KR100806707B1 - Tube-type tesile specimen with two parallel parts - Google Patents

Tube-type tesile specimen with two parallel parts Download PDF

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KR100806707B1
KR100806707B1 KR1020040115216A KR20040115216A KR100806707B1 KR 100806707 B1 KR100806707 B1 KR 100806707B1 KR 1020040115216 A KR1020040115216 A KR 1020040115216A KR 20040115216 A KR20040115216 A KR 20040115216A KR 100806707 B1 KR100806707 B1 KR 100806707B1
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specimen
parallel
tubular
tensile test
tensile
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KR20060075850A (en
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석창성
배봉국
조성근
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성균관대학교산학협력단
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/2806—Means for preparing replicas of specimens, e.g. for microscopal analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/18—Performing tests at high or low temperatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/02—Adapting objects or devices to another
    • B01L2200/026—Fluid interfacing between devices or objects, e.g. connectors, inlet details
    • B01L2200/027—Fluid interfacing between devices or objects, e.g. connectors, inlet details for microfluidic devices

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Abstract

본 발명은 평행부를 가지는 튜브형 인장시편에 관한 것으로서,The present invention relates to a tubular tension specimen having a parallel portion,

좌측 그립부(71)와 우측 그립부(72)를 가지는 인장시험법에서 규정하는 튜브형 인장시편에 있어서, 시편의 측면에, 대향하는 두 개의 관통공(61)을 형성하되, 상기 관통공(61)은 마주보는 양변이 평행하므로 대향하는 두 개의 평행부를 가지는 것을 특징으로 하므로,In the tubular tensile test specimen defined by the tensile test method having the left grip portion 71 and the right grip portion 72, two opposing through holes 61 are formed on the side surfaces of the specimen, and the through holes 61 are Since the opposite sides are parallel, it is characterized by having two parallel portions facing each other,

오목한 시편 평행부의 임의 표점거리에서 파단이 일어나기 때문에 정확한 변위값이 측정될 수 있고, 원통형의 시편을 직선 관통하는 것에 의해 제작되므로 제작이 용이하다는 이점이 있다.Since the breakage occurs at an arbitrary mark distance of the concave specimen parallel part, the accurate displacement value can be measured, and there is an advantage in that it is easy to manufacture because it is manufactured by passing straight through the cylindrical specimen.

Description

두 개의 평행부를 가지는 튜브형 인장시편{TUBE-TYPE TESILE SPECIMEN WITH TWO PARALLEL PARTS}TUBE-TYPE TESILE SPECIMEN WITH TWO PARALLEL PARTS}

도 1은, 종래의 C형 인장시편을 나타내는 사시도이다.1 is a perspective view showing a conventional type C tensile test piece.

도 2는, 종래의 다른 튜브형 인장시편과 플러그를 나타내는 측면도이다.Figure 2 is a side view showing another conventional tubular tension specimen and plug.

도 3은, 본 발명의 일 실시예에 따른 두 개의 평행부를 가지는 튜브형 인장시편을 나타내는 도면으로, (a)는 측면도이고, (b)는 부분 단면 사시도이다.3 is a view showing a tubular tensile specimen having two parallel portions according to an embodiment of the present invention, (a) is a side view, (b) is a partial cross-sectional perspective view.

도 4는, 본 발명의 다른 실시예에 따른 두 개의 평행부를 가지는 튜브형 인장시편을 나타내는 도면으로, (a)는 측면도이고, (b)는 부분 단면 사시도이다.4 is a view showing a tubular tensile specimen having two parallel portions according to another embodiment of the present invention, (a) is a side view, (b) is a partial cross-sectional perspective view.

< 주요 도면부호의 설명 ><Description of Major Reference Codes>

11 : C형 인장시편11: Type C tensile specimen

21 : 표점거리가 설정되는 시편 평행부21: parallel part of the specimen in which the gauge distance is set

31 : 튜브형 인장시편31: Tubular Tension Specimen

41 : 좌측 플러그41: left plug

42 : 우측 플러그42: right plug

51 : 시편 평행부51: parallel specimen

61 : 관통공61: through hole

71 : 좌측 그립부71: left grip

72 : 우측 그립부72: right grip

본 발명은 두 개의 평행부를 가지는 튜브형 인장시편에 관한 것으로서, 보다 상세하게는 두께가 얇은 튜브형 재료의 기계적 물성 평가용 인장시험에 사용되는 것으로 두 개의 평행부를 가지는 튜브형 인장시편에 관한 것이다. The present invention relates to a tubular tensile specimen having two parallel portions, and more particularly, to a tubular tensile specimen having two parallel portions, which is used in a tensile test for evaluation of mechanical properties of a thin tubular material.

일반적으로 인장시험은 재료의 기계적 물성평가에 사용되는 시험법으로, 이를 통하여 재료의 항복강도, 인장강도, 가공경화지수, 연신율 등의 데이터를 구할 수 있다.In general, the tensile test is a test method used to evaluate the mechanical properties of a material, through which data such as yield strength, tensile strength, work hardening index, and elongation can be obtained.

두께가 얇은 튜브형 인장시편은 KS나 ASTM규격에 의해서 제작되어지는데, 실제 인장시험을 수행할 경우에는 정확한 하중-변위(load-displacement) 선도를 얻기 위해 시편 평행부의 임의 표점거리(gage length)를 먼저 표시한 후, 인장시험기의 로드셀(load cell)과 연신측정장치(extensometer)를 이용하여 데이터를 얻고 있다.Thinner tubular tensile specimens are manufactured according to KS or ASTM standards. In the actual tensile test, the gage length of the parallel part of the specimen is first determined to obtain an accurate load-displacement diagram. After display, data were obtained using a load cell and an extensometer of a tensile tester.

도 1에는 종래의 C형 튜브 인장시편의 일반적인 구성이 도시되어 있다.Figure 1 shows the general configuration of a conventional C-type tube tension specimen.

도시된 바와 같이, C형 튜브 인장시편(11)은 오목한 시편 평행부의 임의 표점거리에 연신측정장치를 설치하여 변위값을 얻게 되어 있다. 이에 따라, 정확한 변위값이 측정될 수 있는 장점은 있으나, 시편 가공이 어렵고, 그립(grip)과 로드셀이 일직선 상에 존재하지 않는 구조(편심구조)로 인해 이를 일치시키기 위해 추가적인 그립 가공 또는 별도의 지그가 필요하다는 단점이 있었다.As shown in the figure, the C-type tube tension specimen 11 is provided with a displacement measuring device at an arbitrary mark distance at the concave specimen parallel part. Accordingly, there is an advantage that the exact displacement value can be measured, but it is difficult to process the specimen, and additional grip processing or separate to match this due to the structure (eccentric structure) in which the grip and the load cell do not exist in a straight line. There was a disadvantage of needing a jig.

한편, 도 2와 같은 종래의 튜브형 인장시편은 평이한 얇은 튜브(31)와, 상기 튜브를 안쪽에서 안내하기 위한 플러그(41, 42)로 구성되어 있어 제작이 용이하다는 장점이 있다. 그러나, 삽입되는 플러그의 형상 및 시편의 결함 등에 의해 파단부위가 일정하지 않기 때문에, 시편 평행부(51)의 임의 표점거리에 연신측정장치를 설치하여도 정확한 변위값을 측정하기 어렵다는 단점이 있었다.On the other hand, the conventional tubular tensile specimen as shown in Figure 2 has the advantage of being easy to manufacture because it consists of a flat thin tube 31, and the plug (41, 42) for guiding the tube from the inside. However, since the fracture site is not constant due to the shape of the plug to be inserted and the defect of the specimen, there is a disadvantage in that it is difficult to accurately measure the displacement value even when an extension measuring device is provided at an arbitrary mark distance of the specimen parallel part 51.

본 발명은 상기한 문제점을 해결하기 위해 안출된 것으로서, 발명의 목적은 시편과 하중선이 일치하고, 시편 평행부의 임의 표점거리에서 파단이 발생하도록 하여 정확한 변위값을 얻을 수 있으며 가공이 용이한 두 개의 평행부를 가지는 튜브형 인장시편을 제공하는데 있다.The present invention has been made to solve the above problems, the object of the invention is to match the specimen and the load line, so that the fracture occurs at any mark distance of the parallel part of the specimen can be obtained accurate displacement value and easy to process two To provide a tubular tension specimen having two parallel portions.

상기한 목적을 달성하기 위해, 본 발명에 따른 평행부를 가지는 튜브형 인장시편은 좌측 그립부와 우측 그립부를 가지는 인장시험법에서 규정하는 튜브형 인장시편에 있어서,In order to achieve the above object, the tubular tension specimen having a parallel portion according to the present invention is a tubular tension specimen specified in the tensile test method having a left grip and a right grip,

시편의 측면에, 대향하는 두 개의 관통공을 형성하되, 상기 관통공은 마주보는 양변이 평행하므로 대향하는 두 개의 평행부를 가지는 것을 특징으로 한다.On the side of the specimen, two opposite through holes are formed, and the through holes are characterized by having two parallel parts facing each other because the opposite sides are parallel.

여기서, 상기 관통공의 양변의 중앙부분을 추가적으로 평행하게 가공하여 2단의 평행부를 가지도록 할 수 있다.Here, the central portions of both sides of the through hole may be additionally processed in parallel to have two parallel portions.

또한, 상기 관통공의 길이방향 양단은 바깥쪽을 향한 원호형으로 되어 있는 것이 바람직하다.In addition, it is preferable that the both ends in the longitudinal direction of the through-hole are arcuate toward the outside.

이하, 첨부한 도면을 참조하여 본 발명에 따른 두 개의 평행부를 가지는 튜브형 인장시편의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the tubular tension specimen having two parallel portions according to the present invention.

실시예 1Example 1

도 3에, 본 실시예에 따른 튜브형 인장시편의 구조가 도시되어 있다.3, the structure of the tubular tensile test piece according to the present embodiment is shown.

도시된 바와 같이, 본 실시예에 따른 두 개의 평행부를 가지는 튜브형 인장시편은, 좌측 그립부(71)와 우측 그립부(72)를 가지는 인장시험법에서 규정하는 튜브형 인장시편을 그대로 이용할 수 있게 되어 있다.As shown, the tubular tensile specimen having two parallel portions according to the present embodiment, it is possible to use the tubular tensile specimen specified in the tensile test method having the left grip portion 71 and the right grip portion 72 as it is.

또한, 상기 시편의 측면에는, 양변이 평행한 관통공(61)이 대향되게 형성되어 있다. 이에 따라, 튜브형 인장시편에는 두 개의 평행부(21)가 대향되게 형성되어 있다.In addition, the side surface of the specimen is formed with the through holes 61 parallel to both sides. Accordingly, two parallel portions 21 are formed to face the tubular tensile specimen.

상기 튜브형 인장시편은 두께가 얇은 튜브형 인장시편을 직선 관통가공하여 구성할 수 있기 때문에, C형 인장시편에 비해서 가공이 용이하다.The tubular tensile test piece can be constructed by straight-through thin tubular tensile test piece, which is easier to process than the C-type test piece.

또한, 시편 표점거리가 설정된 평행부(21)의 단면적이 일반 튜브형 단면적에 비해서 작아, 평행부(21)에서 먼저 파단이 발생하여 C형 인장시편과 동일한 효과를 나타내므로, 보다 정확한 변위값을 얻을 수 있다.In addition, the cross-sectional area of the parallel portion 21, in which the specimen gauge distance is set, is smaller than that of the general tubular cross-sectional area, so that the fracture occurs first in the parallel portion 21, which has the same effect as that of the C-type tensile specimen, so that a more accurate displacement value can be obtained. Can be.

실시예 2Example 2

도 4에는 본 실시예에 따른 튜브형 인장시편의 구조가 도시되어 있다.Figure 4 shows the structure of the tubular tensile specimens according to this embodiment.

도시된 바와 같이, 본 실시예에 따른 두 개의 평행부를 가지는 튜브형 인장시편은, 실시예 1의 튜브형 인장시편에서, 상기 관통공(61)의 양변의 중앙부분을 추가적으로 평행하게 더 가공한 2단 튜브형으로 되어 있다.As shown, the tubular tension specimen having two parallel portions according to the present embodiment, in the tubular tension specimen of Example 1, a two-stage tubular shape further processed in parallel to the central portions of both sides of the through hole 61 in parallel. It is.

이에 따라, 본 실시예에 따른 2단 튜브형 인장시편의 평행부 단면적이 실시예 1의 튜브형 인장시편의 평행부 단면적에 비해 작기 때문에, 보다 안정적인 변위값 산출을 기대할 수 있다.Accordingly, since the cross-sectional cross-sectional area of the two-stage tubular tensile test piece according to the present embodiment is smaller than the parallel cross-sectional area of the tubular tensile test piece of Example 1, more stable displacement value calculation can be expected.

상기한 바와 같은 구성의 본 발명에 따르면, 관통공에 의해 형성된 시편 평행부의 임의 표점거리에서 파단이 일어나기 때문에 정확한 변위값이 측정될 수 있다.According to the present invention having the above-described configuration, since the breakage occurs at an arbitrary mark distance of the parallel part of the specimen formed by the through hole, an accurate displacement value can be measured.

또한, 원통형의 시편을 직선 관통하는 것에 의해 제작되므로 제작이 용이하다.In addition, it is easy to manufacture because it is produced by straight through the cylindrical specimen.

또한, 시편과 하중선이 일치하기 때문에 별도의 그립을 가공할 필요가 없어 공정이 간단하다.In addition, because the specimen and load line coincide, there is no need to process a separate grip, which simplifies the process.

Claims (3)

좌측 그립부(71)와 우측 그립부(72)를 가지는 인장시험법에서 규정하는 튜브형 인장시편에 있어서,In the tubular tensile test specimen defined by the tensile test method having a left grip portion 71 and a right grip portion 72, 시편의 측면에, 대향하는 두 개의 관통공(61)을 형성하되, 상기 관통공(61)은 마주보는 양변이 평행하므로 대향하는 두 개의 평행부를 가지며, 상기 관통공(61)의 길이방향 양단은 바깥쪽을 향하여 원호형으로 되어 있는 것을 특징으로 하는 튜브형 인장시편.On the side of the specimen, two opposing through-holes 61 are formed, but the through-holes 61 have two opposing parallel parts because the opposite sides are parallel to each other, and both ends of the through-hole 61 in the longitudinal direction A tubular tensile specimen, characterized in that it is arcuate toward the outside. 제1항에 있어서, The method of claim 1, 상기 관통공(61)의 양변의 중앙부분을 추가적으로 평행하게 가공하여 2단의 평행부를 가지는 튜브형 인장시편.Tube-type tensile test piece having two parallel portions by processing the central portion of both sides of the through hole 61 in parallel. 삭제delete
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07260654A (en) * 1994-03-24 1995-10-13 Tanaka Kikinzoku Kogyo Kk High temperature tension test piece and test method
JPH08247907A (en) * 1995-03-08 1996-09-27 Nippon Steel Corp Manufacture of tensile fatigue test piece having notch on one side

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07260654A (en) * 1994-03-24 1995-10-13 Tanaka Kikinzoku Kogyo Kk High temperature tension test piece and test method
JPH08247907A (en) * 1995-03-08 1996-09-27 Nippon Steel Corp Manufacture of tensile fatigue test piece having notch on one side

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