θ/˚

0

15

30

45

60

75

90

0 MPa

0.1

0.1

1.8

91.9

93.3

60.1

0.4

10 MPa

0.0

0.1

1.0

74.1

77.3

43.8

0.8

20 MPa

0.1

0.3

1.0

62.6

66.8

34.3

0.1

30 MPa

0.0

0.1

0.6

54.1

59.6

28.1

0.3

45 MPa

0.1

0.1

0.1

45.5

51.5

22.6

0.1

60 MPa

0.0

0.0

0.2

39.6

46.9

18.8

0.0