Method for evaluating physical and mechanical properties of wood based on micromorphological characteristics of wood

Abstract

The invention provides a method for evaluating physical and mechanical properties of wood based on microscopic morphological characteristics of wood, which is characterized by comprising the followingsteps: 1, sampling: selecting wood at the bottom end of a to-be-analyzed wood section; 2, testing: testing the micromorphological characteristics of the selected wood; 3, evaluation: establishing a regression model for the bending strength, the bending elasticity modulus and the tensile strength of the wood according to the tested data, and evaluating the parameters according to the regression model. The invention provides a method for evaluating the physical and mechanical properties of wood based on the micromorphological characteristics of wood wherein stepwise regression analysis is carried out by taking the bending strength, the bending elasticity modulus and the microsection tensile strength of China fir as dependent variables and microdissection indexes as independent variables, and a regression equation is established; therefore, the method can predict the bending strength, the bending elasticity modulus and the tensile strength of the cunninghamia lanceolata, provides a theoretical basis for reasonable processing and utilization of wood, directional cultivation of forest trees and the like, and has important significance for improving the utilization rate of the wood.

Description

technical field [0001] The invention relates to the technical field of wood physics, in particular to a method for evaluating wood physical and mechanical properties based on wood micro-morphological characteristics. Background technique [0002] As natural forests have plummeted, plantations have become the main raw material for the global timber industry. Planted forests are an important part of the world's forests and play an important role in ecological environment and economic construction and development. According to the "Results and Analysis of the Eighth Forest Resources Inventory in my country", the area of ​​artificial forests increased from 61.69 million hectares to 69.33 million hectares, an increase of 7.64 million hectares, accounting for 36% of the national forest land area; From 1.961 billion m3 to 2.483 billion m3, an increase of 522 million m3, and has maintained a continuous growth trend. The area of ​​planted forests in my country ranks first in the worl...

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Problems solved by technology

As my country's demand for wood products continues to increase, artificial forest fir will become the first choice for wood product raw materials. However, due to the short growth cycle of plantation wood under the traditional cultivation model, it results in low density, low strength, soft material, and large variability. And other problems seriously affect its scope of application, restricting the development of the wood industry

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