... been investigated experimentally. The effects of laser machining conditions including laser power, laser scanning speed, laser incidence angle, and laser-off delay time on the sidewall slope and bottom surface roughness of the micro-cavities were comprehensively investigated. The results indicated...

... evolution and significantly improve the surface roughness of the as-built walls, thus reducing the need for further postprocessing of the wall surfaces. Although the microstructure constituents of the as-built wall structures with and without machining interventions are similar, the machining interventions...

...Hongyi Xiang; Haoxiang Wang; Renke Kang; Shang Gao Surface roughness is a critical indicator to evaluate the quality of 4H-SiC grinding surfaces. Determining surface roughness experimentally is a time-consuming and laborious process, and developing a reliable model for predicting surface roughness...

... roughness, while studies that simultaneously investigate the impact of contact force, spindle speed, feed rate, inclination angle, and path space on the material removal profile (MRP) and the surface roughness are lacking. This paper proposes a hybrid optimization method that considers dimensional accuracy...

... machined surface has not yet been understood, especially lacking in situ evidence during the material removal process. In this article, effects of cutting edge radius on surface roughness, subsurface deformation, and work hardening of nickel-based cast superalloy are studied through an in situ imaging...

... a novel hemispherical tip-based tool is used to finish the hemispherical cups. The study aims to develop a novel theoretical mathematical model to predict the surface roughness reduction of the hemispherical cups using the present MRF process. Because the magnetic field regulates forces in the MRF process...

... that the level of roughness kept decreasing with increasing the spindle speed, but once the speed arrived at 36,000 rpm, the surface roughness increased. That could summarize the reason behind this phenomenon; during the increase in the spindle speed, the friction between the tool face and the deformed chip...

... + grinding process) will save 78% of the cost and 83% of the time for making each side seal component, and the accuracy of the average surface roughness of the component will be 2.1 times that of the traditional manufacturing method. If the components are polished with a self-made polishing rod, the accuracy...

...S. S. Ao; C. J. Li; W. Zhang; J. P. Oliveira; Z. Zeng; Z. Luo In the present work, the effects of laser surfacing aiming at modifying the surface roughness on NiTi sheets prior to the application of ultrasonic welding (USW) were investigated. Three different configurations joining original...

...Feng Zhang; Arif S. Malik In thin-gauge cold rolling of metal sheet, the surface roughness of work rolls (WRs) is known to affect the rolled sheet surface morphology, the required rolling load, and the roll wear. While modeling of rough surfaces using statistical asperity theory has been widely...

... parameters is particularly important for improving their machining quality and saving the production cost simultaneously. This research aimed to minimize the surface roughness by optimizing the comprehensive jet parameters in cryogenic milling Ti-6Al-4V. By comparing the cooling capability of liquid nitrogen...

... system. The resultant trajectories of cutting edges are obtained by kinematic synthesis of system vibrations, tool rotations, and machining feed. Next, both the surface location error (SLE) and the surface roughness are simultaneously extracted from the edge trajectories. A series of cutting tests...

...-machined surface possesses near-random lay pattern, which is also reflected by the fast Fourier transform (FFT) spectrum of surface roughness profiles. Experimental and MDS results reveal that the hard precipitate suffers cracks which propagate vertically as well as radially and as the tool travels from Cu...

... error (SLE) and surface roughness under both stable and period-2 bifurcation conditions. These results are summarized. To aid in parameter selection that yields period- n behavior, graphical tools including Poincaré maps, bifurcation diagrams, and stability maps are presented. Manuscript received...

... spark, the surface roughness was found to increase. TEM micrographs have confirmed the formation of amorphous Si along with a region of fine grained Si entrapped inside the amorphous matrix. However, there were no signs of other defects like microcracks, twin boundaries, or fracture on the surfaces...

...Salah Eddine Brika; Yaoyao Fiona Zhao; Mathieu Brochu; Justin Mezzetta This paper proposes an integrated approach to determine optimal build orientation for powder bed fusion by laser (PBF-L), by simultaneously optimizing mechanical properties, surface roughness, the amount of support structure...

.... Each of electroconductive ceramic tools is machined by die sinking electric discharge. Four experimental setups are also prepared to investigate the effect of the surface roughness on the quality of dry deep drawing: the unlapped and the lapped electroconductive ceramic dies in dry condition...

.... Finally, the machined surfaces were generated in both brittle and ductile removal modes at any specific removal rate and the maximum undeformed chip thickness using the electric handpiece and coarse burs. Surface roughness did not show the measureable changes with the specific removal rate and the maximum...

... January 2, 2013; published online January 25, 2013. Assoc. Editor: Donggang Yao. 26 07 2012 02 01 2013 The aim of this study is to investigate optimal air-driving fluid jet polishing (FJP) parameters by using Taguchi's method to improve surface roughness of N-BK7 optical glass...

... and surface roughness were measured offline. For the cutting parameters, the cutting speed and depth of cut were varied, but the feed rate was kept constant. In the flank wear tests, machining length was corresponded to tool life. In addition, in order to find out the effect of cutting parameters on surface...