JP3313165B2 - Method of bonding fiber-reinforced plastic member and method of detecting defective bonding of fiber-reinforced plastic member containing adhesive layer - Google Patents
Method of bonding fiber-reinforced plastic member and method of detecting defective bonding of fiber-reinforced plastic member containing adhesive layerInfo
- Publication number
- JP3313165B2 JP3313165B2 JP33657692A JP33657692A JP3313165B2 JP 3313165 B2 JP3313165 B2 JP 3313165B2 JP 33657692 A JP33657692 A JP 33657692A JP 33657692 A JP33657692 A JP 33657692A JP 3313165 B2 JP3313165 B2 JP 3313165B2
- Authority
- JP
- Japan
- Prior art keywords
- bonding
- adhesive layer
- fiber
- reinforced plastic
- adhesive
- 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 - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、繊維強化プラスチック
部材を強固に接着する方法及びその接着部における接着
不良を検知する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for firmly bonding a fiber reinforced plastic member and a method for detecting a bonding failure at a bonded portion.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】繊維強
化プラスチック部材同士を接着剤によって接着する場
合、その接着部における強度を向上させるために、接着
面全体に一定の厚みを有し、かつ、欠落等の接着不良が
ない接着層を形成する必要がある。また、その接着層は
薄層であることが好ましい。2. Description of the Related Art When fiber-reinforced plastic members are bonded to each other with an adhesive, in order to improve the strength at the bonding portion, the entire bonding surface has a certain thickness, and It is necessary to form an adhesive layer free from poor adhesion such as chipping. Further, the adhesive layer is preferably a thin layer.
【０００３】従来より、接着層を均一な薄層に形成する
ために、ガラスビーズ等のフィラー材を接着剤に混入す
る方法が採られていた。接着層の厚さはガラスビーズの
混入体積率により定量化されるため、これを接着剤に適
量混入することにより一定の厚みを有する薄層を形成す
ることができる。しかしながら、この方法を用いても接
着不良を防止することは困難である。Conventionally, a method of mixing a filler material such as glass beads into an adhesive has been adopted in order to form the adhesive layer into a uniform thin layer. Since the thickness of the adhesive layer is quantified by the mixing volume ratio of the glass beads, a thin layer having a certain thickness can be formed by mixing an appropriate amount of this into the adhesive. However, even with this method, it is difficult to prevent poor adhesion.
【０００４】その接着不良の存在を検知するために、従
来から超音波探傷法等が用いられているが、超音波探傷
法では、その原理上曲面や表面が粗い面等への適用が困
難である。また、上記のようにガラスビーズ等のフィラ
ー材を混入した接着剤に対して超音波探傷法を用いる
と、超音波が発散してしまうため検知が難しい。In order to detect the presence of the adhesion defect, an ultrasonic flaw detection method or the like has been conventionally used. However, in the ultrasonic flaw detection method, it is difficult to apply the method to a curved surface or a rough surface in principle. is there. Further, when the ultrasonic flaw detection method is used for the adhesive mixed with the filler material such as the glass beads as described above, the ultrasonic wave diverges, so that the detection is difficult.
【０００５】従って本発明の目的は、上記問題点を解消
し、繊維強化プラスチック部材を強固に接着することの
できる接着方法及びその接着部における接着不良を簡便
に検知することができる接着不良検知方法を提供するこ
とである。Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a bonding method capable of firmly bonding a fiber-reinforced plastic member and a bonding failure detecting method capable of easily detecting a bonding failure at the bonding portion. It is to provide.
【０００６】[0006]
【課題を解決するための手段】以上の目的に鑑み鋭意研
究の結果、本発明者等は、繊維強化プラスチック部材を
接着する際、接着層に応力−磁気特性を有するワイヤー
状磁性体を配設し、接着剤の硬化中にワイヤー状磁性体
に高周波の交流磁界を与えて磁歪振動させ、接着界面の
濡れ性を向上させることにより良好な接着層を形成で
き、繊維強化プラスチック部材を強固に接着できること
を発見した。また本発明者等は、応力−磁気特性を有す
るワイヤー状磁性体を配設した接着層の厚みを前記ワイ
ヤー状磁性体の直径とほぼ同じにした接着層含有繊維強
化プラスチック部材を製造し、前記ワイヤー状磁性体の
磁気特性の変化を測定することにより接着不良を検知で
きることを発見した。本発明は上記発見に基づき完成し
たものである。As a result of intensive studies in view of the above objects, the present inventors have found that when bonding a fiber-reinforced plastic member, a wire having a stress-magnetic property is formed on the bonding layer.
Jo magnetic material disposed, giving an AC magnetic field of high frequency is magnetostrictive vibrations in the wire-shaped magnetic material during curing of the adhesive, in forming a good adhesive layer by Rukoto to improve the wettability of the adhesive interface
And found that fiber reinforced plastic members can be firmly bonded. Also present inventors have stress - having a magnetic property
The thickness of the adhesive layer provided with the wire-shaped magnetic material
Adhesive layer-containing fiber strength almost equal to diameter of magnetic material
It has been discovered that by manufacturing a plasticized plastic member and measuring the change in the magnetic properties of the wire-shaped magnetic body , it is possible to detect the adhesion failure. The present invention has been completed based on the above findings.
【０００７】すなわち、繊維強化プラスチック部材同士
を、接着剤を用いた接着層により、前記接着層が実質的
に均一な厚みを有するように接着する本発明の方法は、
前記接着層に応力−磁気特性を有するワイヤー状磁性体
を配設するとともに、前記接着剤の硬化中に前記ワイヤ
ー状磁性体に高周波の交流磁界を与えて磁歪振動させ、
接着界面の濡れ性を向上させることを特徴とする。That is, fiber-reinforced plastic members
By the adhesive layer using an adhesive, the adhesive layer is substantially
The method of the present invention for bonding so as to have a uniform thickness
A wire-like magnetic material having stress-magnetic characteristics is provided on the adhesive layer, and the wire is hardened during the curing of the adhesive.
A high-frequency AC magnetic field is applied to the magnetic body to cause magnetostrictive vibration,
It is characterized by improving the wettability of the bonding interface .
【０００８】また本発明の接着層含有繊維強化プラスチ
ック部材の接着不良検知方法は、応力−磁気特性を有す
るワイヤー状磁性体を配設した接着層により繊維強化プ
ラスチック部材同士を接着し、もって前記接着層の厚み
を前記ワイヤー状磁性体の直径とほぼ同じにした接着層
含有繊維強化プラスチック部材を製造し、前記ワイヤー
状磁性体の磁気特性の変化を測定することを特徴とす
る。[0008] or adhesion failure detection method of the adhesive layer containing fiber-reinforced plastic member of the present invention, the stress - bonding the fiber-reinforced plastic members to each other by the adhesive layer which is disposed a wire-shaped magnetic body having magnetic properties, it has been the Adhesive layer thickness
Adhesive layer having a diameter substantially equal to the diameter of the wire-shaped magnetic body
Manufacture containing fiber reinforced plastic member, the wire
Measuring the change in the magnetic properties of the Jo magnetic features and Turkey.
【０００９】[0009]
【実施例及び作用】以下、本発明を詳細に説明する。な
お、繊維強化プラスチックを以下ＦＲＰという。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail. The fiber reinforced plastic is hereinafter referred to as FRP.
【００１０】一般に、接着剤を使用してＦＲＰ部材を接
着する場合、接着強度を高めるため、接着層を均一に、
かつ20μｍ程度の薄層となるように形成する必要があ
る。接着層を均一な薄層にするために、直径が10〜20μ
ｍ程度のガラスビーズ等のフィラーを接着剤に混入する
場合もある。なお、本明細書において「均一」とは、接
着剤が接着面全体にわたって一定の厚みを有し、接着面
に接着剤の欠落がないことを言う。In general, when an FRP member is bonded using an adhesive, the bonding layer is uniformly formed to increase the bonding strength.
Further, it is necessary to form a thin layer of about 20 μm. 10 ~ 20μ in diameter to make the adhesive layer uniform thin layer
In some cases, about m of filler such as glass beads is mixed into the adhesive. In this specification, “uniform” means that the adhesive has a constant thickness over the entire adhesive surface and that the adhesive does not drop off on the adhesive surface.
【００１１】しかし、接着時圧力のバラツキや空気の混
入等により接着層を均一な薄層に形成できない場合があ
る。また、上記のようにフィラーを混入した場合におい
ても、接着層を均一に形成することができない場合があ
る。However, there is a case where the adhesive layer cannot be formed into a uniform thin layer due to a variation in the pressure at the time of the adhesion or the mixing of air. Further, even when the filler is mixed as described above, the adhesive layer may not be formed uniformly.
【００１２】そこで、接着剤とＦＲＰ部材との濡れ性を
より向上させるために、本発明では、接着剤が形成する
接着層に応力−磁気特性を有するワイヤー状磁性体を配
設するとともに、接着剤の硬化中にワイヤー状磁性体に
高周波の交流磁界を与える。交流磁界を与えられたワイ
ヤー状磁性体は磁歪振動を起こすため、接着剤とＦＲＰ
部材との濡れ性が向上する。[0012] Therefore, in order to further improve the wettability between the adhesive and the FRP member, in the present invention, the stress in the adhesive layer the adhesive is formed - with arranging a wire-shaped magnetic body having magnetic properties, adhesion During the curing of the agent, a high-frequency alternating magnetic field is applied to the wire-shaped magnetic material. Y given an AC magnetic field
Since the magnetic material causes magnetostrictive vibration, adhesive and FRP
The wettability with the member is improved.
【００１３】本発明において、接着剤に配設するワイヤ
ー状磁性体には、後述する接着不良の検知を考慮して応
力により磁気特性（透磁率）が大きく変化する特性（以
下応力−磁気特性という）を有するFe系アモルファス合
金やFe−希土類系の超磁歪材等を使用する。Fe系アモル
ファス合金としては、 Fe − Si −Ｂ系のアモルファス
合金が好ましく、特にCrを１〜３原子％含有するアモル
ファス合金が好ましい。このようにCr元素を含有したア
モルファス合金は耐食性にも優れている。この耐食性の
向上は、膨潤する可能性のある接着剤を使用した場合に
接着層の延命化を図る上で好ましい。In the present invention, a wire disposed on an adhesive
The over-shaped magnetic, magnetic properties (magnetic permeability) greatly varying characteristics (hereinafter stress - as magnetic properties) due to the stress in consideration of the detection of adhesion failure to be described later of the Fe-based amorphous alloy or Fe- rare earth having Use giant magnetostrictive material. As the Fe-based amorphous alloy, an Fe-Si-B-based amorphous alloy is preferable, and an amorphous alloy containing 1 to 3 atomic% of Cr is particularly preferable. As described above, the amorphous alloy containing the Cr element has excellent corrosion resistance. This improvement in corrosion resistance is preferable from the viewpoint of extending the life of the adhesive layer when an adhesive that may swell is used.
【００１４】上記の応力−磁気特性を有するワイヤー状
磁性体としては、検知感度及び接着層における補強効果
を高める目的で長繊維（ワイヤー）状の磁歪材料を使用
するのが好ましい。また上記の応力−磁気特性を有する
ワイヤー状磁性体とともに、短繊維状、リボン状、フレ
ーク状、粒状、又は粉末状の磁歪材料からなるものを使
用してもよい。A wire having the above-mentioned stress-magnetic characteristics
As the magnetic material, it is preferable to use a long fiber (wire) -like magnetostrictive material for the purpose of enhancing the detection sensitivity and the reinforcing effect in the adhesive layer. Also has the above stress-magnetic characteristics
With wire-shaped magnetic, short fiber, ribbon-like, flake-like, may be used made of granular or powdered magnetostrictive material.
【００１５】上記磁性体の接着剤に対する配設比は、体
積比（以下V/f という) で0.5 〜50％、特に１〜10％と
するのが好ましい。V/f が0.5 ％未満では、透磁率の変
化を測定するのが困難となり、一方、V/f が50％を超え
ると、接着が困難となり、強度が低下する。The arrangement ratio of the magnetic substance to the adhesive is preferably 0.5 to 50%, more preferably 1 to 10% by volume (hereinafter referred to as V / f). When V / f is less than 0.5%, it is difficult to measure a change in magnetic permeability, while when V / f exceeds 50%, adhesion becomes difficult and strength is reduced.
【００１６】一方、ＦＲＰ部材を接着するには、液状の
接着剤を接着面に塗布する方法や、半ねり状の接着剤を
接着面間に挟む方法等、種々の方法を用いることができ
るが、接着工程の簡便化を図った場合、接着シートを使
用する方法を用いるのが好ましい。On the other hand, various methods can be used to bond the FRP member, such as a method of applying a liquid adhesive to the bonding surface and a method of sandwiching a semi-twisted adhesive between the bonding surfaces. In order to simplify the bonding process, it is preferable to use a method using an adhesive sheet.
【００１７】以下、応力−磁気特性を有するアモルファ
スワイヤーからなる磁性体を用い、接着方法として接着
シートを使用する方法を例にとって本発明を説明する。An amorphous material having stress-magnetic characteristics will be described below.
A magnetic body made of Swire, illustrating the present invention as an example how to use the adhesive sheet as a contact Chakuhoho.
【００１８】アモルファスワイヤーを用いる場合、ワイ
ヤーの直径を10〜 200μｍ、特に100 〜150 μｍとする
のが好ましい。ワイヤーの直径を10μｍ未満にするのは
作製上困難であり、また 200μｍを超えるものにする
と、アモルファス化が困難となる。When an amorphous wire is used, the diameter of the wire is preferably from 10 to 200 μm, particularly preferably from 100 to 150 μm. If the diameter of the wire is less than 10 μm, it is difficult to manufacture, and if it exceeds 200 μm, it becomes difficult to make the wire amorphous.
【００１９】最初に、アモルファスワイヤーを一方向へ
並べるか、あるいは織布状にする。アモルファスワイヤ
ー間のピッチは300 μｍ程度にするのが好ましい。次
に、上記アモルファスワイヤーに接着剤を含浸させる。
本発明において使用する接着剤は、フェノール樹脂、シ
アン系樹脂及びポリイミド系樹脂等が挙げられるが、接
着シートとして使用するには、熱硬化性エポキシ樹脂や
熱可塑性エポキシ樹脂等を使用するのが好ましい。接着
剤を十分に含浸させた後、乾燥させ、接着シートとす
る。そのとき、接着シートは0.15〜0.2 mmの厚さに形成
するのが好ましい。First, the amorphous wires are arranged in one direction or are woven. The pitch between the amorphous wires is preferably about 300 μm. Next, the amorphous wire is impregnated with an adhesive.
The adhesive used in the present invention includes phenolic resins, cyan resins and polyimide resins, but for use as an adhesive sheet, it is preferable to use a thermosetting epoxy resin or a thermoplastic epoxy resin. . After the adhesive is sufficiently impregnated, it is dried to obtain an adhesive sheet. At this time, the adhesive sheet is preferably formed to have a thickness of 0.15 to 0.2 mm.
【００２０】ＦＲＰ部材を接着するには、まず、ＦＲＰ
部材の接着面間に接着シートを設置する。アモルファス
ワイヤーの繊維軸の配向性については、強度の観点から
ＦＲＰ部材中の強化繊維の方向と同じ方向にするのが好
ましい。To bond the FRP member, first, the FRP
An adhesive sheet is placed between the adhesive surfaces of the members. It is preferable that the orientation of the fiber axis of the amorphous wire be the same as the direction of the reinforcing fibers in the FRP member from the viewpoint of strength.
【００２１】次に、ＦＲＰ部材の接着面に垂直の方向に
圧力を加えながら電気オーブン等により加熱する。圧力
を加えることにより、接着層をほぼアモルファスワイヤ
ーの直径程度の薄層にすることができる。圧力の大きさ
は、４〜６kg/cm 2 とするのが好ましい。Next, the FRP member is heated by an electric oven or the like while applying pressure in a direction perpendicular to the bonding surface. By applying pressure, the adhesive layer can be made as thin as about the diameter of an amorphous wire. The magnitude of the pressure is preferably 4 to 6 kg / cm 2 .
【００２２】本発明では、接着層とＦＲＰ部材との接着
強度を向上させるため、接着シートの硬化中に、接着シ
ートに配設したアモルファスワイヤーに高周波の交流磁
界を与える。具体的には後述する磁気センサーを用いれ
ばよく、周波数は0.5 〜50kHz とし、好ましくは、１〜
２kHz とする。交流磁界を与えられたアモルファスワイ
ヤーは磁歪振動を起こし、接着剤とＦＲＰ部材との濡れ
性を向上させ、接着不良の発生を低下させることができ
る。In the present invention, a high-frequency AC magnetic field is applied to the amorphous wire disposed on the adhesive sheet during the curing of the adhesive sheet in order to improve the adhesive strength between the adhesive layer and the FRP member. Specifically, a magnetic sensor described later may be used, and the frequency is set to 0.5 to 50 kHz, preferably 1 to 50 kHz.
2 kHz. The amorphous wire to which the AC magnetic field is applied causes magnetostrictive vibration, improves the wettability between the adhesive and the FRP member, and can reduce the occurrence of poor adhesion.
【００２３】接着剤の硬化後、アモルファスワイヤーは
接着層の補強材にもなり、ＦＲＰ部材の接着部分におけ
る強度を高めることができる。After the curing of the adhesive, the amorphous wire also serves as a reinforcing material for the adhesive layer, and can increase the strength at the bonding portion of the FRP member.
【００２４】以上、アモルファスワイヤー及び接着シー
トを例にとって説明したが、磁性体にフレーク状、粒
状、又は粉末状等の磁歪材料を使用し、接着剤に液体状
又は半練り状等のものを使用した場合、あらかじめ接着
剤に磁歪材料を混入したものを接着面に塗布して接着す
る方法も考えられる。In the above description, the amorphous wire and the adhesive sheet have been described as examples. However, a magnetostrictive material such as flake, granular, or powder is used for the magnetic material, and a liquid or semi-milled material is used for the adhesive. In this case, a method in which a material obtained by mixing a magnetostrictive material in an adhesive in advance is applied to the bonding surface and bonded is also conceivable.
【００２５】以下、上記方法によって接着したＦＲＰ部
材に発生した接着不良を検知する本発明の方法を詳述す
る。Hereinafter, the method of the present invention for detecting the adhesion failure generated in the FRP member bonded by the above method will be described in detail.
【００２６】接着剤に配設されたアモルファスワイヤー
には、接着剤の硬化及び収縮により、周囲から数kg/mm
2 程度の応力がかかる。しかし、接着剤の欠落等の接着
不良が発生した場合、その部位におけるアモルファスワ
イヤーにかかる応力は正常部位に比べて小さい。そこ
で、応力−磁気特性を有するアモルファスワイヤーの磁
気特性（透磁率）の変化を測定すれば、接着不良を検知
することができる。The amorphous wire disposed on the adhesive has a few kg / mm from the surroundings due to the curing and shrinkage of the adhesive.
About 2 stresses are applied. However, when an adhesion failure such as a lack of adhesive occurs, the stress applied to the amorphous wire at that site is smaller than that at a normal site. Thus, by measuring the change in the magnetic characteristics (permeability) of the amorphous wire having the stress-magnetic characteristics, it is possible to detect the adhesion failure.
【００２７】アモルファスワイヤーの透磁率の変化の検
知は、磁気センサーを用いて行うことができる。磁気セ
ンサーは、アモルファスワイヤーの透磁率の変化を電圧
やインダクタンス、あるいは共振振動の変化等を測定す
ることにより検知できるものであれば、いかなる構成の
ものでもよい。The change in the magnetic permeability of the amorphous wire can be detected using a magnetic sensor. The magnetic sensor may have any configuration as long as it can detect a change in magnetic permeability of the amorphous wire by measuring a change in voltage, inductance, or resonance vibration.
【００２８】本発明に使用できる磁気センサーの一例を
図１に示す。磁気センサーは、カバー部材６a 、６b 内
にＵ字形の第１及び第２のフェライトコア３a 、３b が
それぞれ固定されている。第１フェライトコア３a に第
１励磁コイル４a 及び第１検知コイル５a が別々に巻装
され、また第２フェライトコア３b に第２励磁コイル４
b 及び第２検知コイル５b が別々に巻装されている。第
１、第２励磁コイル４a 、４b は高周波電流用電源７に
接続され、また第１、第２検知コイル５a 、５b は検知
器８に接続されている。FIG. 1 shows an example of a magnetic sensor that can be used in the present invention. In the magnetic sensor, U-shaped first and second ferrite cores 3a and 3b are fixed in cover members 6a and 6b, respectively. The first exciting coil 4a and the first detecting coil 5a are separately wound around the first ferrite core 3a, and the second exciting coil 4a is wound around the second ferrite core 3b.
b and the second detection coil 5b are separately wound. The first and second excitation coils 4a and 4b are connected to a high-frequency current power supply 7, and the first and second detection coils 5a and 5b are connected to a detector 8.
【００２９】測定を行うには、まず、接着層１a をはさ
んでいるＦＲＰ部材１の両表層にセンシングコイル２を
接触させるか、あるいは非接触の状態で設置する。第
１、第２励磁コイル４a 、４b に高周波電流用電源７か
ら高周波電流を供給すると、点線Ａで示される磁力線が
接着層を貫通して閉磁路を形成する。これにより、誘起
された起電力を第２検知コイル５a 、５b で検知し、こ
れを相互インダクタンス（以下インダクタンスという）
として検知器８で測定する。To perform the measurement, first, the sensing coil 2 is brought into contact with both surface layers of the FRP member 1 sandwiching the adhesive layer 1a, or is installed in a non-contact state. When a high-frequency current is supplied from the high-frequency current power supply 7 to the first and second excitation coils 4a and 4b, magnetic lines of force indicated by dotted lines A penetrate the adhesive layer to form a closed magnetic path. Thus, the induced electromotive force is detected by the second detection coils 5a and 5b, and this is detected as a mutual inductance (hereinafter referred to as an inductance).
Is measured by the detector 8.
【００３０】前記インダクタンスは接着層内に配設され
たアモルファスワイヤーの透磁率の大小、つまり発生し
ている応力の大小によって変化する。このため、インダ
クタンスの変化を測定することにより、間接的に接着不
良を検知することができる。The inductance changes according to the magnitude of the magnetic permeability of the amorphous wire provided in the adhesive layer, that is, the magnitude of the generated stress. For this reason, by measuring the change in the inductance, it is possible to indirectly detect the adhesion failure.
【００３１】検知感度の点では、後述するピックアップ
型センサーより図１に示すような閉路式のセンサーを用
いて測定するのが好ましい。In terms of detection sensitivity, it is preferable to use a closed-type sensor as shown in FIG. 1 for measurement rather than a pickup-type sensor described later.
【００３２】別の磁気センサーとして、例えば図２に示
すような市販のピックアップ型センサーを用いることが
できる。このピックアップ型センサーは、平面状の励磁
コイル（図示せず）と平面状の検知コイル（図示せず）
とからなるセンシングコイル９とリード線10を有する。As another magnetic sensor, for example, a commercially available pickup type sensor as shown in FIG. 2 can be used. This pickup type sensor has a planar excitation coil (not shown) and a planar detection coil (not shown).
And a lead wire 10.
【００３３】このセンシングコイル９をＦＲＰ部材にお
ける接着部位の表層に接触させてあるいは非接触の状態
で設置し、センシングコイル９に高周波電流を供給する
と、点線Ｂの磁力線に示すような磁界が接着層を通過す
るように形成されるので、上記の閉路式の磁気センサー
の場合と同様にインダクタンスの変化を測定する。この
ピックアップ型センサーを用いると、複雑な形状の接着
部位における接着不良の検知も可能である。When the sensing coil 9 is set in contact with or not in contact with the surface layer of the bonding portion of the FRP member, and a high-frequency current is supplied to the sensing coil 9, a magnetic field as indicated by a magnetic field line indicated by a dotted line B is generated. Therefore, the change in inductance is measured in the same manner as in the case of the above-described closed-circuit type magnetic sensor. By using this pickup type sensor, it is possible to detect an adhesion failure at an adhesion portion having a complicated shape.
【００３４】さらに別の磁気センサーとしては、図３に
示すように、ＦＲＰ部材における接着部分の全周に巻装
したセンシングコイル11を有するセンサーを用いてもよ
い。この磁気センサーは、励磁コイル（図示せず）と検
知コイル（図示せず）とからなるセンシングコイル11と
リード線12を有し、センシングコイル11はＦＲＰ部材の
全周に接触させて設置してもよいし、非接触の状態にし
て設置してもよい。As another magnetic sensor, as shown in FIG. 3, a sensor having a sensing coil 11 wound around the entire periphery of the bonded portion of the FRP member may be used. This magnetic sensor has a sensing coil 11 composed of an excitation coil (not shown) and a detection coil (not shown) and a lead wire 12, and the sensing coil 11 is installed in contact with the entire circumference of the FRP member. It may be installed in a non-contact state.
【００３５】励磁コイルに高周波電流を供給すると、点
線Ｃの磁力線に示すような磁界がＦＲＰ部材を通過する
ように形成されるので、上記の２種の磁気センサーの場
合と同様にインダクタンスの変化を測定する。When a high-frequency current is supplied to the exciting coil, a magnetic field as shown by a magnetic field line indicated by a dotted line C is formed so as to pass through the FRP member. Measure.
【００３６】以下、本発明を具体的実施例に基づき詳細
に説明する。実施例１ Fe−Si−Ｂ系アモルファス合金製のワイヤー（直径20μ
ｍ）を平行に0.3 mmピッチで配置したものに熱硬化性エ
ポキシ樹脂を含浸させ、0.2 mm厚の接着シートを作製し
た。そのとき、アモルファスワイヤーのエポキシ樹脂に
対するV/f は22％であった。Hereinafter, the present invention will be described in detail with reference to specific examples. Example 1 Wire made of Fe-Si-B amorphous alloy (diameter 20μ)
m) were arranged in parallel at a pitch of 0.3 mm and impregnated with a thermosetting epoxy resin to produce a 0.2 mm thick adhesive sheet. At that time, V / f of the amorphous wire with respect to the epoxy resin was 22%.
【００３７】次に、接着シート内に厚さ40μｍ、面積40
0 mm2 のテフロンシートをモールドした後、マトリック
スがエポキシ樹脂からなり、強化繊維がカーボン繊維か
らなる２枚のＦＲＰ部材（150 mm×100 mm×２mm）によ
って接着シートを挟み、５kg/cm 2 の圧力を接着面に対
して垂直に加え、120 ℃で加熱して接着シートを硬化さ
せた。このようにして、人工的に接着不良を発生させた
試験片を得た。Next, the adhesive sheet has a thickness of 40 μm and an area of 40 μm.
After molding a 0 mm 2 Teflon sheet, the adhesive sheet is sandwiched between two FRP members (150 mm × 100 mm × 2 mm) in which the matrix is made of epoxy resin and the reinforcing fibers are made of carbon fiber, and 5 kg / cm 2 Pressure was applied perpendicular to the adhesive surface and heated at 120 ° C. to cure the adhesive sheet. In this way, a test piece artificially causing adhesion failure was obtained.
【００３８】得られた試験片の接着不良検知を行うため
に、図２に示すような磁気センサーを使用し、励磁コイ
ルを以下の励磁条件で励磁させるとともに、センシング
コイル９を試験片の表面を移動させた。各部位における
アモルファスワイヤーの透磁率の変化を、検出コイルに
発生する出力電圧としてデジタルボルトメータを用いて
測定した。測定の結果を図４に示す出力電圧マップとし
て表す。In order to detect the adhesion failure of the obtained test piece, a magnetic sensor as shown in FIG. 2 was used to excite the excitation coil under the following excitation conditions, and the sensing coil 9 was moved to the surface of the test piece. Moved. The change in the magnetic permeability of the amorphous wire at each site was measured using a digital voltmeter as an output voltage generated in the detection coil. The result of the measurement is represented as an output voltage map shown in FIG.
【００３９】励磁条件 励磁コイル ：200 ターン（100 ターン／mm） 検出コイル ：200 ターン（100 ターン／mm） 周波数 ：１kHz 波形 ：正弦波 励磁電圧 ：15ＶP-P Excitation condition Exciting coil: 200 turns (100 turns / mm) Detection coil: 200 turns (100 turns / mm) Frequency: 1 kHz Waveform: sine wave Exciting voltage: 15 V PP
【００４０】図４から明らかなように、接着層に磁性体
を配設することにより、接着不良の検知を容易に行うこ
とができる。As is apparent from FIG. 4, by arranging a magnetic material on the adhesive layer, it is possible to easily detect a defective adhesion.
【００４１】実施例２ 実施例１で得た試験片を用いて、界面セン断強度を測定
した。測定結果は17.05MPaであった。 Example 2 Using the test piece obtained in Example 1, the interface shear strength was measured. The measurement result was 17.05 MPa.
【００４２】比較例１ 熱硬化性エポキシ樹脂にガラスフィラーを混入し、0.2
mm厚の接着シートを作製した。その接着シートと、実施
例１と同じＦＲＰ部材とを用いて実施例１と同様にして
試験片を作製し、試験片の界面セン断強度を測定した。
測定結果は16.67MPaであった。 Comparative Example 1 A glass filler was mixed in a thermosetting epoxy resin,
An adhesive sheet having a thickness of mm was produced. A test piece was prepared in the same manner as in Example 1 using the adhesive sheet and the same FRP member as in Example 1, and the interfacial shear strength of the test piece was measured.
The measurement result was 16.67 MPa.
【００４３】実施例２及び比較例１から明らかなよう
に、接着層にアモルファスワイヤーを配設して接着した
ＦＲＰ部材は、接着層にガラスフィラーを混入して接着
したＦＲＰ部材よりも接着強度が高い。As is evident from Example 2 and Comparative Example 1, the FRP member in which the amorphous layer was disposed in the adhesive layer and adhered had a higher adhesive strength than the FRP member in which a glass filler was mixed into the adhesive layer and adhered. high.
【００４４】[0044]
【発明の効果】以上詳述したように、本発明の方法によ
れば、接着層に応力−磁気特性を有するワイヤー状磁性
体を配設するとともに、ワイヤー状磁性体に高周波の交
流磁界を与えて磁歪振動させ、接着界面の濡れ性を向上
させることにより接着不良の発生を低下させることがで
きる。また、ワイヤー状磁性体は接着層の補強材になる
とともに、接着層を一定の厚みを有する薄層に形成する
ことができるため、接着強度を高めることができる。As described above in detail, according to the method of the present invention, a wire-like magnetic material having a stress-magnetic property in an adhesive layer is provided.
In addition to disposing the body , a high-frequency AC magnetic field is applied to the wire-shaped magnetic body to cause magnetostrictive vibration and improve the wettability of the bonding interface, thereby reducing the occurrence of poor bonding. In addition, the wire-shaped magnetic material can be used as a reinforcing material for the adhesive layer, and the adhesive layer can be formed as a thin layer having a certain thickness, so that the adhesive strength can be increased.
【００４５】また、本発明の方法によれば、接着層に配
設したワイヤー状磁性体の磁気特性の変化を測定するこ
とにより、接着不良を検知できる。さらに、磁気特性の
測定はＦＲＰ部材に非接触で行うことができるので、複
雑な形状における接着部位に適用することができる。Further, according to the method of the present invention, it is possible to detect a poor bonding by measuring the change in the magnetic properties of the wire-shaped magnetic material provided on the bonding layer. Further, since the measurement of the magnetic characteristics can be performed without contacting the FRP member, it can be applied to an adhesive portion having a complicated shape.
【図１】本発明の一実施例による接着不良検知方法を示
す概略図である。FIG. 1 is a schematic view illustrating a method for detecting an adhesion failure according to an embodiment of the present invention.
【図２】本発明の他の実施例による接着不良検知方法を
示す概略図である。FIG. 2 is a schematic view illustrating a method of detecting an adhesion failure according to another embodiment of the present invention.
【図３】本発明の他の実施例による接着不良検知方法を
示す概略図である。FIG. 3 is a schematic view showing a method for detecting an adhesion failure according to another embodiment of the present invention.
【図４】ＦＲＰ試験片の各部位をスキャニングして測定
した出力電圧をグラフにした出力電圧マップである。FIG. 4 is an output voltage map showing a graph of an output voltage measured by scanning each part of an FRP test piece.
１・・・ＦＲＰ部材 １a ・・・接着層 ２、９、11・・・センシングコイル ３a 、３b ・・・フェライトコア ４a 、４b ・・・励磁コイル ５a 、５b ・・・検出コイル ６a 、６b ・・・カバー部材 ７・・・高周波電流用電源 ８・・・検出計 10、12・・・リード線 Ａ、Ｂ、Ｃ・・・磁力線 DESCRIPTION OF SYMBOLS 1 ... FRP member 1a ... Adhesion layer 2, 9, 11 ... Sensing coil 3a, 3b ... Ferrite core 4a, 4b ... Excitation coil 5a, 5b ... Detection coil 6a, 6b. ..Cover member 7 Power supply for high-frequency current 8 Detector 10, 12 Lead wire A, B, C Magnetic field line
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｂ２９Ｋ 105:06 Ｂ２９Ｋ 105:06 (56)参考文献 特開 平３−35136（ＪＰ，Ａ) 特開 平２−271227（ＪＰ，Ａ) 特開 平２−220827（ＪＰ，Ａ) 特開 平３−221434（ＪＰ，Ａ) 特開 平２−63724（ＪＰ，Ａ) 特開 平５−142130（ＪＰ，Ａ) 特開 平６−126848（ＪＰ，Ａ) 特開 平６−130039（ＪＰ，Ａ) 特開 平６−160355（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 65/00 - 65/82 G01L 1/00 G01L 1/12 G01N 27/72 - 27/90 ──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 7 Identification symbol FI // B29K 105: 06 B29K 105: 06 (56) References JP-A-3-35136 (JP, A) JP-A-2-271227 (JP, A) JP-A-2-22027 (JP, A) JP-A-3-221434 (JP, A) JP-A-2-63724 (JP, A) JP-A-5-142130 (JP, A) JP-A-6-126848 (JP, A) JP-A-6-130039 (JP, A) JP-A-6-160355 (JP, A) (58) Fields studied (Int. Cl. 7 , DB name) B29C 65 / 00-65/82 G01L 1/00 G01L 1/12 G01N 27/72-27/90
Claims (3)
剤を用いた接着層により、前記接着層が実質的に均一な
厚みを有するように接着する方法において、前記接着層
に応力−磁気特性を有するワイヤー状磁性体を配設する
とともに、前記接着剤の硬化中に前記ワイヤー状磁性体
に高周波の交流磁界を与えて磁歪振動させ、接着界面の
濡れ性を向上させることを特徴とする繊維強化プラスチ
ック部材の接着方法。1. A method for bonding fiber-reinforced plastic members to each other.
The adhesive layer using the agent makes the adhesive layer substantially uniform.
A method of bonding so as to have a thickness, stress in the adhesive layer - arranging a wire-shaped magnetic body having magnetic properties
Together with the wire-shaped magnetic material during the curing of the adhesive.
A high-frequency AC magnetic field to cause magnetostrictive vibration,
Fiber-reinforced plastic characterized by improved wettability
Method of bonding the lock members .
部材の接着方法において、前記接着層の厚みを前記ワイ
ヤー状磁性体の直径とほぼ同じにすることを特徴とする
繊維強化プラスチック部材の接着方法。 2. The fiber-reinforced plastic according to claim 1,
In the method for bonding members, the thickness of the bonding layer
Characterized in that the diameter is approximately the same as the diameter of the magnetic material
A method for bonding fiber reinforced plastic members.
化プラスチック部材の接着不良検知方法において、応力
−磁気特性を有するワイヤー状磁性体を配設した接着層
により繊維強化プラスチック部材同士を接着し、もって
前記接着層の厚みを前記ワイヤー状磁性体の直径とほぼ
同じにした接着層含有繊維強化プラスチック部材を製造
し、前記ワイヤー状磁性体の磁気特性の変化を測定する
ことを特徴とする接着層含有繊維強化プラスチック部材
の接着不良検知方法。3. Fiber strength containing an adhesive layer using an adhesive
Reduction in adhesion failure detection method for a plastic member, the stress - bonding the fiber-reinforced plastic members to each other by the adhesive layer which is disposed a wire-shaped magnetic body having magnetic properties, have been
The thickness of the adhesive layer is substantially equal to the diameter of the wire-shaped magnetic body.
Manufactures the same adhesive layer-containing fiber reinforced plastic members
And, it measures the change in the magnetic properties of the wire-shaped magnetic
Adhesive layer containing fiber-reinforced plastic member, wherein the this
Adhesion failure detection method of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33657692A JP3313165B2 (en) | 1992-11-24 | 1992-11-24 | Method of bonding fiber-reinforced plastic member and method of detecting defective bonding of fiber-reinforced plastic member containing adhesive layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33657692A JP3313165B2 (en) | 1992-11-24 | 1992-11-24 | Method of bonding fiber-reinforced plastic member and method of detecting defective bonding of fiber-reinforced plastic member containing adhesive layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06155583A JPH06155583A (en) | 1994-06-03 |
| JP3313165B2 true JP3313165B2 (en) | 2002-08-12 |
Family
ID=18300578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33657692A Expired - Fee Related JP3313165B2 (en) | 1992-11-24 | 1992-11-24 | Method of bonding fiber-reinforced plastic member and method of detecting defective bonding of fiber-reinforced plastic member containing adhesive layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3313165B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640088A (en) * | 1994-01-26 | 1997-06-17 | Honda Giken Kogyo Kabushki Kaisha | Process for measuring stress of magnetic materials, FRP member whose internal damage is detectable, and adhesive layer forming adhesive member whose internal defection is detectable |
| JP4586124B2 (en) * | 2003-07-10 | 2010-11-24 | 奇美電子股▲ふん▼有限公司 | Non-contact inspection method and non-contact inspection device for electrical connection |
| US8343298B2 (en) | 2007-12-13 | 2013-01-01 | The Boeing Company | Aircraft structures bonded with adhesive including magnetostrictive material |
| US8250928B2 (en) * | 2008-07-09 | 2012-08-28 | The Boeing Company | Measurement of strain in an adhesively bonded joint including magnetostrictive material |
| US9042516B2 (en) | 2012-10-09 | 2015-05-26 | The Boeing Company | Nondestructive examination of structures having embedded particles |
| CN105527338A (en) * | 2015-10-26 | 2016-04-27 | 华南理工大学 | Metal wire rope on-line monitoring method and device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941937A (en) * | 1988-04-28 | 1990-07-17 | The Budd Company | Method for bonding reinforcement members to FRP panels |
| JP2613469B2 (en) * | 1989-02-23 | 1997-05-28 | 東亞合成株式会社 | Medium for high frequency induction heating bonding |
| JP2657316B2 (en) * | 1989-04-13 | 1997-09-24 | 本田技研工業株式会社 | Fiber reinforced member with ability to detect stress |
| JPH0335136A (en) * | 1989-07-03 | 1991-02-15 | Fujitsu Ltd | Method for measuring internal stress and strain of resin composition |
| JP2880226B2 (en) * | 1990-01-29 | 1999-04-05 | 鬼怒川ゴム工業株式会社 | Bonding method between FRP material and vulcanized rubber |
| JP3197925B2 (en) * | 1991-11-25 | 2001-08-13 | 本田技研工業株式会社 | Prior Fatigue Failure Detection Method for FRP Members |
| JPH06130039A (en) * | 1992-10-14 | 1994-05-13 | Honda Motor Co Ltd | Method of detecting defect of fiber-reinforced platic member |
| JP3165266B2 (en) * | 1992-10-14 | 2001-05-14 | 本田技研工業株式会社 | Fiber-reinforced plastic member capable of detecting swelling and method for detecting the same |
| JP3148423B2 (en) * | 1992-11-20 | 2001-03-19 | 本田技研工業株式会社 | Defect detection method for fiber reinforced plastic members |
-
1992
- 1992-11-24 JP JP33657692A patent/JP3313165B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06155583A (en) | 1994-06-03 |
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