AuSi, patterned Au and off-eutectic Sn-Au-Sn die attach materials and processes have been investigated for SiC die attach for high temperature applications. AuSi shear test results after 3000 hours of aging at 325C in air showed only a slight decrease in shear strength when assembled on Mo:Mn/Pd/Au metallized AlN. However, when assembled on Mo:Mn/Ni/Au metallized AlN, the die shear strength dec...

in this paper a new method based on strut-and-tie model (stm) is proposed to determine the shear capacity of simply supported rc deep beams and an efficiency factor for concrete with considering the effect of web reinforcements. it is assumed that, the total carried shear force by rc deep beam provided by two independent resistance, namely diagonal concrete strut due to strut-and-tie mechanism ...

Shear strain has been implicated as an initiator of intervertebral disc anulus failure, however a clear, multi-scale picture of how shear strain affects the tissue microstructure has been lacking. The purposes of this study were to measure microscale deformations in anulus tissue under dynamic shear in two orientations, and to determine the role of elastin in regulating these deformations. Bovi...

In the practical processes of coal mines and tunnel, rectangular roadways are widely used in underground environment. However, stress distribution law rock mass around is relatively complicated that influenced by different parameters, such as situ stress, geological structure, properties surrounding mass. It extremely significant to conduct systematic in-depth research regarding deformation fai...

The coal and rock dynamic disasters occur more frequently in deep mining, which is tightly correlated to the instability of pillars under high stress cyclic disturbance load. In this study, strength, deformation behaviors, failure mechanism loading a high-stress state were investigated by considering influence rate. experimental results indicate that compressive strength positively with rate, p...

The hybrid failure is a coupled mechanism under the action of tensile and shear stresses. critical in cemented paste backfill (CPB) since there are no visible signs prior to failure. Few studies have been conducted on stress response CPB. This most likely due lack suitable laboratory equipment test procedures. paper presents new punching apparatus evaluate We harness two-dimensional finite elem...

Many investigators consider the polymethylmethacrylate-bone interface the weakest link in the bone-cement-implant system. Push-out tests, frequently used for in vitro evaluation of the bone-cement interface, produced inconsistent results of shear strength. Therefore, a more reliable model for testing the shear failure of the interface was developed. Better understanding of intrinsic variations ...

In this paper, the off-axis tensile behaviors of triaxial woven fabric reinforced rubber composites (TWFR) was studied experimentally and numerically. The failure morphologies stress-strain curves specimens cut at seven different angles (0°, 15°, 30°, 45°, 60°, 75°, 90°) were obtained by finite element analysis experiment. results found to be in good agreement with experimental results. Stress-...

There is increasing interest in using cross-laminated timber (CLT) buildings because of its high strength and stiffness. In Japan, structural design guidelines for CLT were established 2016 construction mid-rise increasing. Wide-panel walls can exceed widths 10 m integrate cut-outs window door openings. However, under lateral loads, corner cracks at the openings have been most prevalent failure...