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In this issue

For parquet, stairs and other flooring, hardness is one of the most important wood properties to be considered; especially as regards to new wood-based materials, such as the different modified and composite materials used for flooring. In outdoor applications hardness is also an appropriate measure for indicating the wear characteristics of a material. However, testing the hardness of timber is complex, time consuming and usually restricted to laboratory testing. To overcome these difficulties, the work of Dr Linda Meyer aimed to develop a mobile testing device, which allows the application of dynamic loads in the test lab as well as on the construction site. Based on the Brinell principle the new instrument delivers relative momentum data, which can be easily converted into traditional Brinell hardness values. Extensive hardness tests with 24 different native wood species and thermally modified timber (TMT) were conducted, thus proving the reliability of this multi-functional device.