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Comparison of Non-Destructive Methods Based on Natural Frequency for Determining the Modulus of Elasticity of Cupressus lusitanica and Populus x canadensis

Bioresources, 2017-01, Vol.12 (1), p.270-282 [Peer Reviewed Journal]

ISSN: 1930-2126 ;EISSN: 1930-2126 ;DOI: 10.15376/biores.12.1.270-282

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  • Title:
    Comparison of Non-Destructive Methods Based on Natural Frequency for Determining the Modulus of Elasticity of Cupressus lusitanica and Populus x canadensis
  • Author: Hodoušek, Matěj ; Dias, Alfredo Manuel Pereira Geraldes ; Martins, Carlos ; Marques, André ; Böhm, Martin
  • Subjects: Non-destructive testing; Dynamic MOE; Cupressus lusitanica; Populus x canad
  • Is Part Of: Bioresources, 2017-01, Vol.12 (1), p.270-282
  • Description: A non-destructive method for measurement of the modulus of elasticity (MOE) was compared with the static method on beams of Cupressus lusitanica and Populus x canadensis. The dynamic method is based on the principle of the resonance frequency, using longitudinal vibrations (Timber Grader MTG, accelerometer) and the static method for measurement of the flexural modulus of elasticity is according to EN 408 (2012). The differences between the ascertained dynamic and static MOE values were 1.1% to 2.4% for the Populus x canadensis sample and 12.7% to 15.5% for the Cupressus lusitanica sample. Furthermore, the correlation dependence of the applied methods was determined and the regression equations are shown. Experimental measurement showed the effect of the knot clusters, which appeared primarily in Cupressus lusitanica samples and considerably impacted the resultant values.
  • Publisher: North Carolina State University
  • Language: English
  • Identifier: ISSN: 1930-2126
    EISSN: 1930-2126
    DOI: 10.15376/biores.12.1.270-282
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    DOAJ: Directory of Open Access Journals
    ROAD: Directory of Open Access Scholarly Resources
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