The Impact of Radiant Heat on the Flexural Strength and Impact Strength in Spruce Wood Bending

  • Anton OsvaldEmail author
  • Jaroslava Štefková
Conference paper


Thermal degradation influences the wood in a complex way; i.e. it causes the alteration of its properties (weight, volume, shape, and color), as well as the changes of mechanical properties. The main aim of this work is to compare the changes of selected mechanical properties in dependence on the detected weight loss and compare the size of the radiation source. The aim of the research was to examine the changes of strength in bending and impact strength in bending of spruce wood under the influence of radiant heat of S1 source with 1000 W and S2 source of 2000 W outputs. The position of the sample towards the heat source was also observed, in particular, in 50 mm, 100 mm and 150 mm distance. The mass loss measured as the difference of weights before and after the test expressed in per cents was an additional evaluation criterion. The results confirm that the radiant heat, as well as the distance, have an influence on the measured parameters.


Spruce wood Thermal loading Flexural strength Impact strength 


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.ZvolenSlovakia
  2. 2.The Institute of Foreign LanguagesTechnical University in ZvolenZvolenSlovakia

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