Young's modulus

calculated my own Young’s Modulus Value with the result got from the tests using the equation for Young’s Modulus in Bending: E= l³/(4bd^3 ) x ( Δw)/( Δx) From using this equation, I achieved 14.44 E/GPa as a value, the published value, was: 11.37 E/GPa found on ‘The Wood Database’. The difference between my results and the Published values is: 3.07, and it was still within the range of the published value. Regarding the accuracy of the test, since this was my first time conducting this type of test, there may have been some mistakes I made that could have affected the results…

Which means in order to calculate Young’s modulus, we need to know the Poisson ratio of the material. In this experiment the Poisson ratio is assumed to be constant for all samples as 0.3, which is approximate value for shale rock and may not represent the real values and have impact on the final results. So calculation of Young’s modulus was also done with assumption of Poisson ratio equals to 0.2. The results differ slightly. Considering the error bar, this result should represent the right…

results within the allowable limits. ANSYS software is used to analyze the stresses and strains by performing static analysis for the given leaf spring specifications and modal analysis is performed to determine the natural frequencies and mode shapes to asses the behavior of the leaf spring with various parametric combinations. After prepared the model of the leaf spring by specifications it has to be subjected to analysis in ANSYS Workbench. Analysis involves meshing, giving boundary…

dimensions are 10 mm × 10 mm × 55 mm and V- notch made at angle of 45° with a depth of 2 mm then the experiment was done and values were tabulated. 3.3 SHORE DUROMETER HARDNESS STRENGTH Hardness was defined as materials resisting property to prevent permanent indentation. Durometer is a measure of hardness in polymers, fibre and rubbers where it measures the indentation depth in the material. According to ASTM D2240 tests were conducted on specimen using Durometer in the room temperature [5].…

Hardness value is relatively steady with increasing the indentation load. In addition, 20 s group subjected to the shortest dwelling period attains highest hardness result, when the dwelling period is extended to 60 s, the hardness value decreases from 14.5 GPa at 20 s dwelling to about 12 GPa. Figure 24: Vickers hardness value versus indentation load 5.6 Reduced modulus – load curve Figure 25 shows the dependence of reduced modulus on indentation load for different dwelling periods. The…

\begin{abstract} It is known that Groebner bases is EXP-SPACE in general. We show that this remains true over Boolean rings. \end{abstract} \section{Boolean Rings} Let $\mathbb{F}_2 = \mathbb{Z}/(2)$. Let $R_n = \mathbb{F}_2[x_1,\ldots,x_n, y_1,\ldots,y_n, z_1,\ldots,z_n]$ and % \footnote{Over $\mathbb{F}_2$, $+$ is the same as $-$.} \[ S_n := \{c^2 -c \,\, | \,\, c \in \{x_1,\ldots,x_n, y_1,\ldots,y_n, z_1,\ldots,z_n\} \}. \] Let \[ R_n^{\rm b} := R_n / (S_n). \] This is {\em Boolean ring},…

of CNF dosage on the tensile strength, elastic modulus, and elongation at break of CP/CNF and CP/CNF/ZIF-67 are shown in Fig. 3 and Tables S1–S4. As shown in Fig. 3(A) and Table S1, the tensile strength, elastic modulus, and elongation at break of neat CP is 7.37 MPa, 996 MPa, and 3.07%, respectively. After coating and crosslinking with CNFs, the mechanical properties of CP/CNF significantly improved. In particular, the tensile strength and elastic modulus of the CP/CNF composites with 2.5 wt%…

Hardness Testing Lab 1 Moriah Ausherman E882U679 Kunza Arifa ME-251-10959 Thursday 3:30 Experiment Date- 8/31/2017 Due Date- 9/7/2017 Introduction: The purpose of this lab is to ascertain the hardness of two different materials. One material is aluminum the other will be determined through testing. Hardness is defined as a material’s ability to resist plastic deformation by indentation. Harder objects are more likely to resist deformation. The results of a hardness test will be…

center. Figure (4.3): Failure pattern of cubes specimens (C1). 4.2.3. Static Modulus of Elasticity: Modulus of elasticity is a necessary parameter to determine the stresses in materials and structures. Even though concrete has nonlinear stress-strain behavior,…

Then to find Major Young’s Modulus (Ex), from the axial strain from the Axil/Longitudinal direction, was found by two points that contain a stress value and that are between 1000 µƐ and under 3000 µƐ Corrected Longitudinal Strain. Data point values are used in Tensile Chord Modulus of Elasticity equation to find Major Young’s Modulus. These values are listed Table 1 and the Major Young’s Modulus region is shown in Figure 5 (b). The final strength property found was Poisson’s Ratio (νxy) which…