KR20170081853A - Load applying apparatus of multi train specimen - Google Patents

Load applying apparatus of multi train specimen Download PDF

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Publication number
KR20170081853A
KR20170081853A KR1020160000806A KR20160000806A KR20170081853A KR 20170081853 A KR20170081853 A KR 20170081853A KR 1020160000806 A KR1020160000806 A KR 1020160000806A KR 20160000806 A KR20160000806 A KR 20160000806A KR 20170081853 A KR20170081853 A KR 20170081853A
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KR
South Korea
Prior art keywords
load
test
ball
lower beam
train
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KR1020160000806A
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Korean (ko)
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KR101779282B1 (en
Inventor
윤은섭
김홍덕
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한국수력원자력 주식회사
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Priority to KR1020160000806A priority Critical patent/KR101779282B1/en
Publication of KR20170081853A publication Critical patent/KR20170081853A/en
Application granted granted Critical
Publication of KR101779282B1 publication Critical patent/KR101779282B1/en

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    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • 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
    • G01N3/02—Details
    • G01N3/04—Chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • G01N2203/0226—High temperature; Heating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/023—Pressure
    • G01N2203/0232—High pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0236—Other environments
    • G01N2203/024—Corrosive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0264—Beam
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/04—Chucks, fixtures, jaws, holders or anvils
    • G01N2203/0405—Features allowing alignment between specimen and chucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/04—Chucks, fixtures, jaws, holders or anvils
    • G01N2203/0464—Chucks, fixtures, jaws, holders or anvils with provisions for testing more than one specimen at the time

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  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The present invention relates to a load applying device for a multi-train test specimen which simultaneously applies a load to several test specimens. More particularly, the present invention relates to a load applying device for a multi- And a load applying device for a multi-train test piece capable of securing data.
For this purpose, the present invention is a multi-layered structure in which a plurality of test pieces (1) are connected in parallel between a top plate (2) and a lower beam (3) Each of the plurality of test pieces 1 is connected to the upper plate 2 and the upper and lower beams 3a of the lower beams 3 by ball connection portions 4, And the lower end beam 3b is connected to the lower beam 3a by another ball connecting portion 4. [

Description

[0001] The present invention relates to a load applying apparatus for a multi-train specimen,

The present invention relates to a load applying device for a multi-train test specimen which simultaneously applies a load to several test specimens. More particularly, the present invention relates to a load applying device for a multi- And a load applying device for a multi-train test piece capable of securing data.

In order to obtain the durability analysis evaluation technique of mechanical equipment or structure materials, evaluation of the mechanical properties of precise metal materials should precede normally. In the high temperature / high pressure hydrochemical or steam environment (for example, 360 ° C, 20Mpa) And in the case of stress corrosion cracking tests, it is carried out in a pressure vessel to simulate the test environment.

In the conventional high-temperature / high-pressure environmental test, much time and cost are required for the test preparation, so that several identical test pieces 101 are simultaneously mounted in parallel on the upper and lower plates 102.103 as shown in FIG. A characteristic experiment was performed.

5, it is necessary to maintain the same tensile speed as in the arrow direction of FIG. 5. However, in the experiment in which the same load is applied to each test piece 101, the longitudinal strain is different from that of the other test pieces When a test piece having a larger size or having different mechanical characteristics is used at the same time, the load is unevenly distributed to each test piece 101, which adversely affects the experimental result data.

Therefore, it is important to obtain reliable data of materials used for designing a component of a specific material. In the past, it has been necessary to obtain accurate test data because the inaccurate test data is obtained.

(Patent Document 0001) Korean Patent No. 10-1345064 (December 31, 2013).

Accordingly, the present invention has been made in view of the above-described conventional problems, and it is an object of the present invention to provide a method and a device for testing a test specimen by performing a test of mechanical characteristics and stress corrosion cracking in a static load environment by simultaneously mounting a plurality of test specimens in a high temperature / The present invention provides a load applying device for a multi-train test specimen.

In order to accomplish the above object, the present invention provides a multi-train test piece load applying device for performing a stress corrosion cracking test by applying a load in a state in which a plurality of identical test pieces are connected between an upper plate and a lower plate, Each of the plurality of test specimens is connected to the top and bottom beams of the top and bottom beams by a ball connection, and the bottom and bottom beams are connected to the bottom connection by a ball connection.

Further, the present invention is characterized in that the upper and lower beams of the lower beam are arranged in two parallel structures, the two upper and lower beams are connected to a single lower and lower beam spaced apart from the lower side in a right angle direction, And is connected to a load applying device spaced apart from the lower side via a ball connection portion.

The load applying device of the multi-train test piece according to the present invention can acquire accurate experimental data in the mechanical properties of the material and the stress corrosion cracking test in a static load environment by simultaneously mounting several identical test pieces, .

FIG. 1 is a view showing a load part and a device of a multi-train test piece according to the present invention,
FIG. 2 is a plan view of the top plate in FIG. 1,
FIG. 3 is a plan view of the lower beam in FIG. 1,
4 is an enlarged sectional view taken along the line I-I in Fig. 1,
FIG. 5 is a view showing a conventional multi-train test piece load application device.

The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

FIG. 1 is a view showing a loading apparatus and a device of a multi-train test piece according to the present invention. In FIG. 1, four identical test pieces (1) are shown mounted, but the number of test pieces may be varied Of course.

The present invention relates to a multi-train test specimen (1) for performing a stress corrosion cracking test by applying a load in a state in which a plurality of the same test pieces (1) are connected in parallel between a top plate (2) and a lower beam Each of the plurality of test pieces 1 is connected to the upper plate 2 and the upper end lower beam 3a of the lower beam 3 by ball connection portions 4, And the lower-end lower beam 3b is connected to another ball connecting portion 4 by the other ball connecting portion 3a.

Here, the upper and lower lower beams 3a and 3b are arranged in two parallel structures, and the two upper and lower lower beams 3a are separated from each other by a single lower end lower beam 3b, And the lower end lower beam 3b is connected to a load applying device spaced apart from the lower side via a ball connecting part 4. [

The spherical balls 4a and the spherical balls 4a are connected to each other through the ball connecting portion 4 of the test piece 1 connected between the top plate 2 and the upper end lower beam 3a, (1) or a plurality of test specimens (1) are larger than the other test specimens or a plurality of test specimens so that the warpage of the lower beam (3) The allowable difference d is formed in the ball connecting portion 4 so that it is possible to absorb the difference in the longitudinal deformation amount of the multiple test pieces.

In addition, a ball connecting portion 4 for connecting upper and lower end lower beams 3a and 3b of the lower beam 3 and a ball connecting portion 4 for connecting the lower end lower beam 3b and the load applying device, It is a matter of course that a hemispherical groove 4b is formed in a portion contacting the ball 4a and a tolerance d for absorbing a difference in deformation amount in the longitudinal direction is formed.

The load applying apparatus of the multi-train test specimen according to the present invention is characterized in that, in a pressure vessel having a high temperature / high pressure hydrochemical and steam environment, mechanical properties such as tensile characteristics and load unbalance It is possible to obtain more accurate experimental data because the same load can be imposed.

1: test piece, 2: top plate,
3: lower beam, 3a: upper lower beam,
3b: lower lower beam, 4: ball connector,
4a: spherical ball, 4b: hemispherical groove,
d: Tolerance.

Claims (4)

The load of the multi-train test specimen, in which a load is applied in a state where the same test piece (1) is connected in parallel between the upper plate (2) and the lower beam (3) In the apparatus,
Each of the plurality of test pieces 1 is connected to the upper plate 2 and the upper end lower beam 3a of the lower beam 3 by a ball connection part 4. The lower end beam 3a is connected to the lower end beam 3a, (3b) are connected to another ball connecting portion (4).        2. The apparatus according to claim 1, characterized in that the upper and lower lower beams (3a) of the lower beam (3) are arranged in two parallel structures, and the two upper and lower lower beams (3a) And the lower end lower beam (3b) is connected to a load applying device spaced apart from the lower side via a ball connection part (4).        The ball joint according to claim 1, wherein the ball connection portion (4) of the test piece (1) connected between the top plate (2) and the upper end lower beam (3a) is formed at a portion where the spherical ball And a hemispherical groove (4b) is formed and connected to each other.        The ball joint according to claim 3, wherein a tolerance (d) for allowing the lower beam (3) to be distorted is formed in the ball connection portion (4) Load application of multi-train test specimens,
KR1020160000806A 2016-01-05 2016-01-05 Load applying apparatus of multi train specimen KR101779282B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160000806A KR101779282B1 (en) 2016-01-05 2016-01-05 Load applying apparatus of multi train specimen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160000806A KR101779282B1 (en) 2016-01-05 2016-01-05 Load applying apparatus of multi train specimen

Publications (2)

Publication Number Publication Date
KR20170081853A true KR20170081853A (en) 2017-07-13
KR101779282B1 KR101779282B1 (en) 2017-09-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11573168B1 (en) * 2022-04-05 2023-02-07 Kuwait Institute For Scientific Research Multiple rig stress corrosion cracking testing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11573168B1 (en) * 2022-04-05 2023-02-07 Kuwait Institute For Scientific Research Multiple rig stress corrosion cracking testing device

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Publication number Publication date
KR101779282B1 (en) 2017-09-18

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