Agricultural material dynamic characteristic test apparatus and method

Abstract

The invention discloses a device and a method for testing mechanical characteristics of agricultural materials. The device comprises a frame, a transmission system, tester accessories, and peripheral terminal equipment, wherein the transmission system is connected with one side of a movable cross-beam; and the peripheral terminal equipment includes a control main board, a display panel, a computer and a printer. The method comprises the following steps of: selecting corresponding test devices according to different requirements of tensile test, compression test, bend test and shear test; calibrating a force sensor and starting the tester and the computer; loading and recording a test sample; and inspecting the test parameter setting and checking to determine whether the test sample is valid. The invention can achieve accurate test of mechanical characteristics of agricultural materials by adopting small-range and high-accuracy force sensor, and the test device special for tensile test, compression test, bend test and shear test is designed. The test device and the software thereof are designed to achieve repeated loading of the materials, thus obtaining low-cycle mechanical characteristic data of agricultural materials.

Description

technical field [0001] The invention relates to a test device for the mechanical properties of agricultural materials, which is mainly used for stretching, compressing, bending, shearing, tearing, etc. Mechanics test and analysis. Background technique [0002] With the development of agricultural science, the research on the mechanical properties of agricultural materials has been paid more and more attention by researchers. The connection force between grains and stalks of agricultural crops is directly related to the difficulty of detaching the grains from the ears of agricultural crops and the shattering loss during threshing; The connection force between them is closely related to the stalk rate in the process of rice threshing. Therefore, the size of the connection force between the various parts of agricultural crops not only has a great relationship with the harvest loss and power consumption of the crops, but also has a great influence on the stalk rate of the grai...

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Problems solved by technology

[0003] Existing test devices for mechanical properties of materials are generally used in engineering materials, and their technical parameters and sensor accuracy cannot meet the measurement of mechanical property parameters of agricultural materials; at the same time, the structure of agricultural materials has its own characteristics and various types. It is significantly different from engineering materials. Therefore, for the testing of agricultural materials, the existing test equipment for mechanical properties of materials is obviously not suitable in terms of its structure; The mechanical property test of materials under weekly loading, therefore, the existing mechanical property test devices of materials cannot meet the unique research needs of agricultural materials

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