Table 4 Parameters in the Boltzmann sigmoid function obtained from the regression of the sets of E values determined for three weave directions for the entire set of the glue-sized canvases analysed

From: Mechanical properties and moisture-related dimensional change of canvas paintings–canvas and glue sizing

Weave direction

Boltzmann function parameters for groups of specimens

A1 (MPa)

A2 (MPa)

RH0 (%)

dRH

R-squared

weft

517

107

78.5

3.5

0.44

warp

175

15

78.5

3.5

0.39

bias

173

3

78.5

3.5

0.54

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