatus for ceramics according to a first embodiment of the present invention.
【図２】図１の一点鎖線Ａで囲まれた部分のII方向矢視
拡大図である。2 is an enlarged view of the portion surrounded by the alternate long and short dash line A in FIG.
【図３】本発明の第２実施例によるセラミックスの曲げ
静疲労試験装置の側面図である。FIG. 3 is a side view of a bending static fatigue test apparatus for ceramics according to a second embodiment of the present invention.
【図４】図３のＢ−Ｂ’線断面のIV方向矢視拡大図であ
る。FIG. 4 is an enlarged view of a cross section taken along line BB ′ of FIG.
１ 荷重負荷手段 ２ 負荷治具 ３ 支持治具 ４ 試験片 ５ コイルばね（弾性体） ７ 荷重ピン ８ 支持ピン １４ 負荷ウェイト ６１ ゴム（弾性体） 1 load applying means 2 load jig 3 support jig 4 test piece 5 coil spring (elastic body) 7 load pin 8 support pin 14 load weight 61 rubber (elastic body)
Claims (4)
具と、 試験片に荷重ピンを介して荷重を負荷する負荷治具と、 前記負荷治具を通じて前記試験片に荷重を負荷する荷重
負荷手段を備えた装置において、 前記荷重負荷手段と前記負荷治具の間に介在する弾性体
を備えたことを特徴とするセラミックスの曲げ静疲労試
験装置。1. A support jig for supporting a test piece through a support pin, a load jig for applying a load to the test piece through a load pin, and a load for applying a load to the test piece through the load jig. A bending static fatigue test apparatus for ceramics, comprising an elastic body interposed between the load applying means and the load jig in an apparatus provided with a load means.
る請求項１のセラミックスの曲げ静疲労試験装置。2. The bending static fatigue test apparatus for ceramics according to claim 1, wherein the elastic body of claim 1 is a spring or rubber.
荷重が２０Ｋｇ以下である請求項１または請求項２のセ
ラミックスの曲げ静疲労試験装置。3. The bending static fatigue test apparatus for ceramics according to claim 1 or 2, wherein a total load applied to the test piece by the load jig of claim 1 is 20 kg or less.
る請求項１または請求項２または請求項３のセラミック
スの曲げ静疲労試験装置。4. The bending static fatigue test apparatus for ceramics according to claim 1, wherein the test temperature of the test piece according to claim 1 is room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP279193A JPH06207894A (en) | 1993-01-11 | 1993-01-11 | Bending static fatigue tester for ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP279193A JPH06207894A (en) | 1993-01-11 | 1993-01-11 | Bending static fatigue tester for ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06207894A true JPH06207894A (en) | 1994-07-26 |
Family
ID=11539189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP279193A Pending JPH06207894A (en) | 1993-01-11 | 1993-01-11 | Bending static fatigue tester for ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06207894A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101329648B1 (en) * | 2012-01-04 | 2013-11-14 | 주식회사 엠브로지아 | Fatigue testing apparatus |
| CN106198268A (en) * | 2016-07-13 | 2016-12-07 | 河南平高电气股份有限公司 | A kind of spring touch finger life testing method and frock |
| CN107884267A (en) * | 2017-11-30 | 2018-04-06 | 深圳三思纵横科技股份有限公司 | A kind of rotational support mechanism, fixture and ceramic test piece arrangement for measuring bending property |
| KR20220098902A (en) * | 2021-01-05 | 2022-07-12 | 한상님 | Specimen Testing Apparatus Having Multi-Loading Modes |
-
1993
- 1993-01-11 JP JP279193A patent/JPH06207894A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101329648B1 (en) * | 2012-01-04 | 2013-11-14 | 주식회사 엠브로지아 | Fatigue testing apparatus |
| CN106198268A (en) * | 2016-07-13 | 2016-12-07 | 河南平高电气股份有限公司 | A kind of spring touch finger life testing method and frock |
| CN107884267A (en) * | 2017-11-30 | 2018-04-06 | 深圳三思纵横科技股份有限公司 | A kind of rotational support mechanism, fixture and ceramic test piece arrangement for measuring bending property |
| KR20220098902A (en) * | 2021-01-05 | 2022-07-12 | 한상님 | Specimen Testing Apparatus Having Multi-Loading Modes |
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