Showing papers in "Journal of Manufacturing Processes in 2013"

TL;DR: In this paper, the edge rounding wear in carbon fiber reinforced composites (CFRP) was investigated using three different drill types: uncoated, diamond-coated and AlTiN coated carbide (WC-Co).

TL;DR: In this paper, high aspect ratio microtools fabricated in-house have been used for deep microhole drilling on glass using low electrolyte concentration and an aspect ratio of 11 has been achieved.

TL;DR: In this paper, an indirect but economical methodology is used for the simultaneous measurement of the traverse force, axial force and tool torque by monitoring the output torques of the servo motors and main spindle three-phase AC induction motor inside the FSW machine.

TL;DR: In this article, grain size changes induced during turning of AA7075-T651 (160 HV) alloy are modeled using the Finite Element (FE) method and a user subroutine is implemented in the FE code to describe the microstructural change and to simulate the dynamic recrystallization, with the consequent formation of new grains.

TL;DR: In this paper, two series of machining tests are designed to investigate the output characteristics of surface roughness and topography, material removal rate (MRR), electrochemical corrosion resistance of machined samples and also the machined surfaces are investigated by means of EDS and XRD analyses.

TL;DR: In this paper, an adaptive neuro-fuzzy inference system (ANFIS) has been employed to predict the process characteristics based on experimental observation, and an artificial bee colony (ABC) algorithm has been associated with ANFIS models to maximize CV and minimize SR, simultaneously.

TL;DR: In this article, a parametric study of dry wire EDM (WEDM) process of cemented tungsten carbide was conducted using air as dielectric medium to investigate effects of pulse on time, pulse off time, gap set voltage, discharge current and wire tension on cutting velocity (CV) surface roughness (SR) and oversize (OS).

TL;DR: In this article, a theoretical and experimental investigation on the spray atomization and delivery parameters in the grinding process of Al 2 O 3 engineering ceramics was performed to verify the delivery parameters of MQL spray including nozzle angle, nozzle distance, lubricant flow rate and gas flow rate.

TL;DR: The results of experiments on twin-roll casting of aluminum-steel clad strips are presented in this paper, where the results of metallographic, electron microprobe and transmission electron microscopy analysis of the aluminum and steel interface are shown.

TL;DR: In this paper, micro thin film thermocouples (TFTCs) were fabricated on thin silicon substrates, which were then inserted in the welding anvil as a permanent feature so that the sensors were always located about 100μm directly under the welding spot during joining of multilayer Ni-coated Cu thin sheets for battery assembly.

TL;DR: In this article, the authors report the results of formability testing of dual-phase steels under three basic conditions: (1) conventional limiting dome height (LDH) testing; (2) starting with a flat blank and using one pulse of EHF to fill the desired die geometry; and (3) beginning with a quasi-static preforming step to partially fill the die cavity and then using one Pulse of E HF to fill a remaining area of the die cavities.

TL;DR: In this article, a novel variant of friction stir processing was developed for producing polymer metal surface or bulk composites in order to enhance the mechanical, electrical and thermal properties of the composite.

TL;DR: In this paper, a robust chatter stability model, based on the analytical chatter stability milling model, is developed, and verified experimentally for milling operations while considering a changing natural frequency and cutting coefficient.

TL;DR: In this article, an analytical solution for turning and milling stability that includes process damping effects is described, based on a single coefficient similar to the specific cutting force approach to modeling cutting force.

TL;DR: In this article, a hybrid process, called iAtractive, combining additive, subtractive and inspection processes, along with part specific process planning is proposed, which aims to accurately manufacture complex geometries without being constrained by the capability of individual additive and subtractive processes.

TL;DR: In this article, a powder mixed near dry electrical discharge machining (PMND-EDM) process is proposed to further improve the machining efficiency of dry EDM and the influence of residual heat on MRR is analyzed.

TL;DR: In this article, the inner surface of the fuel injector nozzle holes of EDM and water jet guided laser drilling (Laser Micro-Jet) was analyzed using a scanning probe microscopy technique with true non-contact operating mode.

TL;DR: In this paper, a physics-based approach focusing on the nature of contact stresses in various machining zones and the effect of machining temperature was proposed for the prediction of residual stresses in orthogonal machining of AISI4340 steel.

TL;DR: In this paper, a limited number of forming experiments were conducted with AA5754 aluminum sheets using a cylindrical punch and counteracting fluid at different temperatures and pressures, and the maximum draw depth prior to wrinkling or tearing was quantified through experimental and computational modeling.

TL;DR: In this paper, the performance of sintered copper-titanium carbide (TiC) electrode tip in ultrasonic assisted cryogenically cooled electrical discharge machining (UACEDM) has been studied.

TL;DR: In this paper, an alternative, and potentially better, means to process prime LED sapphire wafers is proposed, and some potential alternative process approaches are discussed that utilize 2-body material removal.

TL;DR: In this paper, the microstructure and mechanical properties of friction welded super duplex stainless steel (UNS S32760) were examined using central composite design of response surface methodology.

TL;DR: In this paper, a position controlled robotic friction stir welding machine between aluminum and steel workpieces was used to evaluate the joint strength for single and multi-pin configurations and found that the aluminum-zinc braze joint appeared to be the largest contributor to joint strength.

TL;DR: In this article, the machinability of stellite 12 alloys with uncoated carbide cutting tool grades YG610 (K01-K10) and YT726 (K05-K 10/M20) and SANDVIK coated carbide tool SNMG150612-SM1105 under dry cutting conditions was investigated.

TL;DR: In this paper, a modified method of severe plastic deformation (SPD) entitled constrained groove pressing-cross route (CGP-CR) was introduced for imposing a high magnitude of equivalent strain of about 2.32 per pass on the sheet form samples.

TL;DR: In this paper, a process consisting of one micro deep drawing and two ironing stages was proposed for forming a micro cup with high CH/OD ratio at room temperature, which cannot be achieved by using a single stage deep drawing die.

TL;DR: In this paper, an innovative application of this impulse forming technique has been demonstrated: the EM shape calibration and correction of springback (sidewall curl) of DP600 and TRIP700 high strength steel (HSS) workpieces.

TL;DR: In this paper, a deformation analysis of the incremental sheet forming (ISF) process is presented, where a part is formed as one or more stylus tools are moving in a pre-determined path and deforming the sheet metal locally while the sheet blank is clamped along its periphery.

TL;DR: In this paper, a stress-based forming limit diagram for necking prediction which is based on the strain gradient theory of plasticity in conjunction with the M-K model has been represented and used in tube hydroforming.

TL;DR: In this paper, the residual stress formed in the cutting section is obtained after incorporating the XRD technique, which is compared with the experimental data and it is found that residual stress predicted agrees well with experimental results.