Non - destructive testing of wood structures by X -rays

Abstract

This work examines the possibility of detecting the waek points of wood structure assembly by non-destructive methods and restoring it, in a timely manner, before it comes to visible damaging. This is purpose of using X-ray examination for the sample of three types of wood: ring-porous deciduous, diffuse porous deciduous and conifers. The hypothesis was that the permeability of wood to X-ray radiation was inversely proportional to the coefficient of static resistance of wood. The mechanical properties of wood sample used in this work are approximates of their table values of coefficient of static bending stress expressed in MPs. In proving these hypotheses, X-ray machine was used, with a range of work from 40-125 kV and 0.50=360 m A/s, the same as its usage in humane medicine. This work showed that by X-rays we could successfully establish quality properties of certain types of wood and by that its best usage, which is, for example, of special interest for restoration and reconstruction of objects of cultural and historical value. Non-destructive methods of testing wood structure assembly certainly justify their role in that field and they require further research and development.