Agilent Tensile Testing of Fibers using Keysight T150 UTM Quasi-static Tensile Test 5991-2269EN c20141030 [4 free download

File name Tensile Testing of Fibers using Keysight T150 UTM Quasi-static Tensile Test 5991-2269EN c20141030 [4

Keysight Technologies Tensile Testing of Fibers using Keysight T150 UTM Quasi-static Tensile Test Application Note Introduction the electrospinning setup to collect aligned nano/micro-ibers those can be Fibers for advanced applications, such easily transferred to templates for tensile as bulletproof vests, biomedical scaf- testing using the Keysight Technologies, folds, microelectronics, etc. require a Inc. T150 UTM. good combination of strength, stiffness and toughness. However, characterizing Tensile Test of Thin these properties for micro/nano-ibers is challenging because of their low stiff- Fibers: Challenges and ness. Moreover, because of the iber The T150 Advantage drawing process, most of the chemical bonds in a iber are oriented along the The most effective method for mechani- iber axis. This gives rise to a big differ- cal characterization of ibers is uniaxial ence in mechanical properties along the tensile test. During a tensile test, a iber iber axis compared to the perpendicular specimen is pulled at a speciied rate and direction and, hence, it is not reasonable the resulting reaction force is measured. to interpret iber properties from their As we know the initial sample dimensions bulk counterparts. Such differences are (iber length and iber diameter), sev- especially evident in ibers with smaller eral key engineering parameters can be diameters (few hundred nanometers to a calculated using the measured force and few 10's of microns). displacement. Some of these parameters are: ultimate tensile strength, Young's For example, one of the popular methods modulus, yield stress, yield strain and to fabricate ultra-thin failure strain. As more and more ibers, nano/micro-ibers is electrospinning. De- especially micro and nano-ibers are be- spite the importance, most of the studies ing proposed for structural applications, on mechanical properties have been the tensile parameters are important for limited to characterizing the ibermats better simulation and design of struc- instead of individual ibers. However, in tures using these ibers. a recent study, Chen et al. clearly shows that the mechanical behavior of colla- As the iber diameter decreases, the gen-chitosan ibermats is signiicantly absolute stiffness of a iber drops sig- different from that of the correspond- niicantly, and it becomes challenging ing individual ibers 1. In recent years, to measure the tensile parameters using multiple studies, including the above conventional test equipment. The mass reference, have shown ways to design and inertia of the grips and the driveshaft 02 | Keysight | Tensile Testing of Fibers using Keysight T150 U