JPH0137687B2 - - Google Patents
Info
- Publication number
- JPH0137687B2 JPH0137687B2 JP59190129A JP19012984A JPH0137687B2 JP H0137687 B2 JPH0137687 B2 JP H0137687B2 JP 59190129 A JP59190129 A JP 59190129A JP 19012984 A JP19012984 A JP 19012984A JP H0137687 B2 JPH0137687 B2 JP H0137687B2
- Authority
- JP
- Japan
- Prior art keywords
- sample
- jig
- platinum
- modulus
- internal friction
- 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
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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
-
- 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
- Physics & Mathematics (AREA)
- Electromagnetism (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 Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
(イ) 技術分野
本発明はセラミツクス、金属、木材等のヤング
率、内部摩擦を測定する方法及び装置に関するも
ので測定試料が導電性が無くても広い温度範囲
（−250℃〜1300℃）で測定し得るものである。Detailed Description of the Invention (a) Technical Field The present invention relates to a method and apparatus for measuring Young's modulus and internal friction of ceramics, metals, wood, etc., and can be applied over a wide temperature range (- 250°C to 1300°C).
(ロ) 従来技術の問題点
従来のヤング率測定法として第２図に示すよう
な試料１を２本の白金線７によつて吊下げて共振
させる方法がある。１０は加熱用炉体、８がシユ
ーカー、９が検出器である。この方法では吊下用
白金線の共振が生じ、測定試料の共振周波数が見
つけがたく、白金線が太いためそこで生ずる振動
のロスが大きい。又吊下げている点が振動の節と
なつているため試料を振動させる効率が悪くヤン
グ率内部摩擦の測定値の誤差が大きい。又この方
法では、炉体上部に孔１０′が開いているため雰
囲気の調整がむつかしい。(B) Problems with the Prior Art As a conventional method for measuring Young's modulus, there is a method as shown in FIG. 2 in which a sample 1 is suspended by two platinum wires 7 and resonated. 10 is a heating furnace body, 8 is a shaker, and 9 is a detector. In this method, resonance occurs in the hanging platinum wire, making it difficult to find the resonant frequency of the measurement sample, and since the platinum wire is thick, there is a large vibration loss. Furthermore, since the hanging point is a node of vibration, the efficiency of vibrating the sample is poor and the error in the measured value of Young's modulus internal friction is large. In addition, in this method, since the hole 10' is opened in the upper part of the furnace body, it is difficult to adjust the atmosphere.
(ハ) 発明の開示
固体材料のヤング率及び内部摩擦を共振法で測
定する場合、いかに試料を効率よく振動させるか
が重要であり上記従来法の問題を解決すべく種々
検討した結果本発明に到つた。(c) Disclosure of the Invention When measuring the Young's modulus and internal friction of a solid material by the resonance method, it is important to vibrate the sample efficiently.As a result of various studies to solve the problems of the conventional method described above, the present invention has been developed. It has arrived.
本発明の特徴は、板状測定試料の一端面に白金
ペースト塗布等によつて白金電極を付与すること
にある。これによつて非導電性のセラミツクス、
木材プラスチツク等の測定も可能になつた。 A feature of the present invention is that a platinum electrode is provided on one end surface of a plate-shaped measurement sample by applying platinum paste or the like. This results in non-conductive ceramics,
It has also become possible to measure materials such as wood and plastics.
第３図は本発明の測定に用いる試料１の斜視図
であり、その端面に白金電極１１を付与する。こ
の試料を白金電極を下面として２つの凸出部を有
する治具２上に載せる。治具の凸出部には各々白
金線７が設けられ、試料の合金電極１２の部分が
白金線７の上に載るようにする。３はアース側の
線が重なる個所である。第４図は測定試料が治具
の上に載つた状態の上面図であり、これを第１図
に示す如く、真空排出口又は雰囲気ガス導入口４
を有する容器３内に設置する。試料が２本の白金
線の上に載つた場合、試料上の白金電極が２本の
白金線のうちアース側の１本と接触し、更に治具
上の駆動電極８の上にくるようにする。駆動電極
８と試料面上の白金電極との間に交番電圧を交番
電圧源５によつて印加し試料を振動させる。この
時、電極を試料の中央に置くことによつて振動振
巾が約２倍となり非常に効率よい振動が生じる。 FIG. 3 is a perspective view of the sample 1 used in the measurement of the present invention, and a platinum electrode 11 is provided on the end face thereof. This sample is placed on a jig 2 having two protrusions with the platinum electrode on the bottom surface. A platinum wire 7 is provided on each of the protruding parts of the jig so that the alloy electrode 12 portion of the sample rests on the platinum wire 7. 3 is the location where the ground side wires overlap. FIG. 4 is a top view of the measurement sample placed on the jig, and as shown in FIG.
installed in a container 3 having a When the sample is placed on the two platinum wires, make sure that the platinum electrode on the sample is in contact with one of the two platinum wires on the ground side and is also on top of the drive electrode 8 on the jig. do. An alternating voltage is applied between the drive electrode 8 and the platinum electrode on the sample surface by an alternating voltage source 5 to vibrate the sample. At this time, by placing the electrode in the center of the sample, the vibration amplitude is approximately doubled, resulting in very efficient vibration.
容器３内は外部加熱により特定温度に維持する
ことにより1300℃まで測定することができる。低
温の場合は液体ヘリウムを使用し、−250℃まで可
能である。又測定雰囲気としては真空、並びに
Ar、N2などの非酸化性雰囲気にすることができ
る。 By maintaining the inside of the container 3 at a specific temperature by external heating, measurements can be made up to 1300°C. For low temperatures, liquid helium is used and temperatures down to -250°C are possible. Also, the measurement atmosphere is vacuum and
A non-oxidizing atmosphere such as Ar or N2 can be used.
治具２は高温に耐えられるようにAl2O3やBN
製とする。試料１の大きさは、１×５×20mm〜３
×15×150mmの範囲内であるが治具の寸法を変え
ることによつて他の任意の大きさにすることがで
きる。 Jig 2 is made of Al 2 O 3 or BN to withstand high temperatures.
Manufactured by The size of sample 1 is 1 x 5 x 20 mm ~ 3
Although it is within the range of x15 x 150 mm, it can be made to any other size by changing the dimensions of the jig.
次に実施例によつて説明する。 Next, an example will be explained.
実施例
Al2O3及びSi3N4焼結体で1.5mm×10mm×60mmの
大きさに加工し、その一端面に白金ペーストを塗
布焼付け第１図に示す装置を用いて常温及び、高
温でのヤング率、内部摩擦を測定した。その結果
を第５図に示す。白丸Ｅ１、黒丸Ｅ２は各々
Al2O3、Si3N4のヤング率、白角Ｑ２、黒角Ｑ１
は各々Al2O3、Si3N4の内部摩擦である。Example A sintered body of Al 2 O 3 and Si 3 N 4 was processed into a size of 1.5 mm x 10 mm x 60 mm, and platinum paste was applied to one end of the body and baked using the equipment shown in Figure 1 at room temperature and high temperature. Young's modulus and internal friction were measured. The results are shown in FIG. White circle E1 and black circle E2 are respectively
Young's modulus of Al 2 O 3 , Si 3 N 4 , white angle Q2, black angle Q1
are the internal friction of Al 2 O 3 and Si 3 N 4 , respectively.
第１図は本発明の測定装置の正面断面図、第２
図は従来の測定法の説明図、第３図は本発明の測
定に用いる試料の斜視図、第４図は本発明の試料
のセント状態を示す上面図及び第５図は本発明の
測定法及び装置による実施例のヤング率、内部摩
擦の測定結果である。
１：試料、２：治具、３：容器、４：排気口、
又は導入口、５：交番電圧源、６：熱電対、７：
白金線、８：駆動電極、９：検出器、１０：炉
体、１０′：空孔、１１：白金電極、Ｅ１：
Al2O3ヤング率、Ｅ２：Si3N4ヤング率、Ｑ１：
Si3N4内部摩擦、Ｑ２：Al2O3内部摩擦。
FIG. 1 is a front sectional view of the measuring device of the present invention, and FIG.
The figure is an explanatory diagram of the conventional measurement method, Figure 3 is a perspective view of a sample used in the measurement of the present invention, Figure 4 is a top view showing the cent state of the sample of the present invention, and Figure 5 is the measurement method of the present invention. and the measurement results of Young's modulus and internal friction of the example using the apparatus. 1: sample, 2: jig, 3: container, 4: exhaust port,
or inlet, 5: alternating voltage source, 6: thermocouple, 7:
Platinum wire, 8: Drive electrode, 9: Detector, 10: Furnace body, 10': Hole, 11: Platinum electrode, E1:
Al 2 O 3 Young's modulus, E2: Si 3 N 4 Young's modulus, Q1:
Si 3 N 4 internal friction, Q2: Al 2 O 3 internal friction.
Claims (1)
の試料を特定間隔をもつて白金線が装着された凸
出する部分を有する治具上に載せ、該板状試料の
白金電極と駆動用電極との間に交番電圧を印加し
て共振動せしめ、周囲温度を変化せしめて測定す
ることを特徴とするヤング率及び内部摩擦の測定
方法。 ２ 試料を共振させる際の周波数が50Hz〜20000
Hzの範囲であることを特徴とする特許請求の範囲
第１項記載のヤング率及び内部摩擦の測定方法。 ３ 真空排気口又は雰囲気ガス導入口を有する加
熱手段を具備する容器内に板上固体試料を載せる
耐熱性治具が設置され、該治具には白金線が上面
に装着された凸出部があり、該治具中には温度測
定のための熱電対が装着され、上記治具に装着さ
れた白金線を通じ交番電圧源が設けられ、板状固
体試料の一端面には白金電極が設けられているこ
とを特徴とするヤング率及び内部摩擦の測定装
置。[Claims] 1. A platinum electrode is attached to one end surface of a plate-like solid sample, and the sample is placed on a jig having a protruding part to which platinum wires are attached at specific intervals, and the plate-like A method for measuring Young's modulus and internal friction, characterized by applying an alternating voltage between a platinum electrode of a sample and a driving electrode to cause resonance, and measuring by changing ambient temperature. 2 The frequency when making the sample resonate is 50Hz to 20000
2. The method for measuring Young's modulus and internal friction according to claim 1, wherein the measurement is in the Hz range. 3. A heat-resistant jig for placing a solid sample on a plate is installed in a container equipped with a heating means having a vacuum exhaust port or an atmospheric gas inlet, and the jig has a protruding portion on the top surface of which a platinum wire is attached. A thermocouple for temperature measurement is installed in the jig, an alternating voltage source is provided through a platinum wire attached to the jig, and a platinum electrode is provided on one end surface of the plate-shaped solid sample. A device for measuring Young's modulus and internal friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59190129A JPS6166945A (en) | 1984-09-10 | 1984-09-10 | Method and device for measuring young's modulus and internal friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59190129A JPS6166945A (en) | 1984-09-10 | 1984-09-10 | Method and device for measuring young's modulus and internal friction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6166945A JPS6166945A (en) | 1986-04-05 |
| JPH0137687B2 true JPH0137687B2 (en) | 1989-08-09 |
Family
ID=16252873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59190129A Granted JPS6166945A (en) | 1984-09-10 | 1984-09-10 | Method and device for measuring young's modulus and internal friction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6166945A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0820343B2 (en) * | 1990-02-21 | 1996-03-04 | 勝 坂田 | Method and apparatus for measuring elastic modulus of solid material by impact sound |
| JPH082597Y2 (en) * | 1990-10-29 | 1996-01-29 | 京都電子工業株式会社 | Dynamic elastic modulus measuring device |
-
1984
- 1984-09-10 JP JP59190129A patent/JPS6166945A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6166945A (en) | 1986-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |