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Category > Applied Sciences Posted 07 May 2017 My Price 7.00

A circular specimen of MgO

12.42   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 5560 N (1250 lbf), the flexural strength is

105  MPa  (15,000  psi), and  the separation

between load points is 45 mm (1.75 in.).

12.43   A three-point bending test was performed on an aluminum oxide specimen having a circular cross section of radius 5.0 mm (0.20 in.); the specimen fractured at a load of 3000 N (675 lbf) when the distance between the support points was 40 mm (1.6 in.). An- other test is to be performed on a specimen of this same material, but one that has a square cross section of 15 mm (0.6 in.) length on each edge. At what load would you expect this specimen to fracture if the support point separation is maintained at 40 mm (1.6 in.)?

 

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IT KING
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Status NEW Posted 07 May 2017 12:05 PM My Price 7.00

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