JPH0627698B2 - Specimen mounting device for compound environment test equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a complex environment test apparatus, and more particularly to a test piece mounting apparatus for the complex environment test apparatus.

[Conventional technology]

The recent development of material technology is remarkable, and in particular, the development of new organic materials using newly developed materials is remarkable. The environment in which these new materials are used is wide-ranging, ranging from the normal environment of air, room temperature, and atmospheric pressure to the extreme environment of radiation environment such as space and fusion devices, and cryogenic environment of superconducting equipment. Is being expanded. With the expansion of such usage environment, the reliability of materials in those special usage environments, especially the material deterioration characteristics, and the correlation between deterioration factors and environmental conditions, and environmental tests Has been positioned as an important technology.

In the conventional environmental test equipment, especially the environmental test equipment that can measure the mechanical characteristics in the state where the sample is heated to a high temperature, one application is available because the application is limited and the usage frequency is low. It was common to attach the sample of (1) to the desired environmental conditions and then measure the characteristics.

FIG. 3 is a partial cross-sectional view of a conventional environment test apparatus capable of measuring mechanical characteristics. In the figure, environmental test equipment
(25) is a constant temperature box (27) for creating a desired environment, a pull rod (3) fixed rod (4) that penetrates the wall of the constant temperature box (27) and is connected to a tensile tester (26), and Pull rod (3) Fixed rod
And a coupling tool (7b) coupled to (4). Constant Temperature Box (27)
Is provided with an air heating supply device (33) for raising the temperature inside the constant temperature box (27), and a hot air supply air passage (31) and a hot air return air passage (32) for circulating the heated air. ing. Further, since the pull rod (3) fixing rod (4) penetrates the constant temperature box (27) wall, when the inside of the constant temperature box (27) is heated, the constant temperature box (27) wall and the pull rod (3) are fixed. A heat insulating plug (30) designed to prevent the heat dissipation from the gap between the rod (4) and the movement of the pull rod (3) during mechanical characteristics measurement, and a constant temperature box (27) during the test. And a window (28) for observing the inside of the. Further, the constant temperature box (27) is attached to the mount (22), and the mount (22) and the pull rod (3) and the fixed rod (4) are arranged on the same center line.

When measuring the mechanical properties in a high temperature environment in the conventional environment test device (25) configured as described above, the test piece fixture (6b) is attached to the test piece (5) in advance, and the constant temperature box is attached. After opening the door (not shown) of (27), pull rod (3)
The test piece fixture (6b) to which the test piece (5) is fixed is connected using the pin (29) to the connection tool (7b) connected to both the fixed rods (4). After that, the door of the constant temperature box (27) is closed and the inside of the constant temperature box (27) is heated to the required temperature by using the air heating supply device (33). The air heated by the air heating supply device (33) is sent out by a fan incorporated in the air heating supply device (33), circulates in the constant temperature box (27) through the hot air supply air passage (31) and returns to the hot air return air passage.
It returns to the air heating supply device (33) through (32). Therefore, the test piece (5) is heated by heat conduction using air as a medium.
When the test piece (5) reaches the required temperature, the tensile test machine (26) is used to measure the mechanical properties of the test piece (5) at high temperature and record the data. When the measurement is completed, open the constant temperature box (27) door, and
(29) is removed and the test piece (5) is taken out together with the test piece fixture (6b), and then the test piece (5) is attached by the procedure described above, and the test piece (5) is heated in the same manner. Measure the mechanical properties. When the number of test pieces (5) is large, the above-mentioned contents are repeated.

[Problems to be solved by the invention]

As described above, in the conventional environment test apparatus capable of measuring mechanical properties, the test piece is removed, attached, or re-installed before the measurement of one test piece is completed and the measurement of the next test piece is performed. There are problems that it takes a lot of time to heat the test piece to the test conditions, and it is difficult for the test environment conditions to be the same for each test, and the reliability of the data decreases. In addition, with the recent remarkable development of new materials and the diversification of the environment in which the materials are used, it is necessary to grasp the characteristics of many test pieces and obtain reliable data. There was a big problem that it took a lot of time to obtain and the cost was very high.
Furthermore, since the test piece heating method uses air as a medium, there is a big problem that the mechanical properties cannot be measured under the environmental conditions simulating the space environment when the new material is used in the space environment. .

The present invention has been made in view of the above drawbacks, and aims to simulate a mixed environment (space environment,
A state in which multiple environmental conditions such as vacuum, temperature, ultraviolet rays, and radiation are combined. The same shall apply hereinafter) for the purpose of obtaining a composite environment test apparatus equipped with a test strip mounting apparatus capable of continuously testing a plurality of test strips under the same environmental conditions.

[Means for solving problems]

A test strip mounting apparatus for a composite environment test apparatus according to the present invention includes a vacuum container having an evacuation device, a plurality of test strips held in the vacuum container via a plurality of test strip fixtures, the test strip fixture, and A heat storage body that contacts at least one of the test pieces, a heat sink that slides in contact with the heat storage body to heat and cool the test piece, a radiation irradiation device that irradiates the test piece with radiation, and an ultraviolet ray that irradiates the test piece with ultraviolet light. An irradiation device, a mechanical property tester having a rod penetrating the inside of the vacuum container via a bellows, for testing the mechanical properties of the test piece, and an instrumental analysis device for measuring the chemical and physical structural properties of the sample. The test piece fixture provided and moved is moved, and the test piece held via the test piece fixture is sequentially attached to and detached from the connecting tool attached to the rod for the test. Kenhen is provided with a mounting device.

[Action]

In the present invention, a plurality of test piece fixtures are attached to the test piece attaching device, and if a plurality of test pieces are attached in advance, the test piece attaching device replaces and attaches the test pieces after each test. , Multiple test pieces can be continuously tested under the same environmental conditions. In addition, the heat sink allows rapid heating with a large temperature difference,
Cooling becomes possible.

Example of Invention

This invention creates a field that has the same effect as the space environment encountered by an artificial satellite in orbit, grasps the material deterioration characteristics of the material used for the artificial satellite in the space environment, and determines the deterioration factors and environmental conditions. It is about a complex environment tester, especially its test piece mounting device, for grasping the correlation and the like.

In a space environment, materials such as fiber-reinforced composite materials, dielectric materials, and various molding resins used for artificial satellites are thermally decomposed due to thermal vacuum to generate gas. These cause changes in material performance, and degassed components adhere to other equipment, which can cause satellite failure due to material deterioration. In order to accurately understand these problems, it is considered that the characteristics will change if the material exposed to the space environment is taken out into the air. It is most important to evaluate and study the mechanism.

In addition, in the large-scale space structure development concept currently being studied by the Japan Space Agency, etc.
It has been 0 years. Therefore, when the space environment deterioration is carried out on the ground, the similarity with the actual environment, the similarity, and 3
There is a problem with the acceleration of material deterioration that occurs in the space environment in 0 years. Therefore, a complex environment tester that can simulate a space environment and continuously evaluate a large number of samples in that state is now indispensable for establishing a reliability evaluation technique for satellite materials. ing.

A test piece mounting device which is a part of the composite environment test device of the present invention will be described below with reference to the drawings. Figure 1 (A) and Figure 1
(B) is a cross-sectional configuration diagram showing a basic embodiment of the sample mounting apparatus. In the figure, the composite environment test device (1) is a vacuum container (2), a mechanical property tester, in this case a pull rod (3) and a fixed rod (4) connected to a tensile tester (not shown), and a test piece. (5), a piece of paper piece fixing device (6a) attached to both ends of the test piece (5), and a connecting device (7) connected to the connecting rod (8).
a), the test piece (5) held by the test piece fixture (6a)
A rotary test piece mounting member (10), which can be individually mounted and has a heat storage body (11) for heating and cooling the test piece (5),
A drive shaft (13) for driving the test piece mounting member (10), and a positioning mechanism (1) for determining the rotation stop position of the test piece mounting member (10)
4), heat sink (17) slidingly contacting heat storage body (11) of test piece mounting member (10), shroud (21), vacuum exhaust device (23-1), ultraviolet irradiation device (23-2), radiation irradiation The device (23-3) is provided with an external device connection port (23) for connecting the device analyzer (23-4). Here, the test piece mounting device is a test piece mounting member (1
0), drive shaft (13), positioning mechanism (14), etc. A heater connected to the heat sink heating system (18) and a cooling conduit connected to the heat sink cooling system (19) are embedded in the heat sink (17). The heating / cooling means is a heat storage body (11), heat sink (17), heat sink heating system (18),
It is composed of a heat sink cooling system (19) and the like. The test piece mounting member (10) is provided with heat storage bodies (11) having good thermal conductivity and large heat capacity at the upper and lower portions. This upper heat storage (11)
The test piece fixture (6a) is fixed in a hanging manner to the heat storage body (11) and the test piece (5) and the test piece fixture (6a) are in contact with each other over a wide range of contact surfaces. In addition, the upper and lower heat storage (1
Similarly, 1) has a sliding contact surface with the heat sinks (17) provided on the upper and lower parts, and the heat storage body (11) of the test piece mounting member (10) is different from the fixed heat sink (17). It has a structure that can receive heat conduction while rotating. Further, a spring (12) is provided between the upper heat storage body (11) and the lower heat storage body (11), and the heat storage body (11) constantly heatsinks (17) even if thermal expansion and contraction occur. The structure is in contact with the sliding surface of.

The test piece (5) and the test piece fixture (6a) are fixed to the upper and lower heat storage bodies (11) so as to prevent them from rotating, tipping over, and falling. It is designed to move freely in the load direction. Further, the mounting position of the test piece fixture (6a) to be attached to the test piece mounting member (10) should be such that the pull rod is on the orbit of the test piece fixture (6a).
(3), the center line of the fixed rod (4) is arranged to come, and the connection between the test piece fixing tool (6a) and the connecting tool (7a) is performed by the rotation of the test piece mounting member (10). The test piece fixture (6a) is
It is designed to be attached to a). The rotation stop position of the test piece mounting member (10) at this time is designed by the positioning mechanism (14) so that the test piece (5) is on the same center line as the pull rod (3) and the fixed rod (4). ing. The test piece mounting member (10) is driven by a drive motor (16) by remote control.
The structure is such that rotation is given via the positioning mechanism (14) and drive shaft (13) by moving the.

Further, the pull rod (3) and the fixed rod (4) have a sealing structure by the bellows (9) in order to transmit the mechanical load while blocking the complex environment in the vacuum vessel (2) from the external environment. Further, in order to prevent heat dissipation from the drive shaft (13) of the test piece mounting member (10) to the vacuum vessel (2), a heat insulating bearing (20) having a heat insulating sleeve is provided.

In one embodiment of the present invention configured as described above,
When measuring mechanical properties in a complex environment, test pieces (5) in advance
Prepare a plurality of test pieces (5) with the test piece fixtures (6a) attached to them, open the door (not shown) of the vacuum vessel (2), and then put them in the vacuum vessel (2). On the provided test piece mounting member (10),
Test piece (5) with the test piece fixture (6a) prepared in advance
Install 4 pieces. Then, after closing the door of the vacuum container (2), the inside of the vacuum container (2) is made into a high vacuum. In this state, the heat sink (17) is used to heat or cool the test piece (5). The heat from the heat sink (17) heats and cools the test piece (5) and the test piece fixture (6a), which come into contact with the heat storage body (11) on a wide range, by heat conduction, through the heat storage body (11) in sliding contact. .
Further, in this state, the test piece (5) is deteriorated by irradiating with radiation, ultraviolet rays, etc. under a certain required complex environmental condition.
When the test piece (5) reaches the expected deterioration amount, the drive shaft (13) is driven by the drive motor (16) by remote control, and the test piece mounting member (10) is rotated to move the test piece (5). Attach it to the connector (7a). Then, using a tensile tester, move the crosshead,
Pull the test piece (5) with the pull rod (3) and measure the mechanical properties. Pull rod (3) is connected via bellows (9)
Since it is connected to (7a), a mechanical test can be performed from the outside of the vacuum vessel (2) while maintaining a complex environment.
After degrading the test piece (5) under certain required environmental conditions, the test piece mounting member (1
The reason why the (0) is rotated and attached to the connecting tool (7a) is to reduce heat loss due to heat conduction from the heated or cooled test piece (5) through the test piece fixing tool (6a).

When the test piece (5) breaks, the upper half of the test piece (5) remains suspended from the upper heat storage body (11) of the test piece mounting member (10), and the lower half of the test piece (5) is mounted on the test piece. Lower heat storage body (11) of member (10)
It remains in the form of riding. At the same time, the measurement data of the mechanical characteristics is processed and recorded by the mechanical characteristics data processing device (not shown), and the measurement of the first test piece (5) is completed. Therefore, the drive shaft (13) is driven by the drive motor (16) by remote control,
Rotate the test piece mounting member (10) to connect the test piece (5) to the connecting tool (7a)
When it is attached to, the next test can be performed.
By repeating this operation, once the inside of the vacuum vessel (2) has been set to the required environmental conditions, it is possible to continuously perform 4
It is possible to measure individual test pieces (5).

In the above-mentioned embodiment, after the test piece (5) was deteriorated under the required environmental conditions, the test piece mounting member (10) was rotated to mount the test piece (5) on the connector (7a). Although it was stated that the mechanical characteristics were measured, the test piece (5) was attached to the connecting tool (7a) in advance, and the mechanical characteristics of the mechanical characteristics were measured while heating, cooling, UV irradiation, and radiation irradiation were performed. It goes without saying that the measurement can be performed.

Further, the number of test pieces (5) to be attached to the test piece attachment member (10) is described as four, but it is limited to four as long as it can be provided in the vacuum container (2). It goes without saying that it is not a thing.

Further, in FIG. 1, the mechanical characteristic test is described by referring to the drawing of tensile test, but it can be easily estimated that the same effect can be obtained in compression test, bending test, etc. if the test jig is taken into consideration.

Further, although the drive shaft (13) for driving the test piece mounting member (10) is driven by the drive motor (16), the same effect can be obtained by using a drive mechanism using a magnet or the like.

Also, a test piece fixture (6a) attached to the test piece mounting member (10).
As for the mounting position of the test piece fixture (6a), the pull rod (3) and the fixed rod (4) were arranged so that their center lines were on the orbit of the test piece fixture (6a). As shown in the block diagram of another embodiment of the test piece attaching device of the present invention, the test piece fixing tool (6a) has a small mounting center circle and is attached to the connecting tool (7a). The same effect can be obtained even if the arm (24) is provided with a mechanism for moving the test piece (5) and the test piece fixture (6a) in parallel and attaching them to the connecting tool (7a). FIG. 2 (b) is a sectional view of the connector (7a) and the connecting rod (8) taken along the line AA in FIG. 2 (a).

〔The invention's effect〕

As described above, according to the present invention, a vacuum container having an evacuation device, a plurality of test pieces held in the vacuum container via a plurality of test piece fixtures, the test piece fixture and the test piece A heat storage body that is in contact with at least one of them, a heat sink that is in contact with the heat storage body to heat and cool the test piece, a radiation irradiation device that irradiates the test piece with radiation, an ultraviolet irradiation device that irradiates the test piece with ultraviolet rays, A mechanical property tester having a rod penetrating the inside of the vacuum container via a bellows for testing the mechanical properties of the test piece, and an instrumental analyzer for measuring the chemical and physical structural properties of the sample, Move the above test piece fixture,
Multiple test pieces can be installed in a complex environment by installing a test piece mounting device that sequentially mounts and unmounts the test piece held via the test piece fixing device on the connecting tool attached to the rod and provides the test. Since the mechanical characteristics of individual test pieces can be continuously measured under the same environmental conditions, there is an effect that a compound environmental test device can be obtained which can reduce the variation of data and improve the reliability of data.
Furthermore, once the inside of the vacuum container has been set to the required environmental conditions, it is possible to continuously measure multiple test pieces, which can significantly reduce the test time and significantly reduce the test cost. You can get the effect. Furthermore, the heat sink enables rapid heating and cooling with a large temperature difference.

[Brief description of drawings]

FIG. 1 (A) is a cross-sectional configuration diagram showing an embodiment of a test piece mounting apparatus which is a part of the composite environment test apparatus of the present invention, and FIG. 1 (B).
Is a sectional view taken along the line II of FIG. 1 (A), FIG. 2 is a block diagram showing another embodiment of a test piece mounting apparatus of a part of the present invention, and FIG. 3 is a sectional configuration of a conventional composite environment test apparatus. It is a figure. In the figure, (1) is a compound environment tester, (2) is a vacuum container,
(3) is a pull rod, (4) is a fixed rod, (5) is a test piece, (6
a) (6b) is a test piece fixture, (7a) (7b) is a connecting tool, (8) is a connecting rod, (9) is a bellows, (10) is a test piece mounting member, (11)
Is a heat storage body, (12) is a spring, (13) is a drive shaft, (14) is a positioning mechanism, (15) is a seal part, (16) is a drive motor, (17) is a heat sink, and (18) is a heat sink heating. System, (19) heat sink cooling system, (20) adiabatic bearing, (21) shroud, (22)
Is a stand, (23) is an external device connection port, (23-1) is a vacuum exhaust device, (23-2) is an ultraviolet irradiation device, (23-3) is a radiation irradiation device, and (23-4) is a device analysis. Device, (24) arm, (25) environmental test device, (26) tensile tester, (27) constant temperature box, (28) window, (29) pin, (30) hot air supply air The air passage, (32) is a hot air return air passage, and (33) is an air heating supply device. The heat storage body (11), the heat sink (17), the heat sink heating system (18), and the heat sink cooling system (19) constitute heating and cooling means, and the test piece mounting member (10), drive shaft (13), Positioning mechanism (14), drive motor (16) and arm (24)
The test piece mounting device is composed of In the drawings, the same reference numerals indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 59-3240 (JP, A) JP 49-17793 (JP, A) JP 56-19433 (JP, A) Actual development Sho 57- 72146 (JP, U) Hiroshi Tsuru "Artificial Satellite" (SHO58-4-10) Engineering Book P. 255-269

Claims (1)

[Claims] 1. A vacuum container having an evacuation device, a plurality of test pieces held in the vacuum container via a plurality of test piece fixtures, and contact with at least one of the test piece fixtures and the test pieces. Heat storage body, a heat sink that heats and cools the test piece by sliding contact with the heat storage body, a radiation irradiation device that irradiates the test piece with radiation, an ultraviolet irradiation device that irradiates the test piece with ultraviolet rays, and the vacuum through a bellows. A mechanical property tester having a rod penetrating the inside of the container for testing the mechanical properties of the test piece, and an instrumental analysis device for measuring the chemical and physical structural properties of the test piece are provided. A test piece mounting device was provided for moving the heat storage body together with the heat storage body and sequentially attaching and detaching the test piece held through the test piece fixture to and from the connecting tool attached to the rod. Specimen mounting apparatus composite environment test apparatus characterized.