ToDo Calculator’s composite materials and structures calculator is a vital resource for enthusiasts, engineers, and professionals in this field. Tailored for composite material properties, structural mechanics, and design considerations, it offers advanced features and precise calculations. With its user-friendly interface, it accommodates users of all skill levels, making it indispensable for designing composite structures, analyzing their behavior, and optimizing performance in various applications.
Flexing beam theory describes bending in slender structures mathematically.The formula is given by: Where: σ is the bending stress at a point on the beam, M is the bending moment at that point, y is the perpendicular distance from the neutral axis to the point where the stress is being calculated (the distance from the centroid […]
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Ductility Index is a Measure of material’s deformation capability before rupture.The formula is given by: Where: DI = Ductility Index. εult = Ultimate elongation (or other measure of elongation). L0 = Original length of the material.
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Brittleness Index is a Ratio of tensile strength to hardness.The formula is given by: Where: BI = Brittleness Index. σt = Tensile strength of the material. H = Hardness of the material.
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Neutral axis is a Line of zero bending stress in structures.The formula is given by: Where: yn = distance from the centroid to the neutral axis (in the direction perpendicular to the axis of bending). Ic = moment of inertia of the entire cross-section about its neutral axis A = cross-sectional area. yc = distance from
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Dielectric constant is a material’s ability to store electrical energy in fields.The formula is given by: Where: C = capacitance of the capacitor. ε = dielectric constant of the material between the plates. ε0 = permittivity of free space (approximately 8.854×10−12 F/m8.854×10−12F/m) A = area of the plates. d = distance between the plates.
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Material’s ability to allow substances through; varies with conditions.The formula is given by: Where: μ is the magnetic permeability of the material, B is the magnetic flux density (in teslas), and H is the magnetic field strength (in amperes per meter).
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Material’s resistance to electric current flow.The formula is given by: Where: ρ is the electrical resistivity (in ohm-meters, Ω⋅m), R is the electrical resistance (in ohms, Ω), A is the cross-sectional area of the material through which the current flows (in square meters, m²), L is the length of the material through which the current flows
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Heat conduction speed relative to storage.The formula is given by: Where: α is the thermal diffusivity. k is the thermal conductivity of the material. ρ is the mass density of the material. cp is the specific heat capacity of the material.
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Inverse of sum of reciprocals equals total inductance parallel.The formula is given by: Where: Inductance 1 is a first inductance in parallel. Inductance 2 is a second inductance in parallel. Inductance n is a number of inductance in parallel.
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Sum of individual inductances equals total inductance in series.The formula is given by: Where: Inductance 1 is a first inductance in series. Inductance 2 is a second inductance in series. Inductance n is a number of inductance in series.
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