Fast measuring apparatus and measuring method for mechanical property of thin slab type wood materials

Abstract

The invention relates to a device for quickly measuring the mechanical property of a sheet-typed woody material, consisting of two parts: a mechanical structure part and a data processing part. The mechanical structure part also comprises four parts: a basic frame part, a specimen clamping part, an initial stressing part and a vibration sensing part. The data processing part comprises a signal conditioning box and a computer. The measuring method mainly comprises the following steps of: (1) accurately setting the initial displacement value; (2) clamping the specimen; (3) setting the storage directory and the filename of the measurement result, and inputting the basic parameters of the specimen; (4) zeroing the displacement output of the laser sensor; (5) measuring the static MOE; (6) measuring the dynamic MOE; (7) storing and displaying the measurement result. The measuring device can measure the mechanical property of the sheet-typed woody material quickly and conveniently. Compared to the traditional measuring devices and methods, the device and the method for quick measuring the mechanical property of a sheet-typed woody material in the invention save time and cost and are easyfor operation.

Description

Device and method for rapid measurement of mechanical properties of thin-plate wood materials technical field The invention relates to a fast measuring device and a measuring method for the mechanical properties of thin-plate wood materials, which belong to the field of testing and detection of the mechanical properties of materials. Background technique The veneer wood material refers to fiberboard, particleboard, wood-fiberplastic, artificial veneer, and pulp molded products with a thickness of 1-5mm. At present, the amount of application is huge, and the main uses include: building materials, such as the basic components of 3D light structure engineering wood material panels (3DEngineered Composites), glulam panels for structures, etc.; decoration materials, such as non-load-bearing partition panels, wall panels, Roof boards, inner walls of carriages, floors, backing boards for floor coverings, etc.; packaging materials, such as container boards, various packing box boa...

AI Technical Summary

Problems solved by technology

For thin-plate wood materials, simply supported beam support vibration method cannot be used, because the measured object is too light to maintain good contact with the support during the vibration process, so that the necessary vibration signal cannot be obtained

At the same time, the vibration frequency is also very difficult to measure, because in order to maintain contact with the support, the amplitude of the measured object must be very small

The stress wave method is also difficult to be used for the rapid measurement of the mechanical properties of such materials because the sensor is not easy to fix.

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