KR101721409B1

KR101721409B1 - Textile sensor test jig

Info

Publication number: KR101721409B1
Application number: KR1020150100215A
Authority: KR
Inventors: 김한성; 이주현; 조영근; 송예은; 강복구; 이해동
Original assignee: 연세대학교 원주산학협력단; 연세대학교 산학협력단
Priority date: 2015-07-15
Filing date: 2015-07-15
Publication date: 2017-03-31
Also published as: KR20170010133A

Abstract

The present invention relates to a test jig for a fiber sensor used for holding a fiber sensor or a conductive fiber at both ends and for testing a tensile force or the like, wherein the test jigs at both ends are symmetrical in point symmetry, and a semi-cylindrical mount , The fiber sensor is wound 180 degrees on one side of the test jig so that it goes to the opposite test jig so that the shape of the fiber sensor between the test jigs on both ends is not distorted so that the resistance value of the fiber sensor does not change and a uniform stress distribution To a test jig of a fiber sensor.
A test jig for a fiber sensor according to the present invention is a test jig having a through hole provided on one side of an upper surface thereof and having one end of a fiber sensor to be measured inserted therein and fixed by a fiber sensor fixing piece and a fixing piece adjusting screw, study; A semi-cylindrical receptacle provided on a side of the fiber sensor insertion hole on the upper surface thereof, the semi-cylindrical receptacle being wound with a fiber sensor whose one end is fixed to the fiber sensor insertion tube; And a flat holding part having a flat side surface on one side of the semi-cylindrical holding stand and guiding the fiber sensor passing through the semi-cylindrical holding stand to keep the flattened state of the flat holding stand. do.

Description

Textile sensor test jig}

The present invention relates to a test jig for a fiber sensor used for holding a fiber sensor or a conductive fiber at both ends and for testing a tensile force or the like, wherein the test jigs at both ends are symmetrical in point symmetry, and a semi-cylindrical mount , The fiber sensor is wound 180 degrees on one side of the test jig so that it goes to the opposite test jig so that the shape of the fiber sensor between the test jigs on both ends is not distorted so that the resistance value of the fiber sensor does not change and a uniform stress distribution To a test jig of a fiber sensor.

The tensile strength of a fiber is one of the most important mechanical properties of the fiber. The tester for determining the relationship between tensile stress and force and deformation is called a fiber tensile tester.

In recent years, as a fiber tensile tester, there has been developed an electric resistance line strain gauge. Typical examples thereof include an Instron universal tensile tester (manufactured by Instron Engineering Corp., USA).

However, since the resistance value of the fiber sensor or the conductive fiber is changed when the external shape of the fiber sensor or the conductive fiber is deformed during the tensile test, it is very difficult to test the tension of the fiber sensor or the conductive fiber.

Thus, a jig for a fiber sensor or a conductive fiber is desired that does not cause external deformations upon tension. That is, in a jig applied to a fiber tensile tester (universal tensile tester), the shape of a fiber sensor between two jigs is not distorted, so that the resistance value of the fiber sensor does not change and a uniform stress distribution can be exhibited A test jig is desired.

However, no jig for such a fiber sensor or conductive fiber is found.

As a prior art, there is JP-A-11-183340 entitled "tensile test piece of FRP (fiber reinforced plastic) ". The present invention relates to a tensile test piece of an FRP (fiber reinforced plastic) in which resin is solidified after both ends of a roving (fiber bundle) 1 impregnated with a resin are wound around a cylindrical member 2, No drop or jack slippage occurs and accurate tensile properties can be obtained in one test. As shown in Fig. 1, a cylindrical member 2 is provided on the inside of the jig 4, and the end portion of the roving 1 is wound on the cylindrical member 3 three times, and wound in the form of a kind of knot.

Japanese Unexamined Patent Application Publication No. 11-183340 is an apparatus for testing fibers having a wide width. If the jig of FIG. 1 is applied to a fiber sensor or conductive fiber having a predetermined width, (A) of FIG. 2, and when a force is applied during tensile, it becomes as shown in FIG. 2 (b).

In FIG. 2 (a), when the measurement interval is equal to the length of L1, the aspect ratio is constant in the measurement interval. However, in FIG. 2 (b), when the measurement period is equal to the length of L2, the aspect ratio is not constant. In FIG. 2 (b), each portion of the fiber (fiber sensor or conductive fiber) to be measured has different slenderness ratios, so that it can not have a constant resistance in the measurement period. Therefore, when the jig shown in FIG. 1 is applied to a fiber sensor or a conductive fiber, the cross section becomes unstable in the measuring section during tension, and the resistance value is changed, so accurate measurement can not be performed.

The present invention proposes a test jig for a fiber sensor which can secure a certain width and cross section in a measuring interval (test interval) of a fabric during tension by providing a sufficient fabric deformation interval even for a wide fabric.

SUMMARY OF THE INVENTION The object of the present invention is to solve the problems of the prior art in that a test jig at both ends has a point symmetry and a semi-cylindrical mounting portion is provided at one side of a semiconductor jig, and after a fiber sensor is wound 180 degrees on one test jig, So that the shape of the fiber sensor between the test jigs at both ends is not distorted so that the resistance value of the fiber sensor does not change and a uniform stress distribution can be exhibited.

Another problem to be solved by the present invention is to provide a flat cloth holder at both ends of a measuring section so as to flatten the fabric of the measuring section so that the measuring interval of the fabric The present invention provides a test jig for a fiber sensor that can secure a certain width and cross section in a test section.

In order to solve the above problem, the test jig of the fiber sensor of the present invention has a through hole provided on one side of the upper surface, one end of the fiber sensor to be measured is inserted into the inside of the test jig, and the fiber sensor fixing piece and the fixing piece adjusting screw Fixed, fiber sensor insertion bore; A semi-cylindrical receptacle provided on a side of the fiber sensor insertion hole on the upper surface thereof, the semi-cylindrical receptacle being wound with a fiber sensor whose one end is fixed to the fiber sensor insertion tube; And a flat holding part having a flat side surface on one side of the semi-cylindrical holding stand and guiding the fiber sensor passing through the semi-cylindrical holding stand to keep the flattened state of the flat holding stand. do.

In addition, the test jig of the fiber sensor of the present invention comprises: a gripper having a semi-cylindrical holder for wrapping a fiber sensor fixed at one end by 180 degrees; And an L-shaped leg portion provided at both ends of the upper horizontal axis, wherein the grip portion is inserted and fixed between the L-shaped leg portions provided at both ends.

The test fixture is provided with an upper vertical axis for coupling with the testing machine at the upper center of the upper horizontal axis.

The grip portion is provided with a through-hole for fixation, which is a through-hole penetrated from the front surface to the fiber sensor insertion hole, at a central portion of the front surface thereof. The fiber sensor inserted between the side wall of the through- , And a fixing screw is inserted and adjusted in the through hole for fixation.

A fixture holder for preventing the fiber sensor fixing member from falling down through the fiber sensor insertion hole is provided on the bottom surface of the fiber sensor insertion hole on the bottom surface of the gripper.

The fixing piece rest is provided on the bottom surface of the grip portion so as to cover a part of the insertion hole from one side of the fiber sensor insertion hole on the bottom surface of the grip portion.

The L-shaped leg portion is composed of a leg vertical axis and a leg horizontal axis. One end of the leg vertical axis is provided at both ends of the upper horizontal axis, and a leg horizontal axis is provided at the other end of the leg vertical axis.

Each of the left and right sides of the grip portion has a side surface through hole on the grip portion. On the horizontal axis of each of the right and left legs, there is a test side surface side through hole. The side hole of the grip portion and the side surface hole of the test device side are fixed by side fixing screws, Lt; / RTI >

The fiber sensor may be a conductive fiber.

In the present invention, the first test jig and the second test jig are test jigs for the same fiber sensor, one end of the fiber sensor is held on the first test jig, and the other end of the fiber sensor is held on the second test jig A fiber sensor insertion bore in which one end of a fiber sensor is inserted and fixed by a fiber sensor fixing piece and a fixing piece adjusting screw in a through hole provided on one side of an upper surface of a testing jig of a fiber sensor for performing a tensile test; A semi-cylindrical holder which is provided on the upper side of the fiber sensor insertion hole and has a semi-cylindrical shape and in which the fiber sensor is wound 180 degrees; And a flat holding part which is formed on one lateral side of the semi-cylindrical holding stand and which is flat and guides the fiber sensor to maintain the flattened state of the fiber sensor.

In the first test jig, the fiber sensor inserted and fixed in the fiber sensor insertion hole is transferred to the second test jig through the semi-cylindrical mount and the plane mount in this order.

In the second test jig, a fiber sensor, which is in the order of a flat holder and a semi-cylindrical holder, is inserted and fixed in the fiber sensor insertion hole through a semi-cylindrical holder.

According to the test jig of the fiber sensor of the present invention, the test jigs at both ends are symmetrical in point symmetry, and the semi-cylindrical mount portion is provided at one side of the joint jig. After the fiber sensor is wound 180 degrees on one test jig, So that the shape of the fiber sensor between the test jigs at both ends is not distorted so that the resistance value of the fiber sensor does not change and a uniform stress distribution can be exhibited.

The present invention relates to a test jig for a fiber sensor used for testing a tensile test or the like by holding a fiber sensor or a conductive fiber at both ends thereof. The test jig has a sufficient fabric deformation section even for a wide fabric, So that a certain width and cross section can be ensured in the measuring section (test section) of the fabric during tensioning. Therefore, by using the test jig of the present invention, more accurate results can be obtained in the tensile test of the fiber sensor or the conductive fiber.

1 is a view showing an embodiment of an FRP tensile test piece of Japanese Laid-open Patent Publication No. 11-183340.
Fig. 2 is an explanatory view for explaining the case where the jig of Fig. 1 is applied to a fiber sensor or a conductive fiber.
3 is a perspective view of a test jig of a fiber sensor according to the present invention.
4 is a bottom view of a test jig of the fiber sensor of Fig. 3;
5 is a rear view of the test jig of the fiber sensor of Fig.
Fig. 6 is a side view of the test jig of the fiber sensor of Fig. 3;
7 is an example in which a fiber sensor is mounted on a test jig of the fiber sensor of Fig.
8 is a perspective view of the grip portion of Fig.
Fig. 9 is a perspective view (front perspective view) of the grip portion excluding the fiber sensor fixing piece in the grip portion of Fig. 8; Fig.
10 is a bottom perspective view of the grip portion of Fig.
11 is a fiber sensor fixing piece of Fig.
12 is a tester fixing unit of Fig.
13 is an exploded perspective view of the test jig of the fiber sensor of Fig.
14 is a view showing a test jig of the fiber sensor of Fig. 3 mounted on both ends of the fiber sensor.
Fig. 15 is a side view showing a test jig of a fiber sensor mounted on both ends of the fiber sensor of Fig. 14. Fig.
16 is an explanatory view for explaining the direction of the force along the test jig of the fiber sensor in the tensile test.
17 is an example of the fiber sensor test jig 10 of the present invention.

Hereinafter, a test jig for a fiber sensor according to the present invention will be described in detail with reference to the accompanying drawings.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test jig used for testing a tensile lamp or the like by holding a fiber sensor or a conductive fiber at both ends thereof. In the present invention, a fiber sensor and a conductive fiber are collectively referred to as a fiber sensor.

It is important to test the tensile of the fiber sensor without changing the function of the fiber sensor due to the change of the resistance value of the fiber sensor in the test jig of the fiber sensor.

FIG. 3 is a perspective view of a test jig of the fiber sensor according to the present invention, FIG. 4 is a bottom view of the test jig of the fiber sensor of FIG. 3, FIG. 5 is a rear view of the test jig of the fiber sensor of FIG. 6 is a side view of the test jig of the fiber sensor of Fig. 3, and Fig. 7 is an example of attaching the fiber sensor to the test jig of the fiber sensor of Fig.

The test jig (10) of the fiber sensor of the present invention comprises a grip portion (100) and a tester fixing portion (200).

The grip unit 100 is a means for gripping the fiber sensor 300 and grips the fiber sensor 300 and is coupled to the tester fixing unit 200. The gripper 100 is used in pairs to test the tension of the fiber sensor 300.

The grip portion 100 includes a fiber sensor insertion hole 110 for gripping the fiber sensor and the fiber sensor 300 inserted into the fiber sensor insertion hole 110 is connected to the fiber sensor fixing piece 170 and the fixing piece 170. [ And is fixed by an adjusting screw 123. The fiber sensor 300 fixed by the fiber sensor fixing member 170 is passed through the semi-cylindrical holder 150 and then the flat holder 160 spanned by the semi-cylindrical holder 150 is wound around the fiber sensor 300, . The fiber sensor 300 having passed through the flat holder 160 is transferred to the flat holder 160 of the gripper 100 on the other side.

The test fixture unit 200 is coupled to the grip unit 100 to form a test jig 10. The test fixture unit 200 coupled to the grip unit 100 is mounted on a testing machine such as an universal testing machine .

The test fixture 200 has L-shaped legs 215 provided at both ends of the upper horizontal axis 210 and has an upper vertical axis 240 at its upper end. The L-shaped leg portion 215 is engaged with the side surface of the grip portion 100, and the upper vertical axis 240 is coupled with a tester (e.g., universal testing machine). The L-shaped leg portion 215 includes a leg vertical axis 220 and a leg horizontal axis 230. That is, the grip portion 100 is inserted between the L-shaped leg portions 215.

Fig. 8 is a perspective view of the grip portion of Fig. 3, Fig. 9 is a perspective view (front perspective view) of the grip portion excluding the fiber sensor fixing piece in the grip portion of Fig. 8, Fig. 10 is a bottom perspective view of the grip portion of Fig. Fig. 11 is a fiber sensor fixing piece of Fig. 8, Fig. 12 is a fixing part of the testing device of Fig. 3, and Fig. 13 is an exploded perspective view of a testing jig of the fiber sensor of Fig.

As shown in FIG. 9, a semicylindrical cradle 150 is provided on one side of the upper surface of the grip unit 100, and a fiber sensor insertion hole 110 is provided on one side of the semi- cylindrical cradle 150.

The semi-cylindrical holder 150 protrudes in a semicylindrical shape convexly from the upper surface of the gripper 100 and is a portion for giving a sufficient fabric deformation interval of the fiber sensor 300 to which one side is fixed. In addition, the semi-cylindrical mount 150 serves to uniformize the force applied to the fiber sensor 300 even if the width of the fiber sensor 300 is wide.

The planar cradle 160 is provided at one side of the semi-cylindrical cradle 150 and the planar cradle 160 is provided at the other side of the semi-cylindrical cradle 150 .

7 and 8, the fiber sensor insertion hole 110 is a through hole into which the fiber sensor 300 and the fiber sensor fixing piece 170 are inserted, The fiber sensor 300 is inserted into the grip portion 100 and the fiber sensor 300 is fixed to the grip portion 100 by adjusting the fixing piece adjusting screw 123.

The fiber sensor fixing piece 170 is provided as means for flatly fixing the fiber sensor 300 to the grip portion 100, that is, by means of the fiber sensor fixing piece 170 and the fixing piece adjusting screw 123, 300). In other words, the fiber sensor fixing piece 170 fixes the entire one end of the fiber sensor 300 having a predetermined width (width) so as to uniformly transmit the force when tension is applied.

The fiber sensor fixing piece 170 is positioned within the fiber sensor insertion hole 110 by a fixing piece adjusting screw 123. 8, the width of the fiber sensor fixing piece 170 is equal to or smaller than the width of the fiber sensor insertion hole 110, and the length thereof is the same as the length of the fiber sensor insertion hole 110. The fiber sensor fixing piece 170 may have the same shape as the fiber sensor insertion hole 110 (i.e., in the form of a rectangular tube).

A fixing device rest 180 for preventing the fiber sensor fixing member 170 from falling down through the fiber sensor insertion hole 110 is provided on the bottom surface of the fiber sensor insertion hole 110 on the bottom surface of the holding member 100 .

10, the fixture holder 180 can pass the fiber sensor 300 from the top to the bottom through the fiber sensor insertion hole 110, while at the same time, the fiber sensor fixing piece 170 is inserted into the fiber sensor insertion hole 110, Through the through hole 110 so as not to fall downward. The fixed holding platform 180 is provided on the bottom surface of the holding portion 100 so as to cover a part of the insertion hole 110 from one side of the fiber sensor insertion hole 110 on the bottom surface of the holding portion 100. Therefore, in the fiber sensor insertion hole 110 on the bottom surface of the grip portion 100, the transverse length of the portion excluding the portion covered by the fixed piece rest 180 is smaller than the thickness of the fiber sensor fixing piece 170. The fixture rest 180 may be provided on the bottom of the grip 100 or may be separate from the body of the grip 100 and may be mounted on the bottom of the body of the grip 100 by means of a screw or the like.

11 (a), the fiber sensor fixing piece 170 is made of a plate in the shape of a rectangular tube, and there may be no groove, that is, a fixing groove, on the inner side. 11 (b), the fiber sensor fixing piece 170 may be provided with a fixing piece groove at the center of the fiber sensor fixing piece 170, The fixing screw 123 inserted into the fiber sensor inserting hole 110 can be inserted through the fixing screw 113. 11 (c), the fiber sensor fixing piece 170 is provided with a fixing piece groove at the center, and the fixing piece groove may have a thread.

The flat holder 160 is configured such that the fiber sensor 300 uniformly transmitting the force via the semi-cylindrical holder 150 is maintained in a flatly expanded state so that the force (force at the time of tension) And as a result, serves as a guide for transmitting a uniform stress distribution toward the test jig 10 of the other fiber sensor.

10, the flat holder 160 is provided on one side surface of the grip portion 100 and on the back surface of the grip portion 100, that is, in the grip portion 100, the through- The opposite side of the face. That is, the flat holder 160 is one side of the holder 100 connected to the semi-cylindrical holder 150.

As shown in FIGS. 8 and 9, a fastening hole 113 for fixing a thread is formed on the front surface of the fastener 100, and a screw thread is provided on the inner side of the fastener threading first hole 113. The fixed piece adjusting screw 123 is inserted into the through hole 113 for the fixed bobbin threading hole and the fixed piece adjusting screw 123 inserted in the fixed bore hole 113 is engaged with the fixed piece groove 171.

Each of the right and left side surfaces of the grip portion 100 has two gripper side surface apertures, that is, a first grip portion side through hole 111 and a second grip portion side through hole 112. Here, the first grip portion side through-hole 111 is a through hole located on the side closer to the plane mount 160, and the second handle side through hole 112 is located on the side farther from the plane mount 160. The side surfaces of the grip portion side side through holes 111 and 112 and the test gripper side surface through holes 241 and 242 of the test device fixing portion 200 are fixed by the side fixing screws 251 and 252, (200). In other words, the first grip portion side through hole 111 and the first test gripper side surface through hole 241 are fixed by the first side fixing screw 251, and the second grip portion side through hole 112 and the second And the test paperholding side through hole 242 is fixed with the second side fixing screw 252.

The testing device fixing part 200 serves as an intermediary device for mounting the grip part 100 to a testing machine (e.g., universal testing machine).

12, one end of a leg vertical axis 220 is connected to both ends of an upper horizontal axis 210 and a leg horizontal axis 230 is connected to the other end of the leg vertical axis 220 And the leg vertical axis 220 and the leg horizontal axis 230 constitute the L-shaped leg portion 215.

The leg horizontal shaft 230 is provided with two test gripping side surface side through holes 241 and 242 which are fixed with side holding screws 251 and 252 together with grip side holding holes 111 and 112, 100) and the test fixture unit (200).

The upper vertical axis 240 is provided at the upper end of the test fixture 200 and the upper vertical axis 240 is provided with a tester coupling part which is one end for coupling with a tester (for example, universal testing machine). After the cushioning member (bushing) 211 of the ring model is inserted into the tester coupling unit, the coupling end of the tester is inserted and the through hole of the coupling end of the tester and the through hole of the upper vertical shaft 240 ) With screws.

13, the fiber sensor 300 and the fiber sensor fixing piece 170 are inserted into the fiber sensor insertion hole 110 of the grip portion 100 of the test jig 10 of the fiber sensor of the present invention, And is fixed by a single-side adjusting screw 123. The grip portion 100 is inserted between the L-shaped leg portions 215 of the test fixture portion 200 and the grip portion side through holes 111 and 112 and the test grip portion side surfaces of the tester fixing portion 200 And the through holes 241 and 242 are fixed by the side fixing screws 251 and 252. After the cushioning member 211 is inserted into the upper vertical axis 240 of the test fixture 200 and the joint end of the tester is inserted, a screw is coupled to the through hole of the joint end of the tester and the through hole of the upper vertical axis 240 do.

Fig. 14 is a view showing a state where a test jig of the fiber sensor of Fig. 3 is attached to both ends of the fiber sensor, Fig. 15 is a side view of the state where the test jig of the fiber sensor is attached to both ends of the fiber sensor of Fig. And Fig. 16 is an explanatory view for explaining the direction of the force along the test jig of the fiber sensor in the tensile test.

14, the fiber sensor 300 is inserted and fixed in the fiber sensor insertion hole 110 in the test jig 10 of one side of the fiber sensor, and the fiber sensor 300 thus fixed is inserted into the semi-cylindrical holder 150 and the flat holder 160 are sequentially passed through the test jig 10 of the other fiber sensor. In the test jig 10 of the other side of the fiber sensor, first, the fiber sensor 300 passing through the semi-cylindrical holder 150 through the plane holder 160, then through the semi-cylindrical holder 150, (110).

FIG. 15A is a side view of FIG. 14, and FIG. 15B is a side view of FIG. 14, in which the fiber sensor 300 is shown in red.

15 (b), in the tensile test using the test jig 10 of the fiber sensor of the present invention, the fiber sensor 300 is a model equipped with hooks on both ends of the straight line, Part) facing outward. That is, the fiber sensor testing jig 10 at both ends of the fiber sensor 300 has point symmetry (right and left symmetry), so that the model of the fiber sensor 300 mounted on the fiber sensor testing jigs 10 is also point symmetrical Quot;).

16 (a), when the fiber sensor testing jig 10 at both ends of the fiber sensor 300 is positioned in the same direction as the surface on which the semi-cylindrical mounting table 150 is located, The force is not balanced because the form is applied only on the face. In this case, as the thickness of the fiber sensor 300 becomes thick, it may become a problem.

16 (b), when the fiber sensor testing jig 10 at both ends of the fiber sensor 300 are arranged such that when the faces on which the semi-cylindrical rest 150 are located are positioned on opposite sides of each other, It becomes a form to be applied only to balance the force. In this case, even if the thickness of the fiber sensor 300 is large, uniform force is exerted, so that more accurate inspection results can be obtained.

17 is an example of the fiber sensor test jig 10 of the present invention.

17 shows a state in which the jig 10 for testing a fiber sensor is mounted on a universal testing machine for tensile testing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only by the appended claims, and all equivalent or equivalent variations thereof are included in the scope of the present invention.

10: test jig 100: grip part
110: fiber sensor insertion through hole 111: side surface of the first grip portion
112: Side portion of the second grip portion 113: Through-hole for fixing braiding
123: Fixing piece adjusting screw 150: Semi cylindrical holder
160: plane mount 170: fiber sensor fixture
171: Fixing groove 180: Fixing piece holder
200: Test fixture 210: Upper horizontal axis
211: buffer member 215: L-shaped leg
220: leg vertical axis 230: leg horizontal axis
240: upper vertical axis 241: first test writing side side opening
242: Second test article side side opening 251: First side fixing screw
252: second side fixing screw 300: fiber sensor

Claims

A fiber sensor insertion cylinder having one end of a fiber sensor to be measured inserted into the through hole provided at one side of the upper surface and fixed by a fiber sensor fixing piece and a fixing piece adjusting screw;
A semi-cylindrical receptacle provided on a side of the fiber sensor insertion hole on the upper surface thereof, the semi-cylindrical receptacle being wound with a fiber sensor whose one end is fixed to the fiber sensor insertion tube;
A planar resting portion formed on a side surface of the semi-cylindrical rest, and configured to guide the fiber sensor passed through the semi-cylindrical rest to maintain a flattened state;
And a gripping portion provided with the gripping portion,
And an L-shaped leg provided at both ends of the upper horizontal axis. The grip unit is inserted and fixed between the L-shaped legs provided at both ends, and the upper vertical axis is provided at the upper center of the upper horizontal axis. Test jig for fiber sensor.

A grip unit having a semi-cylindrical holder for temporarily fixing a fiber sensor wound 180 degrees;
And an L-shaped leg portion provided at both ends of an upper horizontal axis, wherein the grip portion is inserted and fixed between L-shaped leg portions provided at both ends thereof;
And a test jig for testing the fiber sensor.

3. The apparatus according to claim 2,
And an upper vertical axis for coupling with the tester is provided at the upper center of the upper horizontal axis.

delete

3. The apparatus of claim 2, wherein the gripping portion
Further comprising a fiber sensor inserting passage which is inserted through one end of the fiber sensor to be measured and is fixed by a fiber sensor fixing piece and a fixing piece adjusting screw in a through hole provided on one side of the upper surface, Of the test jig.

6. The apparatus of claim 5, wherein the gripping portion
The testing jig as set forth in claim 1, further comprising a planar resting portion formed on one side of the semi-cylindrical rest, and configured to guide the fiber sensor passed through the semi-cylindrical rest to the flattened state.

7. The apparatus according to any one of claims 5 to 6, wherein the gripping portion
A through-hole for fixation threading, which is a through hole penetrating from the front surface to the fiber sensor insertion hole,
Wherein a fixing screw is inserted and controlled in the fixing hole for fixation so that the fiber sensor inserted between the side wall of the fiber sensor insertion hole and the fiber sensor fixing member is held by the fiber sensor fixing member.

8. The apparatus of claim 7, wherein the gripping portion
Wherein the fixing jig for preventing the fiber sensor fixing piece from falling downward through the fiber sensor insertion hole is provided on the bottom surface of the fiber sensor insertion hole on the bottom surface of the gripping portion.

9. The method of claim 8,
Wherein the fixture rest is provided on the bottom surface of the gripping portion so as to cover a part of the insertion hole from one side of the fiber sensor insertion hole on the bottom surface of the gripping portion.

8. The method of claim 7,
The L-shaped leg portion is composed of a leg vertical axis and a leg horizontal axis,
Wherein one end of the leg vertical axis is provided at both ends of the upper horizontal axis and the leg horizontal axis is provided at the other end of the leg vertical axis.

11. The method of claim 10,
Each of the left and right side surfaces of the grip portion has a side hole at the grip portion,
On each of the left and right leg horizontal axes,
And the jig for testing the fiber sensor is characterized in that the grip portion and the fixing portion of the test device are coupled by fixing the through hole of the grip portion and the side surface fixing screw of the test gripper side surface.

8. The method of claim 7,
Wherein the fiber sensor is a conductive fiber.

The first test jig and the second test jig are test jigs for the same fiber sensor. One end of the fiber sensor is held on the first test jig, the other end of the fiber sensor is held on the second test jig, In the test jig of the sensor,
A fiber sensor insertion cylinder which is inserted through one end of the fiber sensor and fixed by a fiber sensor fixing piece and a fixing piece adjusting screw with a through hole provided on one side of an upper surface;
A semi-cylindrical holder which is provided on the upper side of the fiber sensor insertion hole and has a semi-cylindrical shape and in which the fiber sensor is wound 180 degrees;
A flat resting portion formed on one side of a side of the semi-cylindrical rest, the resting portion being flat and guiding the fiber sensor to maintain the flattened state of the fiber sensor;
And a grip portion provided on the inner surface of the jig for testing the fiber sensor.

14. The method of claim 13,
Wherein the fiber sensor inserted and fixed in the fiber sensor insertion hole of the first test jig is transferred to the second test jig through the semi-cylindrical mount and the plane mount in this order.

15. The method of claim 14,
Wherein a fiber sensor passed through the second test jig in the order of a flat holder and a semi-cylindrical holder is inserted and fixed in the fiber sensor insertion hole through a semi-cylindrical holder.