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

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...

AI Technical Summary

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.

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