Abstract The aim of the article was to determine compressive strength and strain an unmodified a modified epoxy compounds containing montmorillonite filler, as well effect temperature aging time on mechanical parameters considered compounds. subject research both adhesive were made in four variants, which included resins based bisphenol A curing agents: triethylenetetramine polyamide agent. als...

Crack identification is a very important issue in mechanical systems, because it is a damage that if develops may cause catastrophic failure. In the first part of this research, modal analysis of a multi-cracked variable cross-section beam is done using finite element method. Then, the obtained results are validated usingthe results of experimental modal analysis tests. In the next part, a nove...

There have been a recent shortage of both critical care physicians and respiratory therapists with training in mechanical ventilation that is accentuated by the COVID-19 crisis. Hospitalists find themselves more often dealing treating critically ill patients on without specific training. The first part this review attempted to explain simplify some physiologic concepts basics ventilation. This ...

The normal operation of a 18650 lithium-ion cells has been monitored using rectangular rosette strain gauge and pair piezoelectric transducers. sensors for mechanical measurements provide information about the cell deformation mechanism electrodes structure during cycling. signal revealed three type processes. predominant pattern galvanostatic discharge process is an isotropic cylindrical shrin...

the first step in mining activities is rock excavation in both mine development and production. constant pressure for cost reduction and creating an improved/safe work environment for personnel has naturally resulted in increased use of mechanical excavation systems in many mining operations. also, mechanical excavation and mining is more compatible with automation, meaning possibility of reduc...