Search results | J. Murrey Atkins Library

Title: COMPARATIVE STUDY OF THE EFFECT OF IMPURITIES ON THE DUCTILITY OF TANTALUM AND TUNGSTEN BASED ON ATOMISTIC AND FIRST PRINCIPLES CALCULATIONS
Author: Pan, Zhiliang
Date Created: 2012
Subjects--Topical: Mechanical engineering, Materials science
Description: Tungsten and tantalum are neighbors in the Periodic Table of the Elements and, as refractory metals, both have very high melting points (tungsten: 3422oC, tantalum: 2996oC). However, the ductility of the two metals is quite different especially at...

Title: COMPARISON OF TAYLOR’S THEORY OF SPHERICAL BLAST TO A KNOWN NUMERICAL SOLUTION
Author: ROYADHIKARI, SANDIPKUMAR
Date Created: 2015
Subjects--Topical: Mechanical engineering
Description: Taylor’s blast wave theory was the first of its kind and focused on the dynamics and thermodynamics of spherical blast waves. Taylor’s model was stated as a similarity solution and determined the time-dependent blast radius, as well as the radiall...

Title: COMPRESSIVE BEHAVIOR OF BULK METALLIC GLASS UNDER DIFFERENT CONDITIONS - COUPLED EFFECT OF TEMPERATURE AND STRAIN RATE
Author: Yin, Weihua
Date Created: 2013
Subjects--Topical: Mechanical engineering, Materials science
Description: Metallic glass was rst reported in 1960 by rapid quenching of Au-Si alloys. But, due to the size limitation, this material did not attract remarkable interest until the development of bulk metallic glasses (BMGs) with specimen sizes in excess of 1...

Title: COMPUTATIONAL ANALYSIS OF THE RESPONSE OF BURIED STEEL PIPELINES DUE TO SUDDEN GROUND MOTION
Author: Gawande, Kshitij
Date Created: 2015
Subjects--Topical: Mechanical engineering
Description: Pipeline systems are the primary means by which natural gas and liquid fuels are distributed to delivery points from pumping and compressor stations. Many of these pipelines are buried underground and consequently are susceptible to sudden ground ...

Title: CONSTITUTIVE MODELING OF ALUMINUM FOAM AND FINITE ELEMENT IMPLEMENTATION FOR CRASH SIMULATIONS
Author: Bi, Jing
Date Created: 2012
Subjects--Topical: Mechanical engineering, Engineering
Description: In the past decades metallic foams have been increasingly used as filler materials in crashworthiness applications due to their relatively low cost and high capacity of energy absorption. Due to the destructive nature of crashes, studies on the pe...

Title: Calibrating slope-dependent errors in profilometry
Author: Zhou, Yue
Date Created: 2014
Subjects--Topical: Mechanical engineering, Optics
Description: Optical profilometers, such as scanning white light interferometers and confocal microscopes, provide high resolution measurements and are widely utilized in many fields for measuring surface topography. The techniques are capable of high-speed su...

Title: Chaos in Non-Euclidean Geometries Arising in Mechanics
Author: BHATTACHARYA, TAPOBRATA
Date Created: 2015
Subjects--Topical: Mechanical engineering, Mechanics, Mathematics
Description: Chaotic systems are a class of nonlinear dynamical systems that have captured the attention of mathematicians and engineers for long. Even though chaotic systems are deterministic in nature, long term prediction of behavior of such systems is diff...

Title: Characterization and In-Process Metrology of a Laser Powder Fusion Additive Manufacturing Machine
Author: Land, William
Date Created: 2015
Subjects--Topical: Mechanical engineering, Meteorology
Description: Laser powder bed fusion is one of the most commonly used processes by which metal parts are produced through an additive manufacturing approach, and it is currently the topic of extensive research. This paper describes the study of two aspects of ...

Title: Characterization of Geometric Surface Features Using Statistically Based Analytical Tools
Author: Azimi, Farzad
Date Created: 2019
Subjects--Topical: Mechanical engineering
Description: The nature and quality of a surface’s topography can play an important role in a part’s performance and expected longevity. The complexity of a surface topography means that while commonly used ISO 25178-2 height based statistical metrics are capa...

Title: Characterization of the Dynamic Performance of Machine Spindles
Author: Ganguly, Vasishta
Date Created: 2014
Subjects--Topical: Mechanical engineering
Description: Machine spindle dynamics and (axis of rotation) error motions may vary as a function of spindle speed due to gyroscopic effects, changes in bearing preload, centrifugal forces, and thermals effects. It is necessary to characterize these changes in...

Title: Circumferential Stress Analysis in Steam Header
Author: Sutharson, Sam Jotham
Date Created: 2019
Subjects--Topical: Mechanical engineering, Mechanics, Applied--Mathematics
Description: Thick-walled cylindrical steam headers are subject to varying amounts of circumferential stresses in their normal operating cycles... Analyzing the variations in the amount and the location of hoop stresses on different samples with varying materi...

Title: Computational Studies of the Effect of Moisture on Powder Bed Quality in Metal Additive Manufacturing
Author: Chakraborty, Arghajit
Date Created: 2022
Subjects--Topical: Mechanical engineering
Description: Metal additive manufacturing techniques such as SLM, and DMLS, based on the powder bed fusion (PBF) process, rely on a high-quality powder bed to minimize the formation of defects in the manufactured part. Various parameters like blade velocity, t...

Title: Computational investigations on the aerodynamics of a generic car model in proximity to a side wall
Author: Mallapragada, Srivatsa
Date Created: 2017
Subjects--Topical: Mechanical engineering, Fluid mechanics, Physics
Description: A moving road vehicle is subjected to many fluid interferences caused by a number of external agents apart from the vehicle itself. Vehicles moving in proximity to a side wall is an interesting aspect that has been little investigated in the liter...

Title: Constitutive Modeling and Dynamic Impact Analysis of Bighorn Sheep Horn
Author: Li, Zheng
Date Created: 2022
Subjects--Topical: Mechanical engineering
Description: Bighorn sheep (Ovis canadensis) is known for its giant spiral horns that can sustain impact loading at a speed up to 5.5 m/s during ramming without causing severe damage or head concussion. The bighorn sheep horn is composed of a keratin-based bio...

Title: Controlling force and displacement: Instrumentation design and application in thermal actuation and nanoindentation
Author: Fan, Chunjie
Date Created: 2021
Subjects--Topical: Mechanical engineering
Description: The motivation of this research is to build systems that precisely control displacement in the presence of external load (both linear and rotation force). To achieve this, two experimental platforms have been created. Those instruments incorporate...

Title: Correction of the post-necking True Stress-Strain data using Instrumented Nanoindentation
Author: Romero Fonseca, Ivan
Date Created: 2014
Subjects--Topical: Mechanical engineering, Materials science
Description: The study of large plastic deformations has been the focus of numerous studies particularly in the metal forming processes and fracture mechanics fields. A good understanding of the plastic flow properties of metallic alloys and the true stresses ...

Title: Cutting Mechanics and Manufacture of Optics for Imaging Applications
Author: Troutman, John
Date Created: 2016
Subjects--Topical: Mechanical engineering, Optics
Description: Ultraprecision diamond machining enables physical realization of freeform surfaces of nearly arbitrary complexity through turning and milling processes. Achievable form accuracies make diamond machining a viable alternative to conventional techniq...

Title: DATA MODELS TO SUPPORT METROLOGY
Author: Heysiattalab, Saeed
Date Created: 2017
Subjects--Topical: Mechanical engineering, Engineering
Description: The Quality Information Framework (QIF) is a project initiated in 2010 by the Dimensional Metrology Standards Consortium (DMSC is an American Standards Developing Organization) to address metrology interoperability. Specifically, the QIF supports ...

Title: DEMONSTRATION OF A CLOSED LOOP DIGITALLY ENABLED MANUFACTURING PROCESS USING ADVANCED METROLOGY TECHNIQUES
Author: Erickson, Michael
Date Created: 2018
Subjects--Topical: Mechanical engineering
Description: This thesis details the use of advanced coordinate metrology techniques to digitally enable manufacturing through the demonstration of predictive shimming in the assembly of a power plant generator Frame and Stator Core. A process was developed to...

Title: DESIGN AND EXPERIMENTAL ANALYSIS OF HUB CALIBRATION OF TIRE FORCE AND MOMENT TESTING MACHINE
Author: Muthyala, Dhiraj Kumar
Date Created: 2018
Subjects--Topical: Mechanical engineering, Automobiles--Design and construction
Description: Tire cornering force and moment data from an indoor tire testing machine is very important to auto-makers and tire researchers with respect to the performance of vehicles. As such, the quality of the tire data is also crucial and it is dependent o...