Issue 54

B. Bartolucci et alii, Frattura ed Integrità Strutturale, 54 (2020) 249-274; DOI: 10.3221/IGF-ESIS.54.18

Paper

Tab.

ID

10

4a

9

8

7

4

3

2

1

Pine

Spruce

Softwood

RH (%)

Spruce

Spruce

Spruce

Spruce

Spruce

Pine

Pine

Pine

Fir

MC

(%)

Site I

18%

12%

Site

Sat.

7%

4%

II

(kg/m³)

345±95

288±63

488±38

479±40 -

Density

275

365

328

590

-

280.5

249.5

98%

409.6

385.1

80%

164.2

490

RL

-

413.7

65%

465

Fracture Toughness - K IC (kPa · m ⁰⸱⁵ )

435.5

494.1

30%

575±115

580±110

580±110

585±105

590±90

118.8

310

TL

-

-

-

-

-

RT LR LT

185.3

204.2

98%

-

-

-

281.3

290.3

80%

TR

364.2

328.7

65%

348.8

352.5

30%

12750±884

13810±665

12800

11900

12900

15500

15600

16500

10000

10300

E L

MOE (MPa)

5554±288

5713±544

-

-

-

-

817.4

1030

625

550

970

800

690

E R

-

397 0.45 0.36 0.21

420 0.41

450

410

E T

-

0.16

0.18

0.26

0.27

0.29

LT

0.4

Poisson's

-

ratio

0.55

0.04

0.08

0.13

0.13

0.16

LR RT

0.4

-

-

-

-

-

-

-

257