Question

The strength utilization of yarn in a woven fabric is

• A. $>1$
• B. $<1$
• C. Either A or B
• D. $=1$

Hint:

Yarn crimp and interlacement reduce the effective load-bearing capacity of yarns in fabrics.

Answer 1

The Correct Option is B

Step 1: Definition of strength utilization.
Strength utilization is defined as the ratio of fabric strength to the sum of the strengths of individual yarns used in the fabric.
Step 2: Effect of fabric structure.
In woven fabrics, yarns are crimped and interlaced, which prevents all yarns from bearing load simultaneously and uniformly.
Step 3: Practical implication.
Due to yarn crimp, friction, and uneven load sharing, the effective strength of yarns in fabric is less than their individual strength.
Step 4: Conclusion.
Therefore, the strength utilization of yarn in a woven fabric is always less than 1.