JP2003302332A - Measuring gage and method of using the same - Google Patents
Measuring gage and method of using the sameInfo
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- JP2003302332A JP2003302332A JP2002103961A JP2002103961A JP2003302332A JP 2003302332 A JP2003302332 A JP 2003302332A JP 2002103961 A JP2002103961 A JP 2002103961A JP 2002103961 A JP2002103961 A JP 2002103961A JP 2003302332 A JP2003302332 A JP 2003302332A
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- attached
- sensor
- gauge
- measuring gauge
- curved surface
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】請求項に係る発明は、ひずみ
ゲージなどのように機械や構造物等における各種部材の
表面に貼り付けられてその部材の状態を測定する各種測
定用ゲージ、およびそのようなゲージの使用方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The claimed invention relates to various measuring gauges, such as strain gauges, which are attached to the surface of various members such as machines and structures to measure the state of the members, and the like. It is about how to use different gauges.
【０００２】[0002]
【従来の技術】機械や構造物中の部材（被測定部材）に
ついて応力やひずみ、温度、疲労損傷度などを測定する
場合、当該部材にシート状の測定用ゲージを貼り付ける
ことがある。測定のためのそのようなゲージは平面状に
製作されていて、通常は平面部分に貼り付けて使用す
る。測定対象である部材の表面が曲面である場合には、
したがってそのゲージを、その部材表面に沿うように曲
げたうえ貼り付けている。2. Description of the Related Art When measuring stress, strain, temperature, degree of fatigue damage, etc. of a member (measured member) in a machine or a structure, a sheet-shaped measuring gauge may be attached to the member. Such gauges for measurement are manufactured in a flat shape, and are usually stuck on a flat surface for use. If the surface of the member to be measured is a curved surface,
Therefore, the gauge is bent and attached along the surface of the member.
【０００３】上記のような測定用ゲージの一種として、
疲労センサー（疲労損傷検出素子）がある。船舶や橋梁
などの一部に貼り付けて、そこに作用した繰返しひずみ
の程度などを検出し疲労損傷度を推定するためのもの
で、たとえば特開２００１−２８１１２０号公報に記載
されている。As a kind of the above-mentioned measuring gauge,
There is a fatigue sensor (fatigue damage detection element). It is attached to a part of a ship, a bridge or the like to detect the degree of cyclic strain acting on it and to estimate the degree of fatigue damage, and is described in, for example, JP 2001-281120 A.
【０００４】同公報等に示された疲労センサーの概要
は、図１４（ａ）・（ｂ）に示すとおりである。すなわ
ち、スリット３をあらかじめ形成された平らな金属箔２
Ｚを、当該スリット３をはさむ両側の固着部４・４にて
ベース材５の表面上に固着することにより、疲労センサ
ー１Ｚを構成する。そしてこのようなセンサー１Ｚを、
ベース材５の底面（金属箔２Ｚのない側の面）に接着剤
層（接合部６）を設けることにより部材Ｍ上に貼り付け
る。金属箔２Ｚをベース材５に重ねた状態で部材Ｍに貼
り付けるのは、もし金属箔２Ｚを直接に部材Ｍ上に貼り
付けるとすれば、固着部４・４の間隔などを一律に定め
るという精度の要る煩わしい作業が貼り付けの現場に求
められるからである。図１４のように部材Ｍ上に疲労セ
ンサー１Ｚを貼り付けると、当該部材Ｍに生じるひずみ
振幅は、ベース材５を介して金属箔２Ｚに伝達され、ひ
ずみの繰り返しとともにスリット３の先端からき裂Ｘを
進展させる。進展したき裂Ｘの長さから、当該部材Ｍの
疲労損傷度等を推定することができる。なお、スリット
３を含む部分では金属箔２Ｚを薄く（つまり減厚部２ａ
に）形成し、それにより、部材Ｍに生じたひずみによっ
てスリット３の付近に集中的に応力を発生させ、部材Ｍ
の疲労損傷度を高感度・高精度に測定できるようにして
いる。The outline of the fatigue sensor shown in the publication is as shown in FIGS. 14 (a) and 14 (b). That is, the flat metal foil 2 with the slits 3 formed in advance
By fixing Z on the surface of the base material 5 at the fixing portions 4 on both sides sandwiching the slit 3, the fatigue sensor 1Z is configured. And such a sensor 1Z
The base material 5 is attached on the member M by providing an adhesive layer (joint portion 6) on the bottom surface (the surface on the side without the metal foil 2Z). The metal foil 2Z is attached to the member M in a state of being superposed on the base material 5. If the metal foil 2Z is directly attached to the member M, the intervals between the fixing portions 4 and 4 are uniformly set. This is because a laborious task that requires precision is required at the site of pasting. When the fatigue sensor 1Z is attached on the member M as shown in FIG. 14, the strain amplitude generated in the member M is transmitted to the metal foil 2Z through the base material 5, and the crack X is generated from the tip of the slit 3 as the strain is repeated. Make progress. From the length of the crack X that has propagated, the degree of fatigue damage of the member M can be estimated. The metal foil 2Z is thin (that is, the reduced thickness portion 2a is included in the portion including the slit 3).
In this way, the strain generated in the member M causes concentrated stress to be generated in the vicinity of the slit 3,
It is possible to measure the degree of fatigue damage in a highly sensitive and accurate manner.
【０００５】[0005]
【発明が解決しようとする課題】平面状に製作された測
定用ゲージを、曲げたうえで部材表面（曲面部分）に貼
り付ける場合、ゲージにできる曲面と部材表面の曲面と
がぴったりとは沿いにくいため、ゲージの付きが悪くて
部材表面から剥がれやすいことがある。ゲージが硬かっ
たり脆い物でできていたりする場合には、強く曲げよう
とするときゲージが折損してしまうこともある。When a flat measuring gauge is attached to a member surface (curved surface portion) after being bent, the curved surface of the gauge and the curved surface of the member are closely aligned. Since it is difficult, the gauge may not adhere well and may easily peel off from the surface of the member. If the gauge is hard or made of fragile material, the gauge may break when trying to bend it strongly.
【０００６】とくに、上に記載した疲労センサーの場
合、金属箔とベース材とが２層に重なった構成を有して
いるため、容易には曲げにくく、折損しやすいとか部材
表面から剥がれやすいとかの不都合が一層に発生しやす
い。また、疲労センサーは、引張りの応力場において金
属箔中のスリットからき裂の進展することが測定の基本
であるが、曲げ方が不適当であると金属箔に引張りの応
力場が生じなくなる（そのためき裂が進展し難くなる）
恐れもある。In particular, in the case of the fatigue sensor described above, since the metal foil and the base material are laminated in two layers, it is difficult to bend, easily broken or easily peeled off from the surface of the member. Is more likely to occur. In addition, the fatigue sensor is the basis of measurement that cracks propagate from the slit in the metal foil in the tensile stress field, but if the bending method is inappropriate, the tensile stress field will not occur in the metal foil (for that reason) (It becomes difficult for cracks to propagate)
There is a fear.
【０００７】請求項の発明は、このような点を考慮し、
被測定部材のうち曲面部分の表面に適切に貼り付けるこ
とができる測定用ゲージとその使用方法とを提供しよう
とするものである。The invention of the claim considers such a point,
An object of the present invention is to provide a measuring gauge that can be appropriately attached to the surface of a curved surface portion of a member to be measured and a method of using the measuring gauge.
【０００８】[0008]
【課題を解決するための手段】請求項１に記載した測定
用ゲージは、部材表面に貼り付けられてその部材の状態
を測定する測定用ゲージであるが、貼り付けられる部分
に沿う曲面に形成したことを特徴とするものである。な
お、「測定用ゲージ」には、歪みゲージや温度センサ
ー、疲労センサーなど種々のゲージを含む。また、それ
らゲージによって測定しようとする部材の「状態」と
は、歪みや応力、温度、疲労損傷度などをいう。The measuring gauge according to claim 1 is a measuring gauge that is attached to the surface of a member to measure the state of the member, and is formed on a curved surface along the portion to be attached. It is characterized by having done. The “measurement gauge” includes various gauges such as a strain gauge, a temperature sensor, and a fatigue sensor. The "state" of the member to be measured by these gauges means strain, stress, temperature, degree of fatigue damage and the like.
【０００９】この測定用ゲージは、部材のうちの貼り付
けられる部分に合わせて、あらかじめそれに沿う曲面に
形成したものであるから、部材上に貼り付ける際、部材
表面に沿うように平面状のゲージを曲げる必要がない。
そのため、曲げるときに折れてしまうとか、部材表面に
付きにくい、あるいは後にそこから剥がれやすいとかい
った不都合を解消することができる。したがって、部材
表面に貼り付けるという測定現場での作業がきわめて容
易になり、その後の測定も長期間にわたって円滑に実施
できることになる。Since this measuring gauge is formed in advance on a curved surface corresponding to the portion of the member to be attached, when it is attached on the member, it is a flat gauge along the surface of the member. No need to bend.
Therefore, it is possible to eliminate the inconvenience of being broken when bent, being hard to stick to the surface of the member, or being easily peeled off from there later. Therefore, the work on the measurement site where the product is attached to the surface of the member becomes extremely easy, and the subsequent measurement can be smoothly performed for a long period of time.
【００１０】請求項２に記載した測定用ゲージは、とく
に、部材表面の凹状の部分に貼り付けられてその周方向
の引張力を受けるべく、凹状の部分に沿う曲面を両端部
に形成するとともに、それらの間に平面部分を形成した
ことを特徴とする。In the measuring gauge according to the second aspect of the present invention, in particular, the curved surface along the concave portion is formed at both ends so as to be attached to the concave portion on the surface of the member and receive the tensile force in the circumferential direction. , A flat portion is formed between them.
【００１１】この測定用ゲージは、両端部に曲面の部分
を有していて、貼り付けようとする部材の凹状部分にそ
の曲面が沿うことから、その曲面部分において適切に部
材表面（凹状の表面）に貼り付ることができる。つま
り、貼り付けの際に曲げようとして折れたり、部材表面
に付きにくかったり、あるいは剥がれやすかったりする
という不都合が生じ難い。またこのゲージでは、両端部
に形成された上記の曲面部分の間に平面部分が形成され
ている。部材表面に貼り付けられる曲面部分の間にこう
した平面部分があるがゆえに、このゲージは、測定のた
めに部材から周方向（当該部材の周方向）の引張力を受
けることができる。もし、このような平面部分がなくて
ゲージの全体が曲面状であるなら、周方向の引張力が作
用したとき、貼り付けた部分の間にある曲面状部分が変
形する（曲率が下がる）ことにより、ゲージに伸びが生
じなくなってしまう。なお、このゲージは凹状部分に貼
り付けられるものなので、中ほどに平面部分のあること
が両端部での部材表面への貼り付けを妨げることはな
い。This measuring gauge has curved portions at both ends, and since the curved surface is along the concave portion of the member to be attached, the curved surface portion is appropriately provided on the member surface (concave surface). ) Can be attached to. In other words, it is unlikely that the inconvenience of being bent when being attached, being difficult to stick to the surface of the member, or being easily peeled off will not occur. Further, in this gauge, a flat surface portion is formed between the curved surface portions formed at both ends. Due to the presence of such flat portions between the curved portions attached to the surface of the member, this gauge can receive a tensile force in the circumferential direction (circumferential direction of the member) from the member for measurement. If there is no such flat portion and the gauge is curved as a whole, the curved portion between the pasted portions will be deformed (curvature will decrease) when tensile force in the circumferential direction is applied. As a result, the gauge does not stretch. Since this gauge is attached to the concave portion, the presence of the flat portion in the middle does not hinder attachment to the member surface at both ends.
【００１２】請求項３に記載した測定用ゲージの使用方
法は、測定する部材の表面に、請求項１または２に記載
の測定用ゲージであって該当部分の表面に沿う曲面を有
するものを貼り付けることを特徴とする。According to a third aspect of the present invention, there is provided a method for using a measuring gauge, wherein the surface of a member to be measured is the measuring gauge having a curved surface extending along the surface of the corresponding portion. It is characterized by attaching.
【００１３】上記のように貼り付け部分に沿う曲面を有
する測定用ゲージであっても、ゲージの曲面と一致しな
い曲面部分に貼り付けようとするなら、所期のメリット
はもたらされない。この請求項の方法のように、被測定
部材の表面に沿う曲面を有する測定用ゲージを使用する
必要がある。つまり、このような方法にしたがってこ
そ、ゲージが折れたり、部材表面に付きにくかったり、
あるいは剥がれやすかったりするような不都合が確実に
解消される。なお、こうした方法を効率的に実施するに
は、曲率の異なる曲面をもたせて多数種類のゲージをあ
らかじめ製作し準備しておき、部材に貼り付ける際に
は、その部材中の該当部分の曲面に合うゲージを選択し
て使用するのがよい。Even in the case of the measuring gauge having the curved surface along the attachment portion as described above, if the attachment is made to the curved portion that does not match the curved surface of the gauge, the desired merit is not brought. As in the method of this claim, it is necessary to use a measuring gauge having a curved surface along the surface of the member to be measured. In other words, according to such a method, the gauge will break, it will be difficult to stick to the surface of the member,
Alternatively, inconvenience such as easy peeling is surely eliminated. In order to carry out such a method efficiently, many kinds of gauges should be prepared and prepared in advance with curved surfaces having different curvatures. It is better to select and use a suitable gauge.
【００１４】請求項４に記載した測定用ゲージの使用方
法は、測定する部材の表面に、請求項１または２に記載
の測定用ゲージであってスリット付きの金属箔が当該ス
リットをはさむ両側位置でベース材の表面上に固着され
てなる疲労センサーを、金属箔に引張力をかける向きに
弾性変形させたうえで貼り付けることを特徴とする。According to a fourth aspect of the present invention, there is provided a method for using the measuring gauge, wherein the surface of the member to be measured is the measuring gauge according to the first or second aspect, in which both sides of the slit are covered by the metal foil with slits. It is characterized in that the fatigue sensor fixed on the surface of the base material is elastically deformed in a direction in which a tensile force is applied to the metal foil and then attached.
【００１５】曲率の異なる曲面をもつ多数種類のゲージ
を準備しておくとしても、すべての曲面（曲率）に完全
に一致するゲージが必ずあるように準備することは不可
能である。したがって現実的には、部材の表面とは多少
異なる曲面をもつゲージをやや曲げて貼り付けることに
より使用することが避けられない。その際、一般的なゲ
ージならどちら向きに曲げてもよいのだが、上記のよう
な疲労センサーの場合には、金属箔に引張力をかける向
きに曲げる（ただし弾性変形の範囲内で）のがよい。疲
労センサーの場合、引張りの応力場において金属箔中の
スリットからき裂が進展することが測定上必要であるた
め、部材の疲労損傷度を高感度・高精度に知るうえで
は、曲げるとすれば、金属箔に圧縮力ではなく引張力が
作用する向きに曲げるべきなのである。Even if many kinds of gauges having curved surfaces with different curvatures are prepared, it is impossible to prepare so that there is always a gauge that perfectly matches all curved surfaces (curvatures). Therefore, in reality, it is inevitable that a gauge having a curved surface slightly different from the surface of the member is used after being slightly bent and attached. At that time, if it is a general gauge, it may be bent in either direction, but in the case of the above fatigue sensor, it is better to bend in the direction of applying tensile force to the metal foil (however, within the range of elastic deformation). Good. In the case of a fatigue sensor, it is necessary for measurement that a crack propagates from a slit in a metal foil in a tensile stress field, so in order to know the fatigue damage degree of a member with high sensitivity and accuracy, if bending is considered, The metal foil should be bent in the direction in which tensile force acts instead of compressive force.
【００１６】請求項５に記載した測定用ゲージの使用方
法は、測定する部材の表面に、底面が該当部分の表面に
固着され得る曲面であり上面が平面である中間板を取り
付けて、その中間板の上面に平面状の測定用ゲージを貼
り付けることを特徴とする。なお「上面」とは、被測定
部材から離れた側の面をさし、鉛直上方であるか否かは
問わない（以下も同様）。According to a fifth aspect of the present invention, the measuring gauge is used by mounting an intermediate plate on the surface of the member to be measured, the bottom surface of which is a curved surface and the top surface of which can be fixed to the surface of the corresponding portion. It is characterized in that a flat measuring gauge is attached to the upper surface of the plate. The "upper surface" refers to the surface on the side away from the member to be measured, and it does not matter whether it is vertically above (the same applies below).
【００１７】このような中間板を介して部材表面上に測
定用ゲージを貼るのなら、適切な中間板さえ準備してお
けば、測定用ゲージを曲げて使用する必要がなく、また
曲面状の測定用ゲージを準備する必要もない。平面状の
測定用ゲージは製造容易で入手しやすいこと、部材表面
の曲面に合った曲面を底面にもち上面が平らな中間板な
ら金属板等で容易に製造できることなどから、この方法
は低コストで実現できるものだといえる。If a measuring gauge is pasted on the surface of a member through such an intermediate plate, it is not necessary to bend the measuring gauge for use if a suitable intermediate plate is prepared, and a curved surface is used. There is no need to prepare a measuring gauge. Since a flat measuring gauge is easy to manufacture and is easy to obtain, and an intermediate plate that has a curved surface that matches the curved surface of the member and has a bottom surface and a flat top surface can be easily manufactured with a metal plate, etc., this method is low cost. It can be said that it can be realized with.
【００１８】請求項６に記載した測定用ゲージの使用方
法は、測定する部材の表面に、底面が該当部分の表面に
固着され得る曲面であり上面が他の曲面である中間板を
取り付け、その中間板の上面に請求項１または２に記載
の測定用ゲージを貼り付けることを特徴とする。According to a sixth aspect of the present invention, the measuring gauge is used by mounting an intermediate plate on the surface of the member to be measured, the bottom surface being a curved surface that can be fixed to the surface of the corresponding portion and the upper surface being another curved surface. The measuring gauge according to claim 1 is attached to the upper surface of the intermediate plate.
【００１９】前述したように、曲面の異なる多数の測定
用ゲージを準備するとしても、つねに部材表面に完全に
ぴったりと沿うわけではない。しかし、この請求項の方
法をとれば、限られた曲面のゲージを準備しておくだけ
で、それらのゲージを少しも曲げずに適切に部材上に貼
り付けて各種計測を行うことが可能である。底面が部材
表面に合った曲面であって、上面が、準備したゲージの
曲面と一致する曲面（標準曲面）であるような中間板
を、部材表面とゲージとの間に使用すればよいからであ
る。ゲージよりも中間板の方が低コストで入手または製
造できるため、ゲージの種類を減らして中間板を多数種
類準備しておくのが合理的である。As described above, even if a large number of measuring gauges having different curved surfaces are prepared, they are not always perfectly aligned with the surface of the member. However, according to the method of this claim, it is possible to perform various measurements by simply attaching the gauges with a limited curved surface and appropriately attaching them on a member without bending them at all. is there. An intermediate plate whose bottom surface is a curved surface that matches the surface of the member and whose upper surface is a curved surface (standard curved surface) that matches the curved surface of the prepared gauge may be used between the surface of the member and the gauge. is there. Since intermediate plates can be obtained or manufactured at lower cost than gauges, it is rational to reduce the types of gauges and prepare a large number of intermediate plates.
【００２０】請求項７に記載した測定用ゲージの使用方
法はさらに、上記の測定用ゲージが貼り付けられた部分
の曲率（または当該ゲージの曲率）に応じて、当該ゲー
ジの出力に、a)当該部分の曲率とゲージの曲率とが異な
ることを補正する処理、または、b)当該部分の変化とゲ
ージの変化とが異なることを補正する処理を加える（上
記a)・b)のいずれかまたは双方の処理をする）ことを特
徴とする。The method of using the measuring gauge according to claim 7 further includes: a) according to the curvature of the portion to which the measuring gauge is attached (or the curvature of the gauge), a) Either of the processing to correct the difference in the curvature of the part and the curvature of the gauge, or b) add the processing to correct the difference in the change of the part and the change of the gauge (above a) or b), or Both processes are performed).
【００２１】部材表面に貼り付けられて使用される測定
用ゲージは、通常の測定部位が平面であり測定中も平面
であり続けるため、ゲージの感度や出力値は平面状態で
校正されている。しかし、測定用ゲージを曲面上に貼り
付けると、その部分の曲率とゲージの曲率とが異なり、
または、その部分の変化（機械的変位など）とゲージの
変化（機械的変位など）とが異なることから、平面上に
ゲージを貼り付けた場合と同じ信号処理によっては、ゲ
ージの出力から被測定部材に関する真値を知ることはで
きない。そこで、ゲージから得られる出力に上記のよう
な補正を加え、もって部材の状態を正確に把握するので
ある。The measuring gauge attached and used on the surface of the member is calibrated in a planar state because the normal measuring portion is a flat surface and remains flat during the measurement. However, when a measurement gauge is attached on a curved surface, the curvature of that part and the curvature of the gauge are different,
Or, because the change in that part (such as mechanical displacement) is different from the change in the gauge (such as mechanical displacement), depending on the same signal processing as when the gauge is pasted on a flat surface, the output of the gauge can be used to measure the measured value. It is not possible to know the true value for a member. Therefore, the above-mentioned correction is added to the output obtained from the gauge to accurately grasp the state of the member.
【００２２】上記の補正は、具体的には、
i) 部材表面の曲率ρmとゲージの板厚中心での曲率ρs
とから、ゲージの出力値Ｑsに対し、測定する部位の値
Ｑmを Ｑm＝Ｑs・ρs／ρmで求める、
ii) 理論解析やＦＥＭ（有限要素法解析）等の力学的シ
ミュレーションによって、測定部位に曲率があるときの
関数Ｑs＝Ｆ（Ｑm）を得、これにより補正をしてＱmを
知る、
iii) 代表する曲率ρをもつ被測定部材にゲージを貼り
付け、代表する荷重条件によりこのゲージの出力を実測
して、関数Ｑs＝Ｆ（Ｑm）を得、これによる補正をして
Ｑmを知る（実際の測定のためのゲージは、上記の代表
する曲率ρの近傍（ρ±Δρ）で使用する）といった手
法のうちいずれかをとるとよい。ただし、上記i)の手法
は、部材側の曲率が変化しない場合に限って採用でき
る。Specifically, the above-mentioned correction is made as follows: i) The curvature ρ m of the member surface and the curvature ρ s at the thickness center of the gauge.
From the gauge output value Q s , the value Q m of the part to be measured is calculated by Q m = Q s ρ s / ρ m , ii) Mechanical analysis such as theoretical analysis and FEM (finite element method analysis) By simulation, a function Q s = F (Q m ) when the measurement site has a curvature is obtained, and Q m is corrected by this. Iii) A gauge is attached to the measured member having a representative curvature ρ. , by actually measuring the output of the gauge by representative loading conditions, gauges for the function Q s = give F (Q m), and the correction by this know Q m (actual measurement is representative of the One of the methods such as the vicinity of the curvature ρ (used in the case of ρ ± Δρ)). However, the above method i) can be adopted only when the curvature on the member side does not change.
【００２３】[0023]
【発明の実施の形態】発明の実施についての形態を図１
〜図１３に示す。図１〜図５の形態では、図１４に示す
疲労センサー１Ｚを曲面状に改変した疲労センサー１Ａ
〜１Ｅを使用し、図６〜図１１のものでは、図１４の疲
労センサー１Ｚをそのまま使用している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a mode for carrying out the invention.
~ Shown in FIG. 1 to 5, the fatigue sensor 1A obtained by modifying the fatigue sensor 1Z shown in FIG. 14 into a curved shape.
.About.1E are used, and in FIGS. 6 to 11, the fatigue sensor 1Z of FIG. 14 is used as it is.
【００２４】疲労センサー１（１Ｚおよび１Ａ〜１Ｅ）
の概要は、図１４に基づいてすでに説明したとおりであ
る。材料としてはたとえば、金属箔２に純ニッケル、ベ
ース材５にインバー（高ニッケル含有の不変鋼）を使用
するのが好ましい。たとえば金属箔２の厚さを０．１ｍ
ｍ、ベース材５の厚さを０．０５ｍｍなどとし、双方と
も、長さを８〜４０ｍｍ程度、幅を５〜２５ｍｍ程度と
する（ただしベース材５の長さおよび幅が金属箔２のそ
れらをやや上回るようにするのがよい）。金属箔２の長
さ方向の中ほどに、片側の縁部から長さ方向と直角な向
きに、短いスリット３を形成している。長さ方向の両端
付近であってスリット３をはさむ２箇所に、図１４
（ｂ）のように間隔をおいて、金属箔２とベース材５と
の固着部４を設ける。金属箔２とベース材５との固着
は、接着剤によって行うことができ、また図１・図２の
例のように各複数点の点溶接（たとえばＰＧＲＭ：パラ
レルギャップ式抵抗溶接）で行うのもよい。Fatigue sensor 1 (1Z and 1A-1E)
Has already been described with reference to FIG. As the material, for example, it is preferable to use pure nickel for the metal foil 2 and invar (invariable steel containing high nickel) for the base material 5. For example, if the thickness of the metal foil 2 is 0.1 m
m, the base material 5 has a thickness of 0.05 mm, etc., and both have a length of about 8 to 40 mm and a width of about 5 to 25 mm (provided that the length and width of the base material 5 are those of the metal foil 2). It is better to slightly exceed). A short slit 3 is formed in the middle of the length direction of the metal foil 2 from one edge portion in a direction perpendicular to the length direction. 14 at two positions near both ends in the length direction and sandwiching the slit 3.
As shown in (b), a fixing portion 4 for fixing the metal foil 2 and the base material 5 is provided at intervals. The metal foil 2 and the base material 5 can be fixed to each other by an adhesive agent, and as in the example of FIGS. 1 and 2, spot welding of a plurality of points (for example, PGRM: parallel gap resistance welding) is performed. Good.
【００２５】センサー１を貼り付けた被測定部材Ｍに小
さなひずみが発生しただけでもスリット３の先にき裂Ｘ
を発生・進展させ、もって部材Ｍの疲労損傷度を高感度
かつ高精度に測定できるよう、疲労センサー１（１Ｚお
よび１Ａ〜１Ｅ）には、いずれもつぎのような構成また
は性質を付加している。すなわち、イ)スリット３の先端
部を、き裂の発生をうながしやすい鋭角なものにした。
ロ)金属箔２にはその長さ方向と直角な向きに、スリット
３を含むよう減厚部２ａを形成し、その減厚部２ａは厚
さを０．０２ｍｍとして金属箔２の全幅に及ぶ長さにし
た。ハ)金属箔２とベース材５とを昇温状態で上記２箇所
にて固着しそののち常温に戻すことにより、ベース材５
よりも熱膨張率の大きい金属箔２に引張応力を残留させ
ている。Even if a small strain is generated in the measured member M to which the sensor 1 is attached, a crack X is formed at the tip of the slit 3.
The fatigue sensor 1 (1Z and 1A to 1E) is provided with the following configurations or properties so that the fatigue damage degree of the member M can be measured with high sensitivity and high accuracy. There is. That is, (a) the tip of the slit 3 has an acute angle which facilitates the occurrence of cracks.
B) A reduced thickness portion 2a is formed on the metal foil 2 in a direction perpendicular to its length direction so as to include the slit 3. The reduced thickness portion 2a has a thickness of 0.02 mm and extends over the entire width of the metal foil 2. I made it to length. C) The metal foil 2 and the base material 5 are fixed to each other in the temperature rising state at the above-mentioned two places, and then returned to room temperature to obtain the base material 5.
The tensile stress is left in the metal foil 2 having a larger coefficient of thermal expansion.
【００２６】図１〜図５に示す疲労センサー１Ａ〜１Ｅ
は、貼り付けられる部材の表面に合う曲面をもたせて形
成したものである。そのような曲面をもつ金属箔２Ａ〜
２Ｅやベース材５Ａ〜５Ｅの素材を得るには、相当の曲
面をもつ型の表面上に電鋳をし、または各薄板の素材を
プレス成形したのち応力除去焼鈍を施すなどすればよ
い。なお、金属箔２に減厚部２ａを形成するには、減厚
部２ａのみを露出して他をレジスト被覆して行うエッチ
ング処理をするのがよい。Fatigue sensors 1A-1E shown in FIGS.
Is formed by having a curved surface that fits the surface of the member to be attached. Metal foil 2A having such curved surface
In order to obtain the materials for 2E and the base materials 5A to 5E, electroforming may be performed on the surface of a mold having a considerably curved surface, or the material for each thin plate may be press-molded and then subjected to stress relief annealing. In addition, in order to form the reduced thickness portion 2a on the metal foil 2, it is preferable to perform an etching process in which only the reduced thickness portion 2a is exposed and the other portions are covered with a resist.
【００２７】上記のうち図１〜図４の例では、被測定部
材における円筒状の面に各センサー１Ａ〜１Ｄをぴった
りと貼り付けられるようにしている。すなわち、いずれ
も、ベース材５Ａ〜５Ｄの下の面（金属箔を有しない
面）の曲率を、被測定部材の当該曲面の曲率に一致させ
（または使用する接着剤層の厚さを考慮して一致させ）
ているので、測定部分の表面に密に接合できる。In the examples of FIGS. 1 to 4 among the above, the sensors 1A to 1D can be exactly attached to the cylindrical surface of the member to be measured. That is, in each case, the curvature of the surface (the surface having no metal foil) below the base materials 5A to 5D is made to match the curvature of the curved surface of the measured member (or in consideration of the thickness of the adhesive layer to be used). Match)
Therefore, it can be closely joined to the surface of the measurement portion.
【００２８】まず、図１のセンサー１Ａは、その長さ方
向を周方向に向け、スリット３の長さ方向を円筒面の軸
線の方向に合わせて、円筒面の外向きの面（凸の面）に
貼り付け得るようにしたものである。被測定部材に生じ
る周方向のひずみ振幅を検出するのに適している。セン
サー１Ａにおける金属箔２Ａとベース材５Ａとを、貼り
付けられる面に合う曲面に形成している。一方、図２の
センサー１Ｂは、円筒面に対する向きは図１のセンサー
１Ａと同じだが、内向きの面（凹の面）に貼り付けるよ
うにしたものである。センサー１Ｂにおいては、ベース
材５Ｂは全体がその凹状の面に沿うよう曲面に形成して
いるが、金属箔２Ｂは、凹状の面において周方向に発生
する引張力を適切に受けるよう、ベース材５に固着した
両端付近（固着部４）を除く中ほどの部分に平面部分２
ｂを設けている。First, in the sensor 1A shown in FIG. 1, the length direction of the sensor 1A is oriented in the circumferential direction, and the length direction of the slit 3 is aligned with the direction of the axis of the cylindrical surface. ) Can be attached to. It is suitable for detecting the strain amplitude in the circumferential direction that occurs in the member to be measured. The metal foil 2A and the base material 5A in the sensor 1A are formed into a curved surface that matches the surface to be attached. On the other hand, the sensor 1B of FIG. 2 has the same orientation as the sensor 1A of FIG. 1 with respect to the cylindrical surface, but is attached to the inward surface (concave surface). In the sensor 1B, the base material 5B is formed into a curved surface so that the entire base material 5B extends along the concave surface, but the metal foil 2B is formed so that the base material 5B appropriately receives the tensile force generated in the circumferential direction on the concave surface. The flat part 2 is attached to the middle part except the both ends (fixed part 4) fixed to
b is provided.
【００２９】図３のセンサー１Ｃは、図１のセンサー１
Ａと同じく円筒面の外向きの面（凸の面）に貼り付ける
ものだが、センサー１Ａとは違って金属箔２Ｃ等の長さ
方向を円筒面の軸線方向に合わせ、スリット３の長さ方
向を円周方向に向けて、軸線方向のひずみ振幅を検出し
ようとしている。そして図４のセンサー１Ｄは、円筒面
に対する向きはセンサー１Ｃと同じであるものの、円筒
面の内向きの面（凹の面）に貼り付けるよう構成してい
る。The sensor 1C shown in FIG. 3 corresponds to the sensor 1 shown in FIG.
Like A, it is attached to the outward surface (convex surface) of the cylindrical surface, but unlike the sensor 1A, the length direction of the slit 3 is adjusted by aligning the length direction of the metal foil 2C with the axial direction of the cylinder surface. Is oriented in the circumferential direction to detect the strain amplitude in the axial direction. The sensor 1D in FIG. 4 has the same orientation as the sensor 1C with respect to the cylindrical surface, but is configured to be attached to the inward surface (concave surface) of the cylindrical surface.
【００３０】図５の疲労センサー１Ｅは、２次元曲面で
ある円筒面ではなく、球面のような３次元の曲面上に密
に貼り付けられるようにしたものである。すなわち、金
属箔２Ｅとベース材５Ｅとは、その長さの方向に見ても
幅の方向に見ても曲率をもっている。このようなセンサ
ー１Ｅは、被測定部材中の相当する曲面をもつ部分に適
切に貼り付けられて剥がれず安定的に機能して、スリッ
ト３と直交する方向のひずみ振幅を良好に検出する。な
お、図５には球面的な面の外側（凸の面）に貼るのに適
したセンサー１Ｅのみを示したが、そのような面の内側
（凹の面）に貼るセンサーも構成できることは言うまで
もない。また、たとえば、イ)騎馬用の鞍のように、側方
の一側から見ると上に凸であり、９０°だけ異なる他の
側から見ると下に凸となった曲面を有するセンサーや、
ロ)水平においたドーナツの上向きの部位のように、上に
凸の面であって最上部を連ねる尾根の線がその面とほぼ
直角の向きから見て曲がっているような曲面をもつセン
サー、ハ)凸部または凹部を各１箇所以上に有する凹凸面
をもつセンサー等も、被測定部材の面に合うように構成
することが可能である。The fatigue sensor 1E shown in FIG. 5 is designed to be closely attached to a three-dimensional curved surface such as a spherical surface instead of a cylindrical surface which is a two-dimensional curved surface. That is, the metal foil 2E and the base material 5E have a curvature in both the length direction and the width direction. Such a sensor 1E is properly attached to a portion having a corresponding curved surface in the member to be measured, does not peel off, and functions stably, and detects the strain amplitude in the direction orthogonal to the slit 3 satisfactorily. Although FIG. 5 shows only the sensor 1E suitable for being attached to the outside (convex surface) of the spherical surface, it goes without saying that a sensor to be attached to the inside (concave surface) of such a surface can also be configured. Yes. Also, for example, a) a sensor having a curved surface that is convex upward when viewed from one side, and curved downward when viewed from the other side, such as a saddle for a horse,
(B) A sensor with a curved surface that is a convex surface and the line of the ridges connecting the uppermost part is bent when viewed from a direction substantially perpendicular to that surface, like an upwardly facing part of a donut horizontally placed, C) A sensor or the like having a convexo-concave surface having one or more convex portions or concave portions can also be configured to match the surface of the member to be measured.
【００３１】測定しようとする部材表面の曲面に自然状
態でぴったりと合う曲面をもつセンサーを使用するのが
理想的であるが、部材表面に近い曲面をもつセンサーが
あってそれを僅かに曲げて使用する場合には、金属箔２
に引張力がかかる向きに弾性変形させたうえで当該部材
に貼り付けるのがよい。そうすれば、引張りの応力場を
得て金属箔２のスリット３からき裂が進展しやすく、し
たがって疲労損傷度について高感度の測定が可能だから
である。金属箔２に引張力がかかる向きに曲げるには、
図１・図３・図５のように外向きに凸の部材表面に貼る
場合にはその部材表面よりも曲率半径の大きなセンサー
を使用し、図２・図４のように凹の部材表面に貼る場合
にはその部材表面よりも曲率半径の小さなセンサーを使
用するのがよい。Although it is ideal to use a sensor having a curved surface that closely matches the curved surface of the member surface to be measured in a natural state, there is a sensor having a curved surface close to the member surface, and bend it slightly. Metal foil 2 if used
It is advisable to attach the member to the member after elastically deforming it in such a direction that a tensile force is applied to it. This is because a tensile stress field is obtained and a crack easily propagates from the slit 3 of the metal foil 2, and therefore, the fatigue damage degree can be measured with high sensitivity. To bend the metal foil 2 in the direction in which tensile force is applied,
When sticking to the surface of a member that is convex outward as shown in FIGS. 1, 3 and 5, use a sensor with a radius of curvature larger than that of the surface of the member, and as shown in FIGS. When sticking, it is preferable to use a sensor having a smaller radius of curvature than the surface of the member.
【００３２】図６〜図１１に示す例は、いずれも図１４
に示した平面状の疲労センサー１Ｚを、平面状のまま、
中間板１１（１１Ａ〜１１Ｆ）を介して被測定部材Ｍ
（Ｍ１〜Ｍ６）の曲面上に貼るようにしたものである。
すなわち、中間板１１はいずれも、平面状のセンサー１
（のベース材５）を密に貼り付け得る平面を一方の面に
有し、他方の面に、部材中の測定面にぴったり沿う曲面
を備えている。各中間板１１はたとえば金属片で形成
し、接着剤や溶接等にて部材Ｍの表面に接合する。中間
板１１は間隔をおいて二つを部材Ｍ上に固定するが、間
隔をおくのは、中間板１１Ａの剛性が部材Ｍのひずみ等
に影響を及ぼさないようにするためである。そして、そ
うした一対の中間板１１における上面（平坦面）に、各
センサー１Ｚのベース材５を接着する。The examples shown in FIGS. 6 to 11 are all shown in FIG.
The planar fatigue sensor 1Z shown in FIG.
The member to be measured M through the intermediate plate 11 (11A to 11F)
It is intended to be stuck on the curved surface of (M1 to M6).
That is, each of the intermediate plates 11 has a flat sensor 1.
One surface has a flat surface on which (the base material 5) can be densely adhered, and the other surface is provided with a curved surface that closely follows the measurement surface in the member. Each intermediate plate 11 is formed of, for example, a metal piece, and is joined to the surface of the member M by an adhesive, welding, or the like. The two intermediate plates 11 are fixed on the member M at intervals, but the intervals are provided so that the rigidity of the intermediate plate 11A does not affect the strain or the like of the member M. Then, the base material 5 of each sensor 1Z is adhered to the upper surfaces (flat surfaces) of the pair of intermediate plates 11.
【００３３】これらのうち図６の例は、部材Ｍ１におけ
る円筒状の外向き面（凸の面）に、金属箔２Ｚの長さ方
向を円筒面の軸線方向に合わせ、スリット３の長さ方向
を円周方向に向けてセンサー１Ｚを配置するものであ
る。図３のようなセンサー１Ｃを使用する場合と同様
に、円筒面での長さ方向のひずみ振幅による疲労損傷度
等を測定するのに好適である。図７の例は、円筒状の内
向き面（凹の面）にセンサー１Ｚを配置するようにした
点で図６の例と異なっている。中間板１１Ｂのうち一方
の面には、内向きの面に密に沿うような凸状の面を形成
している。Among these, in the example of FIG. 6, the length direction of the metal foil 2Z is aligned with the axial direction of the cylindrical surface on the cylindrical outward surface (convex surface) of the member M1, and the longitudinal direction of the slit 3 is adjusted. The sensor 1Z is arranged so that the sensor 1Z faces in the circumferential direction. Similar to the case of using the sensor 1C as shown in FIG. 3, it is suitable for measuring the degree of fatigue damage due to the strain amplitude in the longitudinal direction on the cylindrical surface. The example of FIG. 7 differs from the example of FIG. 6 in that the sensor 1Z is arranged on a cylindrical inward surface (concave surface). A convex surface is formed on one surface of the intermediate plate 11B so as to closely follow the inward surface.
【００３４】図８の例は、センサー１Ｚを、その長さ方
向を円筒面の周方向に向け、スリット３の長さ方向を円
筒面の軸線の方向に合わせて、円筒面の外向きの面（凸
の面）に設けるもので、図１の場合と同様、部材Ｍ３に
生じる周方向のひずみ振幅を検出するのを目的としてい
る。中間板１１Ｃには、センサー１Ｚをそのような向き
に配置するのに適した曲面と平面とを形成している。図
９の例は、図８の例とは違って円筒状の内向き面（凹の
面）にセンサー１Ｚを配置するようにしたもので、中間
板１１Ｄには内向き面に合う曲面を形成している。In the example shown in FIG. 8, the sensor 1Z has its length direction oriented in the circumferential direction of the cylindrical surface, and the length direction of the slit 3 is aligned with the axial direction of the cylindrical surface so that the surface of the cylindrical surface facing outward. It is provided on the (convex surface), and its purpose is to detect the circumferential strain amplitude occurring in the member M3 as in the case of FIG. A curved surface and a flat surface suitable for disposing the sensor 1Z in such an orientation are formed on the intermediate plate 11C. The example of FIG. 9 is different from the example of FIG. 8 in that the sensor 1Z is arranged on the cylindrical inward surface (concave surface), and the intermediate plate 11D is formed with a curved surface that matches the inward surface. is doing.
【００３５】図１０および図１１の例は、円筒面ではな
く球面のような３次元曲面上にセンサー１Ｚを配置する
こととしたもので、図１０では部材Ｍ５の凸の面に、図
１１では部材Ｍ６の凹の面にセンサー１Ｚを設ける。平
面状のセンサー１Ｚをそのように使用できるよう、平坦
面と適切な曲面とを有する中間板１１Ｅおよび１１Ｆを
それぞれセンサーと部材との間に使用する。なお、同様
にして適切な曲面を有する中間板を使用することによ
り、たとえば、イ)馬の鞍のような曲面上での平坦なセン
サーの使用、ロ)水平においたドーナツの上向きの部位の
ような曲面における平坦なセンサーの使用、ハ)凸部また
は凹部を各１箇所以上に有する凹凸曲面における平坦な
センサーの使用なども可能になる。In the examples of FIGS. 10 and 11, the sensor 1Z is arranged on a three-dimensional curved surface such as a spherical surface instead of a cylindrical surface. In FIG. 10, the sensor 1Z is arranged on the convex surface of the member M5, and in FIG. The sensor 1Z is provided on the concave surface of the member M6. In order that the planar sensor 1Z can be used as such, intermediate plates 11E and 11F having a flat surface and a suitable curved surface are used between the sensor and the member, respectively. In addition, similarly, by using an intermediate plate having an appropriate curved surface, for example, (a) use of a flat sensor on a curved surface such as a saddle of a horse, and (b) an upwardly facing part of a donut placed horizontally. It is also possible to use a flat sensor on a curved surface, and c) use a flat sensor on an uneven curved surface having one or more convex portions or concave portions.
【００３６】なお、図示は省略したが、平面状の疲労セ
ンサー１Ｚに代えて、被測定部材の曲面に近い曲面を有
するセンサーを、適当な中間板とともに使用することも
可能である。また、上記には疲労センサーに関する例ば
かりを示したが、歪みゲージや温度センサーなど、部材
表面に貼り付けて使用するものなら、種々の測定用ゲー
ジについて図１〜図１１と同様に構成し、または使用す
ることができる。Although not shown, a sensor having a curved surface close to the curved surface of the member to be measured can be used in place of the flat fatigue sensor 1Z together with an appropriate intermediate plate. Further, although only examples relating to the fatigue sensor are shown above, various strain gauges, such as strain gauges and temperature sensors, which are attached to the surface of the member to be used, are configured in the same manner as in FIGS. 1 to 11, Or it can be used.
【００３７】ただし、測定用ゲージを曲面上に貼り付け
る場合には、部材表面の曲率とゲージの曲率とが異な
り、または、その部材の変化（伸び等）とゲージの変化
（同）とが異なることから、平面上にゲージを貼った場
合の校正データのにみよっては一般に被測定部材の状態
を正確に知ることはできない。そこで、たとえばＦＥＭ
など材料力学的な解析に基づき、図１２のように、曲面
で得られたセンサーの（生の）出力に曲面（曲率）別の
補正を加えてそのセンサーの（正式な）出力とする、と
いった補正処理を加えるのがよい。測定用ゲージが疲労
センサーである場合にも、材料力学的な解析や実測デー
タに基づき、たとえば図１３のようにき裂進展長さに曲
率別の補正を加えて疲労損傷度を求めるのが好ましい。However, when the measuring gauge is attached on a curved surface, the curvature of the member surface and the curvature of the gauge are different, or the change (elongation etc.) of the member and the change (the same) of the gauge are different. Therefore, it is generally impossible to accurately know the state of the member to be measured by looking at the calibration data when the gauge is stuck on the flat surface. So, for example, FEM
Based on material mechanics analysis, etc., as shown in FIG. 12, the (raw) output of the sensor obtained on the curved surface is corrected for each curved surface (curvature) to obtain the (official) output of that sensor. It is better to add a correction process. Even when the measuring gauge is a fatigue sensor, it is preferable to obtain the degree of fatigue damage by correcting the crack growth length for each curvature as shown in FIG. 13 based on material mechanics analysis and actual measurement data. .
【００３８】[0038]
【発明の効果】請求項１に記載した測定用ゲージは、貼
り付けられる部分に合わせてあらかじめ曲面状に形成し
たものであるから、部材表面に貼り付けるという測定現
場での作業がきわめて容易になり、その後の測定も安定
して円滑に行える。請求項２に記載の測定用ゲージな
ら、適切に部材表面（凹状の表面）に貼り付られるう
え、その凹状の部分に作用する周方向の引張力を受けと
め、測定に適した変化をきたす。Since the measuring gauge according to claim 1 is formed in a curved surface in advance in accordance with the portion to be attached, the work on the measuring site of attaching to the surface of the member becomes extremely easy. The subsequent measurement can be performed stably and smoothly. With the measuring gauge according to the second aspect of the present invention, the gauge is appropriately attached to the surface of the member (concave surface), and the tensile force in the circumferential direction acting on the concave portion is received to cause a change suitable for measurement.
【００３９】請求項３に記載した測定用ゲージの使用方
法によれば、ゲージが折れたり、部材表面に付きにくか
ったり、あるいは剥がれやすかったりするような不都合
が確実に解消される。請求項４に記載した測定用ゲージ
の使用方法なら、疲労センサーにおいて、金属箔中にき
裂を進展させる引張りの応力場が形成されやすいため、
部材の疲労損傷度を高感度・高精度に知るうえで好まし
い。どんな部材表面にも合うように多数種類のゲージを
準備しておく必要がなくなる、という点でも都合がよ
い。According to the method of using the measuring gauge of the third aspect, it is possible to surely eliminate the inconvenience that the gauge is broken, it is hard to stick to the surface of the member, or it is easily peeled off. According to the method of using the measuring gauge according to claim 4, in the fatigue sensor, a tensile stress field for propagating a crack is easily formed in the metal foil.
It is preferable to know the degree of fatigue damage of members with high sensitivity and accuracy. It is also convenient in that it is not necessary to prepare many kinds of gauges to fit any surface of the member.
【００４０】請求項５に記載の使用方法によれば、測定
用ゲージを曲げて使用する必要がなく、また曲面状の測
定用ゲージを準備する必要もない。低コストで実現でき
ることも利点である。請求項６に記載の使用方法なら
ば、限られた曲面のゲージを準備しておくだけで、それ
らのゲージを少しも曲げずに適切に部材上に貼り付けて
各種計測を行うことができる。ゲージの種類を減らして
中間板を多数種類準備しておけば、低コストで実施がで
きる。請求項７に記載の使用方法によれば、測定用ゲー
ジの出力から被測定部材の状態を正確に把握することが
可能になる。According to the use method of the fifth aspect, it is not necessary to bend the measuring gauge for use, and it is not necessary to prepare a curved measuring gauge. It is also an advantage that it can be realized at low cost. In the method of use according to the sixth aspect, various gauges can be appropriately attached to a member without bending at all by simply preparing gauges having a limited curved surface. If you reduce the number of gauges and prepare a large number of intermediate plates, you can implement it at low cost. According to the method of use described in claim 7, the state of the member to be measured can be accurately grasped from the output of the measuring gauge.
【図１】発明の実施の形態として示す疲労センサー１Ａ
の斜視図である。FIG. 1 is a fatigue sensor 1A shown as an embodiment of the invention.
FIG.
【図２】発明の実施の形態として示す疲労センサー１Ｂ
の斜視図である。FIG. 2 is a fatigue sensor 1B shown as an embodiment of the invention.
FIG.
【図３】発明の実施の形態として示す疲労センサー１Ｃ
の斜視図である。FIG. 3 is a fatigue sensor 1C shown as an embodiment of the invention.
FIG.
【図４】発明の実施の形態として示す疲労センサー１Ｄ
の斜視図である。FIG. 4 is a fatigue sensor 1D shown as an embodiment of the invention.
FIG.
【図５】発明の実施の形態として示す疲労センサー１Ｅ
の斜視図である。FIG. 5 is a fatigue sensor 1E shown as an embodiment of the invention.
FIG.
【図６】発明の実施の形態として使用状態を示す疲労セ
ンサー１Ｚ等の斜視図である。FIG. 6 is a perspective view of a fatigue sensor 1Z and the like showing a usage state as an embodiment of the invention.
【図７】発明の実施の形態として使用状態を示す疲労セ
ンサー１Ｚ等の斜視図である。FIG. 7 is a perspective view of the fatigue sensor 1Z and the like showing a usage state as an embodiment of the invention.
【図８】発明の実施の形態として使用状態を示す疲労セ
ンサー１Ｚ等の斜視図である。FIG. 8 is a perspective view of the fatigue sensor 1Z and the like showing a usage state as an embodiment of the invention.
【図９】発明の実施の形態として使用状態を示す疲労セ
ンサー１Ｚ等の斜視図である。FIG. 9 is a perspective view of the fatigue sensor 1Z and the like showing a usage state as an embodiment of the invention.
【図１０】発明の実施の形態として使用状態を示す疲労
センサー１Ｚ等の斜視図である。FIG. 10 is a perspective view of the fatigue sensor 1Z and the like showing a usage state as an embodiment of the invention.
【図１１】発明の実施の形態として使用状態を示す疲労
センサー１Ｚ等の斜視図である。FIG. 11 is a perspective view of the fatigue sensor 1Z and the like showing a usage state as an embodiment of the invention.
【図１２】曲面について使用される測定用ゲージの出力
に加えるべき補正処理を例示する線図である。FIG. 12 is a diagram illustrating a correction process to be added to the output of a measuring gauge used for a curved surface.
【図１３】曲面について使用される疲労センサーの出力
（き裂進展長さ）に加えるべき補正処理を例示する線図
である。FIG. 13 is a diagram illustrating a correction process to be added to the output (crack growth length) of a fatigue sensor used for a curved surface.
【図１４】一般的な疲労センサー１Ｚを示す平面図（図
（ａ））および正面図（図（ｂ））である。FIG. 14 is a plan view (FIG. (A)) and a front view (FIG. (B)) showing a general fatigue sensor 1Z.
１Ａ〜１Ｅ・１Ｚ 疲労センサー（測定用ゲージ） ２Ａ〜２Ｅ・２Ｚ 金属箔 ２ａ 減厚部 ３ スリット ５Ａ〜５Ｅ・５ ベース材 Ｍ１〜Ｍ６・Ｍ 部材（被測定部材） １１Ａ〜１１Ｆ 中間板 1A-1E ・ 1Z Fatigue sensor (measurement gauge) 2A-2E / 2Z metal foil 2a Reduced thickness part 3 slits 5A-5E ・ 5 Base material M1 to M6 ・ M member (measured member) 11A-11F Intermediate plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山地 成一 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 (72)発明者 村岸 治 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 Ｆターム(参考） 2G050 AA01 BA12 DA03 EA10 EB01 EC06 2G061 AB05 BA03 CB00 DA20 EA04 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Seiichi Yamaji 1-1 Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries Akashi Factory Co., Ltd. (72) Inventor Osamu Muragishi 1-1 Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries Akashi Factory Co., Ltd. F-term (reference) 2G050 AA01 BA12 DA03 EA10 EB01 EC06 2G061 AB05 BA03 CB00 DA20 EA04
Claims (7)
態を測定する測定用ゲージであって、 貼り付けられる部分に沿う曲面に形成されていることを
特徴とする測定用ゲージ。1. A measuring gauge which is attached to the surface of a member to measure the state of the member, wherein the measuring gauge is formed on a curved surface along the portion to be attached.
その周方向の引張力を受けるべく、凹状の部分に沿う曲
面が両端部に形成されているとともに、それらの間に平
面部分が形成されていることを特徴とする請求項１に記
載した測定用ゲージ。2. A curved surface is formed at both ends along the concave portion so as to be attached to the concave portion on the surface of the member and receive the tensile force in the circumferential direction thereof, and a flat portion is formed between them. The measuring gauge according to claim 1, wherein the measuring gauge is provided.
２に記載の測定用ゲージであって該当部分の表面に沿う
曲面を有するものを貼り付けることを特徴とする測定用
ゲージの使用方法。3. The method for using a measuring gauge according to claim 1, wherein the measuring gauge according to claim 1 or 2 having a curved surface along the surface of the corresponding portion is attached to the surface of the member to be measured. .
２に記載の測定用ゲージであってスリット付きの金属箔
が当該スリットをはさむ両側位置でベース材の表面上に
固着されてなる疲労センサーを、金属箔に引張力をかけ
る向きに弾性変形させたうえで貼り付けることを特徴と
する測定用ゲージの使用方法。4. The fatigue of the measuring gauge according to claim 1, wherein the metal foil with slits is fixed to the surface of the base material at both sides of the slits on the surface of the member to be measured. A method of using a measuring gauge, characterized in that a sensor is elastically deformed in a direction in which a tensile force is applied to a metal foil and then attached to the metal foil.
の表面に固着され得る曲面であり上面が平面である中間
板を取り付け、その中間板の上面に平面状の測定用ゲー
ジを貼り付けることを特徴とする測定用ゲージの使用方
法。5. An intermediate plate, whose bottom surface is a curved surface and whose top surface is a flat surface, can be attached to the surface of the corresponding portion, is attached to the surface of the member to be measured, and a planar measuring gauge is attached to the top surface of the intermediate plate. A method of using a measuring gauge, which is characterized in that
の表面に固着され得る曲面であり上面が他の曲面である
中間板を取り付け、その中間板の上面に請求項１または
２に記載の測定用ゲージを貼り付けることを特徴とする
測定用ゲージの使用方法。6. The intermediate plate having a curved surface, the bottom surface of which can be fixed to the surface of a corresponding portion, and the upper surface, which is another curved surface, is attached to the surface of the member to be measured, and the upper surface of the intermediate plate according to claim 1 or 2. A method for using a measuring gauge, which is characterized in that the measuring gauge is attached.
分の曲率に応じて、当該ゲージの出力に、当該部分の曲
率とゲージの曲率とが異なることを補正する処理、また
は当該部分の変化とゲージの変化とが異なることを補正
する処理を加えることを特徴とする請求項３〜６のいず
れかに記載した測定用ゲージの使用方法。7. A process of correcting the difference between the curvature of the portion and the curvature of the gauge in the output of the gauge according to the curvature of the portion to which the measuring gauge is attached, or a change in the portion. The method of using the measuring gauge according to any one of claims 3 to 6, characterized by adding a process for correcting that the change in the gauge is different.
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| JP2002103961A JP3920689B2 (en) | 2002-04-05 | 2002-04-05 | Measuring gauge and its usage |
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|---|---|---|---|
| JP2002103961A JP3920689B2 (en) | 2002-04-05 | 2002-04-05 | Measuring gauge and its usage |
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| JP3920689B2 JP3920689B2 (en) | 2007-05-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013210312A (en) * | 2012-03-30 | 2013-10-10 | Nippon Steel & Sumitomo Metal | Test jig for arcuate tester, stress testing machine and stress testing method |
| JP2014173926A (en) * | 2013-03-07 | 2014-09-22 | Nippon Steel & Sumitomo Metal | Manufacturing method of distortion type corrosion sensor and corrosion measurement method using distortion type corrosion sensor |
| JP2018537638A (en) * | 2015-09-24 | 2018-12-20 | レンロック ホールディングズ エルエルシーＬｅｎｌｏｋ Ｈｏｌｄｉｎｇｓ， ＬＬＣ | Pipe fitting with sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101954836B1 (en) * | 2017-08-31 | 2019-03-06 | 삼성중공업 주식회사 | Sensor module detachable device |
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| EP3353456A4 (en) * | 2015-09-24 | 2019-09-18 | Lenlok Holdings, LLC | Pipe fitting with sensor |
| US10663093B2 (en) | 2015-09-24 | 2020-05-26 | Lenlock Holdings, Llc | Pipe fitting with sensor |
| AU2019257498B2 (en) * | 2015-09-24 | 2021-10-21 | Lenlok Holdings, Llc | Pipe fitting with sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3920689B2 (en) | 2007-05-30 |
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