User profiles for Jun Ni

Jun Ni - Verified email at umich.edu - Cited by 23592
Jun Ni - Verified email at uiowa.edu - Cited by 2429

Modelling and analysis of micro scale milling considering size effect, micro cutter edge radius and minimum chip thickness

X Lai, H Li, C Li, Z Lin, J Ni - International Journal of Machine Tools and …, 2008 - Elsevier
This paper presents mechanisms studies of micro scale milling operation focusing on its
characteristics, size effect, micro cutter edge radius and minimum chip thickness. Firstly, a …

A static model of chip formation in microscale milling

CJ Kim, JR Mayor, J Ni - J. Manuf. Sci. Eng., 2004 - asmedigitalcollection.asme.org
This paper discusses the development of an enhanced, static model of chip formation in
micromilling processes that is able to describe the intermittency of the chip formation observed …

Intelligent prognostics tools and e-maintenance

J Lee, J Ni, D Djurdjanovic, H Qiu, H Liao - Computers in industry, 2006 - Elsevier
In today's global competitive marketplace, there is intense pressure for manufacturing
industries to continuously reduce and eliminate costly, unscheduled downtime and unexpected …

A volume-averaged two-phase model for transport phenomena during solidification

J Ni, C Beckermann - Metallurgical Transactions B, 1991 - Springer
A basic model of the transport phenomena occurring during solidification of multicomponent
mixtures is presented. The model is based on a two-phase approach, in which each phase …

Ab initio prediction of stable boron sheets and boron nanotubes: Structure, stability, and electronic properties

X Yang, Y Ding, J Ni - Physical Review B—Condensed Matter and Materials …, 2008 - APS
Using first-principles calculations, we predict a novel stable boron sheet and boron nanotubes
which show various electronic properties. The boron sheet is flat and has the structure …

Watchdog Agent—an infotronics-based prognostics approach for product performance degradation assessment and prediction

D Djurdjanovic, J Lee, J Ni - Advanced Engineering Informatics, 2003 - Elsevier
In today's competitive market, production costs, lead time and optimal machine utilization
are crucial values for companies. Since machine or process breakdowns severely limit their …

A review of 4D printing

F Momeni, X Liu, J Ni - Materials & design, 2017 - Elsevier
Research into 4D printing has attracted unprecedented interest since 2013 when the idea was
first introduced. It is based on 3D printing technology, but requires additional stimulus and …

First principles study of structural, vibrational and electronic properties of graphene-like MX2 (M= Mo, Nb, W, Ta; X= S, Se, Te) monolayers

Y Ding, Y Wang, J Ni, L Shi, S Shi, W Tang - Physica B: Condensed Matter, 2011 - Elsevier
Using first principles calculations, we investigate the structural, vibrational and electronic
structures of the monolayer graphene-like transition-metal dichalcogenide (MX 2 ) sheets. We …

CNC machine accuracy enhancement through real-time error compensation

J Ni - 1997 - asmedigitalcollection.asme.org
Improving CNC machine tool accuracy has received significant attention recently. This paper
intends to provide an introduction of the real-time error compensation methods as applied …

Progress in synthesis of highly active and stable nickel‐based catalysts for carbon dioxide reforming of methane

S Kawi, Y Kathiraser, J Ni, U Oemar, Z Li… - …, 2015 - Wiley Online Library
Ni (100) and Ni (110) surfaces are more susceptible to CH 4 decomposition to carbon than
the Ni … CO 2 dissociation results in dissolution into Ni-forming Ni 3 C and this was proposed to …