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Displacement controlled micro thin plate bending rigidity measurement device and working method thereof

A measuring device and displacement control technology, applied in the direction of using a stable bending force to test the strength of materials, etc., can solve the problems of unfavorable factory mass production inspection whether the rigidity meets the requirements, high equipment and test site requirements, and complex test methods. Achieve the effect of rapid measurement, easy maintenance and simple operation

Pending Publication Date: 2017-06-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the test method proposed by it is relatively complicated, has high requirements on equipment and test site, requires more human participation, and takes 2 minutes for one measurement, which is not conducive to large-scale production in the factory and whether the stiffness meets the requirements when the structure is assembled on site.

Method used

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  • Displacement controlled micro thin plate bending rigidity measurement device and working method thereof
  • Displacement controlled micro thin plate bending rigidity measurement device and working method thereof
  • Displacement controlled micro thin plate bending rigidity measurement device and working method thereof

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] The invention discloses a displacement-controlled miniature sheet bending stiffness measuring device, which comprises: a base, a test piece, a test piece clamping device, a measuring point positioning device, a measuring device, a signal processing device, and an operation and display device.

[0040] The base comprises a cuboid box-shaped base 1 with an upper opening and a base cover plate 2, which are connected by screws.

[0041] The specimen clamping device is composed of a clip 3, a clip 5, a stud 4 and a nut 6, wherein the clip 3 and the base cover 2 are connected by bolts, and the stud 4 and the clip 3 are connected by threads. The test piece 22 is placed horizontally on the clamp block 3, the contact length between the test piece 22 and the clamp block 3 in the long side direction is 9-10 mm, the opening of the clamp piece 5 passes through the stud 6, an...

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Abstract

The invention discloses a displacement controlled micro thin plate bending rigidity measurement device and a working method thereof. The measurement device comprises a pedestal, a test piece, a test piece clamping apparatus, a measuring point positioning apparatus, a measurement apparatus, a signal processing apparatus and an operation and display apparatus. A clamp block and a pedestal cover plate are connected through bolts, a stud and the clamp block are connected through thread, a clamping piece is provided with a hole, passes through the stud and can move up and down, a nut fixes the clamping piece, the test piece and the clamp block to achieve fixed constraint of one end of the test piece, and bending rigidity measurement can be carried out on a thin plate with one fixed constraint end and one free end. The device is suitable for bending rigidity measurement of a thin plate with a length of 100-200mm and a width of 50-150mm. rigidity measurement points can be adjusted through X direction horizontal guide rails and Y direction horizontal guide rails. The device can achieve one-key zero setting and measurement, can directly display the rigidity value, and is fast in measurement.

Description

[0001] Technical field: [0002] The invention relates to a displacement-controlled miniature sheet bending stiffness measuring device and a working method thereof, belonging to the field of instruments and meters of material science and mechanical manufacturing technology. [0003] Background technique: [0004] Thin plate is a material type commonly used in engineering structures, and it is widely used in structures such as aircraft and automobiles. Most engineering structures work under alternating loads, so the thin plates in the structure are generally also subject to alternating loads. Among these loads, the load perpendicular to the plane of the thin plate will cause the thin plate to bend and deform, and the stiffness of the thin plate will gradually degrade during repeated bending deformation, resulting in fatigue failure. Therefore, for some thin plate parts with high life requirements, it is necessary to design according to the structural fatigue life criterion at t...

Claims

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Application Information

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IPC IPC(8): G01N3/20
CPCG01N3/20
Inventor 姜文吴涛姚卫星张祥
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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