Rapid on-line detecting method and system for wood material strength

Abstract

The invention discloses an online fast detection system of strength performance of wood and wooden composite materials, comprising a transporting mechanism, a laser sensor, a beater, a signal pickup device and a computer, wherein the laser sensor is used for online detecting the position of the detected object and determining the beating time to center according to the transporting speed and the sectional dimension of the detected object; the beater is used for beating the central area of the end of the detected part according to beating time instructions of the laser sensor; the signal pickup device is used for receiving the mechanical wave signals generated by the detected object; and the computer is used for receiving detection data of the signal pickup device. The invention also provides an online fast detection method for strength performance of wood and wooden composite materials. The invention adopts the laser sensor and an electromagnetic vibrator, has more accurate positioning and beating and low fault rate of equipment operation, can effectively beat the central area of the end surface of the detected object and does not cause the problems of beating leakage and beating error and the like.

Description

technical field [0001] The invention relates to a method and system for rapid detection of online strength properties of wood and wood composite materials. Background technique [0002] The quality inspection of wood and wood composite materials is the key to ensure the quality of subsequent products and their rational use. The current detection method is single, and a certain sample is usually selected by manual sampling for visual inspection and destructive detection. Such a detection method has many defects and shortcomings: [0003] 1. Visual inspection mainly relies on the judgment of human experience, so the requirements for operators are high and there are large human errors; [0004] 2. Materials lose their original application value after destructive testing, resulting in waste of materials; [0005] 3. The detection process requires strict requirements on the shape, size and moisture content of the object to be inspected; [0006] 4. The technical analysis is c...

AI Technical Summary

Problems solved by technology

[0003] 1. Visual inspection mainly relies on the judgment of human experience, so the requirements for operators are high and there are large human errors;

[0004] 2. Materials lose their original application value after destructive testing, resulting in waste of materials;

[0005] 3. The detection process requires strict requirements on the shape, size and moisture content of the object to be inspected;

[0006] 4. The technical analysis is complex, and it is necessary to consider the impact of wood creep and shear effects on the strength performance test results;

[0007] 5. The test cycle is long, time-consuming and labor-intensive, and it cannot be tested on-site, and the results can be obtained on-site;

[0008] 6. Obtaining test data in the form of partial loading can only reflect the performance of a certain part of the material, but cannot fully reflect the overall performance of the material

[0009] These problems in the traditional way are not in line with the future development trend of the timber industry and the requirements of factory operation

Images