CN218629246U

CN218629246U - NOMEX paper honeycomb bonding performance mechanical performance testing device

Info

Publication number: CN218629246U
Application number: CN202221876047.0U
Authority: CN
Inventors: 刘晓菲; 周翔; 马宝庆
Original assignee: AVIC Research Institute Special Structures Aeronautical Composites
Current assignee: AVIC Research Institute Special Structures Aeronautical Composites
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-03-14
Anticipated expiration: 2032-07-20

Abstract

The utility model belongs to the technical field of tooling design, a NOMEX paper honeycomb splices performance mechanics capability test device is disclosed, the device includes two identical sub-devices, and every sub-device includes: the inverted U-shaped plate, the two inner plates and the four bolts are arranged on the outer side of the U-shaped plate; the inner plates are rectangular plates, and the two inner plates are respectively arranged on the left side and the right side inside the U-shaped plate; two vertical plates of the U-shaped plate are provided with two threaded holes; two bolts penetrate through the threaded holes to fix the inner plate and the vertical plate of the U-shaped plate; the distance between the inner plate and the vertical plate is adjusted through the adjusting bolt.

Description

NOMEX paper honeycomb bonding performance mechanical performance testing device

Technical Field

The utility model belongs to the technical field of the frock design, in particular to NOMEX paper honeycomb splices performance mechanics capability test device.

Background

The splicing performance of NOMEX paper honeycombs with different thicknesses or different cell side lengths is tested, and a testing device needs to have adjustability; and applying a tensile load to the NOMEX paper honeycomb core sample along a direction vertical to the splicing direction of the foaming glue by using a clamp, so that the splicing position of the foaming glue is separated and damaged. When testing NOMEX paper honeycomb's concatenation performance, adopt eight bolts to fasten the sample between testing arrangement's upper and lower dull and stereotyped, testing arrangement is connected to the chuck department of testing machine respectively.

The similar scheme is as follows: the multi-bee-lattice bolt type clamp is adopted in the test method for the separation strength of the core material adhesive tape, but the bolt type clamping mode is easy to damage at a bolt position, so that the test result is influenced; and the many samples of bee check quantity, the bolt quantity that needs is many, has reduced test efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a NOMEX paper honeycomb splices performance mechanics capability test device adopts this device, can guarantee the validity of sample atress process to guarantee the precision and the efficiency of test.

A NOMEX paper honeycomb bonding performance mechanical performance testing device comprises two identical sub-devices, each sub-device comprises: the inverted U-shaped plate, the two inner plates and the four bolts are arranged on the outer side of the U-shaped plate;

the inner plates are rectangular plates, and the two inner plates are respectively arranged on the left side and the right side inside the U-shaped plate;

two threaded holes are formed in the two vertical plates of the U-shaped plate;

two bolts penetrate through the threaded holes to fix the inner plate and the vertical plate of the U-shaped plate; the distance between the inner plate and the vertical plate is adjusted through the adjusting bolt.

Further, the width of the inner plate is smaller than that of the vertical plate of the U-shaped plate.

Further, the bolt is attached at 1/2 width of the inner panel.

Further, the bolt diameter is 10mm.

Furthermore, a chuck is arranged in the center of the upper end face of the flat plate of each U-shaped plate and used for being connected with a mechanical testing machine.

Furthermore, scale marks are arranged on the side end face of the plane of the U-shaped plate.

Has the advantages that: through this application the device, can realize the centering nature of sample and test device in the clamping process to have the uniformity at the atress process, guarantee the atress in honeycomb concatenation department, guaranteed accuracy, precision and the efficiency of software testing. The clamping mode of bolt-up has realized the variety of test sample thickness, bee check length of side and shape, has the commonality and can reuse, has saved test equipment cost and time greatly.

Drawings

FIG. 1 is a front view of two sub-assembly configurations;

FIG. 2 is a top view of a single sub-assembly;

FIG. 3 is a left side view of a test apparatus containing a NOMEX paper honeycomb specimen;

in the figure, 1 is a sub-device connected with a chuck on a mechanical testing machine; 2 is a sub-device connected with a lower chuck of the mechanical testing machine; 3 is an inner plate, 4 is a bolt, and 5 is a honeycomb sample.

Detailed Description

The utility model relates to a test device of NOMEX paper honeycomb concatenation performance, as shown in FIG. 1 and FIG. 2, this structure mainly has sub-device 1,

sub-device

2, 4 piece inner panels 3 and 8 bolts 4 to constitute.

The NOMEX paper honeycomb sample 5 is placed between two inner plates 3 of the sub-device 1, the adjusting bolts 4 are fastened, the sample is placed between the two inner plates 3 of the sub-device 2, and the adjusting bolts 4 are fastened, so that the sample is tightly attached to the inner plates 3 and is located at the central line position of the plane side end faces of the sub-device 1 and the sub-device 2.

The sample is tightly attached to the inner plates 3 in the

sub-devices

1 and 2 by adopting the bolts 4 for fastening, so that the centering performance between the sample and the

sub-devices

1 and 2 is ensured;

the bolts 4 can be adjusted, so that honeycomb samples with different thicknesses can be tested, the test types are diversified, and the inconvenient operation caused by bolts with different diameters for different cell side lengths and shapes is avoided;

and realizing an effective failure mode of NOMEX paper honeycomb splicing test for dipping the wave-absorbing material, and obtaining effective test data.

Principle of operation

As shown in fig. 3, the sub-device 1 and the sub-device 2 are mounted on the upper and lower grips of the testing machine, respectively, a sample is placed between the inner plates 3 of the sub-device 1, the adjusting bolt 4 is fastened, the zero point of the testing machine is adjusted in a state where the sample 5 is free to fall, the sample is placed between the inner plates 3 of the sub-device 2, and the adjusting bolt 4 is fastened. The sample is closely attached to the inner plate 3 and is positioned on the center line of the planar side end surfaces of the daughter device 1 and the daughter device 2.

Claims

1. A NOMEX paper honeycomb glueing performance mechanical property testing arrangement which characterized in that: the device comprises two identical sub-devices, each sub-device comprising: the inverted U-shaped plate, the two inner plates and the four bolts are arranged on the outer side of the U-shaped plate;

two threaded holes are formed in the two vertical plates of the U-shaped plate;

2. The apparatus of claim 1, wherein: the width of the inner plate is smaller than that of the vertical plate of the U-shaped plate.

3. The apparatus of claim 2, wherein: the bolt is attached at 1/2 width of the inner panel.

4. The apparatus of claim 1, wherein: the bolt diameter is 10mm.

5. The apparatus of claim 1, wherein: and a chuck is arranged at the center of the upper end face of the flat plate of each U-shaped plate and is used for being connected with a mechanical testing machine.

6. The apparatus of claim 1, wherein: and scale marks are arranged on the end surface of the side of the plane of the U-shaped plate.