Application Areas » Other X-ray Applications » Wood X-ray Inspection

WOOD X-RAY INSPECTION

Self-adaptive cutting of wood for furniture production based on online, low-energy X-ray characterization

X-ray technology has been previously used for wood X-ray inspection, and process & product control of wood quality. Our new and innovative X-ray systems push the wood X-ray inspection level to the real need – to detect what is critical for process & product quality inspection.

X-ray inspection of wood – product & process control 2

THE VALUE OF LOW-ENERGY X-RAY TECHNOLOGY:

  • reducing loss and making best use of raw materials
  • better product classification and a better product price
  • avoiding customer complaints
  • a robust, reliable, and safe inspection technology
  • hygienic design guidelines

The tree plank inspection system is hence a high-speed, ultra-high image quality X-ray solution, which identifies defects (typically knots) in the product, and identifies the optimal cutting pattern for a given plank.

OBJECTIVE

The idea of developing a resource-saving and quality-optimizing cutting system for wood suppliers to the furniture industry stems from a concrete problem of the furniture producers. They have to achieve a cost-effective production while balancing between proud craftsman traditions, and the need for automation. However, automation is difficult, due to the raw material heterogeneity and that minimal quality deviance are essential parameters. Losses of valuable furniture wood as a result hereof have presently not been solved with automation, robot- or other modern production technology.

The objective is to combine high resolution, high contrast X-ray image information, that reflects the three-dimensional (3-D) internal structure, with profound knowledge of the importance for the production of critical defects.

The result is a self-adapting cutting system. This system provides the solution for the user as well as the supplier of the wood.

wood inspection xray
X-ray inspection of wood – product & process control 1

SOLUTION

The X-ray technological development is based on the worldwide unique low-energy X-ray technology that provides unrivaled contrast and resolution. Application-targeted development, involving multiple X-ray sources and detectors, were previously supplied by InnospeXion to other sectors, one of which was nominated for the Innovation award in 2010.

The X-ray technological basis of the system particularly concerns:

  1. The design, implementation, and testing of a novel geometric imaging method that – together with the positioning and speed (timing) information within the various images – can be used to characterize the spatial extent and location of irregularities in the plank.
  2. The optimization of the imaging speed with data collection at a rate of 1-3 ms pr. image, with GPU (Graphic Processor Unit) solutions.

The tree plank inspection system is hence a high-speed, ultra-high image quality X-ray solution, which identifies defects (typically knots) in the product, and identifies the optimal cutting pattern for a given plank.

The value is the minimization of waste, the focus on defect-free products, and the reduction on using expensive process and machining time on products (plank cut-outs) that have internal defects that prohibits their use for a given furniture part.

Typical resolution is 1-2 mm, with scan speed around 1 to 5 minutes per plank.

WOOD X-RAY INSPECTION
ADDITIONAL READING

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