a20. A hybrid sandwich to sustain bending loads andwith face thickness,t-5mm and
ID: 588272 • Letter: A
Question
a20. A hybrid sandwich to sustain bending loads andwith face thickness,t-5mm and total thickness of 30cm, s esiened panel X, with face thickness, t-5mm and total thickness of 30cm, is designed Materials Stiffness 115 GPa 80 GPa 60 GPa 105 GPa Thermal conductivity 60 W/m.°C 110 W/m.°C 90 W/m.°C 70 W/m.°C By considering the given criteria of excellence, choose the best combination of materials to achieve the best bending stiffness-to-thermal conductivity ratio, use Equations (11) to (13) to inform your answer. Eq (11) 2t Eq (12) Eq (13) 2t/d 1-2r/d a. Face= A & Core-8 b. Face= A & Core-C c. Face C& Core-EA d. Face: B & Core e. Face = D & Core:A f. None of the above 13)Explanation / Answer
In the given information, we can determine the highest value of young's modulus and lowest value of thermal conductivity which can determine the best combination of materials to acheieve best bending stiffness to thermal conductivity ratio.
In the given ranges as we can see thermal conductivity is maximum for Material B and lowest for Material A and if we use young's modulus, then its maximum for Material A. So material A is best choosen for bending stiffness to thermal conductivity ratio.
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