Step 1: Learn about the Kawabata Evaluation System (KES-FB). This system uses standardized instruments to measure the low-stress mechanical properties of fabrics that relate to the subjective "hand" feeling (e.g., softness, stiffness, smoothness). The system uses four main instruments.
Step 2: Determine the properties measured by each instrument.
- KES-FB1 (Tensile and Shear Tester): Measures fabric stretching and shearing. This includes tensile strain, linearity of the load-elongation curve (A), and tensile energy (C).- KES-FB2 (Pure Bending Tester): Measures a fabric's resistance to bending, providing bending rigidity or stiffness (D).- KES-FB3 (Compression Tester): Measures fabric compression properties. This includes thickness, compressibility, and compression resilience (B).- KES-FB4 (Surface Tester): Measures surface friction and roughness.
Step 3: Evaluate the properties. All four listed properties (A, B, C, and D) are standard parameters measured by the KES-FB system's modules, therefore all are correct.
Match Fibre with Application.\[\begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \textbf{Fibre} & \textbf{Application} \\ \hline \hline \text{A. Silk fibre} & \text{I. Fire retardant} \\ \hline \text{B. Wool fibre} & \text{II. Directional lustre} \\ \hline \text{C. Nomex fibre} & \text{III. Bulletproof} \\ \hline \text{D. Kevlar fibre} & \text{IV. Thermal insulation} \\ \hline \end{array}\]
The strength of fiber is usually measured in bundle form because there is better correlation between fiber bundle strength and \(\underline{\hspace{2cm}}\)