Table 1.

Mechanics terminology

Descriptor	Description*
Strength	The maximum capacity to withstand a load, expressed as a stress threshold value
Ultimate tensile strength/stress	The maximum stress that can be withstand while being exposed to tensile loads
Stress	Force per unit area
Peak circumferential stress	The highest stress value in the circumferential direction (the direction that undergoes (highly likely) the largest deformation in vivo)
Strain	Deformation measure
Uniaxial extension	Stretch in only one direction
Stiffness	Measure of the material’s resistance to elastic deformation
Elasticity	The ability to return to its original shape after undergoing deformation
Elastic (Young’s) modulus	Measure of the material’s resistance to elastic deformation, assuming a linear response
Tensile testing	A test wherein a sample is subjected to a controlled tensile load, often until failure

*Various definitions possible, however aimed at simple definitions for non-expert in the field