Issue 47

J. P. Manaia et alii, Frattura ed Integrità Strutturale, 47 (2019) 82-103; DOI: 10.3221/IGF-ESIS.47.08

PA 6 is already in its glass temperature state, although possible increase of internal material temperature due to deformation there is no change of state.

(1)

(2)

(3)

HDPE | RT and 50°C | Angle 90 ° |  Testing Speeds 0 to 200 (mm/min) 

HDPE | RT and 50°C | Angle 30 ° |  Testing Speeds 1 to 200 (mm/min) 

HDPE | RT and 50°C | Angle 0 ° |  Testing Speeds 1 to 200 (mm/min) 

900

900

900

HDPE_RT_Angle 0°_T. Speed 200 HDPE_RT_Angle 0°_T. Speed 20 HDPE_RT_Angle 0°_T. Speed 1 HDPE_50°C_Angle 0°_T. Speed 200 HDPE_50°C_Angle 0°_T. Speed 1

HDPE_RT_Angle 30°_T. Speed 200 HDPE_RT_Angle 30°_T. Speed 20 HDPE_RT_Angle 30°_T. Speed 1 HDPE_50°C_Angle 30°_T. Speed 200 HDPE_50°C_Angle 30°_T. Speed 1

800

800

800

700

700

700

600

600

600

500

500

500

HDPE

400

400

400

Load, F (N)

Load, F (N)

Load, F (N)

300

300

300

200

200

200

HDPE_RT_Angle 90°_T. Speed 200 HDPE_RT_Angle 90°_T. Speed 20 HDPE_RT_Angle 90°_T. Speed 1 HDPE_50°C_Angle 90°_T. Speed 200 HDPE_50°C_Angle 90°_T. Speed 1

100

100

100

0

0

0

0

4

8

12

16

0

4

8

12

16

0

4

8

12

16

Displacement ,   V

[mm]

Displacement ,   V [mm]

Displacement ,   V [mm]

(5)

(6)

(4)

PP | RT and 50°C | Angle 90 ° |  Testing Speeds 0 to 200 (mm/min) 

PP | RT and 50°C | Angle 30 ° |  Testing Speeds 0 to 200 (mm/min) 

PP | RT and 50°C | Angle 0 ° | Testing  Speeds 0 to 200 (mm/min) 

600

600

600

500

500

500

400

400

400

PP

300

300

300

Load, F (N)

Load, F (N)

Load, F (N)

200

200

200

PP_RT_Angle 0°_T. Speed 200 PP_RT_Angle 0°_T. Speed 20 PP_RT_Angle 0°_T. Speed 1 PP_50°C_Angle 0°_T. Speed 200 PP_50°C_Angle 0°_T. Speed 1

PP_RT_Angle 30°_T.Speed 200 PP_RT_Angle 30°_T.Speed 20 PP_RT_Angle 30°_T.Speed 1 PP_50°C_Angle 30°_T. Speed 200 PP_50°C_Angle 30°_T. Speed 1

PP_RT_Angle 90°_T. Speed 200 PP_RT_Angle 90°_T. Speed 20 PP_RT_Angle 90°_T. Speed 1 PP_50°C_Angle 90°_T. Speed 200 PP_50°C_Angle 90°_T. Speed 1

100

100

100

0

0

0

0

3

6

9 12 15 18

0

3

6

9 12 15 18

0

3

6

9 12 15 18

Displacement ,   V

[mm]

Displacement ,   V

[mm]

Displacement ,   V

[mm]

(9)

(7)

(8)

PA 6 | RT and 50°C | Angle 90 ° |  Testing Speeds 0 to 200 (mm/min) 

PA 6 | RT and 50°C | Angle 30 ° |  Testing Speeds 0 to 200 (mm/min) 

PA 6 | RT and 50°C | Angle 0 ° |  Testing Speeds 0 to 200 (mm/min) 

1800

1800

1800

1600

1600

1600

1400

1400

1400

1200

1200

1200

1000

1000

1000

PA 6

800

800

800

Load, F (N)

Load, F (N)

Load, F (N)

600

600

600

400

400

400

8 12 16 20 24 PA 6_RT_Angle 0°_T. Speed 200 PA 6_RT_Angle 0°_T. Speed 20 PA 6_RT_Angle 0°_T. Speed 1 PA 6_50°C_Angle 0°_T. Speed 200 PA 6_50°C_Angle 0°_T. Speed 1

8 12 16 20 24 PA 6_RT_Angle 30°_T. Speed 200 PA 6_RT_Angle 30°_T. Speed 20 PA 6_RT_Angle 30°_T. Speed 1 PA 6_50°C_Angle 30°_T. Speed 200 PA 6_50°C_Angle 30°_T. Speed 1

8 12 16 20 24 PA 6_RT_Angle 90°_T. Speed 200 PA 6_RT_Angle 90°_T. Speed 20 PA 6_RT_Angle 90°_T. Speed 1 PA 6_50°C_Angle 90°_T. Speed 200 PA 6_50°C_Angle 90°_T. Speed 1

200

200

200

0

0

0

0

4

0

4

0

4

Displacement ,   V

[mm]

Displacement ,   V

[mm]

Displacement ,   V [mm]

Figure 7 : Load-displacement curves for HDPE, PP and PA 6 resulting from combined tension/shear loading at RT and 50 °C: influence of crosshead speeds for each loading angle.

90