+publisher:"Mississippi State University" +contributor:("Mark F. Horstemeyer")

Mississippi State University

1. Nacife el Alaoui , Reda. Internal state variable plasticity-damage modeling of AISI 4140 steel including microstructure-property relations: temperature and strain rate effects.

Degree: MS, Aerospace Engineering, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07192016-201742/ ;

► Mechanical structure-property relations have been quantified for AISI 4140 steel under different strain rates and temperatures. The structure-property relations were used to calibrate a… (more)

Subjects/Keywords: Finite Element Analysis (FEA) modeling; damage.; Internal State Variable (ISV); 4140 steel

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APA (6^th Edition):

Nacife el Alaoui , R. (2016). Internal state variable plasticity-damage modeling of AISI 4140 steel including microstructure-property relations: temperature and strain rate effects. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07192016-201742/ ;

Chicago Manual of Style (16^th Edition):

Nacife el Alaoui , Reda. “Internal state variable plasticity-damage modeling of AISI 4140 steel including microstructure-property relations: temperature and strain rate effects.” 2016. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07192016-201742/ ;.

MLA Handbook (7^th Edition):

Nacife el Alaoui , Reda. “Internal state variable plasticity-damage modeling of AISI 4140 steel including microstructure-property relations: temperature and strain rate effects.” 2016. Web. 21 Feb 2019.

Vancouver:

Nacife el Alaoui R. Internal state variable plasticity-damage modeling of AISI 4140 steel including microstructure-property relations: temperature and strain rate effects. [Internet] [Masters thesis]. Mississippi State University; 2016. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07192016-201742/ ;.

Council of Science Editors:

Nacife el Alaoui R. Internal state variable plasticity-damage modeling of AISI 4140 steel including microstructure-property relations: temperature and strain rate effects. [Masters Thesis]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07192016-201742/ ;

Mississippi State University

2. Holmer, Matthew S. Structural analysis and design of seals for coal mine safety.

Degree: MS, Mechanical Engineering, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03112016-181730/ ;

► This research shows that worst-case methane-air detonation loading on coal mine seals could be more severe than the design loads required by federal regulations,… (more)

Subjects/Keywords: reinforced concrete; protective structures; mine safety; MSHA; mine seals; explosion; sealing; methane; coal mine

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APA (6^th Edition):

Holmer, M. S. (2016). Structural analysis and design of seals for coal mine safety. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03112016-181730/ ;

Chicago Manual of Style (16^th Edition):

Holmer, Matthew S. “Structural analysis and design of seals for coal mine safety.” 2016. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03112016-181730/ ;.

MLA Handbook (7^th Edition):

Holmer, Matthew S. “Structural analysis and design of seals for coal mine safety.” 2016. Web. 21 Feb 2019.

Vancouver:

Holmer MS. Structural analysis and design of seals for coal mine safety. [Internet] [Masters thesis]. Mississippi State University; 2016. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03112016-181730/ ;.

Council of Science Editors:

Holmer MS. Structural analysis and design of seals for coal mine safety. [Masters Thesis]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03112016-181730/ ;

Mississippi State University

3. Burcham, Megan Noel. Multiscale structure-property relationships of ultra-high performance concrete.

Degree: MS, Mechanical Engineering, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06232016-161231/ ;

► The structure-property relationships of Ultra-High Performance Concrete (UHPC) were quantified using imaging techniques to characterize the multiscale hierarchical heterogeneities and the mechanical properties. Through… (more)

Subjects/Keywords: ultra-high performance concrete; mesoscale

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APA (6^th Edition):

Burcham, M. N. (2016). Multiscale structure-property relationships of ultra-high performance concrete. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-06232016-161231/ ;

Chicago Manual of Style (16^th Edition):

Burcham, Megan Noel. “Multiscale structure-property relationships of ultra-high performance concrete.” 2016. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06232016-161231/ ;.

MLA Handbook (7^th Edition):

Burcham, Megan Noel. “Multiscale structure-property relationships of ultra-high performance concrete.” 2016. Web. 21 Feb 2019.

Vancouver:

Burcham MN. Multiscale structure-property relationships of ultra-high performance concrete. [Internet] [Masters thesis]. Mississippi State University; 2016. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06232016-161231/ ;.

Council of Science Editors:

Burcham MN. Multiscale structure-property relationships of ultra-high performance concrete. [Masters Thesis]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06232016-161231/ ;

Mississippi State University

4. Parrish, Andrew E. CRASHWORTHINESS OPTIMIZATION OF VEHICLE STRUCTURES CONSIDERING THE EFFECTS OF LIGHTWEIGHT MATERIAL SUBSTITUTION AND DUMMY MODELS.

Degree: MS, Aerospace Engineering, 2011, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072011-131745/ ;

► This study uses numerical design optimization with advanced metamodeling techniques to investigate the effects of material substitution and dummy models on crashworthiness characteristics of… (more)

Subjects/Keywords: Crashworthiness; Design Optimization; Metamodel; Automotive Structures; Material Substitution

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APA (6^th Edition):

Parrish, A. E. (2011). CRASHWORTHINESS OPTIMIZATION OF VEHICLE STRUCTURES CONSIDERING THE EFFECTS OF LIGHTWEIGHT MATERIAL SUBSTITUTION AND DUMMY MODELS. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072011-131745/ ;

Chicago Manual of Style (16^th Edition):

Parrish, Andrew E. “CRASHWORTHINESS OPTIMIZATION OF VEHICLE STRUCTURES CONSIDERING THE EFFECTS OF LIGHTWEIGHT MATERIAL SUBSTITUTION AND DUMMY MODELS.” 2011. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072011-131745/ ;.

MLA Handbook (7^th Edition):

Parrish, Andrew E. “CRASHWORTHINESS OPTIMIZATION OF VEHICLE STRUCTURES CONSIDERING THE EFFECTS OF LIGHTWEIGHT MATERIAL SUBSTITUTION AND DUMMY MODELS.” 2011. Web. 21 Feb 2019.

Vancouver:

Parrish AE. CRASHWORTHINESS OPTIMIZATION OF VEHICLE STRUCTURES CONSIDERING THE EFFECTS OF LIGHTWEIGHT MATERIAL SUBSTITUTION AND DUMMY MODELS. [Internet] [Masters thesis]. Mississippi State University; 2011. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072011-131745/ ;.

Council of Science Editors:

Parrish AE. CRASHWORTHINESS OPTIMIZATION OF VEHICLE STRUCTURES CONSIDERING THE EFFECTS OF LIGHTWEIGHT MATERIAL SUBSTITUTION AND DUMMY MODELS. [Masters Thesis]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07072011-131745/ ;

Mississippi State University

5. Aslam, Imran. Ab-initio and molecular dynamics simulations capturing the thermodynamic, kinetics, and thermomechanical behavior of galvanized low-alloy steel.

Degree: PhD, Mechanical Engineering, 2018, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-08232018-164000/ ;

► A seven-element Modified Embedded Atom Method (MEAM) potential comprising Fe, Mn, Si, C, Al, Zn, and O is developed by employing a hierarchical multiscale… (more)

Subjects/Keywords: first-principles; MEAM; low-alloy steels; inhibition layer; galvanized coating

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APA (6^th Edition):

Aslam, I. (2018). Ab-initio and molecular dynamics simulations capturing the thermodynamic, kinetics, and thermomechanical behavior of galvanized low-alloy steel. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-08232018-164000/ ;

Chicago Manual of Style (16^th Edition):

Aslam, Imran. “Ab-initio and molecular dynamics simulations capturing the thermodynamic, kinetics, and thermomechanical behavior of galvanized low-alloy steel.” 2018. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-08232018-164000/ ;.

MLA Handbook (7^th Edition):

Aslam, Imran. “Ab-initio and molecular dynamics simulations capturing the thermodynamic, kinetics, and thermomechanical behavior of galvanized low-alloy steel.” 2018. Web. 21 Feb 2019.

Vancouver:

Aslam I. Ab-initio and molecular dynamics simulations capturing the thermodynamic, kinetics, and thermomechanical behavior of galvanized low-alloy steel. [Internet] [Doctoral dissertation]. Mississippi State University; 2018. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-08232018-164000/ ;.

Council of Science Editors:

Aslam I. Ab-initio and molecular dynamics simulations capturing the thermodynamic, kinetics, and thermomechanical behavior of galvanized low-alloy steel. [Doctoral Dissertation]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-08232018-164000/ ;

Mississippi State University

6. Tenev, Tichomir G. An elastic constitutive model of spacetime and its applications.

Degree: PhD, Computational Engineering, 2018, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10182018-181952/ ;

► We introduce an elastic constitutive model of gravity that enables the interpretation of cosmological observations in terms of established ideas from Solid Mechanics and multiscale… (more)

Subjects/Keywords: hierarchical length scales; dark matter; particle-mesh method; cosmic fabric; spacetime; constitutive model; modified gravity

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APA (6^th Edition):

Tenev, T. G. (2018). An elastic constitutive model of spacetime and its applications. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10182018-181952/ ;

Chicago Manual of Style (16^th Edition):

Tenev, Tichomir G. “An elastic constitutive model of spacetime and its applications.” 2018. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10182018-181952/ ;.

MLA Handbook (7^th Edition):

Tenev, Tichomir G. “An elastic constitutive model of spacetime and its applications.” 2018. Web. 21 Feb 2019.

Vancouver:

Tenev TG. An elastic constitutive model of spacetime and its applications. [Internet] [Doctoral dissertation]. Mississippi State University; 2018. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10182018-181952/ ;.

Council of Science Editors:

Tenev TG. An elastic constitutive model of spacetime and its applications. [Doctoral Dissertation]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10182018-181952/ ;

Mississippi State University

7. Whittington, Wilburn Ray. Development of intermediate and high strain rate experimentation and material modeling for viscoplastic metals.

Degree: PhD, Mechanical Engineering, 2015, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262015-110522/ ;

► This work presents a combined theoretical-experimental study of strain rate behavior in metals. The method is to experimentally calibrate and validate an Internal State… (more)

Subjects/Keywords: intermediate strain rate; high strain rate; internal state variables; metals

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APA (6^th Edition):

Whittington, W. R. (2015). Development of intermediate and high strain rate experimentation and material modeling for viscoplastic metals. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262015-110522/ ;

Chicago Manual of Style (16^th Edition):

Whittington, Wilburn Ray. “Development of intermediate and high strain rate experimentation and material modeling for viscoplastic metals.” 2015. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262015-110522/ ;.

MLA Handbook (7^th Edition):

Whittington, Wilburn Ray. “Development of intermediate and high strain rate experimentation and material modeling for viscoplastic metals.” 2015. Web. 21 Feb 2019.

Vancouver:

Whittington WR. Development of intermediate and high strain rate experimentation and material modeling for viscoplastic metals. [Internet] [Doctoral dissertation]. Mississippi State University; 2015. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262015-110522/ ;.

Council of Science Editors:

Whittington WR. Development of intermediate and high strain rate experimentation and material modeling for viscoplastic metals. [Doctoral Dissertation]. Mississippi State University; 2015. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262015-110522/ ;

Mississippi State University

8. Lawrimore, William Brantley. Multiscale modeling of multiphase polymers.

Degree: PhD, Mechanical Engineering, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04222016-122150/ ;

► Accurately simulating material systems in a virtual environment requires the synthesis and utilization of all relevant information regarding performance mechanisms for the material occurring… (more)

▼ Accurately simulating material systems in a virtual environment requires the synthesis and utilization of all relevant information regarding performance mechanisms for the material occurring over a range of length and time scales. Multiscale modeling is the basis for the Integrated Computational Materials Engineering (ICME) Paradigm and is a powerful tool for accurate material simulations. However, while ICME has experienced adoption among those in the metals community, it has not gained traction in polymer research. This thesis seeks establish a hierarchical multiscale modeling methodology for simulating polymers containing secondary phases. The investigation laid out in the chapters below uses mesoscopic Finite Element Analysis (FEA) as a foundation to build a multiscale modeling methodology for polymer material systems. At the mesoscale a Design of Experiments (DOE) parametric study utilizing FEA of polymers containing defects compared the relative impacts of a selection of parameters on damage growth and coalescence in polymers. Of the parameters considered, the applied stress state proved to be the most crucial parameter affecting damage growth and coalescence. At the macroscale, the significant influence of the applied stress state on damage growth and coalescence in polymers (upscaled from the mesoscale) motivated an expansion of the Bouvard Internal State Variable (ISV) (Bouvard et al. 2013) polymer model stress state sensitivity. Deviatoric stress invariants were utilized to modify the Bouvard ISV model to account for asymmetry in polymer mechanical performance across different stress states (tension, compression, torsion). Lastly, this work implements a hierarchical multiscale modeling methodology to examine parametric effects of heterogeneities on Polymer/Clay Nanocomposites (PCNs) mechanical performance under uncertainty. A Virtual Composite Structure Generator (VCSG) built three-dimensional periodic Representative Volume Elements (RVEs) coupled to the Bouvard ISV model and a Cohesive Zone Model (CZM) which featured a Traction-Separation (T-S) rule calibrated to results upscaled from Molecular Dynamics (MD) simulations. A DOE parametric examination utilized the RVEs to determine the relative effects of a selection of parameters on the mechanical performance of PCNs. DOE results determined that nanoclay particle orientation was the most influential parameter affecting PCN elastic modulus while intercalated interlamellar gallery strength had the greatest influence on PCN yield stress. Advisors/Committee Members: Mark F. Horstemeyer (chair), Tonya W. Stone (committee member), Mei Q. Chandler (committee member), Youssef Hammi (committee member).

Subjects/Keywords: constitutive modeling; finite element; ICME; Multiscale modeling; polymer modeling

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APA (6^th Edition):

Lawrimore, W. B. (2016). Multiscale modeling of multiphase polymers. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04222016-122150/ ;

Chicago Manual of Style (16^th Edition):

Lawrimore, William Brantley. “Multiscale modeling of multiphase polymers.” 2016. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04222016-122150/ ;.

MLA Handbook (7^th Edition):

Lawrimore, William Brantley. “Multiscale modeling of multiphase polymers.” 2016. Web. 21 Feb 2019.

Vancouver:

Lawrimore WB. Multiscale modeling of multiphase polymers. [Internet] [Doctoral dissertation]. Mississippi State University; 2016. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04222016-122150/ ;.

Council of Science Editors:

Lawrimore WB. Multiscale modeling of multiphase polymers. [Doctoral Dissertation]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04222016-122150/ ;

Mississippi State University

9. Francis, David. An empirically validated multiscale continuum damage model for thermoplastic polymers subjected to variable strain rates.

Degree: PhD, Mechanical Engineering, 2013, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012013-094059/ ;

► This dissertation proposes a modied internal state variable (ISV) inelastic damage model that was motivated by experimental structure{property relations of thermoplastics. In particular, a… (more)

Subjects/Keywords: Internal State Variable; Viscoplastic Material; Thermoplastics; Constitutive Behavior; Damage modeling

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APA (6^th Edition):

Francis, D. (2013). An empirically validated multiscale continuum damage model for thermoplastic polymers subjected to variable strain rates. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012013-094059/ ;

Chicago Manual of Style (16^th Edition):

Francis, David. “An empirically validated multiscale continuum damage model for thermoplastic polymers subjected to variable strain rates.” 2013. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012013-094059/ ;.

MLA Handbook (7^th Edition):

Francis, David. “An empirically validated multiscale continuum damage model for thermoplastic polymers subjected to variable strain rates.” 2013. Web. 21 Feb 2019.

Vancouver:

Francis D. An empirically validated multiscale continuum damage model for thermoplastic polymers subjected to variable strain rates. [Internet] [Doctoral dissertation]. Mississippi State University; 2013. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012013-094059/ ;.

Council of Science Editors:

Francis D. An empirically validated multiscale continuum damage model for thermoplastic polymers subjected to variable strain rates. [Doctoral Dissertation]. Mississippi State University; 2013. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012013-094059/ ;

Mississippi State University

10. Pratt, Phillip Roger. ANALYSIS OF THERMO-MECHANICAL CHARACTERISTICS OF THE LENS PROCESS FOR STEELS USING THE FINITE ELEMENT METHOD.

Degree: MS, Mechanical Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-12082008-183521/ ;

► Laser Engineered Net Shaping (LENS) is a rapid-manufacturing procedure that involves complex thermal, mechanical, and metallurgical interactions. The finite element method (FEM) may be used… (more)

Subjects/Keywords: LENS; laser-deposition; residual stress; neutron diffraction

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APA (6^th Edition):

Pratt, P. R. (2009). ANALYSIS OF THERMO-MECHANICAL CHARACTERISTICS OF THE LENS PROCESS FOR STEELS USING THE FINITE ELEMENT METHOD. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-12082008-183521/ ;

Chicago Manual of Style (16^th Edition):

Pratt, Phillip Roger. “ANALYSIS OF THERMO-MECHANICAL CHARACTERISTICS OF THE LENS PROCESS FOR STEELS USING THE FINITE ELEMENT METHOD.” 2009. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-12082008-183521/ ;.

MLA Handbook (7^th Edition):

Pratt, Phillip Roger. “ANALYSIS OF THERMO-MECHANICAL CHARACTERISTICS OF THE LENS PROCESS FOR STEELS USING THE FINITE ELEMENT METHOD.” 2009. Web. 21 Feb 2019.

Vancouver:

Pratt PR. ANALYSIS OF THERMO-MECHANICAL CHARACTERISTICS OF THE LENS PROCESS FOR STEELS USING THE FINITE ELEMENT METHOD. [Internet] [Masters thesis]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-12082008-183521/ ;.

Council of Science Editors:

Pratt PR. ANALYSIS OF THERMO-MECHANICAL CHARACTERISTICS OF THE LENS PROCESS FOR STEELS USING THE FINITE ELEMENT METHOD. [Masters Thesis]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-12082008-183521/ ;

Mississippi State University

11. Pita, Claudio Marcos. MODELING OF OXIDE BIFILMS IN ALUMINUM CASTINGS USING THE IMMERSED ELEMENT-FREE GALERKIN METHOD.

Degree: PhD, Mechanical Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03022009-105333/ ;

► Porosity is known to be one of the primary detrimental factors controlling fatigue life and total elongation of several cast alloy components. The two… (more)

Subjects/Keywords: fluid-structure interaction; immersed element-free galerkin; meshfree; bifilms

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APA (6^th Edition):

Pita, C. M. (2009). MODELING OF OXIDE BIFILMS IN ALUMINUM CASTINGS USING THE IMMERSED ELEMENT-FREE GALERKIN METHOD. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03022009-105333/ ;

Chicago Manual of Style (16^th Edition):

Pita, Claudio Marcos. “MODELING OF OXIDE BIFILMS IN ALUMINUM CASTINGS USING THE IMMERSED ELEMENT-FREE GALERKIN METHOD.” 2009. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03022009-105333/ ;.

MLA Handbook (7^th Edition):

Pita, Claudio Marcos. “MODELING OF OXIDE BIFILMS IN ALUMINUM CASTINGS USING THE IMMERSED ELEMENT-FREE GALERKIN METHOD.” 2009. Web. 21 Feb 2019.

Vancouver:

Pita CM. MODELING OF OXIDE BIFILMS IN ALUMINUM CASTINGS USING THE IMMERSED ELEMENT-FREE GALERKIN METHOD. [Internet] [Doctoral dissertation]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03022009-105333/ ;.

Council of Science Editors:

Pita CM. MODELING OF OXIDE BIFILMS IN ALUMINUM CASTINGS USING THE IMMERSED ELEMENT-FREE GALERKIN METHOD. [Doctoral Dissertation]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03022009-105333/ ;

Mississippi State University

12. Grewal, Harpreet Singh. FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP.

Degree: MS, Mechanical Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104622/ ;

► In order to produce crack free metal powder compacts, the critical region of failure should be detected, so that the particular region can be strengthened… (more)

Subjects/Keywords: PM; Bearing Cap

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APA (6^th Edition):

Grewal, H. S. (2009). FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104622/ ;

Chicago Manual of Style (16^th Edition):

Grewal, Harpreet Singh. “FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP.” 2009. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104622/ ;.

MLA Handbook (7^th Edition):

Grewal, Harpreet Singh. “FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP.” 2009. Web. 21 Feb 2019.

Vancouver:

Grewal HS. FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP. [Internet] [Masters thesis]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104622/ ;.

Council of Science Editors:

Grewal HS. FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP. [Masters Thesis]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104622/ ;

Mississippi State University

13. Rouhi, Mohammad. TOPOLOGY OPTIMIZATION OF CONTINUUM STRUCTURES USING ELEMENT EXCHANGE METHOD.

Degree: MS, Aerospace Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-063432/ ;

► In this research, a new zeroth-order (non-gradient based) topology optimization methodology for compliance minimization was developed. It is called the Element Exchange Method (EEM).… (more)

Subjects/Keywords: stochastic; element exchange; topology optimization

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APA (6^th Edition):

Rouhi, M. (2009). TOPOLOGY OPTIMIZATION OF CONTINUUM STRUCTURES USING ELEMENT EXCHANGE METHOD. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-063432/ ;

Chicago Manual of Style (16^th Edition):

Rouhi, Mohammad. “TOPOLOGY OPTIMIZATION OF CONTINUUM STRUCTURES USING ELEMENT EXCHANGE METHOD.” 2009. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-063432/ ;.

MLA Handbook (7^th Edition):

Rouhi, Mohammad. “TOPOLOGY OPTIMIZATION OF CONTINUUM STRUCTURES USING ELEMENT EXCHANGE METHOD.” 2009. Web. 21 Feb 2019.

Vancouver:

Rouhi M. TOPOLOGY OPTIMIZATION OF CONTINUUM STRUCTURES USING ELEMENT EXCHANGE METHOD. [Internet] [Masters thesis]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-063432/ ;.

Council of Science Editors:

Rouhi M. TOPOLOGY OPTIMIZATION OF CONTINUUM STRUCTURES USING ELEMENT EXCHANGE METHOD. [Masters Thesis]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-063432/ ;

Mississippi State University

14. Priddy, Lauren Beatty. DAMAGE AND FAILURE IN THE CAROTID ARTERY: A MECHANISTIC APPROACH.

Degree: MS, Agricultural and Biological Engineering, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06302010-170507/ ;

► Blunt carotid artery injury (BCAI), resulting primarily from automobile accidents, is a major contributor to the high mortality and morbidity rates associated with carotid… (more)

Subjects/Keywords: vessel failure; damage mechanics; blunt injury; arterial dissection; carotid artery

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APA (6^th Edition):

Priddy, L. B. (2010). DAMAGE AND FAILURE IN THE CAROTID ARTERY: A MECHANISTIC APPROACH. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-06302010-170507/ ;

Chicago Manual of Style (16^th Edition):

Priddy, Lauren Beatty. “DAMAGE AND FAILURE IN THE CAROTID ARTERY: A MECHANISTIC APPROACH.” 2010. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06302010-170507/ ;.

MLA Handbook (7^th Edition):

Priddy, Lauren Beatty. “DAMAGE AND FAILURE IN THE CAROTID ARTERY: A MECHANISTIC APPROACH.” 2010. Web. 21 Feb 2019.

Vancouver:

Priddy LB. DAMAGE AND FAILURE IN THE CAROTID ARTERY: A MECHANISTIC APPROACH. [Internet] [Masters thesis]. Mississippi State University; 2010. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06302010-170507/ ;.

Council of Science Editors:

Priddy LB. DAMAGE AND FAILURE IN THE CAROTID ARTERY: A MECHANISTIC APPROACH. [Masters Thesis]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06302010-170507/ ;

Mississippi State University

15. Ehrgott, Jr., John Qua. INFLUENCE OF SOIL PROPERTIES ON THE ABOVEGROUND BLAST ENVIRONMENT FROM A NEAR-SURFACE DETONATION.

Degree: PhD, Civil and Environmental Engineering, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09022010-083710/ ;

► Detonation of an explosive charge, such as a mine or an improvised explosive device (IED) at the ground surface or buried at shallow depth… (more)

▼ Detonation of an explosive charge, such as a mine or an improvised explosive device (IED) at the ground surface or buried at shallow depth in soil, can produce high airblast pressures and significant dynamic soil debris loads on an overlying or nearby structure, such as a vehicle passing over the explosive. The blast loading environment is a function of many factors including the explosive type, configuration, mass, and depth of burial, soil characteristics, and the distance between the ground surface and the structure or object. During the past several years, the US Army has focused considerable attention on developing improved methods for predicting this environment, particularly for use by vehicle/armor analysts, thereby, improving the survivability of these platforms. Research is needed to better understand the aboveground environment created by the detonation of a shallow-buried explosive in order to design adequate protective measures for an aboveground structure. Unfortunately, there is no accurate methodology for predicting these airblast and soil debris loads to support the designs. Development of the required prediction tools is hampered by lack of well controlled and documented experimental results for these complex loads. Without detailed experimental data, the numerical simulations of these loads cannot be adequately validated for the large deformation, stress, and motion gradients and the resulting interactions with structures. The focus of this research is to quantify the influence of soil properties on the aboveground environment from the detonation of a bare explosive charge resting on the soil surface or shallow-buried. In order to fully quantify the influence of soil parameters, well-controlled experiments were designed to directly measure soil debris and airblast loadings on an aboveground reaction structure due to the detonation of explosives at the surface of and shallow buried in three very different soils. The experiments were performed using specifications and strict quality controls that limited the influence of outside variables and ensured the experiments were repeatable. The experiments provided blast pressure, soil stress, and impulse data for each soil type. These data were analyzed to investigate the influence of the properties of the different soil types on the aboveground environment. Advisors/Committee Members: Philip M. Gullett (chair), Mark F. Horstemeyer (committee member), Donald Cargile (committee member), Stanley Woodson (committee member).

Subjects/Keywords: Airblast and Soil Debrie; Blast Loading; Shallow Buried Charge

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APA (6^th Edition):

Ehrgott, Jr., J. Q. (2010). INFLUENCE OF SOIL PROPERTIES ON THE ABOVEGROUND BLAST ENVIRONMENT FROM A NEAR-SURFACE DETONATION. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-09022010-083710/ ;

Chicago Manual of Style (16^th Edition):

Ehrgott, Jr., John Qua. “INFLUENCE OF SOIL PROPERTIES ON THE ABOVEGROUND BLAST ENVIRONMENT FROM A NEAR-SURFACE DETONATION.” 2010. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-09022010-083710/ ;.

MLA Handbook (7^th Edition):

Ehrgott, Jr., John Qua. “INFLUENCE OF SOIL PROPERTIES ON THE ABOVEGROUND BLAST ENVIRONMENT FROM A NEAR-SURFACE DETONATION.” 2010. Web. 21 Feb 2019.

Vancouver:

Ehrgott, Jr. JQ. INFLUENCE OF SOIL PROPERTIES ON THE ABOVEGROUND BLAST ENVIRONMENT FROM A NEAR-SURFACE DETONATION. [Internet] [Doctoral dissertation]. Mississippi State University; 2010. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09022010-083710/ ;.

Council of Science Editors:

Ehrgott, Jr. JQ. INFLUENCE OF SOIL PROPERTIES ON THE ABOVEGROUND BLAST ENVIRONMENT FROM A NEAR-SURFACE DETONATION. [Doctoral Dissertation]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09022010-083710/ ;

Mississippi State University

16. Begonia, Mark. STRUCTURE-PROPERTY RELATIONS IN PORCINE BRAIN TISSUE: STRAIN RATE AND STRESS-STATE DEPENDENCE.

Degree: MS, Agricultural and Biological Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-144151/ ;

► Due to traumatic brain injury (TBI), numerous studies have focused on comprehensively determining the mechanical properties of the brain. This study examined the strain rate… (more)

Subjects/Keywords: strain rate dependence; stress-state dependence; viscoelastic; traumatic brain injury

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APA (6^th Edition):

Begonia, M. (2009). STRUCTURE-PROPERTY RELATIONS IN PORCINE BRAIN TISSUE: STRAIN RATE AND STRESS-STATE DEPENDENCE. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-144151/ ;

Chicago Manual of Style (16^th Edition):

Begonia, Mark. “STRUCTURE-PROPERTY RELATIONS IN PORCINE BRAIN TISSUE: STRAIN RATE AND STRESS-STATE DEPENDENCE.” 2009. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-144151/ ;.

MLA Handbook (7^th Edition):

Begonia, Mark. “STRUCTURE-PROPERTY RELATIONS IN PORCINE BRAIN TISSUE: STRAIN RATE AND STRESS-STATE DEPENDENCE.” 2009. Web. 21 Feb 2019.

Vancouver:

Begonia M. STRUCTURE-PROPERTY RELATIONS IN PORCINE BRAIN TISSUE: STRAIN RATE AND STRESS-STATE DEPENDENCE. [Internet] [Masters thesis]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-144151/ ;.

Council of Science Editors:

Begonia M. STRUCTURE-PROPERTY RELATIONS IN PORCINE BRAIN TISSUE: STRAIN RATE AND STRESS-STATE DEPENDENCE. [Masters Thesis]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-144151/ ;

Mississippi State University

17. Kapil, Janit. TWIN NUCLEATION, TWIN PROPAGATION, TWIN-SLIP INTERACTIONS, PSEUDO-ELASTICITY, STRAIN-RATE SENSITIVITY AND NON-SCHMID'S EFFECTS OF {101¯2} TWINNING IN MAGNESIUM VIA IN-SITU EBSD.

Degree: MS, Mechanical Engineering, 2011, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302011-182638/ ;

► In-situ EBSD on profuse {10ˉ12} twinning in magnesium revealed that the twinning stress for nucleation is not totally rate-insensitive but highly dependent on grain… (more)

Subjects/Keywords: strain-rate dependence; grain misorientation; Non-Schmid's effects; twin-twin hardening; pseudo-elasticity; twin propagation; In-situ EBSD; twin nucleation

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APA (6^th Edition):

Kapil, J. (2011). TWIN NUCLEATION, TWIN PROPAGATION, TWIN-SLIP INTERACTIONS, PSEUDO-ELASTICITY, STRAIN-RATE SENSITIVITY AND NON-SCHMID'S EFFECTS OF {101¯2} TWINNING IN MAGNESIUM VIA IN-SITU EBSD. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302011-182638/ ;

Chicago Manual of Style (16^th Edition):

Kapil, Janit. “TWIN NUCLEATION, TWIN PROPAGATION, TWIN-SLIP INTERACTIONS, PSEUDO-ELASTICITY, STRAIN-RATE SENSITIVITY AND NON-SCHMID'S EFFECTS OF {101¯2} TWINNING IN MAGNESIUM VIA IN-SITU EBSD.” 2011. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302011-182638/ ;.

MLA Handbook (7^th Edition):

Kapil, Janit. “TWIN NUCLEATION, TWIN PROPAGATION, TWIN-SLIP INTERACTIONS, PSEUDO-ELASTICITY, STRAIN-RATE SENSITIVITY AND NON-SCHMID'S EFFECTS OF {101¯2} TWINNING IN MAGNESIUM VIA IN-SITU EBSD.” 2011. Web. 21 Feb 2019.

Vancouver:

Kapil J. TWIN NUCLEATION, TWIN PROPAGATION, TWIN-SLIP INTERACTIONS, PSEUDO-ELASTICITY, STRAIN-RATE SENSITIVITY AND NON-SCHMID'S EFFECTS OF {101¯2} TWINNING IN MAGNESIUM VIA IN-SITU EBSD. [Internet] [Masters thesis]. Mississippi State University; 2011. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302011-182638/ ;.

Council of Science Editors:

Kapil J. TWIN NUCLEATION, TWIN PROPAGATION, TWIN-SLIP INTERACTIONS, PSEUDO-ELASTICITY, STRAIN-RATE SENSITIVITY AND NON-SCHMID'S EFFECTS OF {101¯2} TWINNING IN MAGNESIUM VIA IN-SITU EBSD. [Masters Thesis]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03302011-182638/ ;

Mississippi State University

18. Parkar, Abdul Afoo H. ON MODELING AND EXPERIMENTAL VALIDATION OF EXTRUSION PROCESS OF LIGHTWEIGHT ALLOYS.

Degree: MS, Mechanical Engineering, 2011, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04292011-165856/ ;

► Laboratory-scale extrusion facilitated a parametric study of the metal extrusion process under controlled conditions. Hot extrusion experiments were performed on billets of both aluminum… (more)

Subjects/Keywords: Extrusion; Al1100; AM30; AZ61; Modeling; HyperXtrude; Experimental; Validation; Texture

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APA (6^th Edition):

Parkar, A. A. H. (2011). ON MODELING AND EXPERIMENTAL VALIDATION OF EXTRUSION PROCESS OF LIGHTWEIGHT ALLOYS. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04292011-165856/ ;

Chicago Manual of Style (16^th Edition):

Parkar, Abdul Afoo H. “ON MODELING AND EXPERIMENTAL VALIDATION OF EXTRUSION PROCESS OF LIGHTWEIGHT ALLOYS.” 2011. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04292011-165856/ ;.

MLA Handbook (7^th Edition):

Parkar, Abdul Afoo H. “ON MODELING AND EXPERIMENTAL VALIDATION OF EXTRUSION PROCESS OF LIGHTWEIGHT ALLOYS.” 2011. Web. 21 Feb 2019.

Vancouver:

Parkar AAH. ON MODELING AND EXPERIMENTAL VALIDATION OF EXTRUSION PROCESS OF LIGHTWEIGHT ALLOYS. [Internet] [Masters thesis]. Mississippi State University; 2011. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04292011-165856/ ;.

Council of Science Editors:

Parkar AAH. ON MODELING AND EXPERIMENTAL VALIDATION OF EXTRUSION PROCESS OF LIGHTWEIGHT ALLOYS. [Masters Thesis]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04292011-165856/ ;

Mississippi State University

19. Hajianmaleki, Mehdi. STATIC AND VIBRATION ANALYSIS OF THICK GENERALLY LAMINATED COMPOSITE DEEP CURVED BEAMS.

Degree: PhD, Mechanical Engineering, 2011, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022011-030129/ ;

► A rigorous first order shear deformation theory (FSDT) is employed along with modified ABD parameters to analyze static and free vibration behavior of generally… (more)

▼ A rigorous first order shear deformation theory (FSDT) is employed along with modified ABD parameters to analyze static and free vibration behavior of generally laminated beams and shafts. Different approaches for calculating composite beam stiffness parameters have been considered and the most accurate one that accounts for material couplings have been used to analyze static and free vibration behaviors of straight beams with different laminates and boundary conditions. In order to analyze curved beams, the term (1+z/R) is exactly integrated into ABD parameters formulation and an equivalent modulus of elasticity is used instead of traditional stiffness terms to account for both the deepness and material coupling of the beam structures. The model has been solved analytically for simply supported boundary conditions and the general differential quadrature (GDQ) technique has been used for other boundary conditions. The results for deflection, moment resultants, and natural frequencies of straight and curved beams with different deepness ratio (often called depth ratio), slenderness ratio, lamination, and boundary conditions are compared with those obtained from accurate three dimensional finite element simulations using ANSYS. The results were in close proximity to three dimensional finite element results. The model is then applied to transverse vibration analysis of multi-span generally laminated composite shafts with a lumped mass using GDQ. The results for natural frequencies are compared to experimental and other analytical models as well as finite element simulation. The results in the present analyses were found accurate. Conclusively, it has been shown that when considering more accurate stiffness parameters, a First Order Shear Deformation Theory can accurately predict static and free vibration behaviors of composite beams and multispan shafts of any deepness, lamination and boundary conditions. Advisors/Committee Members: Mark F. Horstemeyer (committee member), Mohamad S. Qatu (chair), Oliver Myers (committee member), Rani W. Sullivan (committee member).

Subjects/Keywords: Beam; Composite; Shaft; Vibration; Static; Deep

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APA (6^th Edition):

Hajianmaleki, M. (2011). STATIC AND VIBRATION ANALYSIS OF THICK GENERALLY LAMINATED COMPOSITE DEEP CURVED BEAMS. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022011-030129/ ;

Chicago Manual of Style (16^th Edition):

Hajianmaleki, Mehdi. “STATIC AND VIBRATION ANALYSIS OF THICK GENERALLY LAMINATED COMPOSITE DEEP CURVED BEAMS.” 2011. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022011-030129/ ;.

MLA Handbook (7^th Edition):

Hajianmaleki, Mehdi. “STATIC AND VIBRATION ANALYSIS OF THICK GENERALLY LAMINATED COMPOSITE DEEP CURVED BEAMS.” 2011. Web. 21 Feb 2019.

Vancouver:

Hajianmaleki M. STATIC AND VIBRATION ANALYSIS OF THICK GENERALLY LAMINATED COMPOSITE DEEP CURVED BEAMS. [Internet] [Doctoral dissertation]. Mississippi State University; 2011. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022011-030129/ ;.

Council of Science Editors:

Hajianmaleki M. STATIC AND VIBRATION ANALYSIS OF THICK GENERALLY LAMINATED COMPOSITE DEEP CURVED BEAMS. [Doctoral Dissertation]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022011-030129/ ;

Mississippi State University

20. Fuller, Robert William. Fatigue life and crack growth prediction of irradiated stainless steels.

Degree: PhD, Mechanical Engineering, 2018, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-01312018-183421/ ;

► One of prominent issues related to failures in nuclear power components is attributed to material degradation due the aggressive environment conditions, and mechanical stresses.… (more)

▼ One of prominent issues related to failures in nuclear power components is attributed to material degradation due the aggressive environment conditions, and mechanical stresses. For instance, reactor core support components, such as fuel claddings, are under prolonged exposure to an intense neutron field from the fission of fuel and operate at elevated temperature under fatigue loadings caused by start up, shut down, and unscheduled emergency shut down. Additionally, exposure to high-fluence neutron radiation can lead to microscopic defects that result in material hardening and embrittlement, which significantly affects the physical and mechanical properties of the materials, resulting in further reduction in fatigue life of reactor structural components. The effects of fatigue damage on material deterioration can be further exacerbated by the presence of thermal loading, hold-time, and high-temperature water coolant environments. In this study, uniaxial fatigue models were used to predict fatigue behavior based only on simple monotonic properties including ultimate tensile strength and Brinell hardness. Two existing models, the Bäumel Seeger uniform material law and the Roessle Fatemi hardness method, were employed and extended to include the effects of test temperature, neutron irradiation fluence, irradiation induced helium and irradiation induced swellings on fatigue life of austenitic stainless steels. Furthermore, a methodology to estimate fatigue crack length using a strip-yield based model is presented. This methodology is also extended to address the effect of creep deformation in a presence of hold- times, and expanded to include the effects of irradiation and water environment. Reasonable fatigue life predictions and crack growth estimations are obtained for irradiated austenitic stainless steels types 304, 304L, and 316, when compared to the experimental data available in the literature. Lastly, a failure analysis methodology of a mixer unit shaft made of AISI 304 stainless steel is also presented using a conventional 14-step failure analysis approach. The primary mode of failure is identified to be intergranular stress cracking at the heat affected zones. A means of circumventing this type of failure in the future is presented. Advisors/Committee Members: Haitham El Kadiri (chair), Nima Shamsaei (chair), Mark F. Horstemeyer (committee member), James C. Newman (committee member), Yucheng Liu (committee member).

Subjects/Keywords: irradiated stainless steel; fracture surface failure analysis; heat affected zones; intergrannular stress cracking; irradiation-induced helium; void swelling; stainless steel; life prediction; crack growth estimation; elevated temperature; creep-fatigue; neutron irradiation; Strip yield model

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APA (6^th Edition):

Fuller, R. W. (2018). Fatigue life and crack growth prediction of irradiated stainless steels. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-01312018-183421/ ;

Chicago Manual of Style (16^th Edition):

Fuller, Robert William. “Fatigue life and crack growth prediction of irradiated stainless steels.” 2018. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-01312018-183421/ ;.

MLA Handbook (7^th Edition):

Fuller, Robert William. “Fatigue life and crack growth prediction of irradiated stainless steels.” 2018. Web. 21 Feb 2019.

Vancouver:

Fuller RW. Fatigue life and crack growth prediction of irradiated stainless steels. [Internet] [Doctoral dissertation]. Mississippi State University; 2018. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-01312018-183421/ ;.

Council of Science Editors:

Fuller RW. Fatigue life and crack growth prediction of irradiated stainless steels. [Doctoral Dissertation]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-01312018-183421/ ;

Mississippi State University

21. Dixit, Vivek. First principles investigation of substituted strontium hexaferrite.

Degree: PhD, Physics and Astronomy, 2015, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10202015-121304/ ;

► This dissertation investigates how the magnetic properties of strontium hexaferrite change upon the substitution of foreign atoms at the Fe sites. Strontium hexaferrite, SrFe₁₂O₁₉… (more)

▼ This dissertation investigates how the magnetic properties of strontium hexaferrite change upon the substitution of foreign atoms at the Fe sites. Strontium hexaferrite, SrFe₁₂O₁₉ is a commonly used hard magnetic material and is produced in large quantities (around 500,000 tons per year). For different applications of strontium hexaferrite, its magnetic properties can be tuned by a proper substitution of the foreign atoms. Experimental screening for a proper substitution is a cost-intensive and time-consuming process, whereas computationally it can be done more efficiently. We used the density functional theory a first principles based method to study substituted strontium hexaferrite. The site occupancies of the substituted atoms were estimated by calculating the substitution energies of different configurations. The formation probabilities of configurations were used to calculate the magnetic properties of substituted strontium hexaferrite. In the first study, Al-substituted strontium hexaferrite, SrFe12-xAl x O₁₉, with x = 0.5 and x = 1.0 were investigated. It was found that at the annealing temperature the nonmagnetic Al⁺³ ions preferentially replace Fe⁺³ ions from the 12k and 2a sites. We found that the magnetization decreases and the magnetic anisotropy field increases as the fraction, x of the Al atoms increases. In the second study, SrFe12-x Gax O₁₉ and SrFe12-x Inx O₁₉ with x = 0.5 and x = 1.0 were investigated. In the case of SrFe12-x Gax O₁₉, the sites where Ga⁺³ ions prefer to enter are: 12k, 2a, and 4f₁. For SrFe12-x Inx O₁₉, In⁺³ ions most likely to occupy the 12k, 4f₁, and 4f₂ sites. In both cases the magnetization was found to decrease slightly as the fraction of substituted atom increases. The magnetic anisotropy field increased for SrFe12-x Gax O₁₉, and decreased for SrFe12-x Inx O₁₉ as the concentration of substituted atoms increased. In the third study, 23 elements (M) were screened for their possible substitution in strontium hexaferrite, SrFe12-x Mx O₁₉ with x = 0.5. In each case the site preference of the substituted atom and the magnetic properties were calculated. We found that Bi, Ge, Sb, Sn, and Sc can effectively increase the magnetization, and Cr, P, Co, Al, Ga, and Ti can increase the anisotropy field when substituted into strontium hexaferrite. Advisors/Committee Members: Seong-Gon Kim (chair), Mark F. Horstemeyer (committee member), Mark A. Novotny (committee member), Steven R. Gwaltney (committee member), R. Torsten Clay (committee member).

Subjects/Keywords: Substitution; Strontium Hexaferrite; Density Functional Theory; Site Preference; Magnetization; Magnetic Anisotropy.

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APA (6^th Edition):

Dixit, V. (2015). First principles investigation of substituted strontium hexaferrite. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10202015-121304/ ;

Chicago Manual of Style (16^th Edition):

Dixit, Vivek. “First principles investigation of substituted strontium hexaferrite.” 2015. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10202015-121304/ ;.

MLA Handbook (7^th Edition):

Dixit, Vivek. “First principles investigation of substituted strontium hexaferrite.” 2015. Web. 21 Feb 2019.

Vancouver:

Dixit V. First principles investigation of substituted strontium hexaferrite. [Internet] [Doctoral dissertation]. Mississippi State University; 2015. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10202015-121304/ ;.

Council of Science Editors:

Dixit V. First principles investigation of substituted strontium hexaferrite. [Doctoral Dissertation]. Mississippi State University; 2015. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10202015-121304/ ;

Mississippi State University

22. Rush, Gustavus Alston. Design of an American football helmet liner for concussion mitigation.

Degree: PhD, Agricultural and Biological Engineering, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06212016-171720/ ;

► The objective of this research was to develop an optimal design for a polymeric American football helmet liner for concussion prevention utilizing experiments and… (more)

Subjects/Keywords: design of experiments optimization; Head Injury Criterion; Gadd Severity Index; National Operating Committee on Standards for Athl; helmet impact testing; Concussion; Finite Element Analysis; American football

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APA (6^th Edition):

Rush, G. A. (2016). Design of an American football helmet liner for concussion mitigation. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-06212016-171720/ ;

Chicago Manual of Style (16^th Edition):

Rush, Gustavus Alston. “Design of an American football helmet liner for concussion mitigation.” 2016. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06212016-171720/ ;.

MLA Handbook (7^th Edition):

Rush, Gustavus Alston. “Design of an American football helmet liner for concussion mitigation.” 2016. Web. 21 Feb 2019.

Vancouver:

Rush GA. Design of an American football helmet liner for concussion mitigation. [Internet] [Doctoral dissertation]. Mississippi State University; 2016. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06212016-171720/ ;.

Council of Science Editors:

Rush GA. Design of an American football helmet liner for concussion mitigation. [Doctoral Dissertation]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06212016-171720/ ;

Mississippi State University

23. Scott, Dylan Andrew. Introducing new energy dissipation mechanisms for steel fiber reinforcement in ultra-high performance concrete.

Degree: MS, Mechanical Engineering, 2017, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262017-160054/ ;

► By adding annealed plain carbon steel fibers and stainless steel fibers into Ultra-High Performance Concrete (UHPC), we have increased UHPCs toughness through optimized thermal processing… (more)

Subjects/Keywords: UHPC; steel fiber reinforcement; fiber reinforced concrete

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APA (6^th Edition):

Scott, D. A. (2017). Introducing new energy dissipation mechanisms for steel fiber reinforcement in ultra-high performance concrete. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262017-160054/ ;

Chicago Manual of Style (16^th Edition):

Scott, Dylan Andrew. “Introducing new energy dissipation mechanisms for steel fiber reinforcement in ultra-high performance concrete.” 2017. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262017-160054/ ;.

MLA Handbook (7^th Edition):

Scott, Dylan Andrew. “Introducing new energy dissipation mechanisms for steel fiber reinforcement in ultra-high performance concrete.” 2017. Web. 21 Feb 2019.

Vancouver:

Scott DA. Introducing new energy dissipation mechanisms for steel fiber reinforcement in ultra-high performance concrete. [Internet] [Masters thesis]. Mississippi State University; 2017. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262017-160054/ ;.

Council of Science Editors:

Scott DA. Introducing new energy dissipation mechanisms for steel fiber reinforcement in ultra-high performance concrete. [Masters Thesis]. Mississippi State University; 2017. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10262017-160054/ ;

Mississippi State University

24. Stone, Tonya Williams. MULTISCALE FRICTION USING A NESTED INTERNAL STATE VARIABLE MODEL FOR PARTICULATE MATERIALS.

Degree: PhD, Mechanical Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-12172008-002750/ ;

► In the current study we use a multiscale computational methodology to develop an internal state variable model that captures frictional effects during the compaction… (more)

Subjects/Keywords: multiscale modeling; molecular dynamics; friction; granular materials; particle deformation; plasticity

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APA (6^th Edition):

Stone, T. W. (2009). MULTISCALE FRICTION USING A NESTED INTERNAL STATE VARIABLE MODEL FOR PARTICULATE MATERIALS. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-12172008-002750/ ;

Chicago Manual of Style (16^th Edition):

Stone, Tonya Williams. “MULTISCALE FRICTION USING A NESTED INTERNAL STATE VARIABLE MODEL FOR PARTICULATE MATERIALS.” 2009. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-12172008-002750/ ;.

MLA Handbook (7^th Edition):

Stone, Tonya Williams. “MULTISCALE FRICTION USING A NESTED INTERNAL STATE VARIABLE MODEL FOR PARTICULATE MATERIALS.” 2009. Web. 21 Feb 2019.

Vancouver:

Stone TW. MULTISCALE FRICTION USING A NESTED INTERNAL STATE VARIABLE MODEL FOR PARTICULATE MATERIALS. [Internet] [Doctoral dissertation]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-12172008-002750/ ;.

Council of Science Editors:

Stone TW. MULTISCALE FRICTION USING A NESTED INTERNAL STATE VARIABLE MODEL FOR PARTICULATE MATERIALS. [Doctoral Dissertation]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-12172008-002750/ ;

Mississippi State University

25. Najafi, Ali. AXIAL COLLAPSE OF THIN-WALLED, MULTI-CORNER, SINGLE- AND MULTI-CELL TUBES.

Degree: MS, Aerospace Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06152009-125424/ ;

► Nonlinear explicit finite element (FE) simulations are used to study the axial collapse behavior of multi-corner. single- and multi-cell crush tubes under quasi-static and dynamic… (more)

Subjects/Keywords: Crush tubes; Multi-cell tubes; Quasi- static progressive collapse; Upper-bound theorem; super folding element; Explicit finite element; Dynamic Impact

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APA (6^th Edition):

Najafi, A. (2009). AXIAL COLLAPSE OF THIN-WALLED, MULTI-CORNER, SINGLE- AND MULTI-CELL TUBES. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-06152009-125424/ ;

Chicago Manual of Style (16^th Edition):

Najafi, Ali. “AXIAL COLLAPSE OF THIN-WALLED, MULTI-CORNER, SINGLE- AND MULTI-CELL TUBES.” 2009. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06152009-125424/ ;.

MLA Handbook (7^th Edition):

Najafi, Ali. “AXIAL COLLAPSE OF THIN-WALLED, MULTI-CORNER, SINGLE- AND MULTI-CELL TUBES.” 2009. Web. 21 Feb 2019.

Vancouver:

Najafi A. AXIAL COLLAPSE OF THIN-WALLED, MULTI-CORNER, SINGLE- AND MULTI-CELL TUBES. [Internet] [Masters thesis]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06152009-125424/ ;.

Council of Science Editors:

Najafi A. AXIAL COLLAPSE OF THIN-WALLED, MULTI-CORNER, SINGLE- AND MULTI-CELL TUBES. [Masters Thesis]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-06152009-125424/ ;

Mississippi State University

26. Allison, Paul Galon. STRUCTURE-PROPERTY RELATIONS FOR MONOTONIC AND FATIGUE LOADING CONDITIONS FOR A POWDER METAL STEEL.

Degree: PhD, Mechanical Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-170520/ ;

► Developing a multi-scale math-based model for powder metallurgy (PM) component design and performance prediction requires experimental calibration and validation. Monotonic tension, compression and torsion tests… (more)

Subjects/Keywords: Powder Metallurgy; FC-0205; Mechanical Testing; Fatigue

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APA (6^th Edition):

Allison, P. G. (2009). STRUCTURE-PROPERTY RELATIONS FOR MONOTONIC AND FATIGUE LOADING CONDITIONS FOR A POWDER METAL STEEL. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-170520/ ;

Chicago Manual of Style (16^th Edition):

Allison, Paul Galon. “STRUCTURE-PROPERTY RELATIONS FOR MONOTONIC AND FATIGUE LOADING CONDITIONS FOR A POWDER METAL STEEL.” 2009. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-170520/ ;.

MLA Handbook (7^th Edition):

Allison, Paul Galon. “STRUCTURE-PROPERTY RELATIONS FOR MONOTONIC AND FATIGUE LOADING CONDITIONS FOR A POWDER METAL STEEL.” 2009. Web. 21 Feb 2019.

Vancouver:

Allison PG. STRUCTURE-PROPERTY RELATIONS FOR MONOTONIC AND FATIGUE LOADING CONDITIONS FOR A POWDER METAL STEEL. [Internet] [Doctoral dissertation]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-170520/ ;.

Council of Science Editors:

Allison PG. STRUCTURE-PROPERTY RELATIONS FOR MONOTONIC AND FATIGUE LOADING CONDITIONS FOR A POWDER METAL STEEL. [Doctoral Dissertation]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-170520/ ;

Mississippi State University

27. Lugo, Marcos. FINITE ELEMENT MODELING OF PLASTICITY INDUCED CRACK CLOSURE AND A MECHANICS BASED STUDY OF CRACK CLOSURE MEASUREMENT TECHNIQUES.

Degree: PhD, Mechanical Engineering, 2009, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11162009-194447/ ;

► From its discovery, crack closure was recognized as a key aspect in understanding the fatigue crack growth process. Considering the condition of plane stress,… (more)

▼ From its discovery, crack closure was recognized as a key aspect in understanding the fatigue crack growth process. Considering the condition of plane stress, a vast amount of research has been conducted experimentally, analytically, and numerically to understand the complex process of fatigue crack growth and crack closure. Nonzero crack opening stress values are routinely observed, and it seems that there is a general agreement regarding the incidence of the phenomenon under plane stress. However, investigations regarding crack closure under plane strain conditions are less abundant. Moreover, the existence of crack closure under the plane strain state of the stress has been questioned. The importance of accurate measurements of closure to predict adequately fatigue crack growth rates should not be underestimated. Models employed to predict fatigue crack growth rates rely on plasticity-induced crack closure concepts, and the validity of plasticity-induced crack closure depends on crack closure measurements. Crack closure measurements can be performed with Elbers Method, the ASTM standard(Compliance offset method), or it may be done alternatively by the compliance ratio (CR) or the adjusted compliance ratio method (ACR). In this research, a small scale yielding two-parameter modified boundary layer analysis is performed to study the occurrence of plasticity-induced fatigue crack closure under constant amplitude loading and plane strain conditions. A wide range of T-stresses and KI levels are considered in the finite element analysis with the purpose of exploring the behavior of the crack opening stress. Crack closure was observed for some values of T-stress. Other values of T-stress resulted in an absence of closure under steady state conditions. In addition, an elastic-plastic finite element model was used to simulate a growing fatigue crack with WARP3D software. The computed displacements were used to determine the effective stress intensity factor range ΔK_eff with the ASTM standard compliance offset approach, the (CR) method, and the (ACR) method. Finally, measurement location effects on ACR and the ability of ACR method to remove residuals stresses were investigated. Advisors/Committee Members: Steven R. Daniewicz (chair), Mark F. Horstemeyer (committee member), James C. Newman, Jr. (committee member), John T. Berry (committee member).

Subjects/Keywords: modified boundary layer model; modeling crack closure; ACR method; crack closure measurements; crack closure; plane strain

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APA (6^th Edition):

Lugo, M. (2009). FINITE ELEMENT MODELING OF PLASTICITY INDUCED CRACK CLOSURE AND A MECHANICS BASED STUDY OF CRACK CLOSURE MEASUREMENT TECHNIQUES. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11162009-194447/ ;

Chicago Manual of Style (16^th Edition):

Lugo, Marcos. “FINITE ELEMENT MODELING OF PLASTICITY INDUCED CRACK CLOSURE AND A MECHANICS BASED STUDY OF CRACK CLOSURE MEASUREMENT TECHNIQUES.” 2009. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11162009-194447/ ;.

MLA Handbook (7^th Edition):

Lugo, Marcos. “FINITE ELEMENT MODELING OF PLASTICITY INDUCED CRACK CLOSURE AND A MECHANICS BASED STUDY OF CRACK CLOSURE MEASUREMENT TECHNIQUES.” 2009. Web. 21 Feb 2019.

Vancouver:

Lugo M. FINITE ELEMENT MODELING OF PLASTICITY INDUCED CRACK CLOSURE AND A MECHANICS BASED STUDY OF CRACK CLOSURE MEASUREMENT TECHNIQUES. [Internet] [Doctoral dissertation]. Mississippi State University; 2009. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11162009-194447/ ;.

Council of Science Editors:

Lugo M. FINITE ELEMENT MODELING OF PLASTICITY INDUCED CRACK CLOSURE AND A MECHANICS BASED STUDY OF CRACK CLOSURE MEASUREMENT TECHNIQUES. [Doctoral Dissertation]. Mississippi State University; 2009. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11162009-194447/ ;

Mississippi State University

28. Sherburn, Jesse Andrew. MODELING MANTLE CONVECTION USING AN INTERNAL STATE VARIABLE MODEL FRAMEWORK.

Degree: PhD, Mechanical Engineering, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03312010-162624/ ;

► In the current study we developed an internal state variable (ISV) model based on the Bammann inelasticity internal state variable model (BIISV) to include… (more)

▼ In the current study we developed an internal state variable (ISV) model based on the Bammann inelasticity internal state variable model (BIISV) to include damage, recrystallization, and texture development, which we then implemented into a mantle convection code, TERRA2D, to incorporate higher fidelity material behavior into mantle convection simulations. With experimental stress strain data found in the literature model constants for the BIISV model were determined for a number of geologic materials. The BIISV model was shown to be far superior to the steady state power law model currently used by the geologic community to capture the deformation of geologic materials. Once implemented and verified in TERRA2D the BIISV model revealed locations of hardened material that behaved like diverters in the cold thermal boundary layer that the power law model could never produce. These hardened regions could be a plausible reason for the current subduction zones present on the earth. We then altered the BIISV model equation to include the effects of damage, recrystallization, and texture development in order to model possible weakening mechanisms in the cold thermal boundary layer of the mantle. Inclusion of damage and recrystallization allowed the cold thermal boundary layer to mobilize and plunge downward into the hotter region below. Texture development increased the intensity of rotational flow within the hotter zone as cold boundary material plunged downward which aided in destabilizing the cold upper thermal boundary layer. The inclusion of an internal state variable model with damage, recrystallization, and texture development represents a significant advancement in handling deformational physics for mantle phenomena in a comprehensive, unified, and automatic manner. Advisors/Committee Members: Mark F. Horstemeyer (chair), Douglas J. Bammann (committee member), D. Keith Walters (committee member), Philip M. Gullett (committee member), Haitham El Kadiri (committee member).

Subjects/Keywords: recrystallization; texture; damage; internal state variable modeling; mantle convection

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APA (6^th Edition):

Sherburn, J. A. (2010). MODELING MANTLE CONVECTION USING AN INTERNAL STATE VARIABLE MODEL FRAMEWORK. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03312010-162624/ ;

Chicago Manual of Style (16^th Edition):

Sherburn, Jesse Andrew. “MODELING MANTLE CONVECTION USING AN INTERNAL STATE VARIABLE MODEL FRAMEWORK.” 2010. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03312010-162624/ ;.

MLA Handbook (7^th Edition):

Sherburn, Jesse Andrew. “MODELING MANTLE CONVECTION USING AN INTERNAL STATE VARIABLE MODEL FRAMEWORK.” 2010. Web. 21 Feb 2019.

Vancouver:

Sherburn JA. MODELING MANTLE CONVECTION USING AN INTERNAL STATE VARIABLE MODEL FRAMEWORK. [Internet] [Doctoral dissertation]. Mississippi State University; 2010. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03312010-162624/ ;.

Council of Science Editors:

Sherburn JA. MODELING MANTLE CONVECTION USING AN INTERNAL STATE VARIABLE MODEL FRAMEWORK. [Doctoral Dissertation]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03312010-162624/ ;

Mississippi State University

29. Du, Yicheng. AN APPLIED INVESTIGATION OF KENAF-BASED FIBER/POLYMER COMPOSITES AS POTENTIAL LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE COMPONENTS.

Degree: PhD, Forest Products, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-05182010-212131/ ;

► Natural fibers have the potential to replace glass fibers in fiber-reinforced composite applications. However, the natural fibers intrinsic properties cause these issues: 1) the… (more)

▼ Natural fibers have the potential to replace glass fibers in fiber-reinforced composite applications. However, the natural fibers intrinsic properties cause these issues: 1) the mechanical property variation; 2) moisture uptake by natural fibers and their composites; 3) lack of sound, cost-effective, environment-friendly fiber-matrix compounding processes; 4) incompatibility between natural fibers and polymer matrices; and 5) low heat-resistance of natural fibers and their composites. This dissertation systematically studied the use of kenaf bast fiber bundles, obtained via a mechanical retting method, as a light-weight reinforcement material for fiber-reinforced thermoset polymer composites for automotive applications. Kenaf bast fiber bundle tensile properties were tested, and the effects of locations in the kenaf plant, loading rates, retting methods, and high temperature treatments and their durations on kenaf bast fiber bundle tensile properties were evaluated. A process has been developed for fabricating high fiber loading kenaf bast fiber bundle-reinforced unsaturated polyester composites. The generated composites possessed high elastic moduli and their tensile strengths were close to specification requirements for glass fiber-reinforced sheet molding compounds. Effects of fiber loadings and lengths on resultant composites tensile properties were evaluated. Fiber loadings were very important for composite tensile modulus. Both fiber loadings and fiber lengths were important for composite tensile strengths. The distributions of composite tensile, flexural and impact strengths were analyzed. The 2-parameter Weibull model was found to be the most appropriate for describing the composite strength distributions and provided the most conservative design values. Kenaf-reinforced unsaturated polyester composites were also proved to be more cost-effective than glass fiber-reinforced SMCs at high fiber loadings. Kenaf bast fiber bundle-reinforced composites water absorption properties were tested. Surface-coating and edge-sealing significantly reduced composite water resistance properties. Encapsulation was a practical method to improve composite water resistance properties. The molding pressure and styrene concentrations on composite and matrix properties were evaluated. Laser and plasma treatment improved fiber-to-matrix adhesion. Advisors/Committee Members: Jilei Zhang (chair), Yibin Xue (chair), Charles U. Pittman, Jr. (committee member), Thomas E. Lacy Jr. (committee member), Hossein Toghiani (committee member), Mark F. Horstemeyer (committee member).

Subjects/Keywords: natural fiber-reinforced composites; Kenaf bast fiber bundles

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APA (6^th Edition):

Du, Y. (2010). AN APPLIED INVESTIGATION OF KENAF-BASED FIBER/POLYMER COMPOSITES AS POTENTIAL LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE COMPONENTS. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-05182010-212131/ ;

Chicago Manual of Style (16^th Edition):

Du, Yicheng. “AN APPLIED INVESTIGATION OF KENAF-BASED FIBER/POLYMER COMPOSITES AS POTENTIAL LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE COMPONENTS.” 2010. Doctoral Dissertation, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-05182010-212131/ ;.

MLA Handbook (7^th Edition):

Du, Yicheng. “AN APPLIED INVESTIGATION OF KENAF-BASED FIBER/POLYMER COMPOSITES AS POTENTIAL LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE COMPONENTS.” 2010. Web. 21 Feb 2019.

Vancouver:

Du Y. AN APPLIED INVESTIGATION OF KENAF-BASED FIBER/POLYMER COMPOSITES AS POTENTIAL LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE COMPONENTS. [Internet] [Doctoral dissertation]. Mississippi State University; 2010. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-05182010-212131/ ;.

Council of Science Editors:

Du Y. AN APPLIED INVESTIGATION OF KENAF-BASED FIBER/POLYMER COMPOSITES AS POTENTIAL LIGHTWEIGHT MATERIALS FOR AUTOMOTIVE COMPONENTS. [Doctoral Dissertation]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-05182010-212131/ ;

Mississippi State University

30. Fountain, Jason Elvin. MICROSTRUCTURE-BASED MULTISTAGE FATIGUE CHARACTERIZATION AND MODELING OF AN ACRYLONITRILE BUTADIENE STYRENE COPOLYMER.

Degree: MS, Mechanical Engineering, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112010-153246/ ;

► In this work, fatigue experiments and observations are used to experimentally and computationally quantify fatigue structure-property relationships and then capture these effects through a… (more)

Subjects/Keywords: Characterization; Polymer; ABS; Fatigue; MSF Model

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APA (6^th Edition):

Fountain, J. E. (2010). MICROSTRUCTURE-BASED MULTISTAGE FATIGUE CHARACTERIZATION AND MODELING OF AN ACRYLONITRILE BUTADIENE STYRENE COPOLYMER. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112010-153246/ ;

Chicago Manual of Style (16^th Edition):

Fountain, Jason Elvin. “MICROSTRUCTURE-BASED MULTISTAGE FATIGUE CHARACTERIZATION AND MODELING OF AN ACRYLONITRILE BUTADIENE STYRENE COPOLYMER.” 2010. Masters Thesis, Mississippi State University. Accessed February 21, 2019. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112010-153246/ ;.

MLA Handbook (7^th Edition):

Fountain, Jason Elvin. “MICROSTRUCTURE-BASED MULTISTAGE FATIGUE CHARACTERIZATION AND MODELING OF AN ACRYLONITRILE BUTADIENE STYRENE COPOLYMER.” 2010. Web. 21 Feb 2019.

Vancouver:

Fountain JE. MICROSTRUCTURE-BASED MULTISTAGE FATIGUE CHARACTERIZATION AND MODELING OF AN ACRYLONITRILE BUTADIENE STYRENE COPOLYMER. [Internet] [Masters thesis]. Mississippi State University; 2010. [cited 2019 Feb 21]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112010-153246/ ;.

Council of Science Editors:

Fountain JE. MICROSTRUCTURE-BASED MULTISTAGE FATIGUE CHARACTERIZATION AND MODELING OF AN ACRYLONITRILE BUTADIENE STYRENE COPOLYMER. [Masters Thesis]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112010-153246/ ;

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