A circular specimen of MgO is loaded using a three-point bending mode. Compute the minimum possible radius of the specimen without fracture,

Question

A circular specimen of MgO is loaded using a three-point bending mode. Compute the minimum possible radius of the specimen without fracture, given that the applied load is 750 N (169 lbf), the flexural strength is 105 MPa (15,000 psi), and the separation between load points is 75.0 mm (2.95 in.).

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Kim Chi 4 years 2021-08-15T23:51:48+00:00 1 Answers 52 views 0

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  1. thanhcong
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    2021-08-15T23:52:53+00:00
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    Answer:

    The answer is 4.7*10^{-3} m

    Explanation:

    The equation for maximum ratio is given

    r max = \sqrt[3]{\frac{F*L}{ro*pi} } = \sqrt[3]{\frac{750 (45*10^{-3})}{(105 * 10^{6})*pi } }

    rmax = 4.7*10^{-3} m

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