... that the cracks in the damaged material can still affect the chip formation by providing additional Coulomb friction on the closed crack surfaces. To investigate the effect of the damage state of the matrix on the chip formation mechanism, this paper proposes a new cutting mechanics model for CFRP, by attributing...

...Mohammadreza Fazlali; Mauricio Ponga; Xiaoliang Jin This paper presents an analytical thermo-mechanical model of shear localization and shear band formation in orthogonal cutting of high-strength metallic alloys. The deformation process of the workpiece material includes three stages: homogeneous...

..., it becomes imperative to study their machining behavior. In this article, for the first time in the literature, machining characteristics of AZ91 magnesium foam reinforced with thin-walled hollow alumina ceramic microspheres being studied. Through cutting experiments, it is found that finer the size...

... experimental analysis, the progress being made in modeling and optimization has also been discussed in the paper. In particular, major challenges involved in model development for practical implementation, with a view to selecting optimum cutting conditions and cutting tool selection, are primarily discussed...

...Jian Gao; Xiaoliang Jin This paper presents the effects of ultrasonic vibration assistance on shear band formation and chip segmentation mechanism in orthogonal cutting of Ti–6Al–4V. Experimental observations of chip microstructure show that the shear bands disappear when vibration assistance...

... applications. However, its machinability is still considered a limiting factor in improving productivity. This paper presents a finite element modeling methodology for orthogonal cutting titanium alloy Ti-6Al-4V by considering material constitutive modeling together with material ductile failure in combination...

...Sinan Kesriklioglu; Justin D. Morrow; Frank E. Pfefferkorn The objective of this work is to fabricate instrumented cutting tools with embedded thermocouples to accurately measure the tool–chip interface temperature in interrupted and continuous turning. Thin-film thermocouples were sputtered...

...Don A. Lucca; Shivakumar Raman 20 01 2012 20 01 2012 coatings cutting grinding laser materials processing machining tribology Ranga Komanduri, Regents Professor and A. H. Nelson, Jr. Endowed Chair in Engineering at Oklahoma State University, passed away on September 6...

... to maintain a low edge radius to reduce micro end milling forces. The organization of the paper is as follows: Section 2 describes the mechanistic model development including the aforementioned effects. The experimental setup and calibration of the specific cutting energies are presented in Sec. 3...

...Christian D. Damsgaard; Dennis Mortensen; Pirmin Rombach; Ole Hansen This paper presents a simple procedure for simultaneous cutting and forming of thin Al foils for use in MEMS components. The procedure makes use of scaled down macroscopic sheet forming and cutting techniques by using a hydraulic...

...Xiao-Jin Wan; Cai-Hua Xiong; Lin Hua In machining process, machining accuracy of part mainly depends on the position and orientation of the cutting tool with respect to the workpiece which is influenced by errors of machine tools and cutter-workpiece-fixture system. A systematic modeling method...

... an approximate 3D end-face geometry by adjusting the length of each cell electrode. This method of electrode design and fabrication significantly reduced the fabrication time and cost compared to that of traditional cutting method. The bundled electrode allows better flushing of dielectric fluid to facilitate...

..., as currently available literature mainly focuses on static parametric relationships. A stochastic modeling and analysis technique called data dependent systems (DDS) was used to study RUM generated surface profiles and cutting force signals. Variations in the data sets of surface profiles, for the entrance...

...Hongtao Ding; Ninggang Shen; Yung C. Shin This study is focused on experimental evaluation and numerical modeling of micromilling of hardened H13 tool steels. Multiple tool wear tests are performed in a microside cutting condition with 100 μm diameter endmills. The machined surface integrity, part...

... on the surface finish of glass samples in order to limit the damages at the earlier stage of the machining process. A central composite design of experiments has been used to define experimental tries that consist of up-grinding or down-grinding glass samples with various feed rate, depth of cut, and wheel speed...

... that are generally neglected in the macroscale cutting models must be incorporated into the micromachining models. Diamond turning and mechanical nanomanufacturing techniques also require an understanding of crystallographic effects during material removal. This work presents a rate-sensitive plasticity-based...

... minimization approach. Subsequently, the RSPM model is validated by comparing the specific energies obtained from the model to those from a single-crystal cutting test. The RSPM model is seen to capture the experimentally observed variation of specific energies with crystallographic anisotropy (orientation...

... to in-line cutting systems such as wire electrical discharge machines or hot wire foam cutters. The motivation of this paper is to accurately calculate the tangent visibility for objects represented by polygonal surfaces. In this paper we define a new type of visibility - tangent visibility. We develop...

... model is better than the widely used universal Kriging model with a mean of second order polynomial functions. cutting Galerkin method Gaussian processes lapping (machining) manufacturing processes partial differential equations random noise sawing machines wire saw slicing wafer...

...Ruei-Hung Hsu; Zhang-Hua Fong The surface roughness of the work gear after plunge shaving is affected primarily by the arrangement of the serrations. Given the two possible shaving conditions—up cutting and down cutting—this surface roughness can be improved by arranging the serrations’ cutting...