Rapid prediction technology for wood properties

I. Technical Overview

Rapid prediction technology for wood properties is a model analysis technique that integrates near-infrared spectroscopy with X-ray technology and other conventional analysis techniques. This technique can accurately and quickly predict the density, microfibril angle, and elastic modulus of plantation timber. It is of great significance for early prediction of plantation timber properties, targeted cultivation, expansion of plantation timber utilization, and improvement of the rational processing and utilization of plantation timber resources.

This technology integrates near-infrared spectroscopy, X-ray diffraction, and other non-destructive testing techniques with conventional wood physical and mechanical testing techniques for model building and analysis. Compared with traditional wood property testing methods, it can rapidly predict the physical and mechanical properties of wood. Applying this technology, models were built and predicted using a combination of two techniques for different wood property indicators or different wood sections with the same indicator in plantation timber in my country. A comprehensive and systematic rapid prediction model for the wood properties of eucalyptus wood from plantations was established. This achievement can provide technical support for the breeding, rapid prediction of wood property indicators, and processing and utilization of eucalyptus trees in plantations in my country.

II. Technical Features

The key to this technology is to select representative test materials, prepare samples and molds, perform near-infrared spectroscopy scanning, test wood properties, and finally establish a predictive model. The key technologies are: (1) According to different sample shapes, a self-designed translation stage is used to achieve rapid and stable acquisition of near-infrared spectra of wood samples of different sizes; (2) A database of basic properties and near-infrared spectra of plantation wood in my country has been established; (3) Using chemometric methods, analytical models for properties such as wood microfibril angle, density, bending modulus of elasticity, and bending strength have been established.

III. Market Prospects

This achievement provides important methodological and technical support for the future selection and breeding of plantation tree species and the rational processing and utilization of timber resources in China. It can also promote the rapid development of local forestry and forest product processing industries, thereby driving local economic development, increasing the income of forest farmers, and having certain economic and social benefits.