The vibration fatigue durability of eutectic Sn37Pb and near-eutectic Pb-free Sn3.9Ag0.6Cu solders is quantified, based on test data available from the literature [1]. The tests use random broad-band excitation (between 20Hz & 2000Hz), on selected SAC and SnPb surface mount interconnect styles. In the test, step-stress excitation was applied in the out-of-plane direction by increasing the RMS e...

To improve the durability of lead free solder joints under high strain rates, such as drop and shock loading, some area array manufacturers have converted to low silver (Ag) content tin silver copper (SAC) solder spheres instead of the commonly accepted SAC305 solder. While the lower silver content SAC solder joints may address high strain rate shock loads, the durability of these joints under ...

Construction project engineers are faced with the task of ensuring reliability and durability pile foundations while achieving their cost-efficiency. This paper presents experimental data on implementation RIT technology, a Russian know-how in field that has been successfully used by construction projects Russia abroad. Evidence is presented advantages make RIT-piles an undeniably competitive c...

Improving the durability and reliability of such components as ball joints cars is very important. The article presents experimental studies to determine surface roughness incomplete spherical surfaces machine parts.

A strategy is proposed for using control methods of a different nature, which allows increasing the service life, maintaining durability, reliability and safety indicators electromechanical systems electrical equipment electric drives