background: topical anesthesia has been widely advocated as an important component of atraumatic administration of intraoral local anesthesia. the aim of this study was to use direct observation of children’s behavioral pain reactions during local anesthetic injection using cotton-roll vibration method compared with routine topical anesthesia. materials and methods: forty-eight children partici...

Magnesium alloys are still the focus of current research. Special importance is attached to economic production semi-finished magnesium products, for example flat products. In past 20 years, twin-roll-casting alloy strips has been intensively investigated at Institute Metal Forming and successfully applied various compositions (from AZ31 ZAX210 WE43). The TRC technology enables providing a wide...

This paper presents a reduce roll vibration of the full vehicle model with passive suspension systems using vibration absorber to change the dynamic system matrix stat’s eigenvalue. Since using the controller system has been splurged and required to energy consuming, in this research the vehicle body roll vibration has been reduced and supplied vehicle stability using a vibration absorber for t...

Double-roll rotary forging is an emerging plastic forming technology based on forging. Owing to the advantages of labor saving, small eccentric load, low noise and vibration, good uniformity, high surface quality, material it very promising for fabrication large-diameter thin-walled disc. To date, a few relevant researches double-roll metal discs have been reported, mechanisms process disc work...

High-strength aluminum alloys, such as the AA7075 alloy, offer great potential for lightweight construction thanks to their high specific strength. However, strength and low ductility are a challenge processing these materials. In our study, three different process routes (T6, W-Temper, O) roll forming of hat profile investigated experimentally in an FE-simulation. Since targeted production is ...

Advanced manufacturing processes such as near-net-shape forming can reduce production costs and increase the reliability of launch vehicle and airframe structural components through the reduction of material scrap and part count and the minimization of joints. The current research is an investigation of the processing-microstructure-property relationship for shear formed cylinders of the Al-Cu-...