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IIE Annual Conference and Expo 2015

作者： Da Silveira, Willian Giordani De Lima, Edson Pinheiro Deschamps, Fernando Da Costa, Sergio E. Gouvea Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Parana Brazil Federal University of Technology Parana Brazil Deparment of Mechanical Engineering Federal University of Parana Curitiba Brazil

ISBN: (纸本)9780983762447

Hoshin Kanri is a model for strategy management that was conceived in Japan and is usually applied in the context of Total Quality Management (TQM) and lean implementations. This model is recognized for its strength to build the link between business strategy and business execution. The limited universe of empirical research about Hoshin Kanri, in addition to the resurgence of interest in it amongst western managers, who may face cultural challenges in Hoshin Kanri implementation, leads to the necessity of systematizing a set of universally applicable guiding principles for Hoshin Kanri initiatives. An initial model for guidelines was developed in a previous work through a systematic literature review supported by content analysis techniques. However, in order to develop guidelines that are as relevant as possible for the context of companies, the model must be refined through an empirical approach that takes into account practical experiences from different experts. This work fulfills this through a systematic approach by applying expert interviews for the successive refinement of the guidelines model. The results comprise the refined and confirmed model of guidelines regarding the process and the context of Hoshin Kanri and the discussion about conceptual foundations of the model.

关键词： Total quality management

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programmable skins based on core-shell microsphere/nanotube/polymer composites

Programmable skins based on core-shell microsphere/nanotube/...

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2015 MRS Spring Meeting

作者： Panchapakesan, Balaji Onal, Cagdas Loomis, James Systems Laboratory Department of Mechanical Engineering Worcester Polytechnic Institute WorcesterMA01609 United States Soft Robotics Laboratory Department of Mechanical Engineering Robotics Engineering Program Worcester Polytechnic Institute WorcesterMA01609 United States Department of Mechanical Engineering Massachusetts Institute of Technology CambridgeMA02139 United States

ISBN: (纸本)9781510826533

In this paper, we describe unique thermally responsive polymer system based on nanotube-elastomers dispersed with core-shell expanding microspheres (phase-change material). Upon thermal or infrared stimuli, liquid hydrocarbon cores encapsulated within the microspheres vaporize, expanding the surrounding shells and stretching the matrix. Microsphere transfonnation resulted in visible dimensional changes associated with macroscopic volume increase (>500%), reduction in density (>80%), and increase in elastic modulus (>675%). Additionally, electrically conductive nanotubes allowed for expansion dependent electrical responses. We present our new findings on expansion dependent superhydrophobicity in these materials and present some outlook and comparison of our stimuli responsive polymers with other material systems for future origami based applications. © Materials Research Society 2015.

关键词： Microspheres

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Solving nonlinear diffusive problems in buildings by means of a Spectral Reduced-Order Model

arXiv

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arXiv 2017年

作者： Gasparin, Suelen Berger, Julien Dutykh, Denys Mendes, Nathan LAMA CNRS Université Savoie Mont Blanc Campus Scientifique Le Bourget-du-Lac CedexF-73376 France Thermal Systems Laboratory Mechanical Engineering Graduate Program Pontifical Catholic University of Paraná Rua Imaculada Conceicaõ 1155 Curitiba-Paraná Brazil LOCIE UMR CNRS Université Savoie Mont Blanc Campus Scientifique Le Bourget-du-Lac CedexF-73376 France Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS LAMA Chambéry73000 France LAMA CNRS Université Savoie Mont Blanc Campus Scientifique Le Bourget-du-Lac CedexF-73376 France

This paper proposes the use of a Spectral method to simulate diffusive moisture transfer through porous materials as a Reduced-Order Model (ROM). The Spectral approach is an a priori method assuming a separated representation of the solution. The method is compared with both classical Euler implicit and Crank-Nicolson schemes, considered as large original models. Their performance-in terms of accuracy, complexity reduction and CPU time reduction-are discussed for linear and nonlinear cases of moisture diffusive transfer through single and multi-layered one-dimensional domains, considering highly moisture-dependent properties. Results show that the Spectral reducedorder model approach enables to simulate accurately the field of interest. Furthermore, numerical gains become particularly interesting for nonlinear cases since the proposed method can drastically reduce the computer run time, by a factor of 100 , when compared to the traditional Crank-Nicolson scheme for one-dimensional applications. Copyright © 2017, The Authors. All rights reserved.

关键词： Spectroscopy

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Study on Collision Between Two Ships Using Selected Parameters in Collision Simulation

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Journal of Marine Science and Application 2016年第1期15卷 63-72页

作者： Dong-Myung Bae Aditya Rio Prabowo Bo Cao Ahmad Fauzan Zakki Gunawan Dwi Haryadi Department of Naval Architecture and Marine Systems Engineering Pukyong National University Nam-gu Daeyon Busan 48513 Republic of Korea Interdisciplinary Program of Marine Convergence Design Pulkyong National University Nam-gu Daeyon Busan 48513 Republic of Korea Department of Mechanical Engineering Diponegoro University Semarang Central Java 50275 Republic of Indonesia Department of Naval Architecture Diponegoro University Semarang Central Java 50275 Republic of Indonesia

In the present analysis, several parameters used in a numerical simulation are investigated in an integrated study to obtain their influence on the process and results of this simulation. The parameters studied are element formulation, friction coefficient, and material model. Numerical simulations using the non-linear finite element method are conducted to produce virtual experimental data for several collision scenarios. Pattern and size damages caused by collision in a real accident case are assumed as real experimental data, and these are used to validate the method. The element model study performed indicates that the Belytschko-Tsay element formulation should be recommended for use in virtual experiments. It is recommended that the real value of the friction coefficient for materials involved is applied in simulations. For the study of the material model, the application of materials with high yield strength is recommended for use in the side hull structure.

关键词： ship collision collision accident non-linear finite element collision parameter hull structure

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Manufacturing strategy design process improvement through enterprise engineering recommendations

Manufacturing strategy design process improvement through en...

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IIE Annual Conference and Expo 2015

作者： Moura, Louisi Francis De Lima, Edson Pinheiro Deschamps, Fernando Da Costa, Sergio E. Gouvea Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil Federal University of Technology - Parana Curitiba Brazil Department of Mechanical Engineering Federal University of Parana Curitiba Brazil

ISBN: (纸本)9780983762447

The manufacturing strategy design process is crucial for an organization's competitiveness because of its role in bridging the gap between strategy and operations. The dynamic and ever-changing nature of today's businesses makes this a difficult task, extremely influenced by internal and external factors. There is a need for a method that can provide the manufacturing function new attributes for its strategy development as a dynamic model that operates in a complex environment. This work addresses this concern by analyzing a well-established framework for manufacturing strategy design composed of six parts and based on a process approach. The analysis is carried out by considering the alignment of the aims of each of the parts of this framework to a set of enterprise engineering guidelines, that determine how well-structured the process from this framework is. Guidelines verify process formalization, process organizational structure, process synchronization, explicit considerations of performance expectations, exception handling, and incorporation of change and improvement mechanisms. The study reveals that there are some gaps in the process regarding the guidelines and further, suggests improvements in it to fill these gaps. The paper develops new aims to the analyzed manufacturing strategy design framework and shows its relevance to the process. This represents advancement to operations management by proposing a reviewed view of the manufacturing strategy design process through an enterprise engineering perspective. Moreover, it presents a process that can contribute to organizations that intend to develop a customized model, adapted to its reality that conciliates external and internal visions, the dynamics of its environment, and the consideration of quanti-qualitatively activities that recognizes all involved stakeholders.

关键词： Competition

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Lithium‐Ion Batteries: Breathable Carbon‐Free Electrode: Black TiO2with Hierarchically Ordered Porous Structure for Stable Li–O2Battery (Adv. Energy Mater. 19/2017)

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Advanced Energy Materials 2017年第19期7卷

作者： Joonhyeon Kang Jinyoung Kim Sangheon Lee Sungun Wi Chunjoong Kim Seungmin Hyun Seunghoon Nam Yongjoon Park Byungwoo Park WCU Hybrid Materials Program Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea Department of Advanced Materials Engineering Kyonggi University Suwon Gyeonggi‐do 16227 South Korea Department of Materials Science and Engineering Chungnam National University Daejeon 34134 South Korea Department of Nano Mechanics Nano Mechanical Systems Research Division Korea Institute of Machinery and Materials (KIMM) Daejeon 34103 South Korea

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programmable Skins based on Core-Shell Microsphere/Nanotube/Polymer Composites

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MRS Online Proceedings Library 2015年第1期1800卷 1-6页

作者： Panchapakesan, Balaji Onal, Cagdas Loomis, James Small Systems Laboratory Department of Mechanical Engineering Worcester Polytechnic Institute Worcester USA Soft Robotics Laboratory Department of Mechanical Engineering Robotics Engineering Program Worcester Polytechnic Institute Worcester USA Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge USA

In this paper, we describe unique thermally responsive polymer system based on nanotube-elastomers dispersed with core-shell expanding microspheres (phase-change material). Upon thermal or infrared stimuli, liquid hydrocarbon cores encapsulated within the microspheres vaporize, expanding the surrounding shells and stretching the matrix. Microsphere transformation resulted in visible dimensional changes associated with macroscopic volume increase (>500%), reduction in density (>80%), and increase in elastic modulus (>675%). Additionally, electrically conductive nanotubes allowed for expansion dependent electrical responses. We present our new findings on expansion dependent superhydrophobicity in these materials and present some outlook and comparison of our stimuli responsive polymers with other material systems for future origami based applications.

关键词： actuator composite nanostructure

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Conformai mapping applied to the estimate of Surge and Swab geopressures

Conformai mapping applied to the estimate of Surge and Swab ...

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International Conference on Environment and Electrical engineering (EEEIC)

作者： Uyara F. Silva I. Q. Manoel Alan H. F. Silva Wesley P. Calixto Santiago Lemos Geovanne P. Furriel School of Electrical Mechanical and Computer Engineering Federal University of Goias (UFG) Goiania Brazil Experimental and Technological Research and Study Group (NExT) Federal Institute of Goias (IFG) Goiania Brazil Universidade Federal de Goias Goiania GO BR Program in Electronic Systems and Automation University of Brasilia (UnB) Brasilia Brazil Teaching and Research Center Applied to Education Federal University of Goias (UFG) Goiania Brazil

ISBN: (纸本)9781509023219

The purpose of this work is to calculate Surge and Swab pressure in oil wells with eccentricity between drill string and wellbore or casing string. Analysis of this phenomenon, in which the fluid is confined between two eccentric cylinders, are made. The conformal mapping is used to lead the eccentric domain into the concentric domain, since the usual models correspond to concentric geometries. The results of this study, using the proposed methodology, are presented and discussed.

关键词： Surges Geometry Stress Conformal mapping Mathematical model Indexes Liquids

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The palomar transient factory core-collapse supernova host-galaxy sample. I. Host-galaxy distribution functions and environment-dependence of CCSNe

arXiv

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arXiv 2020年

作者： Schulze, Steve Yaron, Ofer Sollerman, Jesper Leloudas, Giorgos Gal, Amit Wright, Angus H. Lunnan, Ragnhild Gal-Yam, Avishay Ofek, Eran O. Perley, Daniel A. Filippenko, Alexei V. Kasliwal, Mansi M. Kulkarni, Shri R. Nugent, Peter E. Quimby, Robert M. Sullivan, Mark Strothjohann, Nora Linn Arcavi, Iair Ben-Ami, Sagi Bianco, Federica Bloom, Joshua S. De, Kishalay Fraser, Morgan Fremling, Christoffer U. Horesh, Assaf Johansson, Joel Kelly, Patrick L. Knežević, Sladjana Maguire, Kate Nyholm, Anders Papadogiannakis, Seméli Petrushevska, Tanja Rubin, Adam Yan, Lin Yang, Yi Adams, Scott M. Bufano, Filomena Clubb, Kelsey I. Foley, Ryan J. Green, Yoav Harmanen, Jussi Ho, Anna Y.Q. Hook, Isobel M. Hosseinzadeh, Griffin Howell, D. Andrew Kong, Albert K.H. Kotak, Rubina Matheson, Thomas McCully, Curtis Milisavljevic, Dan Pan, Yen-Chen Poznanski, Dovi Shivvers, Isaac van Velzen, Sjoert Department of Particle Physics and Astrophysics Weizmann Institute of Science 234 Herzl St Rehovot76100 Israel Department of Astronomy Oskar Klein Centre Stockholm University AlbaNova Stockholm10691 Sweden DTU Space National Space Institute Technical University of Denmark Elektrovej 327 Kgs. LyngbyDK-2800 Denmark Department of Physics of Complex Systems Weizmann Institute of Science 234 Herzl St Rehovot76100 Israel Ruhr-Universität Bochum Astronomisches Institut German Centre for Cosmological Lensing Universitätsstr. 150 Bochum44801 Germany Astrophysics Research Institute Liverpool John Moores University 146 Brownlow Hill LiverpoolL3 5RF United Kingdom Department of Astronomy University of California BerkeleyCA94720-3411 United States Miller Senior Fellow Miller Institute for Basic Research in Science University of California BerkeleyCA94720 United States Division of Physics Mathematics and Astronomy California Institute of Technology PasadenaCA91125 United States Cahill Center for Astrophysics California Institute of Technology 1200 E. California Blvd PasadenaCA91125 United States Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 50B-4206 BerkeleyCA94720 United States Department of Astronomy / Mount Laguna Observatory San Diego State University 5500 Campanile Drive San DiegoCA92812-1221 United States University of Tokyo Institutes for Advanced Study University of Tokyo KashiwaChiba277-8583 Japan School of Physics and Astronomy University of Southampton SouthamptonSO17 1BJ United Kingdom School of Physics and Astronomy Tel Aviv University Tel Aviv69978 Israel CIFAR Azrieli Global Scholars program CIFAR Toronto Canada Department of Physics and Astronomy University of Delaware NewarkDE19716 United States Joseph R. Biden Jr. School of Public Policy and Administration University of Delaware NewarkDE19716 United States Data Science Institute University of Delaware NewarkDE19716 United States Center for Urban

Several thousand core-collapse supernovae (CCSNe) of different flavors have been discovered so far. However, identifying their progenitors has remained an outstanding open question in astrophysics. Studies of SN host galaxies have proven to be powerful in providing constraints on the progenitor populations. In this paper, we present all CCSNe detected between 2009 and 2017 by the Palomar Transient Factory. This sample includes 888 SNe of 12 distinct classes out to redshift z ≈ 1. We present the photometric properties of their host galaxies from the far-ultraviolet to the mid-infrared and model the host-galaxy spectral energy distributions to derive physical properties. The galaxy mass functions of Type Ic, Ib, IIb, II, and IIn SNe ranges from 105 to 1011.5 M☉, probing the entire mass range of star-forming galaxies down to the least-massive star-forming galaxies known. Moreover, the galaxy mass distributions are consistent with models of star-formation-weighted mass functions. Regular CCSNe are hence direct tracers of star formation. Small but notable differences exist between some of the SN classes. Type Ib/c SNe prefer galaxies with slightly higher masses (i.e., higher metallicities) and star-formation rates than Type IIb and II SNe. These differences are less pronounced than previously thought. H-poor SLSNe and SNe Ic-BL are scarce in galaxies above 1010 M☉. Their progenitors require environments with metallicities of Copyright © 2020, The Authors. All rights reserved.

关键词： Galaxies

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Influence of zirconia shot peening treatment on high-cycle fatigue properties of Ti-6Al-4V

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Zairyo/Journal of the Society of Materials Science, Japan 2016年第9期65卷 679-686页

作者： Masaki, Kiyotaka Yonakuni, Yuki Hisamori, Noriyuki Suga, Yuichiro Kobayashi, Yuji Gowa, Daisuke Dept. of Mech. Eng. Systems Okinawa College National Institute of Technology Henoko Nago905-2192 Japan Nagaoka University of Technology Kamitomioka Nagaoka940-2188 Japan Dept. of Eng. and App. Sci. Sophia Univ. Chiyoda-ku Tokyo102-8554 Japan Master's Program in Science and Technology Mechanical Engineering. Sophia Univ. Chiyoda-ku Tokyo102-8554 Japan SINTOKOGIO Ltd Ohgi-cho Toyokawa441-1205 Japan

Rotating bending loading and axial loading fatigue tests were conducted to investigate the effect of zirconia shot peening on fatigue properties of Ti-6Al-4V ELI alloy. Specimen was treated in three different shot peening conditions. As a result of the rotating bending fatigue tests, the fatigue lives of shot peened specimen were longer life than non-peened specimen. Fish eyes were observed in the fracture surface of the most shot peened specimen. And there was the facet of α-Ti or the fine granular region near the crack initiation site of the fish eye. And then, fracture morphology of shot peened specimens is different by peening conditions. From the result of axial loading fatigue tests, it becomes obvious that the facet of α-Ti was formed by action of tensile stress over 500MPa without compressive stress and that the fine granular region was formed by action of compressive stress. These results suggested that low level tensile residual stress existed at subsurface near the surface of the SP treated specimen, and the residual stress distribution decided on internal crack origin type between the facet of α-Ti or the fine granular region. © 2016 The Society of Materials Science, Japan.

关键词： Aluminum alloys

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