The failure of resistance spot welds through the fusion zone along sheet/sheet interface (i.e., interfacial failure) is critical for automotive crashworthiness. This paper investigates effect hardness on behavior during tensile–shear test. AISI 1040 medium carbon steel, producing a high level mismatch welding, was selected as base metal. By ex situ tempering heat treatment, various levels are a...

Failure maps of sandwich panels such as beam, plate and shell are of great importance in designing such structures. In this paper, failure maps of sandwich beams with composite skin and honeycomb core are obtained. The effect of transverse shear in skins and core and the effect of double walls of honeycomb core have been taken into account. Shear deformation of skins and core are assumed to be ...

Abstract This paper is devoted to research the interface failure mechanism of coating in gun barrel, three models (interface shear failure, bending and crack growth failure) barrel are built with consideration thermal-pressure coupling effect, criterion given. The critical length/thickness ratio segments for different during firing process calculated based on temperature field simulation result...

The adiabatic shear bands (ASB) of the tubular metal specimens expanded explosively have been studied by many researchers in the recent years. The onset and evolutions of the multiple shear failure of metal cylinder under explosive loadings are affected by many factors such as the characteristics of the impulsive loadings, the dynamic behavior of the materials, etc. In this work, we investigate...

This paper uses experimental investigation and theoretical derivation to study the unified failure mechanism and ultimate capacity model of reinforced concrete (RC) members under combined axial, bending, shear and torsion loading. Fifteen RC members are tested under different combinations of compressive axial force, bending, shear and torsion using experimental equipment designed by the authors...

this paper aims at investigating the effects of weld nugget size and expulsion on the mechanical properties of low carbon steel resistance spot welds using tensile-shear test. mechanical performance of spot welds are described in terms of failure mode, peak load and failure energy obtained from the tensile-shear test. the effects of voids and porosity as well as electrode indentation associated...

Abstract Rock–shotcrete structures are often suffered from dynamic shearing. However, the understanding of shear response rock–shotcrete is still at its infancy. To investigate effects strain rate and interface roughness on structure, laboratory tests were carried out modified double notched sandstone–concrete specimen. Testing results show that strength peak specimens both far less than those ...

A time-dependent moment tensor inversion technique is applied to 20 seismic events recorded ahead of an advancing tunnel excavation at the Underground Research Laboratory (URL) in Canada. The data are recorded on a 16-sensor triaxial accelerometer array, and the events are chosen from a section of the tunnel such that the event-sensor paths are unaffected by the presence of the tunnel. Factoriz...