Spatiotemporal mapping (SMA) is a graphical technique to visualise the evolution of data with time and space during process. This paper discusses benefits SMA in field polymer tribology via two highly different polymer/metal sliding systems. The found useful for qualitative quantitative characterisation analysis transfer phenomena at contact interface repeated sliding, e.g., slide-roll mechanis...

Different from the cross-section profile defects caused by uneven roll wear or external forces during hot finishing rolling, edge warping defect often occurs and has special local characteristics. However, cause control method of are still unclear. By superposition calculating shape, it is found that high-order comprehensive gap contour formed bathtub-shaped thermal parabolic original shape mai...

An original multiscale friction analysis is developed to characterize the interfacial phenomena during hot forging contact conditions in manufacture of wheels for railway industry. Hot upsetting sliding tests and roll-on-disc are performed reproduce tribological at meso micro-scale. Crushed embedded oxides found be present on sample's surfaces. Stick-slip occur due accumulation crushed oxides. ...

The purpose of this research paper is to study the tool wear and surface roughness of AISI 8620 material using coated ceramic tool by turning process. Ceramic cutting tools have outstanding material hardness, resistance to high temperatures, wear resistance, chemical stability and hot hardness. Ceramic tool with Al2O3 + TiC (golden) coating was used to investigate the surface roughness and tool...

hot rolling of a large ring of titanium alloy (lrt) is a highly nonlinear incremental forming process with coupled mechanical and thermal behaviors (mtbs) which significantly affect microstructure and properties of the ring. the feed rate of idle roll and the rotational speed of driver roll have major effects on ovality of the ring. in this paper, the effects of these parameters on the ovality ...

in this research, surface composite layers containing nano sized tib2, al2o3-tib2, zro2 and cnt particles have been fabricated on aluminum alloy substrates by friction stir processing. the effects of different processing variables such as number of passes and strengthening particle distribution, hardness, and wear properties of surface nanocomposite layers have been evaluated by electron micros...

functionally graded aluminium/zirconia metal matrix composite was fabricated using stir casting technique followed by horizontal centrifugal casting process and a hollow cylindrical functionally graded composite (150 x 150 x 16 mm) was obtained with centrifuging speed of 1200 rpm. the microstructural evaluation and hardness test was carried out on the outer and inner surface of the functionally...