Toughness high-speed tensile tests

Another important material is nylon, which is used in rope and webbing, and also in high-performance sports fabrics. In these the toughness requirement is in pure tension. Tensile impact testing and high-speed tensile testing are useful in these applications. The elongation of the material is often equally important. 

The measurement of mechanical properties is a major part of the domain of characterisation. The tensile test is the key procedure, and this in turn is linked with the various tests to measure fracture toughness... crudely speaking, the capacity to withstand the weakening effects of defects. Elaborate test procedures have been developed to examine resistance to high-speed impact of projectiles, a property of civil (birdstrike on aircraft) as well as military importance. Another kind of lest is needed to measure the elastic moduli in different directions of an anisotropic crystal this is, for instance, vital for the proper exploitation of quartz crystal slices in quartz watches. 

Figure 10. TEM image of stained PA-polybutadiene (15 vol%) after undergoing tough fracture in a notched tensile test at high speed (1 m/s). The section shown is next to the fracture surface (18).

---