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230<br />

Tabela 7.5 – Cálculo do módulo <strong>de</strong> elastici<strong>da</strong><strong>de</strong> dinâmico <strong>da</strong>s <strong>toras</strong>.<br />

L<br />

(m)<br />

D<strong>meio</strong> (m)<br />

Massa<br />

(kg) 1 o pico 2 o Tora<br />

f (Hz)<br />

pico Média<br />

EM,VT,u% (GPa)<br />

f média f maior pico<br />

EM,VT,12% (GPa)<br />

f média f maior pico<br />

1 4,10 0,172 95,8 44,72 44,72 24,95 24,95 28,94 28,94<br />

2 4,26 0,173 104,40 39,07 42,30 40,69 24,57 26,55 28,50 30,80<br />

3 4,17 0,186 118,45 45,58 45,58 25,03 25,03 29,04 29,04<br />

4 4,30 0,179 122,80 35,47 35,47 19,75 19,75 22,91 22,91<br />

5 4,12 0,159 75,80 40,41 40,41 22,35 22,35 25,92 25,93<br />

6 4,12 0,181 108,80 46,30 47,88 47,09 25,98 26,85 30,13 31,15<br />

7 4,28 0,164 90,60 39,14 39,14 24,86 24,86 28,83 28,84<br />

8 4,12 0,169 93,60 43,34 43,34 25,15 25,14 29,17 29,16<br />

9 4,28 0,158 87,55 35,38 39,06 37,22 25,06 27,60 29,07 32,02<br />

10 3,97 0,175 97,35 45,61 47,64 46,62 23,51 22,51 27,28 26,11<br />

11 4,10 0,200 118,80 44,81 46,67 45,74 18,22 18,97 21,13 22,00<br />

12 4,03 0,185 115,60 46,49 46,49 23,15 23,35 26,85 27,08<br />

13 4,09 0,164 87,20 38,38 42,28 40,33 22,33 24,55 25,91 28,48<br />

14 4,38 0,166 96,45 34,28 34,28 20,96 20,95 24,31 24,31<br />

15 4,05 0,156 81,65 39,96 42,21 41,09 25,74 24,35 29,74 28,13<br />

16 4,02 0,158 66,85 38,91 44,28 41,60 19,80 17,33 22,97 20,10<br />

17 4,09 0,178 101,65 43,30 47,98 45,64 24,19 21,78 28,06 25,26<br />

18 4,13 0,173 95,50 40,66 42,61 41,63 21,71 20,70 25,18 24,02<br />

19 4,26 0,151 78,30 34,74 37,78 36,26 25,29 23,21 29,33 26,92<br />

20 4,12 0,154 80,55 40,22 42,25 41,24 27,85 26,49 32,30 30,73<br />

21 4,09 0,154 75,40 38,10 40,89 39,49 23,33 25,01 27,07 29,01<br />

22 4,16 0,137 60,35 31,67 31,67 20,30 20,30 23,55 23,54<br />

23 3,97 0,140 63,60 37,94 37,94 24,81 24,80 28,78 28,77<br />

24 4,05 0,165 85,70 41,49 43,98 42,74 23,40 22,05 27,14 25,58<br />

25 4,00 0,142 64,00 38,47 40,11 39,29 25,53 26,60 29,61 30,86<br />

26 4,26 0,181 110,30 37,23 37,23 18,49 18,49 21,45 21,44<br />

27 4,24 0,165 92,25 38,81 38,81 23,59 23,60 27,37 27,37<br />

28 4,18 0,136 64,35 33,32 33,32 25,06 25,07 29,07 29,08<br />

29 4,01 0,183 101,40 47,70 47,70 22,13 22,12 25,67 25,66<br />

30 4,25 0,167 76,35 36,09 36,09 16,05 18,80 18,62 21,81<br />

31 4,31 0,157 82,90 43,45 43,45 34,10 33,95 39,56 39,38<br />

32 4,41 0,177 118,85 39,56 40,64 40,10 27,48 26,75 31,88 31,02<br />

33 4,13 0,165 85,40 37,70 37,70 19,10 19,11 22,16 22,17<br />

34 4,09 0,156 84,95 38,71 38,71 24,32 24,32 28,21 28,21<br />

35 4,05 0,184 109,95 49,92 52,41 51,16 27,89 29,27 32,36 33,95<br />

36 4,00 0,140 61,70 36,23 39,90 38,07 24,69 27,13 28,65 31,47<br />

37 4,24 0,177 112,15 35,25 35,25 18,16 18,16 21,06 21,06<br />

38 4,06 0,166 94,90 41,78 41,78 24,39 24,40 28,30 28,30<br />

39 4,00 0,143 64,20 37,91 41,09 39,50 25,37 23,37 29,43 27,11<br />

40 4,31 0,157 82,90 36,75 36,75 24,40 24,40 28,31 28,30<br />

7.3.3. Ensaio <strong>de</strong> <strong>flexão</strong> estática<br />

A Tabela 7.6 mostra o módulo <strong>de</strong> elastici<strong>da</strong><strong>de</strong> estático e o módulo <strong>de</strong> ruptura <strong>da</strong>s <strong>toras</strong><br />

para o teor <strong>de</strong> umi<strong>da</strong><strong>de</strong> do ensaio e para o teor <strong>de</strong> umi<strong>da</strong><strong>de</strong> <strong>de</strong> 12% conforme NBR 7190<br />

(ABNT, 1997).

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