Table 2 Coupled strength of the fissured specimens under varied coupled static-dynamic strain rates.

From: Dynamic fracture mechanism and fragment characteristics of sandstone specimens with asymmetrical conjugate fissures under static pre-compression

Notation

Static pre-stress (MPa)

Strain rate (s−1)

Coupled strength (MPa)

0.2-D1

10.4

63.2

89.1

0.2-D2

10.4

73.4

91.7

0.2-D3

10.4

77.1

95.4

0.2-D4

10.4

91.8

98.9

0.2-D5

10.4

132.9

114.8

0.4-D1

20.9

27.0

76.6

0.4-D2

20.9

63.0

96.5

0.4-D3

20.9

98.8

107.0

0.4-D4

20.9

103.8

110.5

0.4-D5

20.9

126.6

117.2

0.6-D1

31.3

28.9

81.1

0.6-D2

31.3

71.8

106.4

0.6-D3

31.3

101.3

112.0

0.6-D4

31.3

113.5

117.1

0.6-D5

31.3

120.7

122.7

0.8-D1

41.8

60.2

93.1

0.8-D2

41.8

77.9

97.8

0.8-D3

41.8

100.5

107.3

0.8-D4

41.8

116.8

112.2

0.8-D5

41.8

128.8

117.9