Table 3 Average nominal moduli of elasticity E determined for varying RH levels in three weave directions for the entire set of glue-sized canvases analysed

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

Weave direction

Average E ± std. dev

30% RH

50% RH

75% RH

90% RH

weft

470 ± 160

550 ± 240

430 ± 220

120 ± 20

warp

200 ± 120

160 ± 86

110 ± 64

30 ± 19

bias

180 ± 64

180 ± 80

110 ± 77

13 ± 22

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