Design of hybrid material-Part 3-Case studies

Design of hybrid material-Part 3-Case studies - MTL 700...

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Design of hybrid materials - Metal Matrix Composites - Refrigerator Walls - Metal for microwave protection      Dr. Habiba Bougherara, Fall 2007 MTL 700
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Review Four type of hybrid  materials: composites,  sandwiches, lattices and  segmented structures Each is associated with a set  of property models that  allow its properties to be  estimated This chapter will illustrate  their use to fill specified  needs that cannot be met  with single materials
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Problem The most common loading of mechanical structures is  bending Material index (excellence factor) for bending at  minimum weight is M=E½/r Al and Mg alloys rank highly, Ti and Steels are less good How could we enhance the performance of the Mg alloy? Design of metal matrix composites
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Design requirements Design of metal matrix composites Function Constraints Objective Configuration Free variables Light stiff beam Magnesium Matrix Maximize stiffness to bending (index  M) Fiber composite Choice of reinforcement and volume  fraction
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Method Step 1:  Seek what configuration able to offer high  flexural stiffness at low weight using the configuration- functionality –chart (Fig. 13.4 Ashby book) Step 2:  Determine the bounds (limits) using the  superposition rules and explore   possible hybrids using 
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This note was uploaded on 01/18/2012 for the course MECH MTL 700 taught by Professor Habiba during the Fall '11 term at Ryerson.

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Design of hybrid material-Part 3-Case studies - MTL 700...

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