The use of thin-walled structures as impact energy absorbers are well known. thin aluminum cylinder tube is a good absorber. However, the energy-absorbing design must also have sufficient toughness. In this research, we made modifications to improve performance tube. cylinder's modification prepared by adding four grooves along wall in axial direction. Numerical modeling was carried out using f...

Endothermic high temperature reactions are usually carried out in metal tubes heated by gas burners. Electrical heating allows substantial reduction of CO2 emissions. We propose the usage a composite tube, where thin metallic layer is embedded between an inner and outer ceramic layer. While monolithic ceramics suffer from brittleness low tolerance to thermal stress, only made ceramics, while fi...

Aluminum foam has received considerable attention in various fields and is expected to be used as an engineering material owing to its high energy absorption properties and light weight. To improve the mechanical properties of aluminum foam, combining it with dense tubes, such as aluminum foam-filled tubes, was considered necessary. In this study, an aluminum foam-filled steel tube, which consi...

Tube flaring process involves a conical tool of certain length which is displaced to get an end flared tube, utilized form tight seal between pipes or tubes. refers kind forging often cold working operation. The tube forming widely used in several industries condenser pipes, car seat structures, exhaust piping, etc. Thin-walled tubes were automobiles reduce the total weight for better performan...

Abstract The sudden impact during a collision of an automobile may cost the life passengers. Several researchers are working to design materials and structures which can absorb impact-energy before passing it One such solution is crash-box-structure placed primarily on frontal side, in-between bumper main part automobile. crash-box-structure’s ability energy influenced by its deformation-proper...

Background: The cornerstone of the treatment of respiratory distress syndrome (RDS) is respiratory support and surfactant replacement therapy. The administration of surfactant through a thin intratracheal catheter is one of the methods used to reduce one of the standard technique complications of a surfactant injection (Intubation-Surfactant-Extubation method [INSURE]). The aim of this study wa...