Question

Crimp interchange is a phenomena associated with

• A. Bursting Strength
• B. Abrasion Resistance
• C. Tensile Strength
• D. Tear Strength

Hint:

Crimp interchange is most directly related to tear strength in woven fabrics. The ability of warp and weft yarns to exchange crimp helps redistribute the load during tearing.

Answer 1

The Correct Option is D

Step 1: Understanding Crimp Interchange: Crimp interchange is a phenomenon that occurs in woven fabrics where the warp and weft yarns exchange their crimp (waviness) under tension. When a woven fabric is subjected to a force, one set of yarns (either warp or weft) tends to straighten while the other set becomes more crimped. 
Step 2: Relevance to Tear Strength: Tear strength is the force required to propagate a tear in a fabric. Crimp interchange plays a significant role in tear strength, especially in woven fabrics. As a tear propagates, the yarns perpendicular to the tear direction must be pulled out or broken. If the yarns can easily interchange crimp, they can redistribute the load, making it more difficult to tear the fabric. A fabric with good crimp interchange will generally have higher tear strength. 
Step 3: Eliminating Other Options 
 Bursting Strength is more related to overall fabric strength. 
 Abrasion resistance is more related to the fibre properties and surface finishing. 
 Tensile strength is related to breaking strength and not directly to crimp interchange.