81 Result(s)
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Article
D. Y. **ng
Engineering
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Article
Surface error analysis and online compensation method for increasing the large-sized cylindrical part’s quality
The manufacturing quality of a large-sized cylindrical part’s surface is usually rough because of poorly positioning and improperly clam** when cutting it. This paper focuses on the surface error analysis to...
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Optimization of hot forming process using data mining techniques and finite element method
In the process of hot forming, many design variables have effects on the final results in different and complex ways, such as geometry feature and forming process parameters. It is difficult to understand the ...
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Life estimation of hot press forming die by using interface heat transfer coefficient obtained from inverse analysis
During the hot press forming process, the die experiences repeated thermal and mechanical loads owing to exposure to the heated workpiece. Such repeated thermal loads may cause deterioration in the mechanical ...
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Finite element based improvement of a light truck design to optimize crashworthiness
Occupant protection of vehicle cab is required for all the commercial vehicles. According to ECE R29-03 amendments, the simulation methods of the front pillar impact test and the side 20° pendulum impact of th...
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Co-operative control for regenerative braking and friction braking to increase energy recovery without wheel lock
This paper presents a regenerative braking co-operative control algorithm to increase energy recovery without wheel lock. Considering the magnitude of the braking force available between the tire and road surf...
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Numerical investigation of bolt fitting and fastening forces by elastoplastic finite element analysis
The bolt–flange fitting and detaching processes are numerically investigated by the updated Lagrangian elastoplastic finite element analysis. The elastoplastic behavior of the flange is modeled by the power-la...
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Fabrication of TiN-based three-terminal nano mechanical relays using nanoimprint technology
This paper reports the fabrication of nanoscale mechanical relays using a nanoimprint technology, called contact-transfer and mask-embedded lithography. This cost effective method facilitates the fabrication o...
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Effect of CdCl2 treatment on physical properties of CdTe films with different compositions fabricated by chemical molecular beam deposition
CdTe films with different compositions (Cd-rich, Te-rich and stoichiometric) were fabricated by revolutionary novel and low cost chemical molecular beam deposition (CMBD) method in the atmospheric pressure hyd...
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The effect of microstructure on creep behavior of a powder metallurgy (PM) beta gamma alloy
Pre-alloyed beta gamma titanium aluminide powder with a nominal composition of TiAl-2Nb-2Mo (G2) is consolidated by hot isostatic pressing. After consolidation, a step cooled heat treatment is performed to hom...
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The crack growth behavior of Incoloy 800H under fatigue and dwell-fatigue conditions at elevated temperature
Fatigue crack growth rate (FCGR) tests with different load ratios and dwell-fatigue crack growth rate (DFCGR) tests with different dwell times were conducted at 750°C for Incoloy 800H. As the load ratio increa...
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Numerical prediction of various failure modes in spotwelded metals
This paper aims to predict failure modes of spotwelded metals using an available failure criterion, namely, the ESI-Wilkins-Kamoulakos (EWK) rupture model, in the PAM-CRASH finite element (FE) commercial softw...
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Crack Tunnelling and Crack Tip Opening Angle in Drop-Weight Tear Test Specimens
Interrupted drop-weight tear tests (DWTT) of typical low-strength and high-strength pipe steels were performed at quasi-static and impact loading rates, to quantitatively characterize crack tunnelling and crac...
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Automotive windshield — pedestrian head impact: Energy absorption capability of interlayer material
During accident, the interlayer of windshield plays an important role in the crash safety of automotive and protection of pedestrian or passenger. The understanding of its energy absorption capability is of fu...
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The feasibility of acquiring a thermal analysis cooling curve by wet sample cup made of green sand
The purpose of this study is to determine whether it is feasible to acquire the cooling curve with obvious characteristic points by the wet sample cups made of green sand. If it were feasible, this would repla...
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Design of a one-way nanovalve based on carbon nanotube junction and C60
We report the conceptual construction of a one-way nanovalve based on a carbon nanotube intramolecular junction and a C60. Using molecular dynamics simulations, we demonstrate the flow behavior of helium through ...
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Enhanced selective forwarding scheme for alert message propagation in vehicular ad hoc networks
Vehicle-based applications were recently introduced to improve traffic safety and efficiency. These applications are classified into either safety-oriented or non-safety-oriented applications. Safety-oriented ...
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Nonlinear acoustic characteristics of Fatigue microcracks in al alloy plate
A system consisting of piezoelectric transducers, arbitrary waveform generator, power amplifier, laser vibrometer, digital oscilloscope, and a computer has been constructed to study the nonlinear acoustic char...
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Fault detection method with PCA and LDA and its application to induction motor
A feature extraction and fusion algorithm was constructed by combining principal component analysis (PCA) and linear discriminant analysis (LDA) to detect a fault state of the induction motor. After yielding a...
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Article
Shift in Optimal Joint Angle of the Ankle Dorsiflexors Following Eccentric Exercise
Exposure to unaccustomed eccentric exercise causes muscle damage. Pop** sarcomere theory [1] has been proposed and assumed that eccentric contraction-induced muscle damage predominantly occurs at muscle leng...
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Strengthening behavior of beta phase in lamellar microstructure of TiAl alloys
β phase can be introduced to TiAl alloys by the additions of β stabilizing elements such as Cr, Nb, W, and Mo. The β phase has a body-centered cubic lattice structure and is softer than the α2 and γ phases in TiA...
