Published in International Journal of Precision Engineering and Manufacturing
Discrete data points are noncontinuous without structural information. In this paper, we propose a new fast outlier removal method via voxel-based surface propagation. The main technical components of our approach include (a) an efficient and simple spatial partitioning scheme and (b) a specially-designed surface propagation method. Numerical analy...
Published in International Journal of Precision Engineering and Manufacturing
Heat transfer finite element analysis (FEA) for directed energy deposition (DED) process is crucial to properly estimate the residual stress in the additive manufactured part. The material deposition of the DED process is generally simulated by activation of finite elements. However, the activation algorithm of inactive finite elements is complicat...
Published in International Journal of Precision Engineering and Manufacturing
3D printing technology, which enables mass production and customized small-volume production, has attracted widespread interest throughout many industries. Applying 3D printing within the construction industry has now been well researched. There are also studies that show research trends related to 3D printing in the construction industry. These st...
Published in International Journal of Precision Engineering and Manufacturing
Ribs are the forming components of the framework of an airplane wing. The nose ribs studied have a U-shaped geometry that consisted of a flat plate, a curved flange with various radius of curvature, and straight flange, and were produced by a stamping process. During stamping, some defects such as thinning, thickening, wrinkling, and springback may...
Published in International Journal of Precision Engineering and Manufacturing
Metalworking fluids (MWF’s) are frequently used for cooling and lubrication during machining processes in manufacturing industries. MWF’s such as soluble straight oils, synthetic oils, solid lubricants, bio lubricants contain a mix of water and mineral oil with some percentage of vegetable oils and petroleum. These MWF’s are hazardous for the envir...
Published in International Journal of Precision Engineering and Manufacturing
To achieve the quick and accurate calibration of the geometric errors of NC machine tool, a new method with laser tracker on the basis of space vector’s direction measurement principle is proposed in the paper. A series of measuring points are mounted on the moving part of the machine tool, and then adjacent measuring points are connected to form a...
Published in International Journal of Precision Engineering and Manufacturing
In order to study the mechanism of crack propagation, the varied cutting-depth scratch experiment is carried out and smoothed particle hydrodynamics (SPH) simulation method is used to assistant the investigation. The SPH simulation results reveal that crack will propagate in the direction where stress concentration exceeds the fracture toughness of...
Published in International Journal of Precision Engineering and Manufacturing
The scientific and reasonable prediction of energy consumption in WEDM process is the key for energy-saving optimization of wire-cutting process in the design stage. The existing research about WEDM energy-saving studies mainly focus on the pulsed power control strategies. And, the research on non-pulsed energy consumption of WEDM is deficient. The...
Published in International Journal of Precision Engineering and Manufacturing
This study proposes a crank drive system that considers gait characteristics and is without dead points (GP-crank) to decrease the knee joint load for stand-up bicycles. A comparative experiment was conducted from the perspective of cycling kinematics to investigate the differences between the proposed GP-crank and conventional crank drive systems....
Published in International Journal of Precision Engineering and Manufacturing
The spindle rotation error is one of the important factors that affect the precision of the machined parts. The study of spindle rotation error is of great significance for finding the source of error, predicting the surface shape error of machining parts and improving the machining accuracy of ultra-precision machine tools. The structural of the a...
