JP2010019660A - Test piece for shearing fatigue test - Google Patents

Test piece for shearing fatigue test Download PDF

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JP2010019660A
JP2010019660A JP2008179807A JP2008179807A JP2010019660A JP 2010019660 A JP2010019660 A JP 2010019660A JP 2008179807 A JP2008179807 A JP 2008179807A JP 2008179807 A JP2008179807 A JP 2008179807A JP 2010019660 A JP2010019660 A JP 2010019660A
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plate
plate portion
thin plate
members
test
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JP5094603B2 (en
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Yasuhiro Ban
康弘 伴
Kenichi Kurita
謙一 栗田
Yasutoshi Kishi
康敏 岸
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a test piece for a shearing fatigue test for obtaining an accurate test result. <P>SOLUTION: A pair of plate-like members 10 are equipped with plank parts 20 and sheet parts 30 made thinner than the plank parts 20. The plank parts 20 surround the sheet parts 30 and are provided so as to reach the other ends 10B of the plate-like members fixed to a testing machine. Accordingly, even if the sheet parts 30 are set to the same plate thickness as materials to be fastened by rivets 3, a pair of the plate-like members 10 (sheet parts 30) are prevented from being buckled with respect to compression load. As a result, in a case that a loading test of the compression load is performed, the accurate test result is obtained with respect to a fastening joint (a part where the backs of a pair of the plate-like members 10 are superposed one upon another to mutually bond the sheet parts 30 by the rivets 3) being a test target. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、せん断疲労用試験片に関し、特に、正確な試験結果を得ることができるせん断疲労用試験片に関するものである。   The present invention relates to a shear fatigue test piece, and more particularly to a shear fatigue test piece capable of obtaining an accurate test result.

従来から、板材同士をリベット、ファスナ等で結合した締結継手が所定の強度基準を満たすかどうかを確認するために、せん断疲労試験が行われている。かかるせん断疲労試験には、リベット、ファスナ等が締結される試験片が用いられる。このような従来の試験片１００を図３に図示する。図３は、試験片１００を用いてせん断疲労試験が行われる状態を図示しており、図３（ａ）は、試験片１００の側面図であり、図３（ｂ）は、図３（ａ）のＩＩＩｂ−ＩＩＩｂ線における試験片１００の部分拡大断面図である。試験片１００は、被締結素材と同じ素材及び同じ板厚で構成された矩形状の板状部材で形成され、均一の板厚に設定されている。   Conventionally, a shear fatigue test has been performed in order to confirm whether or not a fastening joint in which plate members are joined with rivets, fasteners, or the like satisfies a predetermined strength standard. In the shear fatigue test, a test piece to which a rivet, a fastener or the like is fastened is used. Such a conventional test piece 100 is illustrated in FIG. FIG. 3 illustrates a state in which a shear fatigue test is performed using the test piece 100, FIG. 3A is a side view of the test piece 100, and FIG. It is a partial expanded sectional view of the test piece 100 in the IIIb-IIIb line | wire of (). The test piece 100 is formed of a rectangular plate-like member made of the same material and the same plate thickness as the material to be fastened, and is set to a uniform plate thickness.

図３に示すように、せん断疲労試験は、２枚の試験片１００の一端を重ね合わせてリベット１０３で締結すると共に合わせ板１０２が接合される他端を試験装置に固定し、試験片１００に対して、矢印ａで示す引張方向及び矢印ｂで示す圧縮方向に所定荷重を繰り返し負荷することにより行われている。   As shown in FIG. 3, in the shear fatigue test, one end of two test pieces 100 is overlapped and fastened with a rivet 103, and the other end to which a laminated plate 102 is joined is fixed to a test apparatus. On the other hand, it is performed by repeatedly applying a predetermined load in the tension direction indicated by the arrow a and the compression direction indicated by the arrow b.

かかるせん断疲労試験において、試験片１００が薄板の場合、矢印ｂで示す圧縮方向の所定荷重を試験片１００に負荷すると、試験片１００が座屈してしまう。これに対して、せん断疲労試験は、試験片１００が座屈した状態で行うことができないので、試験片１００が座屈しないような対策が必要となる。   In the shear fatigue test, when the test piece 100 is a thin plate, the test piece 100 is buckled when a predetermined load in the compression direction indicated by the arrow b is applied to the test piece 100. On the other hand, since the shear fatigue test cannot be performed in a state where the test piece 100 is buckled, it is necessary to take measures to prevent the test piece 100 from buckling.

かかる対策として、試験片１００の板厚を座屈しない板厚までに厚板化する（第１の従来技術）、試験片１００に引張方向のみの所定荷重を負荷する（第２の従来技術）、特許文献１に開示されるような座屈防止用治具を試験片１００に取り付ける（第３の従来技術）ということが行われていた。
実開昭６１―１０２８５１号 As a countermeasure for this, the thickness of the specimen 100 is increased to a thickness that does not buckle (first conventional technique), and a predetermined load only in the tensile direction is applied to the specimen 100 (second conventional technique). A buckling prevention jig as disclosed in Patent Document 1 is attached to the test piece 100 (third prior art).
Shokai 61-102851

しかしながら、上述した第１の従来技術では、試験片１００を厚板化すると、試験片１００が被締結素材の板厚と異なるため、締結継手について正確な試験結果を得ることができないという問題点があった。また、上述した第２の従来技術では、圧縮方向について試験を行うことができず、正確な試験結果が得られないという問題点があった。さらに、上述した第３の従来技術では、試験片１００が試験対象である締結継手とは別の継手構造を有することとなり、かかる別の継手構造が試験結果に影響を及ぼし、やはり締結継手について正確な試験結果を得ることができないという問題点があった。   However, in the first prior art described above, when the test piece 100 is made thicker, the test piece 100 is different from the plate thickness of the material to be fastened, so that an accurate test result cannot be obtained for the fastening joint. there were. In addition, the second prior art described above has a problem that a test cannot be performed in the compression direction, and an accurate test result cannot be obtained. Furthermore, in the third prior art described above, the test piece 100 has a joint structure different from the fastening joint to be tested, and this separate joint structure affects the test results, and the fastening joint is also accurate. There was a problem that it was impossible to obtain a proper test result.

本発明は上述した問題点を解決するためになされたものであり、正確な試験結果を得ることができるせん断疲労用試験片を提供することを目的としている。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a shear fatigue test piece capable of obtaining an accurate test result.

この目的を達成するために、請求項１記載のせん断疲労試験用試験片は、正面視矩形状に構成され一端同士が重ね合わされる一対の板状部材と、それら一対の板状部材の重ね合わされた部位を結合する締結部材とを備え、前記一対の板状部材の各他端が試験装置に固定され、その試験装置によって引張方向及び圧縮方向への荷重が繰り返し負荷されるものであって、前記一対の板状部材は、厚板部と、その厚板部よりも板厚が薄くされる薄板部とをそれぞれ備えると共に、前記板状部材の裏面側において、前記厚板部の裏面と薄板部の裏面とが同一の平面内に配設され、前記厚板部は、前記薄板部を囲繞すると共に前記試験装置に固定される他端まで連設され、前記一対の板状部材の裏面同士を重ね合わせ、前記薄板部同士を前記締結部材で結合している。   In order to achieve this object, a shear fatigue test specimen according to claim 1 is configured to have a rectangular shape in front view and a pair of plate-like members whose ends are overlapped with each other, and the pair of plate-like members are overlapped. Each of the pair of plate-like members is fixed to a test apparatus, and a load in the tensile direction and the compression direction is repeatedly applied by the test apparatus, The pair of plate-like members each include a thick plate portion and a thin plate portion whose thickness is thinner than that of the thick plate portion, and on the back side of the plate-like member, the back surface of the thick plate portion and the thin plate The thick plate portion surrounds the thin plate portion and is connected to the other end fixed to the test apparatus, and the back surfaces of the pair of plate-like members are And the thin plate portions are joined with the fastening member. It is engaged in.

請求項２記載のせん断疲労試験用試験片は、請求項１記載のせん断疲労試験用試験片において、前記一対の板状部材は、前記薄板部と前記厚板部とを連結する連結部を備え、その連結部は、前記薄板部から前記厚板部にかけて板厚が漸増されている。   The shear fatigue test specimen according to claim 2 is the shear fatigue test specimen according to claim 1, wherein the pair of plate-like members includes a connecting portion that connects the thin plate portion and the thick plate portion. The connecting portion has a plate thickness gradually increased from the thin plate portion to the thick plate portion.

請求項３記載のせん断疲労試験用試験片は、請求項１又は２に記載のせん断疲労試験用試験片において、前記薄板部は、前記締結部材が締結される取付穴が穿設され、その取付穴を中心とした正面視円形状に形成されている。   The test piece for shear fatigue test according to claim 3 is the test piece for shear fatigue test according to claim 1 or 2, wherein the thin plate portion is provided with a mounting hole for fastening the fastening member. It is formed in a circular shape when viewed from the front centering on the hole.

請求項１記載のせん断疲労試験用試験片によれば、正面視矩形状に構成される一対の板状部材の一端同士が重ね合わせられ、この重ね合わされた部位が締結部材で結合されると共に一対の板状部材の各他端が試験装置に固定され、試験装置によって引張方向及び圧縮方向への荷重が繰り返し負荷されることにより、一対の板状部材の締結部材で結合した部分（締結継手）についてせん断疲労試験が行われる。   According to the test piece for shear fatigue test according to claim 1, one end of the pair of plate-like members configured in a rectangular shape in front view is overlapped, and the overlapped portion is coupled by the fastening member and the pair. The other end of each plate-like member is fixed to a test device, and a load in a tensile direction and a compression direction is repeatedly applied by the test device, whereby a portion joined by a fastening member of a pair of plate-like members (fastening joint) Shear fatigue test is performed.

ここで、請求項１記載のせん断疲労試験用試験片によれば、一対の板状部材は、厚板部と、その厚板部よりも板厚が薄くされる薄板部とをそれぞれ備え、厚板部は、薄板部を囲繞すると共に試験装置に固定される他端まで連設されるので、薄板部を締結部材が締結される被締結素材と同じ板厚（薄板）に設定しても、一対の板状部材（薄板部）が座屈することを防止することができる。その結果、試験対象である締結継手について正確な試験結果を得ることができるという効果がある。   Here, according to the test piece for shear fatigue test according to claim 1, each of the pair of plate-like members includes a thick plate portion and a thin plate portion whose thickness is made thinner than the thick plate portion, The plate portion surrounds the thin plate portion and is connected to the other end fixed to the test apparatus. Therefore, even if the thin plate portion is set to the same plate thickness (thin plate) as the material to be fastened to which the fastening member is fastened, It is possible to prevent the pair of plate members (thin plate portions) from buckling. As a result, there is an effect that an accurate test result can be obtained for the fastening joint as a test target.

即ち、板状部材の裏面側において、厚板部の裏面と薄板部の裏面とが同一の平面内に配設されるので、板状部材の裏面が平坦状に形成される。よって、一対の板状部材の裏面同士を重ね合わせることができ、かかる薄板部同士を締結部材で結合するので、締結部材の周囲を被締結素材と同じ板厚とすることができる。従って、被締結素材の同じ板厚の薄板部について、上述した試験を行うことができる。   That is, since the back surface of the thick plate portion and the back surface of the thin plate portion are arranged in the same plane on the back surface side of the plate member, the back surface of the plate member is formed flat. Therefore, the back surfaces of the pair of plate-like members can be overlapped with each other, and the thin plate portions are coupled to each other with the fastening member, so that the periphery of the fastening member can have the same plate thickness as the material to be fastened. Therefore, the above-described test can be performed on a thin plate portion of the same material to be fastened.

この場合でも、厚板部は薄板部を囲繞すると共に試験装置に固定される他端まで連設されるので、一対の板状部材は全体として剛性を確保することができる。従って、一対の板状部材は圧縮方向の荷重に耐えることができるので、薄板部が被締結素材と同じ薄板で構成される場合であっても、座屈防止用治具を用いることなく、一対の板状部材の締結部材で結合した部分（締結継手）についてせん断疲労試験を行うことができる。   Even in this case, since the thick plate portion surrounds the thin plate portion and is connected to the other end fixed to the test apparatus, the pair of plate-like members can ensure rigidity as a whole. Therefore, since the pair of plate-like members can withstand the load in the compression direction, even if the thin plate portion is formed of the same thin plate as the material to be fastened, the pair of plate-like members can be used without using a buckling prevention jig. A shear fatigue test can be performed on the portion (fastening joint) of the plate-like members joined by the fastening member.

結果として、厚板部により一対の板状部材の座屈を防止して、被締結素材と同じ板厚の薄板部について上述した試験を行うことができるので、試験対象である締結継手について正確な試験結果を得ることができる。   As a result, it is possible to prevent the buckling of the pair of plate-like members by the thick plate portion, and to perform the above-described test on the thin plate portion having the same plate thickness as the material to be fastened. Test results can be obtained.

請求項２記載のせん断疲労試験用試験片によれば、請求項１記載のせん断疲労試験用試験片の奏する効果に加え、薄板部と厚板部とを連結する連結部は、薄板部から厚板部にかけて板厚が漸増されているので、上述した試験を行い所定の荷重を負荷した場合に、薄板部と厚板部との連結部に応力が集中して亀裂が発生することを防止することができるという効果がある。   According to the test piece for shear fatigue test according to claim 2, in addition to the effect exerted by the test piece for shear fatigue test according to claim 1, the connecting portion for connecting the thin plate portion and the thick plate portion has a thickness from the thin plate portion. Since the plate thickness is gradually increased over the plate part, when the above-mentioned test is performed and a predetermined load is applied, stress is prevented from concentrating on the connecting part between the thin plate part and the thick plate part, thereby preventing a crack from occurring. There is an effect that can be.

これにより、一対の板状部材の締結部材で結合した部分（締結継手）から亀裂が発生する前に連結部から亀裂が発生することを防止することができるので、試験対象である締結継手について、正確な試験結果を得ることができるという効果がある。   Thereby, since it can prevent that a crack generate | occur | produces from a connection part before a crack generate | occur | produces from the part (fastening joint) couple | bonded by the fastening member of a pair of plate-shaped member, about the fastening joint which is a test object, There is an effect that an accurate test result can be obtained.

請求項３記載のせん断疲労試験用試験片によれば、請求項１又は２に記載のせん断疲労試験用試験片の奏する効果に加え、薄板部は、締結部材が締結される取付穴を中心とした正面視円形状に形成されているので、取付穴から連結部（薄板部の外縁）までの距離を一定とすることができ、薄板部を他の形状で形成する場合に比べて連結部（薄板部の外縁）の一部に応力が集中することを防止して、かかる部分から亀裂が生じることを防止することができるという効果がある。   According to the test piece for shear fatigue test according to claim 3, in addition to the effect exerted by the test piece for shear fatigue test according to claim 1 or 2, the thin plate portion is centered on the mounting hole to which the fastening member is fastened. The distance from the mounting hole to the connecting portion (the outer edge of the thin plate portion) can be made constant, and the connecting portion (as compared to the case where the thin plate portion is formed in another shape). There is an effect that it is possible to prevent stress from concentrating on a part of the outer edge) of the thin plate portion and to prevent a crack from being generated from the portion.

また、薄板部は正面視円形状に形成されているので、薄板部を切削加工する場合に、薄板部を簡易に削り出すことができる。よって、簡易に薄板部を形成することができるという効果がある。   Moreover, since the thin plate portion is formed in a circular shape when viewed from the front, the thin plate portion can be easily cut out when the thin plate portion is cut. Therefore, there is an effect that the thin plate portion can be easily formed.

以下、本発明の好ましい実施の形態について、添付図面を参照して説明する。図１は、本発明の一実施の形態におけるせん断疲労用試験片１を図示しており、図１（ａ）は、せん断疲労用試験片１の側面図であり、図１（ｂ）は、図１の矢印Ｉｂ方向から視たせん断疲労用試験片１の正面図である。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. FIG. 1 illustrates a shear fatigue test piece 1 according to an embodiment of the present invention. FIG. 1 (a) is a side view of the shear fatigue test piece 1, and FIG. FIG. 2 is a front view of a shear fatigue test piece 1 viewed from the direction of arrow Ib in FIG. 1.

図１に示すように、せん断疲労用試験片１は、被締結素材の締結部材であるリベット３で結合する部分（締結継手）が所定の強度基準を満たすかどうかを確認するために行うせん断疲労試験に用いられる試験片であって、正面視（図１（ｂ）紙面手側から視て）矩形状に構成される板材である一対の板状部材１０と、かかる一対の板状部材１０の重ね合わされた部位を結合するリベット３とを備えている。   As shown in FIG. 1, the shear fatigue test piece 1 is a shear fatigue test for confirming whether a portion (fastening joint) to be joined by a rivet 3 that is a fastening member of a material to be fastened satisfies a predetermined strength standard. A pair of plate-like members 10, which are test pieces used in the test, and are configured in a rectangular shape when viewed from the front (viewed from the front side of FIG. 1B), and the pair of plate-like members 10. And a rivet 3 for joining the overlapped portions.

一対の板状部材１０は、厚板部２０と、その厚板部２０よりも板厚が薄くされる薄板部３０と、薄板部３０と厚板部２０とを連結する連結部４０とを備えて構成されている。厚板部２０と、薄板部３０と、連結部４０とについては、図２を用いて後に詳述する。   The pair of plate-like members 10 includes a thick plate portion 20, a thin plate portion 30 that is thinner than the thick plate portion 20, and a connecting portion 40 that connects the thin plate portion 30 and the thick plate portion 20. Configured. The thick plate portion 20, the thin plate portion 30, and the connecting portion 40 will be described in detail later with reference to FIG.

図１に示すように、一対の板状部材１０は、各一端１０Ａ側の部分の裏面（図１右側の板状部材１０は図１（ａ）上側面、図１左側の板状部材１０は図１（ａ）下側面）同士が薄板部３０を含む全範囲で重ね合わされ、それら重ね合わされた薄板部３０がリベット３で結合されると共に、各他端１０Ｂ（厚板部２０）の裏面に合わせ板２が接合されている。   As shown in FIG. 1, a pair of plate-like members 10 are provided on the back side of each end 10 </ b> A side (the plate-like member 10 on the right side of FIG. 1 is the upper side of FIG. 1A, and the plate-like member 10 on the left side of FIG. 1 (a) lower side surfaces) are overlapped with each other over the entire range including the thin plate portion 30, and the overlapped thin plate portions 30 are joined by the rivets 3, and on the back surface of each other end 10B (thick plate portion 20). The laminated plate 2 is joined.

リベット３は、一対の板状部材１０の重ね合わされた部分（薄板部３０）を結合する軸状部材であって、頭部３ａと後述する取付穴３１（図２参照）に挿通される軸部３ｂとを備えて構成されている。頭部３ａは後述する一方（図１（ａ）上方）の薄板部３０の表面３０ｂ（図２参照）に係合されており、軸部３ｂの端部（図１（ａ）下側の端部）は、後述する他方（図１（ａ）下方）の薄板部３０の表面３０ｂ側（図１下側）から突設されると共に、その突設された部位にはナット４が締結されている。   The rivet 3 is a shaft-like member that couples the overlapped portions (thin plate portions 30) of the pair of plate-like members 10, and is a shaft portion that is inserted into the head 3a and a mounting hole 31 (see FIG. 2) described later. 3b. The head 3a is engaged with a surface 30b (see FIG. 2) of one of the thin plate portions 30 (upper side in FIG. 1A), which will be described later, and the end of the shaft portion 3b (lower end in FIG. 1A). Part) protrudes from the surface 30b side (lower side in FIG. 1) of the other thin plate part 30 (lower side in FIG. 1A), which will be described later, and the nut 4 is fastened to the protruding part. Yes.

このように構成されたせん断疲労用試験片１によれば、一対の板状部材１０の各他端１０Ｂを試験装置（図示せず）にそれぞれ固定し、その試験装置により引張方向である矢印ａ方向及び圧縮方向である矢印ｂ方向の荷重を繰り返し負荷することにより、上述したせん断疲労試験が行われる。   According to the shear fatigue test piece 1 configured in this way, the other ends 10B of the pair of plate-like members 10 are fixed to a test apparatus (not shown), respectively, and the arrow a indicating the tensile direction by the test apparatus. The shear fatigue test described above is performed by repeatedly applying a load in the direction of arrow b, which is the direction and the compression direction.

なお、合わせ板２の板厚寸法（図１（ａ）上下方向寸法）は、板状部材１０の厚板部２０と同じ寸法に設定されている。これにより、せん断疲労用試験片１（締結継手）に曲げモーメントが作用することを抑制して、せん断疲労試験をより正確に行うことができる。   In addition, the plate | board thickness dimension (FIG. 1 (a) vertical direction dimension) of the laminated board 2 is set to the same dimension as the thick board part 20 of the plate-shaped member 10. FIG. Thereby, it can suppress that a bending moment acts on the test piece 1 (fastening joint) for shear fatigue, and can perform a shear fatigue test more correctly.

図２（ａ）は、板状部材１０の側面図であり、図２（ｂ）は、図２（ａ）の矢印ＩＩｂ方向から視た板状部材１０の正面図であり、図２（ｃ）は、図２（ｂ）のＩＩｃ−ＩＩｃ線における板状部材１０の部分拡大断面図である。なお、図２（ｃ）において、板状部材１０は、その形状の理解を容易とするために、図２（ａ）及び図２（ｂ）より大きい縮尺で図示されている。   2A is a side view of the plate-like member 10, and FIG. 2B is a front view of the plate-like member 10 viewed from the direction of the arrow IIb in FIG. 2A. ) Is a partial enlarged cross-sectional view of the plate-like member 10 taken along the line IIc-IIc in FIG. In FIG. 2C, the plate-like member 10 is shown in a scale larger than those in FIGS. 2A and 2B in order to facilitate understanding of the shape.

図２に示すように、板状部材１０は、上述したように厚板部２０と、その厚板部２０よりも板厚が薄くされる薄板部３０と、薄板部３０と厚板部２０とを連結する連結部４０とを備えて構成されている。   As shown in FIG. 2, the plate member 10 includes a thick plate portion 20, a thin plate portion 30 whose thickness is made thinner than that of the thick plate portion 20, and the thin plate portion 30 and the thick plate portion 20. And a connecting portion 40 for connecting the two.

図２に示すように、厚板部２０は、矢印ｂで示す圧縮方向（図２（ｂ）右方向）に荷重が負荷された場合に、薄板部３０が座屈することを防止するための部分であって、その板厚Ｌ１が被締結素材（せん断疲労用試験片１によってせん断強度の評価を行う締結継手の一部であって実際の製品に用いられる薄板、以下についても同様である）より厚く設定されている。かかる板厚Ｌ１は、試験装置（図示せず）により負荷される所定荷重に対して座屈しない厚さに設定されており、本発明の一実施の形態においては４ｍｍに設定されている。   As shown in FIG. 2, the thick plate portion 20 is a portion for preventing the thin plate portion 30 from buckling when a load is applied in the compression direction indicated by the arrow b (the right direction in FIG. 2B). The plate thickness L1 is from the material to be fastened (a thin plate used as a part of a fastening joint for which the shear strength is evaluated by the shear fatigue test piece 1 and used in an actual product, and the same applies to the following). It is set thick. The plate thickness L1 is set to a thickness that does not buckle with respect to a predetermined load applied by a test apparatus (not shown), and is set to 4 mm in one embodiment of the present invention.

図２（ａ）及び図２（ｂ）に示すように、この厚板部２０は、板状部材１０の他端１０Ｂ側（図２（ａ）及び図２（ｂ）左側）に配設される本体部２１と、その本体部２１に連結されると共に板状部材１０の長手方向（図２（ｂ）左右方向）に延設され薄板部３０の両側（図２（ｂ）上側及び下側）に配設されるリブ部２２と、そのリブ部２２に連結されると共に板状部材１０の一端１０Ａ側（図２（ａ）及び図２（ｂ）右側）に配設されるガイド部２３とを備えて構成されている。この厚板部２０の寸法（即ち、本体部２１と、リブ部２２と、ガイド部２３の寸法）と後述する薄板部３０の寸法は、ＪＩＳ規格（スポット溶接継手の引張せん断試験の場合、ＪＩＳＺ３１３６、ＪＩＳＺ３１３８）をベースとした上で、圧縮荷重に対応できるように改良が加えられている。   As shown in FIGS. 2A and 2B, the thick plate portion 20 is disposed on the other end 10B side (left side of FIGS. 2A and 2B) of the plate-like member 10. A main body 21 connected to the main body 21 and extending in the longitudinal direction of the plate-like member 10 (left and right direction in FIG. 2 (b)), and on both sides (upper and lower sides in FIG. 2 (b)). ) And a guide portion 23 connected to the rib portion 22 and disposed on the one end 10 </ b> A side (the right side of FIGS. 2A and 2B) of the plate member 10. And is configured. The dimensions of the thick plate portion 20 (that is, the dimensions of the main body portion 21, the rib portion 22, and the guide portion 23) and the dimensions of the thin plate portion 30 described later are JIS standards (JISZ3136 in the case of a tensile shear test of a spot welded joint). JISZ3138) as a base, and improvements have been made to cope with compressive loads.

図２（ｂ）に示すように、本体部２１は、板状部材１０の他端１０Ｂ（図２（ｂ）左側端）から薄板部３０の手前まで、板状部材１０の一端１０Ａ側（図２（ｂ）右側）に延設される部分であって、上述した合わせ板１がその裏面２１ｂに接合されている。   As shown in FIG. 2 (b), the main body portion 21 extends from the other end 10B of the plate-like member 10 (the left end of FIG. 2 (b)) to the front side of the thin plate portion 30 at the one end 10A side (see FIG. 2 (b) is a portion extending to the right side), and the laminated plate 1 described above is bonded to the back surface 21b.

図２（ｂ）に示すように、リブ部２２は、本体部２１と後述するガイド部２３との間に配設される部分であって、薄板部３０の外縁に沿って矢印ａ，ｂで示す引張及び圧縮方向（図２（ｂ）左右方向）に延設されている。このリブ部により、矢印ｂで示す圧縮方向（図２（ｂ）右方向）に荷重が負荷された場合に、薄板部３０が座屈することを防止することができる。   As shown in FIG. 2B, the rib portion 22 is a portion disposed between the main body portion 21 and a guide portion 23 described later, and is indicated by arrows a and b along the outer edge of the thin plate portion 30. It extends in the tension and compression directions shown (the left-right direction in FIG. 2B). With this rib portion, it is possible to prevent the thin plate portion 30 from buckling when a load is applied in the compression direction indicated by the arrow b (the right direction in FIG. 2B).

また、図２（ａ）及び図２（ｃ）で示すようにリブ部２２の裏面２２ａは、薄板部３０の裏面３０ａと同一平面内に配設されると共に、本体部２１の裏面２１ａとも同一平面内に配設されている。   2A and 2C, the back surface 22a of the rib portion 22 is disposed in the same plane as the back surface 30a of the thin plate portion 30, and is the same as the back surface 21a of the main body portion 21. It is arranged in a plane.

図２（ｂ）に示すように、リブ部２２の幅（図２（ｂ）上下方向における寸法）は、板状部材１０の他端１０Ｂ側（図２（ｂ）左側）の端部で最大に設定され、板状部材１０の一端１０Ａ側（図２（ｂ）右側）に近接するに従って漸減し、板状部材１０の長手方向における薄板部３０の中央で最小に設定され、その後、板状部材１０の一端１０Ａ側（図２（ｂ）右側）に近接するに従って漸増し、板状部材１０の一端１０Ａ側（図２（ｂ）右側）の端部で最大に設定されている。   As shown in FIG. 2B, the width of the rib portion 22 (the dimension in the vertical direction in FIG. 2B) is maximum at the end of the plate member 10 on the other end 10B side (left side in FIG. 2B). And gradually decreases as it approaches the one end 10A side (the right side in FIG. 2B) of the plate-like member 10, and is set to the minimum at the center of the thin plate portion 30 in the longitudinal direction of the plate-like member 10, and then plate-like It gradually increases as it approaches the one end 10A side (right side of FIG. 2B) of the member 10, and is set to the maximum at the end of the one end 10A side (right side of FIG. 2B) of the plate-like member 10.

このリブ部２２の幅が狭すぎると後述する取付穴３１よりも先にリブ部２２から亀裂が発生する危険性がある。これを防止するために、リブ部２２の幅を一定値以上確保する必要がある。このリブ部２２の幅を確保するためには、板状部材１０の幅を広げるか薄板部３０の径を小さくする等の対策が必要となる。後者（薄板部３０の径を小さくすること）については、試験結果に影響を与えることから、好ましくない。前者（板状部材１０の幅を広くする）については、試験結果に影響を与えないが、試験装置（図示せず）への取付寸法上の制約がある。よって、板状部材１０を試験装置に取り付けることができることができる最大限幅に設定（幅55mm）することにより、必要なリブ部２２の幅を確保して取付穴３１よりも先にリブ部２２から亀裂が発生することを防止している。   If the width of the rib portion 22 is too narrow, there is a risk that a crack will occur from the rib portion 22 before the mounting hole 31 described later. In order to prevent this, it is necessary to secure the width of the rib portion 22 to a certain value or more. In order to secure the width of the rib portion 22, measures such as increasing the width of the plate-like member 10 or reducing the diameter of the thin plate portion 30 are required. The latter (reducing the diameter of the thin plate portion 30) is not preferable because it affects the test results. The former (in which the width of the plate-like member 10 is widened) does not affect the test results, but there are restrictions on the dimensions of mounting to a test apparatus (not shown). Therefore, by setting the plate member 10 to the maximum width that can be attached to the test apparatus (width 55 mm), a necessary width of the rib portion 22 is ensured and the rib portion 22 is ahead of the attachment hole 31. Prevents cracks from occurring.

結果として、このリブ部２２の最小幅（板状部材１０の長手方向における薄板部３０の中央の両側に配設される部分）は、後述する取付穴３１の直径より大きく設定されている。よって、矢印ｂで示す圧縮方向（図２（ｂ）右方向）に荷重が負荷された場合に、薄板部３０が座屈することを防止することができる。   As a result, the minimum width of the rib portion 22 (portions disposed on both sides of the center of the thin plate portion 30 in the longitudinal direction of the plate-like member 10) is set larger than the diameter of the mounting hole 31 described later. Therefore, it is possible to prevent the thin plate portion 30 from buckling when a load is applied in the compression direction indicated by the arrow b (the right direction in FIG. 2B).

図２（ａ）及び図２（ｂ）に示すように、ガイド部２３は、板状部材１０の一端１０Ａ（図２（ａ）及び図２（ｂ）右側端）から薄板部３０の手前まで、板状部材１０の一端１０Ａ側（図２（ａ）及び図２（ｂ）右側）に延設される部分であって、一対の板状部材１０の各一端１０Ａ側の裏面（図２（ａ）及び図２（ｂ）の板状部材１０の右側の下側面）同士が重ね合わされた場合に、薄板部３０と共に互いに重ね合わされている。   As shown in FIGS. 2A and 2B, the guide portion 23 extends from one end 10 </ b> A (the right end of FIGS. 2A and 2B) of the plate-like member 10 to the front of the thin plate portion 30. The plate member 10 is a portion extending to the one end 10A side (the right side of FIGS. 2A and 2B), and the back surface of each of the pair of plate members 10 on the one end 10A side (FIG. 2 ( When the a) and the lower surface of the right side of the plate-like member 10 in FIG. 2B are overlaid, they are overlaid together with the thin plate portion 30.

また、図２（ｃ）に示すように、ガイド部２３の裏面２３ａと薄板部３０の裏面３０ａとは同一平面内に配設されている。よって、ガイド部２３ａの裏面２３ａは、リブ部２２の裏面２３ａと同一平面内に配設されている。   As shown in FIG. 2C, the back surface 23a of the guide portion 23 and the back surface 30a of the thin plate portion 30 are disposed in the same plane. Therefore, the back surface 23 a of the guide portion 23 a is disposed in the same plane as the back surface 23 a of the rib portion 22.

このガイド部２３によって、一対の板状部材１０の各一端１０Ａ側の裏面（図１参照）同士が重ね合わされた場合に、板状部材１０がそれぞれ重ね合わされる方向（図２（ａ）及び図２（ｂ）下方）に座屈することを防止することができる。   When the back surfaces (see FIG. 1) of the one end 10A side of the pair of plate-like members 10 are overlapped by the guide portion 23, the direction in which the plate-like members 10 are overlapped (FIG. 2A and FIG. 2 (b) can be prevented from buckling.

結果として、厚板部２０により一対の板状部材１０の座屈を防止して、被締結素材と同じ板厚の薄板部３０について上述した試験を行うことができるので、試験対象である締結継手について正確な試験結果を得ることができる。   As a result, buckling of the pair of plate-like members 10 can be prevented by the thick plate portion 20, and the above-described test can be performed on the thin plate portion 30 having the same plate thickness as the material to be fastened. Accurate test results can be obtained.

この点について、図１に戻り、図２と共に図１も参照して詳しく説明する。図１及び図２に示すように、一対の板状部材１０の一方（図１（ａ）上側の板状部材１０）のガイド部２３の裏面２３ａは、一対の板状部材１０の他方（図１（ａ）下側の板状部材１０）の本体部２１の裏面２１ａに重ね合わされる。   This point will be described in detail with reference to FIG. 1 together with FIG. As shown in FIGS. 1 and 2, the back surface 23a of the guide portion 23 of one of the pair of plate members 10 (the plate member 10 on the upper side of FIG. 1A) is the other of the pair of plate members 10 (FIG. 1). 1 (a) is superimposed on the back surface 21a of the main body 21 of the lower plate-like member 10).

よって、例えば、一方の板状部材１０（図１（ａ）上側の板状部材１０）に、他方の板状部材１０（図１（ａ）下側の板状部材１０）に近接する方向（図１（ａ）下方向）への曲げモーメントが負荷された場合でも、一方の板状部材１０（図１（ａ）上側の板状部材１０）は、他方の板状部材１０（図１（ａ）下側の板状部材１０）のガイド部２３に板状部材１０の長手方向（図１（ａ）左右方向）にガイドされるので、一対の板状部材１０が座屈することを防止することができる。   Thus, for example, one plate-like member 10 (the upper plate-like member 10 in FIG. 1 (a)) and the other plate-like member 10 (the lower plate-like member 10 in FIG. 1 (a)) are in the direction ( Even when a bending moment in the downward direction (FIG. 1A) is applied, one plate-like member 10 (the upper plate-like member 10 in FIG. 1A) is in contact with the other plate-like member 10 (FIG. a) Since the guide member 23 of the lower plate-like member 10) is guided in the longitudinal direction of the plate-like member 10 (the left-right direction in FIG. 1A), the pair of plate-like members 10 are prevented from buckling. be able to.

また、図２（ｂ）で示すように、ガイド部２３は、板状部材１０の長手方向（図２（ｂ）左右方向）において寸法Ｌ４に設定されている。その寸法Ｌ４は、薄板部３０の半径Ｌ３より大きく設定されると共に薄板部３０の直径（Ｌ３×２）より小さく設定されている。   Further, as shown in FIG. 2B, the guide portion 23 is set to a dimension L4 in the longitudinal direction of the plate-like member 10 (the left-right direction in FIG. 2B). The dimension L4 is set larger than the radius L3 of the thin plate portion 30 and smaller than the diameter (L3 × 2) of the thin plate portion 30.

よって、板状部材１０の長手方向におけるガイド部２３の寸法Ｌ４を薄板部３０の半径Ｌ３より小さく設定した場合に比べて、ガイド部２３の裏面の面積が大きく設定されるので、対向するガイド部２３側（図２（ａ）及び図２（ｂ）下側）への座屈を確実に防止することができる。   Therefore, since the area of the back surface of the guide part 23 is set larger than when the dimension L4 of the guide part 23 in the longitudinal direction of the plate-like member 10 is set smaller than the radius L3 of the thin plate part 30, the opposing guide part Buckling to the 23 side (the lower side in FIGS. 2A and 2B) can be reliably prevented.

また、板状部材１０の長手方向におけるガイド部２３の寸法Ｌ４を薄板部３０の直径より大きく設定した場合に比べて、ガイド部２３の裏面の面積が小さく設定されるので、一対の板状部材１０の裏面同士の接触面積が過大となることを防止することができる。   Moreover, since the area of the back surface of the guide part 23 is set small compared with the case where the dimension L4 of the guide part 23 in the longitudinal direction of the plate-like member 10 is set larger than the diameter of the thin plate part 30, a pair of plate-like members It can prevent that the contact area of 10 back surfaces becomes excessive.

これにより、一対の板状部材１０のガイド部２３各裏面に摩擦による影響（摩擦熱による金属疲労等）が発生することを防止でき、せん断疲労用試験片１の精度低下を防止することができる。   Thereby, it can prevent that the influence (metal fatigue etc. by friction heat) generate | occur | produces on each back surface of the guide part 23 of a pair of plate-shaped member 10, and can prevent the precision fall of the test piece 1 for shear fatigue. .

図２（ｂ）に示すように、薄板部３０は、板状部材１０の一端１０Ａ側（図２（ａ）及び図２（ｂ）左側）に配設されて厚板部２０に囲繞される部分であって、図２（ｃ）に示すように板厚Ｌ２が被締結素材と同じ板厚に設定されている。なお、本発明の一実施の形態において、薄板部３０の板厚は２ｍｍに設定されている。   As shown in FIG. 2B, the thin plate portion 30 is disposed on the one end 10 </ b> A side (left side of FIGS. 2A and 2B) of the plate-like member 10 and is surrounded by the thick plate portion 20. As shown in FIG. 2C, the plate thickness L2 is set to the same plate thickness as the material to be fastened. In the embodiment of the present invention, the thickness of the thin plate portion 30 is set to 2 mm.

また、図２に示すように、薄板部３０には、リベット３（図１参照）の軸部３ｂが挿通される取付穴３１が穿設され、薄板部３０は、その取付穴３１を中心とした半径Ｌ３の正面視（図２（ｂ）紙面手前側から視て）円形状に形成されている。   As shown in FIG. 2, the thin plate portion 30 is provided with a mounting hole 31 through which the shaft portion 3 b of the rivet 3 (see FIG. 1) is inserted, and the thin plate portion 30 is centered on the mounting hole 31. A front view of the radius L3 (as viewed from the front side in FIG. 2B) is formed in a circular shape.

よって、取付穴３１から薄板部３０の外縁である連結部４０の内縁までの距離（半径Ｌ３）を一定とすることができ、薄板部３０を他の形状で形成する場合に比べて、連結部４０の一部に応力が集中することを防止して、かかる部分から亀裂が生じることを防止することができる。   Therefore, the distance (radius L3) from the attachment hole 31 to the inner edge of the connecting portion 40 that is the outer edge of the thin plate portion 30 can be made constant, and the connecting portion can be compared with the case where the thin plate portion 30 is formed in another shape. It is possible to prevent stress from concentrating on a part of 40 and prevent a crack from being generated from such part.

図２（ｃ）に示すように、薄板部３０は、板状部材１０を表面（図２（ｃ）上側面）側から切削加工することにより形成されている。よって、この薄板部３０の表面３０ｂは厚板部２０の表面２０ｂより一段低い位置に設定されている。   As shown in FIG. 2C, the thin plate portion 30 is formed by cutting the plate-like member 10 from the surface (upper side surface in FIG. 2C). Therefore, the surface 30b of the thin plate portion 30 is set at a position one step lower than the surface 20b of the thick plate portion 20.

図２（ｂ）に示すように、薄板部３０は正面視（図２（ｂ）紙面手前側から視て）円形状に形成されているので、薄板部３０を切削加工する場合に、薄板部３０を簡易に削り出すことができる。よって、簡易に薄板部３０を形成することができる。   As shown in FIG. 2B, since the thin plate portion 30 is formed in a circular shape when viewed from the front (viewed from the front side of FIG. 2B), the thin plate portion 30 is cut when the thin plate portion 30 is cut. 30 can be cut out easily. Therefore, the thin plate part 30 can be formed easily.

薄板部３０の半径Ｌ３は、被締結素材において隣設するリベット３間の距離である実際のリベットピッチの半分の値以上に設定、即ち、薄板部３０の直径（Ｌ３×２）が実際のリベットピッチ以上に設定され、実際のリベットピッチは、リベット３の軸部３ｂの略４倍に設定されている。このように、板状部材１０のリベットピッチを実際のリベットピッチより大きく設定することにより、板状部材１０の接触面間のリベット締結力が及ぼし合う範囲を完全にカバーすることができる。よって、正確な試験結果を得ることができる。   The radius L3 of the thin plate portion 30 is set to be equal to or more than half the actual rivet pitch, which is the distance between the adjacent rivets 3 in the material to be fastened, that is, the diameter (L3 × 2) of the thin plate portion 30 is the actual rivet. The actual rivet pitch is set to be about 4 times the shaft portion 3 b of the rivet 3. In this way, by setting the rivet pitch of the plate-like member 10 to be larger than the actual rivet pitch, it is possible to completely cover the range in which the rivet fastening force between the contact surfaces of the plate-like member 10 acts. Therefore, accurate test results can be obtained.

以上のように、一対の板状部材１０は、厚板部２０と、その厚板部２０よりも板厚が薄くされる薄板部３０とを備え、本体部２１、リブ部２２及びガイド部２３（厚板部２０）は、薄板部３０を囲繞すると共に試験装置（図示せず）に固定される他端１０Ｂまで連設されている。従って、薄板部３０をリベット３が締結される被締結素材と同じ板厚（薄板）に設定しても、一対の板状部材１０（薄板部３０）が座屈することを防止することができる。その結果、試験対象である締結継手について正確な試験結果を得ることができる。   As described above, the pair of plate members 10 includes the thick plate portion 20 and the thin plate portion 30 whose thickness is made thinner than that of the thick plate portion 20, and the main body portion 21, the rib portion 22, and the guide portion 23. The (thick plate portion 20) is connected to the other end 10B that surrounds the thin plate portion 30 and is fixed to a test apparatus (not shown). Therefore, even if the thin plate portion 30 is set to the same plate thickness (thin plate) as the material to be fastened to which the rivet 3 is fastened, the pair of plate members 10 (thin plate portions 30) can be prevented from buckling. As a result, accurate test results can be obtained for the fastening joint that is the test target.

即ち、図２（ｃ）に示すように、板状部材１０の裏面側（図２（ｃ）下側）において、厚板部２０の裏面２０ａと薄板部３０の裏面３０ａとが同一の平面内に配設されるので、板状部材１０の裏面が平坦状に形成される。よって、一対の板状部材１０の裏面同士を重ね合わせることができ、かかる薄板部３０同士をリベット３（図１参照）で結合するので、リベット３の周囲（後述する取付穴３１の周囲）を被締結素材と同じ板厚とすることができる。従って、被締結素材の同じ板厚の薄板部３０について、上述した試験を行うことができる。   That is, as shown in FIG. 2 (c), the back surface 20a of the thick plate portion 20 and the back surface 30a of the thin plate portion 30 are in the same plane on the back surface side (the lower side in FIG. 2 (c)) of the plate member 10. Therefore, the back surface of the plate member 10 is formed flat. Accordingly, the back surfaces of the pair of plate-like members 10 can be overlapped, and the thin plate portions 30 are coupled to each other by the rivet 3 (see FIG. 1), so that the periphery of the rivet 3 (around the mounting hole 31 to be described later). The plate thickness can be the same as the material to be fastened. Therefore, the above-described test can be performed on the thin plate portion 30 having the same thickness as the material to be fastened.

この場合でも、厚板部２０は薄板部３０を囲繞すると共に試験装置（図示せず）に固定される他端１０Ｂまで連設されるので、一対の板状部材１０は全体として剛性を確保することができる。従って、リベット３（図１参照）で薄板部３０が結合された一対の板状部材１０は、矢印ｂで示す圧縮方向（図２（ｂ）右方向）の荷重に耐えることができるので、薄板部３０が被締結素材と同じ薄板で構成される場合であっても、座屈防止用治具を用いることなく、一対の板状部材１０のリベット３で結合した部分（締結継手）についてせん断疲労試験を行うことができる。   Even in this case, since the thick plate portion 20 surrounds the thin plate portion 30 and is connected to the other end 10B fixed to the test apparatus (not shown), the pair of plate-like members 10 ensure the rigidity as a whole. be able to. Accordingly, the pair of plate-like members 10 to which the thin plate portion 30 is coupled with the rivet 3 (see FIG. 1) can withstand the load in the compression direction (right direction in FIG. 2B) indicated by the arrow b. Even when the portion 30 is composed of the same thin plate as the material to be fastened, the shear fatigue of the portions (fastening joints) connected by the rivets 3 of the pair of plate-like members 10 without using a buckling prevention jig A test can be performed.

図２（ｃ）に示すように、連結部４０は、上述したように薄板部３０と厚板部２０とを連結する部分であって、連結部４０の表面（図２（ｃ）上側面）は、板状部材１０の裏面側（図２（ｃ）下側）に向かって凹む曲面形状に形成されると共に、連結部４０の裏面（図２（ｃ）下側面）は、薄板部３０の裏面３０ｂ及びガイド部２３の裏面２３と同一平面上に形成されている。即ち、薄板部３０から厚板部２０にかけて板厚が漸増されている。   As shown in FIG. 2C, the connecting portion 40 is a portion that connects the thin plate portion 30 and the thick plate portion 20 as described above, and is a surface of the connecting portion 40 (upper side surface in FIG. 2C). Is formed in a curved shape that is recessed toward the back surface side (the lower side in FIG. 2C) of the plate-like member 10, and the back surface (the lower side surface in FIG. 2C) of the connecting portion 40 is formed on the thin plate portion 30. The back surface 30b and the back surface 23 of the guide part 23 are formed on the same plane. That is, the plate thickness is gradually increased from the thin plate portion 30 to the thick plate portion 20.

よって、上述した試験を行い所定の荷重を負荷した場合に、薄板部３０と厚板部２０とを連結する部分である連結部４０に応力が集中して亀裂が発生することを防止することができる。   Therefore, when the above-described test is performed and a predetermined load is applied, it is possible to prevent stress from concentrating on the connecting portion 40 that is a portion connecting the thin plate portion 30 and the thick plate portion 20 to generate a crack. it can.

これにより、一対の薄板部３０のリベット３（図１参照）で結合した部分（締結継手）から亀裂が発生する前に連結部４０から亀裂が発生することを防止することができるので、試験対象である締結継手について、正確な試験結果を得ることができる。   Thereby, since it can prevent that a crack generate | occur | produces from the connection part 40 before a crack generate | occur | produces from the part (fastening joint) couple | bonded by the rivet 3 (refer FIG. 1) of a pair of thin-plate part 30, test object An accurate test result can be obtained for the fastening joint.

以上、実施例に基づき本発明を説明したが、本発明は上述した実施例に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変更が可能であることは容易に推察できるものである。   The present invention has been described above based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and changes can be easily made without departing from the spirit of the present invention. Can be inferred.

例えば、上記実施の形態では、薄板部３０は正面視円形状に構成されていたが、必ずしもこれに限られず、他の形状、例えば、板状部材１０の長手方向に短径の長円形状で構成されてもよい。この場合、板状部材１０の長手方向（図２（ｂ）左右方向）におけるリブ部２２の寸法が長尺となることを抑制することができるので、板状部材１０の座屈を確実に防止することができる。但し、連結部４０に応力が集中することを防止するために、連結部４０は薄板部３０から厚板部２０にかけての板厚は漸増されていることが望ましい。   For example, in the above-described embodiment, the thin plate portion 30 is configured to have a circular shape when viewed from the front. However, the shape is not necessarily limited thereto. For example, the thin plate portion 30 has an elliptical shape with a short diameter in the longitudinal direction of the plate member 10. It may be configured. In this case, since the dimension of the rib portion 22 in the longitudinal direction of the plate-like member 10 (the left-right direction in FIG. 2B) can be suppressed, the buckling of the plate-like member 10 is reliably prevented. can do. However, in order to prevent stress from concentrating on the connecting portion 40, it is desirable that the connecting portion 40 has a gradually increasing thickness from the thin plate portion 30 to the thick plate portion 20.

また、上記実施の形態では、本体部２１、リブ部２２及びガイド部２３の板厚は同一にされていたが、必ずしもこれに限られず、リブ部２２の板厚を本体部２１及びガイド部２３の板厚より厚く構成してもよい。この場合、リブ部２２の剛性を向上させることができるので、薄板部３０の座屈を確実に防止することができる。   Moreover, in the said embodiment, although the plate | board thickness of the main-body part 21, the rib part 22, and the guide part 23 was made the same, it is not necessarily restricted to this, The board | plate thickness of the rib part 22 is set to the main-body part 21 and the guide part 23. It may be configured to be thicker than the plate thickness. In this case, since the rigidity of the rib portion 22 can be improved, the buckling of the thin plate portion 30 can be reliably prevented.

さらに、上記実施の形態では、締結部材としてリベット３について説明したが、必ずしもこれに限られず、一対の板状部材１０の薄板部３０同士を連結するものであればよい。例えば、ファスナ、ボルト等であってもよい。   Furthermore, in the said embodiment, although the rivet 3 was demonstrated as a fastening member, it is not necessarily restricted to this, What is necessary is just to connect the thin plate parts 30 of a pair of plate-shaped member 10. For example, a fastener or a bolt may be used.

（ａ）は、本発明の一実施の形態におけるせん断疲労用試験片の側面図であり、（ｂ）は、図１（ａ）の矢印Ｉａ方向から視たせん断疲労用試験片の正面図である。(A) is a side view of the test piece for shear fatigue in one embodiment of the present invention, and (b) is a front view of the test piece for shear fatigue as viewed from the direction of arrow Ia in FIG. is there. （ａ）は、板状部材の側面図であり、（ｂ）は、図２（ａ）の矢印ＩＩｂ方向から視た板状部材の正面図であり、（ｃ）は、図２（ｂ）のＩＩｃ−ＩＩｃ線における板状部材の部分拡大断面図である。(A) is a side view of a plate-like member, (b) is a front view of the plate-like member as viewed from the direction of arrow IIb in FIG. 2 (a), and (c) is FIG. 2 (b). It is a partial expanded sectional view of the plate-shaped member in the IIc-IIc line | wire. （ａ）は、従来の試験片の側面図であり、（ｂ）は、図３（ａ）のＩＩＩｂ−ＩＩＩｂ線における試験片の断面図である。(A) is a side view of the conventional test piece, (b) is sectional drawing of the test piece in the IIIb-IIIb line | wire of Fig.3 (a).

符号の説明Explanation of symbols

１ せん断疲労用試験片
３ リベット（締結部材）
３ａ 頭部（締結部材の一部）
３ｂ 軸部（締結部材の一部）
４ ナット（締結部材の一部）
１０ 板状部材
１０Ａ 一端（一対の板状部材の重ね合わされる部位）
１０Ｂ 他端（一対の板状部材の各他端）
２０ 厚板部
２１ 本体部（厚板部の一部）
２１ａ 裏面（厚板部の裏面）
２２ リブ部（厚板部の一部）
２２ａ 裏面（厚板部の裏面）
２３ ガイド部（厚板部の一部）
２３ａ 裏面（厚板部の裏面）
３０ 薄板部
３０ａ 裏面（薄板部の裏面）
３１ 取付穴
４０ 連結部
Ｌ１ 厚板部の板厚
Ｌ２ 薄板部の板厚
矢印ａ 引張方向
矢印ｂ 圧縮方向 1 Test piece for shear fatigue 3 Rivet (fastening member)
3a Head (part of fastening member)
3b Shaft (part of fastening member)
4 Nut (part of fastening member)
10 Plate-like member 10A One end (site where a pair of plate-like members are overlapped)
10B other end (each other end of a pair of plate-like members)
20 Thick Plate 21 Main Body (Part of Thick Plate)
21a Back side (back side of thick plate part)
22 Rib part (part of thick plate part)
22a Back side (back side of thick plate)
23 Guide part (part of thick plate part)
23a Back side (back side of thick plate part)
30 Thin plate portion 30a Back surface (back surface of thin plate portion)
31 Mounting hole 40 Connecting portion L1 Thick plate portion thickness L2 Thin plate portion thickness arrow a Pull direction arrow b Compression direction

Claims (3)

正面視矩形状に構成され一端同士が重ね合わされる一対の板状部材と、それら一対の板状部材の重ね合わされた部位を結合する締結部材とを備え、前記一対の板状部材の各他端が試験装置に固定され、その試験装置によって引張方向及び圧縮方向への荷重が繰り返し負荷されるせん断疲労用試験片において、
前記一対の板状部材は、厚板部と、その厚板部よりも板厚が薄くされる薄板部とをそれぞれ備えると共に、前記板状部材の裏面側において、前記厚板部の裏面と薄板部の裏面とが同一の平面内に配設され、
前記厚板部は、前記薄板部を囲繞すると共に前記試験装置に固定される他端まで連設され、
前記一対の板状部材の裏面同士を重ね合わせ、前記薄板部同士を前記締結部材で結合することを特徴とするせん断疲労用試験片。 A pair of plate-like members configured in a rectangular shape in front view and having one end overlapped with each other, and a fastening member that joins the overlapped portions of the pair of plate-like members, each other end of the pair of plate-like members Is fixed to a test apparatus, and a test piece for shear fatigue in which a load in a tensile direction and a compression direction is repeatedly applied by the test apparatus,
The pair of plate-like members each include a thick plate portion and a thin plate portion whose thickness is thinner than that of the thick plate portion, and on the back side of the plate-like member, the back surface of the thick plate portion and the thin plate The rear surface of the part is disposed in the same plane,
The thick plate portion is connected to the other end that surrounds the thin plate portion and is fixed to the test apparatus,
A test piece for shear fatigue, wherein the back surfaces of the pair of plate-like members are overlapped with each other, and the thin plate portions are joined by the fastening member. 前記一対の板状部材は、前記薄板部と前記厚板部とを連結する連結部を備え、
その連結部は、前記薄板部から前記厚板部にかけて板厚が漸増されていることを特徴とする請求項１記載のせん断疲労用試験片。 The pair of plate-like members includes a connecting portion that connects the thin plate portion and the thick plate portion,
The shear fatigue test piece according to claim 1, wherein the connecting portion has a plate thickness gradually increased from the thin plate portion to the thick plate portion. 前記薄板部は、前記締結部材が締結される取付穴が穿設され、その取付穴を中心とした正面視円形状に形成されていることを特徴とする請求項１又は２に記載のせん断疲労用試験片。   3. The shear fatigue according to claim 1, wherein the thin plate portion is provided with a mounting hole in which the fastening member is fastened, and is formed in a circular shape when viewed from the front centering on the mounting hole. Test piece.
JP2008179807A 2008-07-10 2008-07-10 Specimen for shear fatigue test Expired - Fee Related JP5094603B2 (en)

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CN109813587A (en) * 2019-03-08 2019-05-28 南昌航空大学 A kind of testpieces for the research of rivet bias jointing pin load distribution
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CN103674733B (en) * 2012-09-14 2016-03-23 郑州中原应用技术研究开发有限公司 A kind of bidirectional stress creep testing machine of mechanical connection
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DE102014225094B4 (en) * 2014-12-08 2016-08-25 Thyssenkrupp Steel Europe Ag tensile specimen
KR20180047342A (en) * 2016-10-31 2018-05-10 대우조선해양 주식회사 Fixing jig apparatus for coupling force measurement of specimens coupled perpendicularly
KR102552641B1 (en) 2016-10-31 2023-07-07 한화오션 주식회사 Fixing jig apparatus for coupling force measurement of specimens coupled perpendicularly
CN109813587A (en) * 2019-03-08 2019-05-28 南昌航空大学 A kind of testpieces for the research of rivet bias jointing pin load distribution
CN109813587B (en) * 2019-03-08 2021-04-02 南昌航空大学 A test piece that is used for eccentric connection of rivet to connect nail to carry distribution research
CN110296891A (en) * 2019-08-07 2019-10-01 广州奥图弹簧有限公司 Riveting pull-out force test device for automobile connecting piece
CN110296891B (en) * 2019-08-07 2022-02-18 广州奥图弹簧有限公司 Riveting pull-out force test device for automobile connecting piece

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