How to Measure Modulus with a Dynamic Mechanical Analyzer. (cover story)Explains the process of measuring modulus value from a Dynamic Mechanical Analyzer (DMA). Importance of proper calibration of the DMA; Preparation of the DMA samples; Calculation of the modulus uncertainty....
We have now shown through analysis, and verified through experiments, that this method can be expected to have an increasingly negative impact on strength measurement as the Young's modulus and/or fiber diameter increases. We show that translational and angular misalignments are in fact neither ...
The Hill functional Hill is used and the Poisson's ratio ( v ) determines the penalty term of pressure in the functional. Further, the bulk modulus K is only used to determine the time step, for contact definitions and for hourglass stiffness. The Hill functional—not to be confused ...
Monofilament tensile strength and Young's Modulus measurements are standardized in ASTM C1557 - 14. The Standard prescribes the use of mounting tabs that are "appropriately designed to be self-aligning if possible, and as thin as practicable to minimize fiber misalignment." We have now shown ...
The Young’s modulus was measured at a speed of 0.5 mm/min until an elongation of 0.3% was reached, followed by a speed of 20 mm/min to measure the ultimate tensile strength and the ultimate elongation. 2.6. Polarized Light and Scanning Electron Microscopy (SEM) The square LB-PBF ...
However, flammability is not entirely reliable and, as already noted in the literature [72,73], can only measure the ability of materials to burn when directly exposed to a small flame. For this purpose, more sophisticated instruments, such as the conical oxygen consumption calorimeter, are cons...