Effect of the degree of compactness of the cross section of soft interlayers

Abstract

In practice it is often necessary to determine the mechanical properties (OT, aB) of nondetachable joints in the form of composites consisting of a strong metal base T and a soft interlayer M; these composites may have different degree of compactness of the cross section = S/B (e.g,, in laboratory tests of mechanically inhomogeneous welded specimens, specimens cut out of thick welded joints, etc.), Because of the difference in compactness of the section, the results of such tests are mutually not comparable [i]. The use of the dependences obtained in [2, 3] and other works for evaluating the effect of the compactness of the cross section on the mechanical properties of soft interlayers in composites leads to considerable errors, especially when there is only a small difference between the mechanical characteristics of the materials T and H (oTT/OT M, oBT/~I << 2),