Question

The parameter(s) required to convert load-elongation curve to stress-strain curve of a yarn is/are:

• A. initial linear density of yarn
• B. linear density of yarn at break
• C. gauge length of yarn
• D. length of yarn at break

Hint:

To convert the load-elongation curve into a stress-strain curve, the initial linear density of yarn and gauge length are essential parameters.

Answer 1

The Correct Option is A, C

Step 1: Understanding the relationship between load-elongation and stress-strain. 
The load-elongation curve provides the force applied to the yarn and the corresponding elongation, while the stress-strain curve relates this force to the material's stress and strain. 
Step 2: Conversion factors. 
To convert the load-elongation curve to the stress-strain curve, we need to know the cross-sectional area of the yarn and its initial length.
The initial linear density of the yarn is crucial as it provides the mass per unit length, which is necessary to calculate stress (force per unit area).
The gauge length of the yarn is necessary for calculating strain (relative elongation per unit length). 
Step 3: Conclusion. 
Therefore, the parameters required are the initial linear density of the yarn and the gauge length of the yarn, which correspond to options (A) and (C).