Transverse tensile strength.

[RGClark]

How is tranverse tensile strength defined? How is it measured for thin fibers?
Some high strength fibers such as carbon fibers have longitudinal tensile strength of 1,000,000 psi. But these fibers have diameters that measure in the microns. How could a transverse tensile strength be measured in that case?


Bob Clark

 

[PerennialII]

I'd say they're not measured ... you work with lamina properties and this way eliminate the 'need' to work with composite constituent properties. What is & can be done for single fibers is unidirectional tensile testing, for example according to ASTM D3379.

 

[ravenprp]

Transverse tensile strength is the measure of a material's ability to resist pulling forces applied perpendicular to its length. It is an important property to consider in materials that are subjected to bending or shearing forces.

Transverse tensile strength is defined as the maximum stress a material can withstand before it breaks when a force is applied perpendicular to its length. It is often measured in units of force per unit area, such as pounds per square inch (psi) or megapascals (MPa).

For thin fibers, transverse tensile strength can be measured using techniques such as the single fiber tensile test or the microtensile test. These methods involve pulling a single fiber in a direction perpendicular to its length until it breaks, and then measuring the force required to break it. This force is then divided by the cross-sectional area of the fiber to determine the transverse tensile strength.

In the case of high strength fibers with small diameters, specialized equipment and techniques are needed to accurately measure transverse tensile strength. This may involve using high-resolution instruments and testing the fibers under controlled conditions to ensure accurate measurements.

Overall, measuring transverse tensile strength in thin fibers can be challenging, but it is an important parameter to consider for understanding the mechanical properties of these materials and their potential applications.