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Investigation of the effect of thermal stress on the interface damage of hybrid biocomposite materials

good mechanical properties at break and must first be plasticized or formulated with different additives. Starchy materials can then be implemented by casting or extrusion [ 5 , 6 ]. For this reason, we thought of strengthening a Starch matrix by two natural fibers–Hemp and Sisal. Sisal is a perennial plant consisting of a rosette of large leaves with triangular section up to 2 m long. It is a tropical plant and each plant can produce 180 to 240 leaves depending on the geographical situation, altitude, rainfall and variety considered. Sisal can be harvested in 2

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Studying of movement kinematics of dynamically active sieve

point for a cantilever beam of rectangular cross-section under the action of a static transverse bending force in accordance with [ 7 ] has the form of: f C x = − P x   max L 3 3 E I y = − P x   max 4 L 3 E H h 3 f C y = − P y   max L 3 3 E I x = − P y   max 4 L 3 E H 3 h , $$\begin{array}{} \displaystyle \left\{\begin{array}{} f_{Cx}=-P_x~\max\frac{L^3}{3EI_y}=-P_x~\max\frac{4L^3}{EHh^3}\\ f_{Cy}=-P_y~\max\frac{L^3}{3EI_x}=-P_y~\max\frac{4L^3}{EH^3h}, \end{array}\right. \end{array}$$ (2) where E is the Young’s modulus for the material of the elastic element

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Sensitivity Analysis of Internally Reinforced Thin-Walled Hollow-Box Beams Subjected to Uncoupled Bending and Torsion

the global behavior of the part may not be easily determined. Different ways of improving the mechanical behavior of engineering parts are used in practice. One of them goes through selecting a material having higher Young’s modulus value. The other is to modify the inertia moment of a considered part [ 1 , 2 ]. This can be achieved by inserting ribs in the longitudinal and/or transversal directions and/or webbing. If reinforcements are oriented in the normal direction as of the longitudinal ( z -axis) direction, it appears to be effective under bending loads, as

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Stress and Deformation Analysis of Clamped Functionally graded Rotating Disks with Variable Thickness

function, exponential function and Mori–Tanaka scheme. These distributions are implemented in the FEM using element based material grading. A finite element formulation for the problem is reported, which is based on the principle of stationary total potential. Disks are subjected to centrifugal body load and have clamped-free boundary condition. The work aims to investigate the effect of grading parameter “ n ” on the deformation and stresses for different material gradation law. 2 Problem Formulation In this section, geometric equations as well as different

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Numerical Validation of Drilling of Al6061-T6 with Experimental Data

drill bit. Figure 3 von Mises stress at mid-section of drill bit. Figure 4 von Mises stress at entry without drill bit. Figure 5 von Mises stress at completion of drilling. 2.2 Computational challenges The simulation that ran on an Intel second-generation mobile processor took approximately 2 days to complete. Subsequent models were created with only change in drill bit diameter. The simulation in whole with consideration of subsequent models took approximately around 8 to 16 days. The stable time increment is

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Finite element simulation and experimental validation of the effect of tool wear on cutting forces in turning operation

( y ) 0.0125 m Area moment of inertia of section ( I ) is given by ( bh 3 /12) 3.25521 × 10 -8 m 4 Section modulus ( Z ) is given by ( I/y ) 2.60417 × 10 –6 m 3 Young’s modulus of tool holder (E) 2.05 × 10 11 N/m 2 Distance from tool tip to center of strain gauge 0.045 m Work piece diameter 0.03 m The cutting force in turning operation is determined using a strain gauge. Here, the strain gauges are connected in half-bridge configuration type II. This configuration was specifically designed for measuring bending

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Experimental and Numerical Study of Bead Welding Behavior of HDPE Pipe Under Uniaxial Loading

specimens of type IV ( Figure 2 ): thickness T = 6 mm, width of narrow section W c = 6 mm, length of narrow section L = 33 mm, width overall W o = 19 mm, length overall L o = 100 mm, gage length G = 25 mm, distance between grips D = 65 mm, outer radius R o = 25 mm, and radius of fillet R = 14 mm. The mechanical tests were carried out with a Zwick/Roell-type machine with a capacity of 20 kN [ 9 ]. Figure 2 Specimens of uniaxial tensile test UT All dimensions of the specimens are taken according to ASTM standard D638-03 [ 10 ]. The

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Load-carrying capacity of the GFRP and CFRP composite beams subjected to three-point bending test – numerical investigations

] T and [(0/90) 4 ] T . Elastic properties and the strength limits of applied generic E-glass-epoxy and carbon-epoxy composites were adopted from the literature [ 25 ] and summarised in Table 2 . For the FRP composite analysis, the material properties were determined according to specific rules [ 26 ] in the main orthotropic directions that coincide with fibre orientation (principal 1 axis). Table 2 Mechanical characteristics of the GFRP and CFRP composites Mechanical properties GFRP CFRP Longitudinal tensile modulus, E 1 (GPa

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Finite element model updating using Lagrange interpolation

)+M_{a}P(0) \end{array}$$ The updating method is performed when the information matrix P and its derivatives P and P̈ are known. It is well indicated that these matrices are to be determined from the measurement components. 3 Expression for the information matrices The principal idea in this section is to interpolate the information matrices for each s-value using Eq. (4) . Suppose that “ m ” measurements are performed for a set of complex frequencies { s 0 , s i , s 2 , …, s m −1 , s m }, we have then “ m ” equation of the form Y a ( s i

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Experimental study on mechanical behavior of natural hybrid composites filled with ground nut shell ash

diverse applications ranging from aerospace to sporting equipment. The FRP composites primarily consist of synthetic fibers like glass, carbon, aramid and Kevlar. Although the synthetic fiber reinforced composites have excellent strength and hardness, they are high cost and non-biodegradable. Because of these reasons, over the past few years, the synthetic fibers have been replaced with natural fibers. The growing interest in using the natural fibers is due to their availability, satisfactory specific strength and modulus, light weight, low cost and biodegradability

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