Tensile Strength:

This number describes how large a non-moving load a bar can withstand before it breaks due to elongation. Units
are normally thousands of pounds per square inch. (103 psi) - Mega Pascals (mPa). Higher numbers indicate
materials which can withstand a stronger pull before breaking.

Tensile modulus, E, is defined as the ratio of stress (sigma) to strain in the direction of load (epsilon) below the proportionality
limit of the material (that is, the point at which the material begins to deform non-linearly). Tensile modulus in the flow direction (E1)
and in the direction transverse to flow (E2) are measured.

Specimens are placed in the self-aligning jaws of a tensile testing machine equipped with an axial extensometer (Figure M-1), and
load is applied. Care is taken to ensure that all data used for these measurements are taken in the elastic region of the stress-strain
curves.

http://www.actech.com/lab_info/mech_test.html

<--Back Next-->

http://www.owenscorning.com/owens/composites/about/glossary/tensilestrength.html