The Influence of Wire Mesh Block Configuration and Reduction Rate on the Interlaminar Strength of Porous Net Materials during the Consolidation Process

Porous net materials manufactured by pressure welding of metal wire meshes are used to make permeable products with required properties. A structured approach is used to analyze the interlaminar strength, which involves determining the strength using the mesh geometric parameters (typical sizes), number of meshes, their mutual bracing, plastic deformation mechanism as well as the quality of structural element consolidation. Functional dependencies are obtained, which can be used to determine the design and technological parameters that provide maximum interlaminar strength of porous net materials with specified values of relative wire block reduction. It is shown that the poor quality of welded mesh joints formed by roll welding can be explained by the high resistance of micro-rough surfaces to deformation, and the low rate of mass transfer in the contact area.  An improved interlaminar strength of porous net materials at low rates of deformation can be achieved through contact creep flow and an increased rate of diffusion mass transfer. At intensive dynamic loading, the interlaminar strength can be increased by local heating of contact surfaces, a decrease in the resistance to deformation of micro-rough surfaces, and an increase in the rate of mass transfer. The parameters that provide maximum interlaminar strength of porous net materials are determined.

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