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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

Homcam: A Wireless 360-Degree Wearable Streaming Camera For Remote Situational Awareness, Brian Peck, Stephen Gilbert, Eliot Winer, Robert Ray Sep 2016

Homcam: A Wireless 360-Degree Wearable Streaming Camera For Remote Situational Awareness, Brian Peck, Stephen Gilbert, Eliot Winer, Robert Ray

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

The growth of mobile and wearable technologies has enabled a host of new applications, including remote situational awareness, in which a device worn by a remote partner can simulate being present in the remote location for an observer. We illustrate this idea by constructing the HomCam, a helmet-based omnidirectional video system that gives an observer the 360-degree perspective of a remote wearer. To our knowledge, the HomCam was the first wearable system that enabled real-time streaming of 360-degree video to a remote location built from commercial-of-the-shelf hardware. This paper describes related efforts, the HomCam prototype, its visual display, and an ...


Influence Of Spatial Variations Of Railroad Track Stiffness And Material Inclusions On Fatigue Life, Celestin Nkundineza Jan 2015

Influence Of Spatial Variations Of Railroad Track Stiffness And Material Inclusions On Fatigue Life, Celestin Nkundineza

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Railroad transportation is very important for economic growth and effective maintenance is one critical factor for its economic sustainability. The high repetitive forces from a moving railcar induce cyclic stresses that lead to rail bending and potential deterioration due to fatigue crack initiation and propagation. Previous research for prediction of fatigue life has been done under the assumptions of a uniform track bed and a homogeneous rail. However the spatial variation of the track stiffness is expected to increase the maximum stresses in the rail and, therefore, accelerate the fatigue process. The research described in this dissertation is focused on ...


Time-Optimal Path Planning For Automated Grain Carts, Mengzhe Zhang, Sourabh Bhattacharya Jan 2015

Time-Optimal Path Planning For Automated Grain Carts, Mengzhe Zhang, Sourabh Bhattacharya

Mechanical Engineering Conference Presentations, Papers, and Proceedings

In this paper, we address a motion planning problem for an autonomous agricultural vehicle modeled as tractor-trailer system. We first present a numerical approach and a primitive-based approach for computing the time-optimal path based on given static initial and goal configurations. In the former approach, we define a value function for the entire state space. The value function is consistent with the time to reach goal configuration, and it is finally used to compute the optimal trajectory. In the latter approach, based on the regular and singular primitives, we present an algorithm to construct such primitives and derive the final ...


Testing The Fuel Efficiency Of Tractors With Continuously Variable And Standard Geared Transmissions, Christopher N. Howard, Michael F. Kocher, Roger M. Hoy, Erin E. Blankenship Jan 2013

Testing The Fuel Efficiency Of Tractors With Continuously Variable And Standard Geared Transmissions, Christopher N. Howard, Michael F. Kocher, Roger M. Hoy, Erin E. Blankenship

Biological Systems Engineering: Papers and Publications

A John Deere 8295R IVT tractor with a continuously variable transmission (CVT) and a John Deere 8295R PowerShift (PST) tractor with a standard geared transmission (GT) were tested for fuel consumption at three different travel speeds with six different load levels applied per speed. The JD 8295R PST tractor was tested both at full throttle (FT) and shifted up two gears and throttled back (SUTB) to achieve the same travel speed as at full throttle. For each travel speed with each transmission mode, fuel consumption was determined to be linearly related to drawbar power. Linear regression analyses were performed, and ...


Sustainability For Die Manufacturing: Comparative Study Of Wedm And Milling, Matthew S. Kalus Dec 2012

Sustainability For Die Manufacturing: Comparative Study Of Wedm And Milling, Matthew S. Kalus

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Sustainability is more important in today's culture due to the increasing demand for a more eco-friendly society. Concentrations in minimizing and reducing environmental impacts, energy and natural resources have been forthcoming in industry. The tool, mold and die industries are the most well known industries that machine harder materials using mills and WEDM. The objective of this thesis was to compare the sustainability differences in both of these machines utilizing the accepted standards for evaluating the manufacturing process performance for sustainability. These standards include the evaluation of the process parameters, raw materials, power, tools and fluids which all contribute ...


A Digital Hydraulic Valve, Actuated Using A Piezoelectric Linear Motor, Brian C. Bevill Jul 2011

A Digital Hydraulic Valve, Actuated Using A Piezoelectric Linear Motor, Brian C. Bevill

Purdue Polytechnic Directed Projects

Proportional control in hydraulics is widely utilized. The most widely used current types of proportional valves utilize solenoid technology. While this technology has been around for decades and has been proven an effective means of control, there is always a demand for improved performance of advancing technologies. Integrating piezoelectric devices as a means to control hydraulic systems helps advance control for hydraulic systems.

Piezoelectric stack devices have been used to control hydraulic systems with success. Advantages of these stacks include being relatively small with a high power to weight ratio, using less energy than solenoid operations, and being fast acting ...


Inexpensive Ultrahigh Vacuum Heatable/Coolable Xyz-Rotary Motion Sample Manipulator, Susan L. Peterson, Kirk H. Schulz, Carl A. Schulz, John M. Vohs Jan 1995

Inexpensive Ultrahigh Vacuum Heatable/Coolable Xyz-Rotary Motion Sample Manipulator, Susan L. Peterson, Kirk H. Schulz, Carl A. Schulz, John M. Vohs

Departmental Papers (CBE)

A simple design for a heatable, coolable, rotable sample manipulator, suitable for ultrahigh vacuum (UHV) applications, is described. Highlights of the design include using a combination power/thermocouple feedthrough for heating, cooling, and temperature measurement; and the use of primarily "off-the-shelf" components available from most UHV components vendors. The described manipulator is capable of sample cooling to ~100 K, sample heating to above 900 K, while maintaining 360o of rotary motion, ~1 in. of x and y motion, and 2 in. of z motion. The apparatus can be assembled for approximately $5500 (all new parts) and uses about 3 ...


Operating Instructions For Cockshutt 30 Tractor, Tractor Museum Jan 1947

Operating Instructions For Cockshutt 30 Tractor, Tractor Museum

Tractor Maintenance Repair and Restoration

Index to General Operations

AIR CLEANER BATTERY BRAKES BELT PULLEY SHIFT CARBURETOR CARE AND OPERATION COOLING AND OVERHEATING CREEPER GEAR SHIFT CLUTCH CHASSIS DRAINING SYSTEM DISTRIBUTOR DRAW BAR PULL ENGINE SPECIFICATIONS SPARK PLUGS STEERING GEAR STORING AND HOUSING STARTING ENGINE AFTER STORAGE TRANSMISSION AND DIFFERENTIAL TIRES THERMOSTAT VALVE TAPPETS WEIGHTS REAR WHEELS INDEX ' T O ILLUSTRATIONS

Illustrations Anti-freeze chart Air cleaner Belt pulley Cross-section view Carburetor Distributor adjustment Distributor wiring Fan belt tension Generator Gear shift lever Instrument panel and controls

Lubrication chart Oil filter Rear wheel tread Steering gear 30 Safety Top view of transmission Valve adjustment Wiring diagram ...