Mechanical Engineering Commons^™

Burning Characteristics Of Pulverized Coal Within Blast Furnace Raceway At Various Injection Operations And Ways Of Enriched Oxygen., Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.

Disassembly Sequence Evaluation: A User Study Leveraging Immersive Computing Technologies, Leif P. Berg, Sara Behdad, Judy M. Vance, Deborah Thurston

Mechanical Engineering Publications and Papers

As interest in product recovery, reuse, and recycling rises, planning and evaluating disassembly sequences are becoming increasingly important. The manner in which a product can be taken apart strongly influences end-of-life (EOL) operations and costs. Early disassembly planning can also inform non-EOL processes including repair and routine maintenance. Recently, research has concentrated on creating optimization algorithms which automatically generate disassembly sequences. These algorithms often require data that are unavailable or estimated with high uncertainty. Furthermore, industries often employ CAD modeling software to evaluate disassembly sequences during the design stage. The combination of these methods result in mathematically generated solutions, however ...

A Contribution Toward Better Understanding Of Overbanking Tendency In Fixed-Wing Aircraft, Nihad E. Daidzic

Journal of Aviation Technology and Engineering

The phenomenon of overbanking tendency for a rigid-body, fixed-wing aircraft is investigated. Overbanking tendency is defined as a spontaneous, unbalanced rolling moment that keeps increasing an airplane’s bank angle in steep turns and must be arrested by opposite aileron action. As stated by the Federal Aviation Administration, the overbanking tendency may lead to a loss of control, especially in instrument meteorological conditions. It was found in this study that the speed differential over wing halves in horizontal turns indeed creates a rolling moment that achieves maximum values for bank angles between 45 and 55 degrees. However, this induced rolling ...

Methods For Analyzing The Structure Of Creases In Heat Sealed Paperboard Packages, Ville Leminen, Petri Mäkelä, Panu Tanninen, Juha Varis

Journal of Applied Packaging Research

Press-forming of paperboard has been previously studied by several authors. A point of interest regarding gas tight heat sealing of the packages are the creases in the package. The objective of this article was to study and compare different microscopic imaging methods to research an optimal imaging method for the formation of creases in the press-forming process of polymer coated paperboard trays. The studied methods were: Scanning electrode microscopy (SEM), X-ray Microtomography, Optical light microscopy and Polarized light microscopy. All four tested methods delivered clear images. Casting of the samples in an acrylic resin and light microscope imaging was found ...

Fractographical Investigation Of The Delamination Under Fatigue Using Laser Confocal Electron Microscope, Innovative Research Publications Irp India, Rafiullah Khan,Sakhi Jan, Sajjad Ahmad,,Muhammad Amjadsaeed Badshah, Mutahir Ahmad

Innovative Research Publications IRP India

In this paper fracture surface of the fatigue delamination have been investigated. Fatigue delamination tests were performed on the crabon/epoxy under different stress ratios. Samples were cut from the DCB specimens and analyzed in Laser Confocal Scanning Microscope. The analysis was used to measure the roughness values. Different fractographic features observed in the study are discussed.

Analysis Of Transient Natural Convection Flow Past An Accelerated Infinite Vertical Plate, Innovative Research Publications Irp India, Kaprawi S.

Innovative Research Publications IRP India

This work describes a vertical hot plate moves with acceleration and with variation wall temperature. The temperatures of the plate decrease with the increase of velocity of the plate. The temperature and velocity are given by the governing equations. The dimensionless equations of the problem have been solved numerically by the finite difference method. The temperature and the velocity profiles against several parameters like Prandtl Number, Grashoft number and time are presented. The results show that the temperature and velocity profiles are significantly influenced by Prandtl and Grashoft number.

Review Of Composite Asymmetric Spur Gear, Innovative Research Publications Irp India, Sandeep C. Dhaduti, S. G. Sarganachari

Innovative Research Publications IRP India

Gears made from composite materials are widely used in many power and motion transmission applications. Due to lower weight to stiffness ratio, composite gears may be replaced by conventional material gears in power transmission systems. Design of gears with asymmetric teeth enables to increase load capacity, reduce weight, size and vibration level. This article includes a summary of asymmetric gear design parameters, new developments of asymmetric spur gear and their application in various fields of engineering applications.X

Microstructure And Mechanical Properties Of Multipass Friction Stir Processed Aluminum Silicon Carbide Metal Matrix, Innovative Research Publications Irp India, V V Murali Krishna G, K.S Atyanarayana

Innovative Research Publications IRP India

In this study, SiC particles were incorporated by using Friction Stir Processing (FSP) into the 6351 aluminium alloy to form particulate composite materials. Sampels were subjected to constant rotational and traverse speeds of the FSP tool with and without SiC reinforcements. Microstructural observations were carried out by employing optical microscopy of the modifiedsurfaces. Mechanical properties were evaluated by tensile test on UTM. For the 100% overlapping, No.of passes caused grain modification in the processed zone. The tensile test results indicate an improvement of strength and Microhardness for Single Pass FSP samples and a reduction in the strength of FSP ...

Synthesis And Characterization Of Nano-Copper-Powder Based Magnetorheological Fluids For Brake, Innovative Research Publications Irp India, Chiranjit Sarkar, Harish Hirani

Innovative Research Publications IRP India

Magnetorheological (MR) fluids can be used as brake friction materials [1, 2]. During braking, kinetic energy of machines gets converted into heat and shear thinning of MR fluid due to increase in temperature occurs which in turn reduces the braking effect. To lessen the effect of heat generation on MR fluids due to heat, synthesis of magnetorheological fluid using nano-copper-powder has been proposed. To explore the feasibility of incorporating copper powder, four carbonyl iron (CI) powder based MR fluids (without any copper powder, with 0.25% weight, 0.5% weight and 0.75% weight copper powder) have been synthesized. Yield ...

The Development Of Advanced Control Laboratories, Matthew Randall Winter

Graduate Theses - Mechanical Engineering

In this thesis, a series of advanced control labs have been developed for use in the senior/graduate-level advanced controls course. Advanced controls laboratories are non-existent at many institutions, and since hands on laboratories are such an integral part of engineering education it was decided to develop a few. The goal of these laboratories is to reinforce some of the more advanced topics in control theory. Topics of the laboratories include Parameter Identification, Eigenstructure Assignment, Linear Optimal Regulators and Linear Quadratic Gaussian Control with Loop Transfer Recovery. These laboratories are carried out on the Educational Control Products Model 210 Rectilinear ...

Thermal Convection In Non-Fourier Fluids And Application To Liquid Helium Ii, Mohammad Niknami Esfahani

University of Western Ontario - Electronic Thesis and Dissertation Repository

This thesis examines different conditions for which non-Fourier effects can be significant in the flow of fluids. Non-Fourier fluids of dual-phase-lagging type (DPL) possess a relaxation time and a retardation time, reflecting the delay in the response of the heat flux and the temperature gradient with respect to one another. For non-Fourier fluids of single-phase-lagging type (SPL) the retardation time is zero. Non-Fourier fluids span a wide range of applications, including liquid helium, nanofluids and rarefied gases. The parallels between non-Fourier fluids and polymeric solutions are established.

The instability of steady natural convection of a thin layer of non-Fourier fluid ...

Advantages Of A Finite Extensible Nonlinear Elastic Potential In Lattice Boltzmann Simulations, Tai-Hsien Wu, Dewei Qi

The Hilltop Review

A new structure, generalized lattice nonlinear spring model (GLNSM), which adopts non-linear FENE-LJ potential instead of harmonic potential, has been coupled with lattice Boltzmann simulation for solving fluid-solid interaction problem. In this article, a significant work is the relationship between the GLNSM (FENE-LJ potential) and Young’s modulus has been described in detail. A validation has also been presented to prove that GLNSM is reliable.

The Development Of A Solar System Capable Of Producing 10% And 50% Of Bowling Greeen State University’S Total Electrical Requirements, Scott Subler

Scott Subler

No abstract provided.

Experimental Study Of Initial Fuel Temperature On The Burning Rates Of Kerosene Pools In Cold Environment, Innovative Research Publications Irp India, Kunal Ahuja, Alagani Harish, Vasudevan Raghavan

Innovative Research Publications IRP India

Oil spill cleanup in Arctic is usually done by in-situ burning. The fuel oil will have a very low initial temperature as well as cold boundaries. This study focuses on the variation of the mass burning rate of the fuel with varying initial temperatures of the fuel, which is kept in a metal bowl surrounded by ice. Kerosene is chosen as the fuel. The bowl diameters have been varied from 30 mm to around 50 mm. The fuel bowl is kept surrounded in an ice bath and is ignited after it attains a particular temperature. The initial temperature of the ...

Optimization Of Bed Material Consumption In A Cfbc Boiler, Innovative Research Publications Irp India, Ashish M. Pullekunnel, Manish R. Moroliya

Innovative Research Publications IRP India

The proposed Case-Study is to identify the scope of energy conservation and cost saving through optimization of bed material in a CFBC Boiler during plant start up. The study was undertaken at Abhijeet MADC Nagpur Energy Pvt. Ltd (AMNEPL), a 4X61.5 MW power plant at MIHAN, Khairy Khurd, Hingna, Nagpur. The scope of the study covers the savings achieved during light up of 4X250 TPH boiler and the effect of the application of the proposed method on the energy conservation possibilities and efficiency of boiler operation. The proposed method is an alternative to the conventional boiler light up of ...

Operating Principles, Common Questions, And Performance Data For An Atmospheric Driven Atmos Clock, David Moline, John Wagner

Publications

The elegance of the Atmos clock and the curiosity of mankind in self-operational mechanical systems have propelled this time device into our collective desire for more knowledge. The search for a self-winding time piece, based on normal atmospheric fluctuations, was pursued for centuries by horologists with the well-known clock proposed by J. L. Reutter and commercialized by Jaeger LeCoultre. This clock has generated numerous discussions throughout the years as noted in past Bulletin articles and other correspondences within the time keeping community. In this paper, the operating principles of the Atmos clock will be reviewed using fundamental science and engineering ...

Design Of Customized Rehabilitation Devices And Bench Testing System, Xueyu Gao

Mechanical Engineering Master's Theses

Off-the-shelf rehabilitation devices are currently prescribed to assist patients with stroke. Current fabrication processes of custom-made rehabilitation devices are time consuming and laborious. The process could be only performed by skilled therapists. In addition, quantitative assessment of mechanical properties is crucial in the design of customized rehabilitation devices. By the design and the real time implementation of a 3D printed hand exoskeleton and a biomimetic testbed for Ankle-Foot Orthoses (AFOs), the improved digitalized methodologies of design and bench testing systems for customized rehabilitation devices were presented in this study.

A customized 3D printed hand exoskeleton (the EXCELSIOR) was developed and ...

Openorbiter Mechanical Design: A New Approach To The Design Of A 1-U Cubesat, Benjamin Kading, Jeremy Straub, Ronald Marsh

Jeremy Straub

The OpenOrbiter Small Spacecraft Development Initiative is working to create a set of designs and implementation instructions for a 1-U CubeSat, called the Open Prototype for Educational NanoSats. These designs target a total parts cost of below USD $5,000. This design will be made publically available to facilitate its use by others, with or without modification. A ‘side slotted’ CubeSat design (where main circuit boards are placed in slots between the rails on the outside) has been developed for OpenOrbiter. This paper discusses the design choices that were made during the mechanical structure development of the OpenOrbiter CubeSat design ...

Design, Development And Implementation Of Smart Cycling Kits For Rehabilitation Applications And End-Users, Qingchao Kong

Mechanical Engineering Master's Theses

There are three topics included: 1. VRACK study and improvement, 2.Smart Bike; 3. iVRACK design.

Topic 1: VRACK study and improvement

Ankle impairment and lower limb asymmetries in strength and coordination are common symptoms for individuals with selected musculoskeletal and neurological impairments. The virtual reality augmented cycling kit (VRACK) was designed as a compact mechatronics system and a compatible module that can be mounted on most bicycles to convert them to virtual reality (VR) cycles for lower limb and mobility rehabilitation. Novel hardware components with sensors instrument monitor physiological and biomechanical parameters of participants by measuring interaction forces and ...

Gait Cycle Analysis And Mechanical Design Of Ankle Foot Orthosis Testbed, Chengbo Yin

Mechanical Engineering Master's Theses

Ankle Foot Orthosis (AFO) is a type of ankle brace for providing assistant force support on the patient's ankle. The research was focused on the structure redesigning, gait cycle analysis and Rapid Prototyping-Ankle Foot Orthosis testbed design.

It is tried to provide a. new assembling AFO design, so that lower cost along with a standard process are achieved in order to build a customized AFO. The formal AFO structure was an integrated design. The integrated design was separated into three parts, a. customized base, a. function bar and a standard cuff. The customized base was built by rapid-prototyping method ...