Investigation of electrical and impact properties of carbon fiber reinforced polymer matrix composites with carbon nanotube buckypaper layers

Investigation of electrical and impact properties of carbon fiber textile composites

“…First, the data acquisition software VeePro was opened using the New DC program file that was previously modified by Hill (2012). determine the accuracy of the measurements, which is described further in Section 3.6.…”

“…The samples were cut into horizontal beams and square plates with the use of a water jet. The water jet is chosen for its ability to produce finished edges (Hill, 2012); however, due to poor gripping of the panels upon cutting, some of the samples had rough and uncut edges with some delamination. The condition of each sample from both panel 1 and panel 2 is summarized in Table 1 and seen in Beam samples 1-7 through 1-9 and 2-7 through 2-9 were used for the electrical characterization, as those samples featured less damage and little to no delamination, which may affect their electrical characterization.…”

“…The dimensions of each sample are seen in Table 2.2 and 2.3. The composite samples were prepared for electrical characterization using the method utilized by Hill (2012). First, spacing of the wires was determined in order to have efficient placement of the probes on the sample.…”

“…All samples were left to dry for 24 hours to ensure the epoxy was fully cured. The last step in the sample preparation procedure was to smooth the cured epoxy surfaces to remove any excessive material and again minimize any contact resistances that could occur between the samples and electrodes (Hill, 2012). The epoxy used is seen in Figure 2.6 Agilent's VEE Pro version 8.5 software is used as DAQ software to determine the voltage sensed by the U2531A DAQ and the program was written by Hill (Hill, 2012).…”

“…In this section the error analysis for the measurements conducted using Hill's setup (Hill, 2012) is presented. Using the U2531A DAQ and Power Supply 6612C, the elemental errors of the equipment were found using the elemental uncertainty analysis previously conducted by Hill (Hill, 2011).…”