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Table 2 Mechanical properties of Vasa oak[23]

From: Strategy for developing a future support system for the Vasawarship and evaluating its mechanical properties

Source Position Parameter Average Standard deviation No. of samples Note
STRENGTH [σ]   [σ] [MPa] [MPa] [−]  
Tensile strength in longitudinal (L) direction
Bjurhager et al. [28]   σL,tensile 47.4 12.7 175 u = 7.8 (0.5)%, PEG content 11.7 (17.3)%
Bjurhager et al. [8]   σL,tensile 37.6 15.7 126  
Bjurhager et al. [8]   σL,tensile 59.9 24.6 121  
Bjurhager et al. [8]   σL,tensile 44.1 25.5 91  
Compression strength in longitudinal (L) direction
Thunell [24]   σL,compr. 17.0 - 10 Measured in watersat. cond (u = 132%), no PEG
Ljungdahl [9]   σL,compr. 39.7 - - u = 7%, PEG content unknown
Ljungdahl [9]   σL,compr. 26.2 - - u = 8%, PEG content unknown
Compression strength in radial (R) direction
Ljungdahl and Berglund [29]   σR,compr. 8.5 1.0 7 u = 9.7 (0.9)%, PEG content 30.5 (3.0)%
Ljungdahl and Berglund [29] (centre) σR,compr. 12.9 3.7 10 u = 12.5 (1.3)%, PEG content 2.8 (3.4)%
Burman et al. [30] (centre) σR,compr. 6.0 2.3 5 u = 8.9 (1.8)%, PEG content unknown
Ljungdahl and Berglund [29] (surface) σR,compr. 11.6 4.9 10 u = 11.8 (0.6)%, PEG content 11.1 (12.1)%
Burman et al. [30] (surface) σR,compr. 5.8 3.9 5 u = 8.8 (1.9)%, PEG content unknown
Compression strength in tangential (T) direction
Ljungdahl [9]   σT,compr. 14.3 - - u = 7%, PEG content unknown
Ljungdahl [9]   σT,compr. 11.1 - - u = 8%, PEG content unknown
Ljungdahl and Berglund [29]   σT,compr. 5.6 1.0 7 u = 9.4 (0.3)%, PEG content 25.7 (2.6)%
   Modulus of rupture    
Thunell [24]   MOR 34.0 - 10 Measured in watersat. cond. (μ 132%)
STIFFNESS [MOE]   [E] [GPa] [GPa] [−]  
Compression and tensile MOE in radial (R), tangential (T) and longitudinal (L) direction
Bjurhager et al. [28]   EL,tensile 7.40 1.30 175 u = 7.8 (0.5)%, PEG content 11.7 (17.3)%
Ljungdahl [9]   EL,compr. 9.50 - - u = 7% (PEG content unknown)
Ljungdahl [9]   EL,compr. 5.60 - - u = 8% (PEG content unknown)
Ljungdahl and Berglund [29]   ER,compr. 0.95 0.09 7 u = 9.7 (0.9)%, PEG content 30.5 (3.0)%
Ljungdahl and Berglund [29] (centre) ER,compr. 1.29 0.40 10 u = 12.5 (1.3)%, PEG content 2.8 (3.4)%
Burman et al. [30] (centre) ER,compr. 0.80 0.40 5 u = 8.9 (1.8)%, PEG content unknown
Ljungdahl and Berglund [29] (surface) ER,compr. 1.10 0.39 10 u = 11.8 (0.6)%, PEG content 11.1 (12.1)%
Burman et al. [30] (surface) ER,compr. 0.70 0.50 5 u = 8.8 (1.9)%, PEG content unknown
Ljungdahl [9]   ET,compr. 1.10 - - u = 7%, PEG content unknown
Ljungdahl [9]   ET,compr. 1.10 - - u = 8%, PEG content unknown
Ljungdahl and Berglund [29]   ET,compr. 0.72 0.16 7 u = 9.4% (0.3), PEG content 25.7% (2.6)
  1. u – moisture content; (…) – standard deviation.