CN-121994612-A - Ceramic matrix composite high temperature tensile creep testing arrangement

CN121994612ACN 121994612 ACN121994612 ACN 121994612ACN-121994612-A

Abstract

The invention relates to the technical field of material tensile test and detection, and discloses a ceramic matrix composite high-temperature tensile creep test device, which comprises a tensile testing machine, wherein a lifting plate capable of lifting is arranged on the tensile testing machine, a first clamp is arranged on the tensile testing machine, the first clamp is arranged on the tensile testing machine through a vertical rod, a second clamp is arranged on the lifting plate through a vertical rod, the second clamp is arranged on the lifting plate, the first clamp is opposite to the second clamp, a fixing plate is fixed on a body of the tensile testing machine, and the fixing plate is arranged along the height direction of the tensile testing machine. According to the invention, the ceramic matrix composite material in the testing process is completely wrapped through the closed cover body structure formed by splicing the double movable covers, so that high-speed scraps generated when the ceramic matrix composite material is broken are effectively prevented from splashing, and the risk of mechanical injury and high-temperature scalding to operators is avoided.

Inventors

ZHAI ZHAOYANG
XU JINZHAO
DU CHUNHUA
ZHANG DONGYA
ZHANG YANCHAO
YIN MINGHU

Assignees

西安理工大学

Dates

Publication Date: 20260508
Application Date: 20260408

Claims (10)

1. The high-temperature tensile creep testing device for the ceramic matrix composite is characterized by comprising a tensile testing machine (11), wherein a lifting plate (13) capable of lifting is arranged on the tensile testing machine (11), a first clamp (12) is arranged on the tensile testing machine (11), the first clamp (12) is arranged on the tensile testing machine (11) through a vertical rod, a second clamp (14) is arranged on the lifting plate (13), the second clamp (14) is arranged on the lifting plate (13) through the vertical rod, the first clamp (12) is opposite to the second clamp (14), a fixed plate (15) is fixed on the body of the tensile testing machine (11), and the fixed plate (15) is arranged along the height direction of the tensile testing machine (11); The tensile testing machine is characterized in that a vertical plate is fixed on the tensile testing machine (11), a protection component is arranged on the tensile testing machine (11) and consists of two protection structures, each protection structure comprises a movable cover (21), each movable cover (21) is provided with a cleaning component and a shielding component inside, a driving component is arranged on the vertical plate and used for driving the two movable covers (21) to move, and a pushing component is arranged on the vertical plate.
2. The ceramic matrix composite high temperature tensile creep testing device according to claim 1, wherein in the protective structure, first opening (22) has been seted up on the top of removal cover (21), second opening (23) has been seted up to the bottom, impurity removal mouth (24) has been seted up to the side of removal cover (21), but install swing apron (25) the side of removal cover (21), and apron (25) are just to impurity removal mouth (24) setting, the bottom of removal cover (21) is provided with collecting box (26), and collecting box (26) are just to impurity removal mouth (24) setting, the protective structure still includes curb plate (27), curb plate (27) are fixed on tensile testing machine (11), the side of curb plate (27) is fixed with two urceolus (28), all slides in two urceolus (28) and is provided with interior pole (29), two interior pole (29) all are connected with removal cover (21) fixedly.
3. The ceramic matrix composite high temperature tensile creep testing device according to claim 2, wherein the inner face of the outer cylinder (28) is bonded to the outer face of the inner rod (29).
4. The ceramic matrix composite high temperature tensile creep testing device according to claim 1, wherein the cleaning assembly comprises a movable plate (31), bristles (32) are arranged at the bottom end of the movable plate (31), the bristles (32) are in contact with the inner bottom surface of the movable cover (21), a guide block (33) is fixed at the top end of the movable plate (31), a guide rod (34) is fixed inside the movable cover (21), the guide block (33) is slidably sleeved on the guide rod (34), the guide block (33) is connected with the movable cover (21) through a first spring (35), and a push rod (36) is fixed on the side surface of the movable plate (31), and the push rod (36) is arranged opposite to the cover plate (25).
5. The ceramic matrix composite high temperature tensile creep testing device according to claim 4, wherein the shielding assembly comprises a movable baffle plate (41) and a fixed plate (43), the fixed plate (43) is fixed on the inner bottom surface of the movable cover (21), a sinking groove (42) is formed in the bottom surface of the movable baffle plate (41), the fixed plate (43) slides in the sinking groove (42), the movable baffle plate (41) is opposite to the second opening (23), and the movable baffle plate (41) is connected with the fixed plate (43) through a second spring (44).
6. The ceramic matrix composite high temperature tensile creep testing device according to claim 5, wherein both ends of the movable baffle (41) are provided with inclined surfaces.
7. The ceramic matrix composite high temperature tensile creep testing device according to claim 1, wherein the driving assembly comprises a first rotating shaft (51), a second rotating shaft (52) and a first rack (54), wherein the first rotating shaft (51) and the second rotating shaft (52) are both rotatably installed on the side surfaces of the vertical plates, the first rotating shaft (51) and the second rotating shaft (52) are in transmission connection through a transmission piece (53), gears (56) are fixedly sleeved on the first rotating shaft (51) and the second rotating shaft (52), the first rack (54) is fixed on the side surfaces of the lifting plate (13) through a connecting plate (55), the first rack (54) is meshed with the gears (56) on the second rotating shaft (52), the driving assembly further comprises two second racks (57), the two second racks (57) are respectively fixed on the side surfaces of the two movable covers (21) through connecting blocks (58), and the two second racks (57) are meshed with the gears (56) on the first rotating shaft (51).
8. The ceramic matrix composite high temperature tensile creep testing device according to claim 7, wherein the pushing assembly comprises two mounting plates (61) and two pushing rods (63), each mounting plate (61) is provided with an inclined plane, the two mounting plates (61) are connected with the vertical plates through mounting rods (62), the two pushing rods (63) are respectively inserted on the two movable covers (21) in a sliding manner, and the two pushing rods (63) are respectively opposite to the inclined planes of the two mounting plates (61).
9. The ceramic matrix composite high temperature tensile creep testing device according to claim 2, wherein when the two moving caps (21) are aligned, the two first openings (22) together form a circular port and the two second openings (23) together form a circular port.
10. The ceramic matrix composite high temperature tensile creep testing device according to claim 4, wherein the width of the moving plate (31) is adapted to the width of the moving cover (21).

Description

Ceramic matrix composite high temperature tensile creep testing arrangement Technical Field The invention relates to the technical field of material tensile test and detection, in particular to a high-temperature tensile creep test device for a ceramic matrix composite material. Background The high-temperature tensile creep testing device for the ceramic matrix composite is equipment for evaluating long-term deformation behavior and mechanical properties of the material under a high-temperature and constant tensile stress environment, and is used for measuring key parameters such as creep strain, steady-state creep rate, fracture life and the like of a sample under a high temperature. When the ceramic matrix composite is subjected to tensile testing, when the ceramic matrix composite is broken, broken materials can fly to collapse chips, the flying to collapse chips generated by material breakage can cause various defects, such as direct personal injury risks to testers, the splashed chips can scratch the skin, hit key parts such as eyes and the like, serious safety accidents are caused, the testing equipment can be damaged due to chip impact, components such as a precise loading system and a deformation measuring device can be scratched and collided by the chips, the equipment accuracy is reduced or even faults are caused, the accuracy and the reliability of subsequent testing are affected, the equipment maintenance cost and the downtime are increased, the testing environment can be polluted by the chips, the chips can remain in the inside or surrounding areas of the testing device, and the cleaning is difficult and the subsequent testing can be interfered. Therefore, there is a need to design a ceramic matrix composite high temperature tensile creep testing apparatus to address the above problems. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a high-temperature tensile creep testing device for a ceramic matrix composite. In order to achieve the above purpose, the present invention adopts the following technical scheme: The high-temperature tensile creep testing device for the ceramic matrix composite comprises a tensile testing machine, wherein a lifting plate capable of lifting is arranged on the tensile testing machine, a first clamp is arranged on the tensile testing machine, the first clamp is arranged on the tensile testing machine through a vertical rod, a second clamp is arranged on the lifting plate, the second clamp is arranged on the lifting plate through the vertical rod, the first clamp is opposite to the second clamp, a fixing plate is fixed on the tensile testing machine body, and the fixing plate is arranged along the height direction of the tensile testing machine; The tensile testing machine is fixedly provided with a vertical plate, the tensile testing machine is provided with a protection component, the protection component is composed of two protection structures, each protection structure comprises a movable cover, each movable cover is internally provided with a cleaning component and a shielding component, the vertical plate is provided with a driving component for driving two movable covers to move, and the vertical plate is provided with a pushing component. As a preferable technical scheme of the invention, in the protection structure, a first opening is formed in the top end of the movable cover, a second opening is formed in the bottom end of the movable cover, a impurity discharging opening is formed in the side face of the movable cover, a swingable cover plate is arranged on the side face of the movable cover, the cover plate is arranged opposite to the impurity discharging opening, a collecting box is arranged at the bottom end of the movable cover, the collecting box is arranged opposite to the impurity discharging opening, the protection structure further comprises a side plate, the side plate is fixed on a tensile testing machine, two outer cylinders are fixed on the side face of the side plate, inner rods are arranged in the two outer cylinders in a sliding mode, and the two inner rods are fixedly connected with the movable cover. In a preferred embodiment of the present invention, the inner surface of the outer tube is bonded to the outer surface of the inner rod. As a preferable technical scheme of the invention, the cleaning component comprises a movable plate, bristles are arranged at the bottom end of the movable plate and are in contact with the inner bottom surface of the movable cover, a guide block is fixed at the top end of the movable plate, a guide rod is fixed in the movable cover, the guide block is slidably sleeved on the guide rod, the guide block is connected with the movable cover through a first spring, and a push rod is fixed on the side surface of the movable plate and is opposite to the cover plate. As a preferable technical scheme of the invention, the shielding assembly comprises a movable baffle a