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Types of tensile strength testing instruments:
For CRL principle:
i. The Cambridge extensometer
ii. Scott inclined plane tester
iii. Kari’s instrument
iv. Pressley fiber strength tester
For CRE principal:
i. The Cambridge extensometer
ii. Inston tensile tester
iii. Pendulum lever machine
Tensile properties of different fibers:
Fiber | Tensile(N/Tex) | Breaking extension (%) |
---|---|---|
Cotton | 0.19-0.45 | 5.6-7.1 |
Jute | 0.31 | 1.8 |
Silk | 0.38 | 23.4 |
Nylon | 0.47 | 26 |
Polyester | 0.47 | 15 |
Wool | 0.11-0.14 | 29.8-42.9 |