JPS58169002A - Attaching method of welding type strain gage - Google Patents
Attaching method of welding type strain gageInfo
- Publication number
- JPS58169002A JPS58169002A JP5344782A JP5344782A JPS58169002A JP S58169002 A JPS58169002 A JP S58169002A JP 5344782 A JP5344782 A JP 5344782A JP 5344782 A JP5344782 A JP 5344782A JP S58169002 A JPS58169002 A JP S58169002A
- Authority
- JP
- Japan
- Prior art keywords
- strain
- groove
- temperature
- gauge
- measured
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
Abstract
Description
【発明の詳細な説明】 本発明は、物体の表面に溶接して取り付けて。[Detailed description of the invention] The present invention can be attached by welding to the surface of an object.
物体に作用しているひずみを測定する溶接型ストレンゲ
ージの取り付は方法に関するものである。The installation of a welded strain gauge for measuring the strain acting on an object relates to a method.
溶接型ストレンゲージは主として高温の金属物体の歪計
測に使用するストレンゲージであるが、第１図に溶接型
ストレンゲージの従来の方法によって取り付けた外観図
を示しである。A welded strain gauge is a strain gauge mainly used to measure strain on high-temperature metal objects, and FIG. 1 shows an external view of a welded strain gauge installed by a conventional method.
溶接型ストレンゲージは薄い金属板からなるベース２に
溶接にて固定した感歪部ｌと、感歪部１の抵抗値変化を
外部へ取り出すリード線３と、リード線３を機械的に”
あるいは耐熱的に丈夫なように保護する保護管４とから
構成されるもので、金属材からなる被計測物体５にこの
溶接型ストレンゲージを取付けるには、ベース２を歪計
測場所に当てがい２点溶接にて取り付ける。第１図には
点溶接跡６を図示している。A welded strain gauge has a strain-sensitive part 1 fixed to a base 2 made of a thin metal plate by welding, a lead wire 3 for taking out the resistance change of the strain-sensitive part 1 to the outside, and a mechanically connected lead wire 3.
Alternatively, it consists of a protective tube 4 that protects it from heat resistance and toughness.To attach this welded strain gauge to an object to be measured 5 made of a metal material, place the base 2 at the strain measurement location. Attach by spot welding. In FIG. 1, spot weld marks 6 are illustrated.
溶接型ストレンゲージを取付けた状態の感歪部ｌの拡大
縦断面図を第２図に示しである。感歪部ｌはその内部に
歪を恩知する金属抵抗線１ａを内蔵しており、Ｍｇｏ（
酸化マグネ７ア）粉末等の電気絶縁材を充てんしである
。FIG. 2 shows an enlarged longitudinal cross-sectional view of the strain-sensitive portion 1 with a welded strain gauge attached thereto. The strain sensing part l has a built-in metal resistance wire 1a that senses strain inside it, and Mgo(
Magnetooxide 7a) Filled with electrical insulating material such as powder.
被計測物体５にはベース２を点溶接することによって取
り付けられているが９通常感歪部１の外径は０．５ Ｔ
Ｒ５ｌ〜１．０あるため取付部表面からその分たけ突き
出した状態になる。The base 2 is attached to the object to be measured 5 by spot welding, and the outer diameter of the normal strain-sensitive part 1 is 0.5 T.
Since R5l is 1.0, it protrudes by that amount from the mounting surface.
いまこの被計測物体５が高温ガス流８の中にあるとすれ
ば感歪部１は取付部表面から突き出ていることになり、
（１）高温ガス流８による熱伝達が良く行なわれる。（
２）感歪部ｌの内部はＭｇＯ粉末が充てんしであるため
、感歪部１自身の熱伝導は悪い。（３）感歪部１はベー
ス２との接触面積がその外径に比して比較的小さいため
、被計測物体５との熱伝導が悪い。等の理由で感歪部１
の温度は被計測物体５の温度よりも高温ガス流８の温度
に近い値となる。If the object to be measured 5 is now in the high-temperature gas flow 8, the strain-sensitive part 1 will protrude from the surface of the mounting part.
(1) Heat transfer by the high-temperature gas flow 8 is well performed. (
2) Since the inside of the strain sensitive part 1 is filled with MgO powder, the heat conduction of the strain sensitive part 1 itself is poor. (3) Since the contact area of the strain sensing portion 1 with the base 2 is relatively small compared to its outer diameter, heat conduction with the object to be measured 5 is poor. Due to such reasons, the distortion part 1
The temperature is closer to the temperature of the high-temperature gas flow 8 than the temperature of the object to be measured 5.
溶接型ストレノゲージは本来高温の歪計測を目的として
製作されているため構成素材は耐熱的に吟味して使用さ
れているが、それでも振動応力等の動的歪針側に対して
はその使用限界は現状では、８５０℃程度までである。Welded strain gauges are originally manufactured for the purpose of high-temperature strain measurement, so the constituent materials are carefully considered for heat resistance, but there are still limits to their use against dynamic strain needles such as vibration stress. Currently, the temperature is up to about 850°C.
なお、静的歪計測に対してはもっと使用限界が下り通常
５５０℃程度１でとされている。Note that for static strain measurement, the usage limit is lower and is usually about 550°C.
一方最近ガスタービン、ボイラ、その他高温ガスを使用
する機種の高温ガス中における歪計１１１１１が増加し
つつあり、ガス温度が１０００℃を超えるケースがざら
にある。この様に溶接型ストン／ゲージの耐熱限界８５
０℃以上のガス体の場合は千６Ｆ測ができないか、ある
いはわざわざガス温度を一時的に８５０℃以下に下げて
歪計測を行わなければならない不都合があった。On the other hand, recently, the number of strain gauges 11111 in high-temperature gas in gas turbines, boilers, and other models that use high-temperature gas has been increasing, and there are many cases where the gas temperature exceeds 1000°C. In this way, the heat resistance limit of welded stone/gauge is 85
In the case of a gas body with a temperature of 0° C. or higher, it is not possible to measure 1,600 F, or it is inconvenient that the gas temperature must be temporarily lowered to 850° C. or lower to measure strain.
本発明はこれらの欠点を排除するものであっ。The present invention eliminates these drawbacks.
て、溶接型ストン／ゲージを歪計測対象物に点溶接する
に際５．歪計測物体の計測点の場所に。5. When spot welding the welding type stone/gauge to the strain measurement object. At the location of the measurement point of the strain measurement object.
浴接型ストレノゲージの突起した感歪部に合せて予め溝
切りをしておき、上記溝内にストレノケーン感歪部を挿
入して、ストレノゲージのベースを点溶接にて取付ける
ので、高温ガス流に晒される物体の歪を計測する場合で
あっても。A groove is cut in advance to match the protruding strain-sensing part of the bath-contact type strain gauge, the strain-sensing part of the strain gauge is inserted into the groove, and the base of the strain gauge is attached by spot welding, so it is not exposed to high-temperature gas flow. Even when measuring the strain of an object that is
その感歪部の温度が高温ガス流の温度の値よりも、ゲー
ジを取付けた物体の温度の値に近くなるようにすること
ができる。The temperature of the strain sensitive part can be made closer to the temperature of the object to which the gauge is attached than the temperature of the hot gas flow.
以下本命°明による溶接型ストレノゲージの取４１法を
第３図ないし第５図を参照しながら説明する。Hereinafter, the 41 method of manufacturing a welded strain gauge according to Honmei will be explained with reference to FIGS. 3 to 5.
第３図において５は被計測物体であって歪計測場所を示
しており、その表面に溶接型ストレノゲージの突起した
感歪部ｌに合った溝１０をまず切る。In FIG. 3, reference numeral 5 denotes the object to be measured, which is the place where the strain is measured.First, a groove 10 is cut on the surface of the object to fit the protruding strain-sensitive portion 1 of the welded strain gauge.
次に、溝切りした被計測物体５の溝ｌＯの部分に溶接型
ストン／ゲージの感歪部】を挿入し。Next, insert the strain sensitive part of the welded stone/gauge into the groove lO of the grooved object 5 to be measured.
ベース２の部分を点溶接して固定する。Fix the base 2 by spot welding.
従って、被計測物体５の表面から突き出している部分は
ベース２の厚み相当分のみとなっており高温ガス流８に
直接暴露される部分は、このベース２のみである。Therefore, the only part that protrudes from the surface of the object to be measured 5 is the thickness of the base 2, and the only part that is directly exposed to the high-temperature gas flow 8 is the base 2.
第５図は溶接型ストン／ゲージを本発明の取付法によっ
てタービン翼１１に取付けた外観図であり、その目的は
翼振動応力を計測するためである。FIG. 5 is an external view of a welded stone/gauge attached to a turbine blade 11 by the attachment method of the present invention, the purpose of which is to measure blade vibration stress.
なお感歪部分と同様な理由でリード線３および保護管４
もタービン翼１１に加工した溝の内部に埋め込んであり
、翼１１表面に突き出さない形状となっている。In addition, for the same reason as the distortion part, the lead wire 3 and protection tube 4
The grooves are also embedded inside the grooves machined in the turbine blade 11 and have a shape that does not protrude from the surface of the blade 11.
もちろんこの溝内のリード線３などは図示しなし）が１
回転中に遠心力等によって移動したり。Of course, the lead wire 3 in this groove is not shown).
It moves due to centrifugal force, etc. during rotation.
溝外部−＼飛び出さな様に接着剤を充てんしたり。Outside the groove - Fill with adhesive to prevent it from popping out.
あるいは溝外部を金属薄板でカバーして点溶接する等、
適当なる方法でもって強固に固定しである。Alternatively, cover the outside of the groove with a thin metal plate and spot weld it.
It must be firmly fixed using an appropriate method.
本発明の方法によって第４図に示す如く被計測物体５に
溝切りした溝１ｏの内側に溶接型ストン／ケージの感歪
部１を位置させた場合にはストレ／ケー７取付部の表面
から突き出している部分はストレノゲージのベース２の
厚み相当分たけであり、しかもこのベース２の厚みは通
帛０． Ｉ ＩＩＩＪＩ程度でしがないため極く僅がし
か突き出ていないと言える。When the strain-sensitive part 1 of the welded type stone/cage is located inside the groove 1o cut in the object to be measured 5 as shown in FIG. The protruding part is equivalent to the thickness of the base 2 of the streno gauge, and the thickness of the base 2 is 0. It can be said that it is only slightly protruding because it is only about I III JI.
したがって高温ガス流８によって溶接型ストレンゲ−／
に熱伝達される熱量は、ゲージの取イ１場所の近くの部
分の被計測物体５と大差ない。Therefore, the hot gas flow 8 causes the welding type strainer/
The amount of heat transferred to the measured object 5 is not much different from that of the measured object 5 in the vicinity of the gauge takeout 1.
−また感歪部１の形状に合せてｍ１０の形状が加工され
ているから、感歪部１と被計測物体５との接触面積は大
きく、その接触面における熱伝導は良く行なわれ、した
がって感歪部ｌの温度は高温ガス流８の温度よりも被計
測物体５の温度の方により近い値でおることは自明であ
る。- Also, since the shape of m10 is machined to match the shape of the strain sensing part 1, the contact area between the strain sensing part 1 and the object to be measured 5 is large, and heat conduction on the contact surface is good, so It is obvious that the temperature of the strained portion l is closer to the temperature of the object to be measured 5 than the temperature of the high-temperature gas flow 8.
なお、一般に高温ガスの温度よりも被計測物体の温度の
方が低い場合の歪計測が多く、また第５図に示す場合も
この様なケースを対象とする訳であるが、この場合に溶
接型ストレンゲーンの温度の使用限界は高温ガスの温度
よりも被計測物体の温度によって定めることが可能とな
るＯ
したがって、被計測物体１１の温度が溶接型ストレノゲ
ージの使用温度限界（現状では約８５０℃）以内であれ
ば、高温ガスの温度がそれより高くても一向に差し支え
なく歪計側を実施できる利点がある。In general, strain measurements are often performed when the temperature of the object to be measured is lower than the temperature of the high-temperature gas, and the case shown in Figure 5 is also intended for such cases. The operating temperature limit of the type strain gauge can be determined by the temperature of the object to be measured rather than the temperature of the high-temperature gas. ), there is an advantage that the strain gauge side can be operated without any problem even if the temperature of the high-temperature gas is higher than that.
一方９本発明の取付法によって取り付けた溶接型ストレ
ノゲージを高速流体中の歪−計測に適用すると、感歪部
１が突き出さない形状に溶接型ストし／ゲージを取付け
ることができるので。On the other hand, if the welded strain gauge attached by the mounting method of the present invention is applied to strain measurement in high-speed fluid, the welded strain gauge can be attached in a shape where the strain sensitive part 1 does not protrude.
感イ≧部１が流体によって外力を受けて損傷することは
なく、また流体の流れも乱されることはなくなる利小が
ある。Sensing I≧There is an advantage that the part 1 is not damaged by external force from the fluid, and the flow of the fluid is not disturbed.
第１図は従来の方法でゲージを取り付けた図。
第２図は第１図のト」断面図、第３図は物体表面ＶＣ＊
切りした溝の図、第４図は本発明の塩１１法によってゲ
ージを取り付けた図、第５図は＋ｌＩＩＩｗ例を示す図
である。
１、感歪部、２：ベース、３：リード線。
４：保護筒、５：被計測物体、８：高温ガス流、１０：
溝Figure 1 shows the gauge installed using the conventional method. Figure 2 is a sectional view of Figure 1, Figure 3 is the object surface VC*
FIG. 4 is a diagram showing a cut groove, FIG. 4 is a diagram showing a gauge attached by the salt 11 method of the present invention, and FIG. 5 is a diagram showing a +lIIIw example. 1. Distortion sensitive section, 2. Base, 3. Lead wire. 4: Protective tube, 5: Measured object, 8: High temperature gas flow, 10:
groove
Claims (1)
際し、歪計測物体の計測点の場所に。 溶接型ストレンゲーンの突起した感歪部に合せて予め溝
切りをしておき、上記溝内にストレノゲージ感歪部を挿
入して、ストレンゲージのベースを点溶接にて取付ける
ことを特徴とする溶接型ストトンゲージの取付法。[Claims] When spot welding a welding type strain gauge to the strain measurement object, at the measurement point location of the strain measurement object. Welding characterized in that a groove is cut in advance in line with the protruding strain sensitive part of the welding type strain gauge, the strain gauge sensitive part is inserted into the groove, and the base of the strain gauge is attached by spot welding. How to install a type Stoton gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5344782A JPS58169002A (en) | 1982-03-31 | 1982-03-31 | Attaching method of welding type strain gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5344782A JPS58169002A (en) | 1982-03-31 | 1982-03-31 | Attaching method of welding type strain gage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58169002A true JPS58169002A (en) | 1983-10-05 |
Family
ID=12943101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5344782A Pending JPS58169002A (en) | 1982-03-31 | 1982-03-31 | Attaching method of welding type strain gage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58169002A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100956847B1 (en) | 2007-08-23 | 2010-05-11 | 한국기초과학지원연구원 | Method for measuring stress of body |
| CN103604627A (en) * | 2013-12-09 | 2014-02-26 | 东南大学 | Problematic cable/concentrated load/generalized displacement progressive recognition method on basis of hybrid monitoring |
| CN103604635A (en) * | 2013-12-09 | 2014-02-26 | 东南大学 | Damaged cable/concentrated load recognition method on basis of generalized displacement hybrid monitoring |
| CN103604647A (en) * | 2013-12-09 | 2014-02-26 | 东南大学 | Damaged cable/concentrated load recognition method on basis of linear displacement angle monitoring |
| CN103616194A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Progressive identifying method for damaged cable concentrated loads and support angular displacement based on angle monitoring |
| CN103616208A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Identifying method for problem cable and concentrated loads based on angle monitoring |
| CN103616195A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Identifying method for damaged cable and concentrated loads based on mixture monitoring in time of angular displacement |
| CN103616193A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Hybrid-monitoring angular displacement identification method for defective cable and concentrated loads |
| CN103616245A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Progressive concentrated load support angular displacement identification method for damaged cable in process of cable force monitoring |
| CN103616219A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Hybrid-monitoring generalized displacement identification method for damaged cable and concentrated loads |
| CN103616223A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Method for identifying concentrated loads of damaged cables in linear displacement process based on strain monitoring |
| CN103616243A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Strain-monitoring damaged cable centralized load generalized displacement progressive recognition method |
| CN103616230A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Damaged cables in process of cable force monitoring and progressive concentrated load identification method |
| CN103616217A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Progressive identifying method for problem cable and concentrated loads based on mixture monitoring in time of angular displacement |
| CN103616202A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Angular displacement strain monitoring identification method for defective cable and concentrated loads |
| CN103616237A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Method for recognizing concentrated loads of damaged cable under condition of generalized displacement based on angle monitoring |
| CN103616004A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Strain-monitoring damaged cable centralized load angular displacement recognition method |
| CN103616224A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Damaged cable and concentrated load recognition method based on cable force monitoring |
| CN103630390A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Space coordinate monitoring based damaged cable and concentrated load identification method |
| CN103630412A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Method for progressively identifying concentrated loads of problematic cables by means of monitoring angles during angular displacement |
| CN103630410A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Damaged cable and concentrated load progressive identification method based on generalized displacement mixed monitoring |
| CN103630409A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Cable force monitoring damaged cable concentrated load support corner displacement recognition method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4322926Y1 (en) * | 1965-05-04 | 1968-09-27 |
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1982
- 1982-03-31 JP JP5344782A patent/JPS58169002A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4322926Y1 (en) * | 1965-05-04 | 1968-09-27 |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100956847B1 (en) | 2007-08-23 | 2010-05-11 | 한국기초과학지원연구원 | Method for measuring stress of body |
| CN103604627A (en) * | 2013-12-09 | 2014-02-26 | 东南大学 | Problematic cable/concentrated load/generalized displacement progressive recognition method on basis of hybrid monitoring |
| CN103604635A (en) * | 2013-12-09 | 2014-02-26 | 东南大学 | Damaged cable/concentrated load recognition method on basis of generalized displacement hybrid monitoring |
| CN103604647A (en) * | 2013-12-09 | 2014-02-26 | 东南大学 | Damaged cable/concentrated load recognition method on basis of linear displacement angle monitoring |
| CN103616194A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Progressive identifying method for damaged cable concentrated loads and support angular displacement based on angle monitoring |
| CN103616208A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Identifying method for problem cable and concentrated loads based on angle monitoring |
| CN103616195A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Identifying method for damaged cable and concentrated loads based on mixture monitoring in time of angular displacement |
| CN103616193A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Hybrid-monitoring angular displacement identification method for defective cable and concentrated loads |
| CN103616245A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Progressive concentrated load support angular displacement identification method for damaged cable in process of cable force monitoring |
| CN103616219A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Hybrid-monitoring generalized displacement identification method for damaged cable and concentrated loads |
| CN103616223A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Method for identifying concentrated loads of damaged cables in linear displacement process based on strain monitoring |
| CN103616243A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Strain-monitoring damaged cable centralized load generalized displacement progressive recognition method |
| CN103616230A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Damaged cables in process of cable force monitoring and progressive concentrated load identification method |
| CN103616217A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Progressive identifying method for problem cable and concentrated loads based on mixture monitoring in time of angular displacement |
| CN103616202A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Angular displacement strain monitoring identification method for defective cable and concentrated loads |
| CN103616237A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Method for recognizing concentrated loads of damaged cable under condition of generalized displacement based on angle monitoring |
| CN103616004A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Strain-monitoring damaged cable centralized load angular displacement recognition method |
| CN103616224A (en) * | 2013-12-09 | 2014-03-05 | 东南大学 | Damaged cable and concentrated load recognition method based on cable force monitoring |
| CN103630390A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Space coordinate monitoring based damaged cable and concentrated load identification method |
| CN103630412A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Method for progressively identifying concentrated loads of problematic cables by means of monitoring angles during angular displacement |
| CN103630410A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Damaged cable and concentrated load progressive identification method based on generalized displacement mixed monitoring |
| CN103630409A (en) * | 2013-12-09 | 2014-03-12 | 东南大学 | Cable force monitoring damaged cable concentrated load support corner displacement recognition method |
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