Abstract Crash boxes in vehicles are one of the passive safety measures that aim to reduce injury passengers and damage vehicle during a collision. Their function is absorb mechanical energy resulting from collision by deforming plastically. Considering human safety, not only must be damped, but also forces acting on controlled. This force control can adjusted some extent using trigger mechanisms. There wide variety research hole type triggers, they concentrated traditional shapes; unique or...

The quality of foam metal materials, which are commonly used in industrial applications due to their unique properties, increasingly relies on secondary processing. Metal foams produced as plates or the desired shape via direct indirect foaming. Given intended use, primary challenge lies determining how cut them with necessary precision and join sufficient strength. However, most difficult aspect is cutting required shapes combining fixed removable securing mechanisms. This work involved two...

Self-piercing riveting (SPR) is a high-speed mechanical joining technique for sheet metal materials. In this study, the properties of DC04 steel and AA5182 aluminium alloy in triple combinations joined by SPR method were investigated. For purpose, triple-joining processes performed different combinations, macro-structural analysis tensile shear tests carried out comparing their properties. As result highest forces obtained FFA (DC04-DC04-AA5182) AFF (AA5182-DC04-DC04) combinations. number...

Purpose This study aims to investigate the effects of five different printing parameters, namely, speed (PS), temperature/nozzle temperature/extrusion temperature, heated-bed raster angle (RA) and layer height (LT), on mechanical properties. Design/methodology/approach American Society for Testing Materials (ASTM) standards were used specimen design. Then, Taguchi method was design experiment an L16 orthogonal array preferred. Tensile, Shore D surface roughness tests conducted polylactic...

Abstract With the new manufacturing technologies, it has been possible to machine hard metals efficiently. During high-speed machining (HSM) of high-strength steel, poor surface integrity workpiece affects performance process. Surface roughness, microstructure, microhardness and residual stress are key indices for directly controlled by tool wear cutting parameters. In this study, high-feed milling (HFM) a pocket on test samples made DIN 1.2344 ESR mould steel with 55 HRc hardness was...

Reducing fuel consumption, increasing road holding and overcoming air resistance are the main goals in field of vehicle aerodynamics. Therefore, controlling lift-ing forces is very important for stability. Generally, lifting used as low possible an additional downforce required order to increase holding. Various parts have been developed control airflow passen-ger cars. One them rear lower diffuser which located on floor ve-hicle. In this study, length value base kept constant edge, effects...

Polymers have rapidly replaced the utilization of glasses, ceramics, metals, and organic textiles due to their cost-effectiveness, lightweight nature, enhanced functionality. Nevertheless, as a consequence chemical composition, polymers undergo protracted degradation process in natural environments, resulting significant accumulation plastic waste since inception. This has now reached critical threshold, posing substantial risk both human well-being preservation ecosystems. In recycling...

The manufacture of polymers has experienced significant growth since the 1900s due to their favorable attributes such as ease manufacturing, cost-effectiveness, desirable chemical and physical qualities, well lightweight nature. escalating utilization plastic begun inflict damage upon environment, organisms, human well-being, hence giving rise challenges pertaining recycling waste management. In process recycling, it is necessary subject thermoplastics two cycles melting in order get correct...

Abstract The authors have requested that this preprint be removed from Research Square.