An Artificial Immune Algorithm For Ergonomic Product Classification Using Anthropometric Measurements, 2016 La Salle University
An Artificial Immune Algorithm For Ergonomic Product Classification Using Anthropometric Measurements, Madjid Tavana, Mohammad Reza Kazemi, Amin Vafadarnikjoo, Mohammadsadegh Mobin
James M. Resume.Doc, 2016 University of Akron
James M. Resume.Doc, Jim Maskil
No abstract provided.
A Bayesian-Influence Model For Error Probability Analysis Of Combine Operations In Harvesting, 2016 Iowa State University
A Bayesian-Influence Model For Error Probability Analysis Of Combine Operations In Harvesting, Yu Du, Michael Dorneich, Brian L. Steward, Cameron A. Mackenzie
Brian L. Steward
Harvesting is one of the most important agricultural operations because it captures the value from the entire cropping season. In modern agriculture, grain harvesting has been mechanized through the combine harvester. A combine harvester enables highly productive crop harvesting. Combine harvesting performance depends on the highly variable skill of combine operators and associated operator error. An approach was developed to analyze the risk of the combine harvesting operation as it relates to operator error. Specifically, a risk analysis model was built based on a task analysis from operator interviews and estimates of the probability of operator error. This paper employs ...
Fatigue Analysis Of The Welded Region In The Automotive Torsion Beam Rear Suspension System, 2016 China FAW Corporation Limited Tianjin R&D Center
Fatigue Analysis Of The Welded Region In The Automotive Torsion Beam Rear Suspension System, Nan Zhan, Xiaochuan Zhang
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
An Ontological Model And Method For Obsolescence Resolution And Management, 2016 Iowa State University
An Ontological Model And Method For Obsolescence Resolution And Management, Liyu Zheng, Janis P. Terpenny, Nihal Orfi
Janis P. Terpenny
With today's rapid advancement in technologies, commercial high tech components are rendered obsolete more frequently. Such components are often parts of long-life products. Hence, technology obsolescence can make design changes for systems expensive and result in high life-cycle costs. Several tools have been developed to support obsolescence management. While these tools provide benefits and serve as focal points for information related to components, these tools are limited in many respects due to data conflicts, incompleteness and inconsistency. Further, the lack of communication between these tools compounds the limitations making the proactive management of obsolescence even more challenging. This paper ...
Engineering Design Education - Core Competencies, 2016 Virginia Polytechnic Institute and State University
Engineering Design Education - Core Competencies, Richard M. Goff, Janis P. Terpenny
Janis P. Terpenny
In the past, it was very common for students to come to the university to study engineering with basic design and build skills acquired through hands-on experiences acquired through play with friends, work on farms, work on cars and general tinkering. Engineering students were predominantly white males and eager to dive into design projects that could call upon skills in spatial reasoning, problem solving, working with others, and more. Currently, students who enter the university to study engineering are more diverse in race, gender, and background. The pervasiveness of computers, computer gaming, and social networking has also shifted the competencies ...
Methodology For Assessing Measurement Error For Casting Surface Inspection, 2016 Iowa State University
Methodology For Assessing Measurement Error For Casting Surface Inspection, G. Daricilar, Frank E. Peters
Frank E. Peters
Visual assessment of objects is critical to many fields including metalcasting. While the output for such a task is often a simple attribute, theproblem studied here is for inspection tasks requiring an output that defines shape, size and location of anomalous areas, which are random and are not defined a priori. This paper defines a methodology to quantify the amount of repeatability and reproducibility variation. The application of the methodology for the visual surface assessment of steel castings reveals significant repeatability and reproducibility error. The work presented here is the impetus for current efforts that are defining the capabilities of ...
Developing Students’ Understanding Of Global Issues Through Lean Manufacturing, 2016 Iowa State University
Developing Students’ Understanding Of Global Issues Through Lean Manufacturing, Frank E. Peters, Leslie Potter, Kyung J. Min
Frank E. Peters
While traditional international exchange programs provide valuable experience for engineering students, they are neither within reach nor practical for all students. An innovative course was developed and executed Spring 2007 to provide engineering students with an intense international experience. This course is aimed at strengthening ABET outcome item (h) [the broad education necessary to understand the impact of engineering solutions in a global, economic, environmental, and societal context]. Additionally, the course provides students the opportunity to practice contemporary, industry-relevant skills by exploring lean manufacturing, including tools, philosophies, and current literature. In the first offering of the course, fifteen students participated ...
Effect Of Mould Expansion On Pattern Allowances In Sand Casting Of Steel, 2016 Iowa State University
Effect Of Mould Expansion On Pattern Allowances In Sand Casting Of Steel, Frank E. Peters, Robert Voigt, Shouzhu Ou, Christoph Beckermann
Frank E. Peters
For steel castings produced in sand moulds, the expansion of the sand and have a significant impact on the final size and shape of the casting. Experiments are conducted using a cylindrical casting to study this effect for different sands (silica and zircon) and different sand binder systems (phenolic urethane and sodium silicate). The type of sand has a significant effect on the final casting dimensions, in particular because the expansion of silica sand can be irreversible. The sand expansion effect is enhanced by the presence of sodium silicate binder. In addition, the size of the core, which in the ...
Visual Inspection Of Casting Surfaces, 2016 Iowa State University
Visual Inspection Of Casting Surfaces, Frank E. Peters, Richard T. Stone, Kristopher Patrick Watts, Peihan Zhong, Alexander John Clemons
Frank E. Peters
Visual inspection of casting surfaces is a critical processing step in the metalcasting process. Measurement error can be significant, causing overprocessing or poor quality received by the customer. Many factors affect the human operator's ability to effectively inspect castings. Cognitive ability is one such factor, which can be identified through a simple test. Rastering training was shown to improve the percentage of casting surface which gets inspected. Discrimination between acceptable and unacceptable surfaces continues to be problematic.
Understanding Student Pathways In Context-Rich Problems, 2016 Oklahoma State University - Main Campus
Understanding Student Pathways In Context-Rich Problems, Pavlo Antonenko, John Jackman, Piyamart Kumsaikaew, Rahul R. Marathe, Dale S. Niederhauser, Craig A. Ogilvie, Sarah M. Ryan
John K. Jackman
In this paper we investigate the ways that students' problem-solving behaviors evolve when solving multi-faceted, context-rich problems within a structured, computer-based learning environment. During the semester, groups of two or three students worked on several problems that required drawing on more than one concept and, hence, could not be readily solved with simple "plug-and-chug" strategies. The problems were presented to students in a data-rich, online problem-solving environment that tracked which information items were selected by students as they attempted to solve the problem. The students also completed a variety of tasks, like entering an initial qualitative analysis into an online ...
Multi-Agent Distributed Optimization Via Inexact Consensus Admm, 2016 National Taiwan University of Science and Technology
Multi-Agent Distributed Optimization Via Inexact Consensus Admm, Tsung-Hui Chang, Mingyi Hong, Xiangfeng Wang
Multi-agent distributed consensus optimization problems arise in many signal processing applications. Recently, the alternating direction method of multipliers (ADMM) has been used for solving this family of problems. ADMM based distributed optimization method is shown to have faster convergence rate compared with classic methods based on consensus subgradient, but can be computationally expensive, especially for problems with complicated structures or large dimensions. In this paper, we propose lowcomplexity algorithms that can reduce the overall computational cost of consensus ADMM by an order of magnitude for certain large-scale problems. Central to the proposed algorithms is the use of an inexact step ...
The Team Multiple Errands Test: A Platform To Evaluate Distributed Teams, 2016 Iowa State University
The Team Multiple Errands Test: A Platform To Evaluate Distributed Teams, Jamiahus Walton, Desmond Carletus Bonner, Kelsey Walker, Samantha Mater, Michael C. Dorneich, Stephen B. Gilbert, Robert West
Stephen B. Gilbert
Teams have the ability to achieve goals that are unobtainable by individuals alone. However, there is little agreement on a standard model for researching the performance of distributed teams. Initial pilot results suggest that the Multiple Errands Test (MET), when adapted to a team in a virtual environment, is a platform for evaluating the impact of feedback characteristics. To demonstrate the potential of the Team MET as a platform for future team research in the broader CSCW community, an example study is described in which team members are given feedback in one of four conditions: individual private, team private, individual ...
Evaluation Of Designer Feedback Systems In Design For Manufacturability, 2016 Iowa State University
Evaluation Of Designer Feedback Systems In Design For Manufacturability, Prashant Barnawal, Michael C. Dorneich, Frank E. Peters, Matthew C. Frank
Matthew C. Frank
The research study introduces a new designer feedback tool called Three Dimensional Integrated Feedback (3DIF) tool to convey manufacturability analysis results early in the conceptual design phase. The study evaluates and compares different modalities of manufacturability feedback given to de-sign engineers. The conceptual design stage is critical in deter-mining the feasibility of the whole production process. Providing designers with early suggestions and feedback about the manu-facturability of product designs will help to improve their design and save time and cost to manufacture. Feedback given to the design engineers could be in any form text, 2D markups, 3D data or verbal ...
Techno-Economic Analysis Of Biobased Chemicals Production Via Integrated Catalytic Processing, 2016 Iowa State University
Techno-Economic Analysis Of Biobased Chemicals Production Via Integrated Catalytic Processing, Tristan Brown, Yanan Zhang, Guiping Hu, Robert C. Brown
We evaluate the economic feasibility of a fast pyrolysis facility producing biobased commodity chemicals based on various manifestations of Integrated Catalytic Processing (ICP). Five scenarios are analyzed: fluid catalytic cracking (FCC) of whole pyrolysis oil (WPO); one-stage hydrotreating and FCC of WPO; FCC of the aqueous phase of pyrolysis oil (APPO); one-stage hydrotreating and FCC of the APPO; and two-stage hydrotreating followed by FCC of the APPO.
We calculate the internal rate of return (IRR) for each scenario as functions of the costs of feedstock, hydrogen, and catalyst, and projected revenues for the facility. The assumed feedstock cost is $83 ...
Technoeconomic Sensitivity Of Biobased Hydrocarbon Production Via Fast Pyrolysis To Government Incentive Programs, Tristan Brown, Guiping Hu
Fast pyrolysis and upgrading is a promising thermochemical pathway that produces pyrolysis oil that can be upgraded via hydroprocessing into hydrocarbon-based transportation fuels (drop-in biofuels). The internal rate of return (IRR) of a fast pyrolysis and upgrading facility is a function of feedstock cost and projected revenues. We calculate the IRR of a fast pyrolysis and upgrading facility under six different policy scenarios: (1)a baseline scenario in which the facility receives no government support; (2)a scenario in which cap-and-trade (H.R. 2454) is enacted with both carbon price and offsets; (3)a scenario in which the Volumetric Ethanol ...
Potential Competition For Biomass Between Biopower And Biofuel Under Rps And Rfs2, 2016 Iowa State University
Potential Competition For Biomass Between Biopower And Biofuel Under Rps And Rfs2, Mohammad Rahdar, Lizhi Wang, Guiping Hu
Driven by Renewable Portfolio Standards and Renewable Fuel Standard, biopower generation and biofuel production will increasingly compete for the same biomass resource over the next two decades. We use a linear programming model to study this competition as well as other interactions between the two policies. Our model describes the U.S. renewable energy portfolio by explicitly accounting for all major renewable energy resources, unique resource availability and policy requirements in all 50 states and Washington, DC, and policy deadlines set by all RPS and RFS2 policies within a 2013-2035 modeling horizon. Our modeling results were used to address five ...
Supply Chain Design Under Uncertainty For Advanced Biofuel Production Based On Bio-Oil Gasification, 2016 Iowa State University
Supply Chain Design Under Uncertainty For Advanced Biofuel Production Based On Bio-Oil Gasification, Qi Li, Guiping Hu
An advanced biofuels supply chain is proposed to reduce biomass transportation costs and take advantage of the economics of scale for a gasification facility. In this supply chain, biomass is converted to bio-oil at widely distributed small-scale fast pyrolysis plants, and after bio-oil gasification, the syngas is upgraded to transportation fuels at a centralized biorefinery. A two-stage stochastic programming is formulated to maximize biofuel producers' annual profit considering uncertainties in the supply chain for this pathway. The first stage makes the capital investment decisions including the locations and capacities of the decentralized fast pyrolysis plants as well as the centralized ...
Techno-Economic Analysis Of Advanced Biofuel Production Based On Bio-Oil Gasification, 2016 Iowa State University
Techno-Economic Analysis Of Advanced Biofuel Production Based On Bio-Oil Gasification, Qi Li, Yanan Zhang, Guiping Hu
This paper evaluates the economic feasibility of a hybrid production pathway combining fast pyrolysis and bio-oil gasification. The conversion process is simulated with Aspen Plus® for a 2000 t d-1 facility. Techno-economic analysis of this fast pyrolysis and bio-oil gasification pathway has been conducted to assess the economic feasibility. A total capital investment of $438 million has been estimated and the minimum fuel selling price (MSP) is $5.6 per gallon of gasoline equivalent. The sensitivity analysis shows that the MSP is most sensitive to internal rate of return, fuel yield, biomass feedstock cost, and fixed capital investment. Monte-Carlo simulation ...
Market Competition And Social Welfare Analysis For E10 And E85 With A 1 Game Theory Model, 2016 Iowa State University
Market Competition And Social Welfare Analysis For E10 And E85 With A 1 Game Theory Model, Minwen Yang, Guiping Hu
With the increasing concerns about the petroleum reserve, and the global warming, people have been looking for renewable and environmental friendly energy sources to supplement and replace fossil fuels. Ethanol has been an appropriate substitute to fossil fuels. Currently, E10 and E85 are two of the main transportation fuels with ethanol and they are competing in the market. This study investigates the competition between E10 and E85 with an oligopoly Cournot model and derives three indicators from the equilibrium to measure the performance of the market: E85's market share, E85 price premium which indicate the consumers' additional willingness to ...