A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hardness Test
Abstract The hardness of materials is commonly characterized using indentation techniques. The hardness values depend on the tool employed and the measured parameter, for wood, the anisotropy, heterogeneity and hygroscopicity also influence the measurements. In this chapter, different methods used for hardness testing of wood are presented. Possible correlations between the different hardness figures and other mechanical properties are indicated, in order to highlight the suitability of a specific technique for the assessment of structural timber on site. Limitations of each method are also discussed. A first group of testing methods is based on the static macroindentation, among them, the Janka, Brinell and Monnin hardness tests are standardized procedures, but they are not specifically designated to test structural timber for the estimation of mechanical properties correlated with hardness. The Piazza and Turrini hardness test, on the contrary, is conceived as a NDT method for the mechanical characterization of timber elements. Hardness tests of wood based on dynamic indentation, are briefly described: they are commonly used tomap decay in wood, rather than to estimate global mechanical properties of structural elements.
Hardness Test
Abstract The hardness of materials is commonly characterized using indentation techniques. The hardness values depend on the tool employed and the measured parameter, for wood, the anisotropy, heterogeneity and hygroscopicity also influence the measurements. In this chapter, different methods used for hardness testing of wood are presented. Possible correlations between the different hardness figures and other mechanical properties are indicated, in order to highlight the suitability of a specific technique for the assessment of structural timber on site. Limitations of each method are also discussed. A first group of testing methods is based on the static macroindentation, among them, the Janka, Brinell and Monnin hardness tests are standardized procedures, but they are not specifically designated to test structural timber for the estimation of mechanical properties correlated with hardness. The Piazza and Turrini hardness test, on the contrary, is conceived as a NDT method for the mechanical characterization of timber elements. Hardness tests of wood based on dynamic indentation, are briefly described: they are commonly used tomap decay in wood, rather than to estimate global mechanical properties of structural elements.
Hardness Test
Riggio, Mariapaola (author) / Piazza, Maurizio (author)
2010-01-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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