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THE CHOICE BETWEEN TEXTILES AND TAPE LAMINATES
3-7
Failure Stress (MPa)
Tape
Fabric
(0.84)
(0.85)
(0.77)
(0.93)
(0.99)
(1.14)
(0.94)
(0.76)
(0.81)
(Ratio Fabric/Tape)
0
100
200
300
400
500
600
700
800
[0/90]ns
[3.4]
[0/90]ns
2 mm thick
[3.4]
[0/90]ns
1 mm thick
[3.4]
[45/-45]ns
[3.5]
[45/-45]ns
2mm thick
[3.4]
[45/-45]ns
1mm thick
[3.4]
[0/90±45]s
[3.5]
[±45/0/90]s
[3.5]
[0/90/±45]s
[3.4]
a) Unnotched
Net Failure Stress (MPa)
0
100
200
300
400
500
600
[0/90]ns
dia.= 4 mm
[3.5]
[0/90]ns
dia.=10 mm
[3.4]
[45/-45]ns
dia.=4 mm
[3.5]
[45/-45]ns
dia.=10 mm
[3.4]
[±45/0/90]s
dia.=4mm
[3.5]
[0/90/±45]s
dia.=4 mm
[3.5]
[0/90/±45]s
dia.=10 mm
[3.4]
(0.67)
(0.70)
(1.04)
(0.86)
(0.94)
(0.81)
(0.85)
(Ratio Fabric/Tape)
Tape
Fabric
b) Notched
Figure 3-2. Comparison of (a) unnotched and (b) notched tensile strengths of 5-harness
satin weave laminate and equivalent tape laminate. Material 1: Gr/MY720 epoxy.
Material 2: T300/Ciba Geigy BSL914C. Notched strengths are from open hole tension
tests, with hole diameters as shown.