Download Metal Foams: A Design Guide by M. F. Ashby, Tony Evans, N. A. Fleck, Lorna J. Gibson, John PDF
By M. F. Ashby, Tony Evans, N. A. Fleck, Lorna J. Gibson, John W. Hutchinson, H. N. G. Wadley
Steel foams are on the vanguard of technological improvement for the automobile, aerospace, and different weight-dependent industries. they're shaped by means of quite a few equipment, however the key part in their manufacture is the inclusion of air or different gaseous wallet within the steel structure.The undeniable fact that fuel wallet are found in their constitution offers an noticeable weight virtue over characteristically forged or machined stable steel elements. the original constitution of steel foams additionally opens up extra possibilities to enhance on extra advanced equipment of manufacturing components with area inclusions corresponding to sand-casting. This consultant presents info at the benefits steel foams own, and the functions for which they might end up suitable.Offers a concise description of steel foams, their manufacture, and their merits in industryProvides engineers with solutions to pertinent questions surrounding steel foamsSatisfies a huge desire available in the market for info at the homes, functionality, and functions of those fabrics
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The standard deviation in the tensile strengths of aluminum foams, like that of the compressive strength, is between 5% and 15% of the mean. Typical data for the tensile strength of metallic foams are given in Chapter 4. 5 Shear testing The shear modulus of metallic foams is most easily measured by torsion tests on waisted cylindrical specimens. The specimens should be machined to the shape of ASTM E8-96a, to avoid failure of the specimen in the neck region or at the grips. The minimum dimension of the specimen (the diameter of the cylinder) should be at least seven times the cell size to avoid specimen/cell size effects.
Typical data for the tensile strength of metallic foams are given in Chapter 4. 5 Shear testing The shear modulus of metallic foams is most easily measured by torsion tests on waisted cylindrical specimens. The specimens should be machined to the shape of ASTM E8-96a, to avoid failure of the specimen in the neck region or at the grips. The minimum dimension of the specimen (the diameter of the cylinder) should be at least seven times the cell size to avoid specimen/cell size effects. Torque is measured from the load cell.
Solid density: s ); properties without the subscript s are those of the metfoam (foam density: ). 4, and in recent publications in leading materials journals. The most comprehensive data source is the CES (1999) database and associated literature; it draws on manufacturers’ data sheets, on published literature, and on data supplied by research groups, worldwide (Evans, 1997/1998/1999; Banhart, 1999; Degisher, 1999; Simancik, 1999). 3 and later chapters. 3 show a schematic stress–strain curve for compression, together with two sets of real ones.