Question

With reference to KES-FB and FAST systems, the same low stress mechanical property is measured by

• A. KES-FB1 and FAST 1
• B. KES-FB2 and FAST 2
• C. KES-FB3 and FAST 1
• D. KES-FB2 and FAST 3

Hint:

The KES-FB system is more detailed, while FAST is simpler and faster. Learning to map equivalent parameters is essential for fabric testing in industry.

Answer 1

The Correct Option is B, C

The Kawabata Evaluation System for Fabrics (KES-FB) and the Fabric Assurance by Simple Testing (FAST) system both measure low-stress mechanical properties of fabrics but categorize them differently. Matching parameters helps identify which properties are equivalent:
Step 1: KES-FB2 vs FAST 2 (B).
KES-FB2 measures bending rigidity and hysteresis, while FAST 2 also measures bending rigidity of fabrics. Thus, both assess the same property.
Step 2: KES-FB3 vs FAST 1 (C).
KES-FB3 measures surface properties such as friction and roughness. FAST 1 measures fabric extension under low stress, which is related to shear and extension. These are considered equivalent assessments under fabric handle evaluation.
Step 3: Other options.
KES-FB1 vs FAST 1 (A) and KES-FB2 vs FAST 3 (D) do not measure the same property, hence are incorrect.
Correct inference: The same property is measured by (B) KES-FB2 and FAST 2, and (C) KES-FB3 and FAST 1.