Issue 55

F. A. Elshazly et al, Frattura ed Integrità Strutturale, 55 (2021) 1-19; DOI: 10.3221/IGF-ESIS.55.01

Strengthening ௨ሺிாሻ (KN) NT NL

 ௨ሺிாሻ DI

t [mm]

Rubber %

D/t

Specimen

Deficiency

type

RU5-T2.5

2.5 2.5 2.5

50 50 50 42 42 42 36 36 36 32 32 32 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 42 42 42 36 36 36 32 32 32 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%

-- T L -- T L -- T L -- T L T T T T T T T T T T L L L L L L L L L L -- T L -- T L -- T L -- T L T T T T T T T T T T L L L L L L L L L L

-- -- -- -- -- -- -- -- -- -- -- --

-- -- -- -- -- -- -- -- -- -- -- --

-- -- -- -- -- -- -- -- -- -- -- -- -- 1 -- 1 -- -- 1 -- 1 -- -- 1 -- 1 -- -- 1 -- 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1 -- 1 -- -- 1 -- 1 -- -- 1 -- 1 -- -- 1 -- 1 --

887 870 875 942

7.1

5

RU5-HL-T2.5 RU5-VL-T2.5 RU5-HL-T3 RU5-VL-T3 RU5-T3.5 RU5-HL-T3.5 RU5-VL-T3.5 RU5-T3

7

7.1

6.95

7.73

3 3 3

7.1

5

907.5

6.35 7.15 6.15 7.15 6.45 7.35 11.1 11.1 11.1 10.3 6.95 7.1 7.1 7.5

6.68 8.36 6.47 7.94 6.52 8.36 10.7 5 5

930

3.5 3.5 3.5

998.5 945.3

982

RU5-T4

4 4 4

1069.5 996 1037 983.8 1066.2 1118.7 1163.3 1192 1113.9 1183 1281 1363.2 1449 1066.6 1084.8 1113.9 1093.7 1168.1 1112.1 1225.3 1197.3 971 988

RU5-HL-T4 RU5-VL-T4 RU5-HL-G1T RU5-HL-G1T1L RU5-HL-G2T RU5-HL-G2T1L RU5-HL-G3T RU5-HL-C1T RU5-HL-C1T1L RU5-HL-C2T RU5-HL-C2T1L RU5-HL-C3T RU5-VL-G1T RU5-VL-G1T1L RU5-VL-G2T RU5-VL-G2T1L RU5-VL-G3T RU5-VL-C1T RU5-VL-C1T1L RU5-VL-C2T RU5-VL-C2T1L RU5-VL-C3T RU15-T2.5 RU15-HL-T2.5 RU15-VL-T2.5 RU15-HL-T3 RU15-VL-T3 RU15-T3.5 RU15-HL-T3.5 RU15-VL-T3.5 RU15-HL-T4 RU15-VL-T4 RU15-HL-G1T RU15-HL-G1T1L RU15-HL-G2T RU15-HL-G2T1L RU15-HL-G3T RU15-HL-C1T RU15-HL-C1T1L RU15-HL-C2T RU15-HL-C2T1L RU15-HL-C3T RU15-VL-G1T RU15-VL-G1T1L RU15-VL-G2T RU15-VL-G2T1L RU15-VL-G3T RU15-VL-C1T RU15-VL-C1T1L RU15-VL-C2T RU15-VL-C2T1L RU15-VL-C3T RU15-T3 RU15-T4

2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 3 3 3 3.5 3.5 3.5 4 4 4

GFRP

1

GFRP 1

15.85

GFRP GFRP

2 2

16

15.85 14.71 9.92 10.71 9.57 10.14 10.09 10.44 13.57 12.43 11.5 10.33 5.26 7.13 5.26 9 9

GFRP 3

CFRP

1

CFRP 1

7.5 6.7 7.1 6.7 9.8 7.1 9.5 8.7 8.3

CFRP CFRP GFRP GFRP

2 2 1 1

CFRP 3

GFRP 2

GFRP

2

GFRP 3

CFRP CFRP CFRP CFRP

1 1 2 3

5.35 7.75 3.95 5.35 3.95

CFRP 2

15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15% 15%

-- -- -- -- -- -- -- -- -- -- -- --

-- -- -- -- -- -- -- -- -- -- -- -- 1

824 816

7.5 6.5

6.8 7.2

827.8 895.3 857.4 883.2 948.2

7.15

7.78

7.5

6.8

6.35

6.77 8.47 6.58 8.18 6.8

7.3 7.1

895

6.15 7.55 6.45 7.65 7.1

937.5 1021.5

6.8

949

6.64 8.47 12.43 15.95 16.43 15.95 14.87 10.2 11.3

988.4

GFRP

927 995

8.7 11

GFRP 1

GFRP

2

1055.3 1092.1 1113.1 1026.4 1125.9 1211.2 1343 1448 900.2 937.8 1017 1035 1064 1009 1117.5 1057.4 1155.1 1061.5

11.4 11.4

GFRP 2

GFRP CFRP

3 1

10

6.35

CFRP 1

7.9 6.7 7.9 6.7 7.1 9.5 8.7 8.3

CFRP

2

9.9

CFRP 2

10.9

CFRP GFRP GFRP GFRP

3 1 2 2

9.6 8.2

6.15

GFRP 1

10.7 13.8 12.8

GFRP 3

12

CFRP

1

5.55 7.75 3.55

8.25

CFRP 1

11 5.4

CFRP CFRP

2 2

5.1

7.24

CFRP 3 4.22 T: Transversal; NT: No. of layers in transverse direction; L: Longitudinal; NL: No. of layers in longitudinal direction Table 4: Specimens details and results for the parametric study. 2.95

12

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