نتایج جستجو برای: ceramic foam

تعداد نتایج: 38082  

2006
Jay C. Hanan Chris Veazey Marios D. Demetriou Francesco DeCarlo J. Scott Thompson

Low density metallic foams of consistent controlled morphology offer improved unique material and mechanical properties, yet they have eluded traditional metallurgical engineering methods. A new method to produce metallic foam through a thermo-plastic expansion process has been discovered and characterized with microtomography. The new foaming process enables porosities unachievable through tra...

2011
Bogdan-Ioan Popa Steven A. Cummer

We present the design, architecture, and detailed performance predictions for a class of ground-plane acoustic cloaking shells. The design begins with a coordinate transformation which, in contrast to a quasiconformal design, yields a homogeneous but anisotropic material and a shell size that is comparable to the size of the object to be hidden. We apply the general approach to the design of a ...

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