The use of compliant coatings, in particular polyurea, for improved blast protection of structures has been reported recently in the literature. The goal of this research is to develop a comprehensive understanding of the reasons for improved performance of coated structures through experimentation and correlation with simulation. The different factors influencing the response of an elastomer coated ductile metal subjected to a blast load have been examined and quantified. First, dynamic strain localization in the metal is a precursor to ductile failure; this was characterized for the metal of interest with and without the polymer coating. Experiments with the expanding ring/tube and experiments have demonstrated that for Al 6061-O and Al 3003-H14, the localization strain is unaffected by both deformation rate and the polymer coating; however, two important effects of the coating have been explored. First the additional mass of the coating provides an inertial resistance. Second, the flow resistance of the polymer provides continued dissipation of energy even after the metal has yielded potentially preventing failure in the metal, or at least containing fragments. These effects were examined for two different types of polymers – polyurea, an elastomer and polycarbonate, a thermoplastic shear yielding polymer. It is shown that these two effects can be used to tailor the coating to optimize blast protection of the bilayer system. In order to take advantage of this optimization, the constitutive behavior of the elastomer coating must be determined at strain rates and loading conditions that are experienced in the blast loading; these strain rates are in the range of 1000 to 10,000 per second. This has been accomplished through a hybrid method that combines measurements with numerical simulations to extract the constitutive response of the material. The strain rate dependent behavior of polyurea for rates in the range of 800-8000 per second has been determined by measuring the spatio-temporal evolution of the particle velocity and strain in a thin strip subjected to high speed impact loading that generates uniaxial stress conditions and comparing this with numerical simulations of the one-dimensional problem using the method of characteristics. A similar scheme to track the particle velocity and strain during the axisymmetric deformation of a membrane subjected to high speed loading has also been developed; this requires two projections of the deformation to be obtained in order to facilitate the measurement of axial and kink waves in the membrane. The finite volume method is adapted for simulations of these dynamic uniaxial and axisymmetric problems with a view towards simulating shock waves that are expected to form in some loading conditions. The hybrid method is used once again to characterize the constitutive response. The axisymmetric experiments have demonstrated the inability of the uniaxial models for both polyisoprene rubber and polyurea to completely capture their behavior during a more complex loading, and left a need for further work on characterizing the dynamic constitutive response of these polymers. / text

A. B. Simpson / Charles Spurgeon / Andrew Murray / Oswald Chambers / George Muller / Hudson Taylor / John MacMillan / A. W. Tozer / Kenneth Hagin / Kenneth Copeland / Frederick K. C. Price / E. M. Bounds / Amy Carmichael / Phoebe Palmer / This thesis is a study of nineteenth and twentieth century faith theology and praxis, seeking to determine a balanced, healthy faith that is both sound in theology and effective in practice. Part 1 presents a history and sources of Faith Teaching and Practices. It first looks historicalty at the roots of later faith teaching and practice by presenting a sampling of teachings on faith from early church fathers, reformers, mystics, and Pietists. These form the foundation for the movements of faith in the nineteenth and early twentieth centuries--the classic faith teaching, followed by the modern faith movement and leaders. Part 2 deals with the foundational issues of faith teaching and practice: the relationship of faith to the supernatural, the concept of the inheritance of the believer and the practice of claiming the promises of God, the nature of faith, and the authority of the believer and its inferences for faith praxis. Part 3 investigates seven major theological issues of faith teaching and practice: faith as a law and force, the object and source of faith, the relationship of faith and the will of God, distinguishing between a logos and a rhema word of God, the concepts of revelation and sense knowledge, the doctrine of healing in the atonement, the question of evidence of the baptism in lhe Holy Spirit. Part 4 examines major practical issues of faith teaching and practice about which controversy swirls: positive mental attitude and positive confession; issues of discernment in acting upon impressions, voices, revelations, and "words from the Lord;" questions of failh regarding sickness and healing, death, doctors and medicine; the relationships between sickness, suffering, healing, and sanctification; and prosperity. Part 5 reflects upon these issues and comes to final conclusions regarding: the role of hermeneutics in determining failh theology and praxis, how to handle unanswered prayers and apparent failures of faith, the seeming paradox and tension between claiming one's inheritance and dying to self, a summary of practical conclusions for exercise of healthy faith, and final conclusions and recommendations on developing a sound theology and practice of faith for the twenty-fist century. / Practical Theology / D.Th. (Practical Theology)

A. B. Simpson / Charles Spurgeon / Andrew Murray / Oswald Chambers / George Muller / Hudson Taylor / John MacMillan / A. W. Tozer / Kenneth Hagin / Kenneth Copeland / Frederick K. C. Price / E. M. Bounds / Amy Carmichael / Phoebe Palmer / This thesis is a study of nineteenth and twentieth century faith theology and praxis, seeking to determine a balanced, healthy faith that is both sound in theology and effective in practice. Part 1 presents a history and sources of Faith Teaching and Practices. It first looks historicalty at the roots of later faith teaching and practice by presenting a sampling of teachings on faith from early church fathers, reformers, mystics, and Pietists. These form the foundation for the movements of faith in the nineteenth and early twentieth centuries--the classic faith teaching, followed by the modern faith movement and leaders. Part 2 deals with the foundational issues of faith teaching and practice: the relationship of faith to the supernatural, the concept of the inheritance of the believer and the practice of claiming the promises of God, the nature of faith, and the authority of the believer and its inferences for faith praxis. Part 3 investigates seven major theological issues of faith teaching and practice: faith as a law and force, the object and source of faith, the relationship of faith and the will of God, distinguishing between a logos and a rhema word of God, the concepts of revelation and sense knowledge, the doctrine of healing in the atonement, the question of evidence of the baptism in lhe Holy Spirit. Part 4 examines major practical issues of faith teaching and practice about which controversy swirls: positive mental attitude and positive confession; issues of discernment in acting upon impressions, voices, revelations, and "words from the Lord;" questions of failh regarding sickness and healing, death, doctors and medicine; the relationships between sickness, suffering, healing, and sanctification; and prosperity. Part 5 reflects upon these issues and comes to final conclusions regarding: the role of hermeneutics in determining failh theology and praxis, how to handle unanswered prayers and apparent failures of faith, the seeming paradox and tension between claiming one's inheritance and dying to self, a summary of practical conclusions for exercise of healthy faith, and final conclusions and recommendations on developing a sound theology and practice of faith for the twenty-fist century. / Philosophy, Practical and Systematic Theology / D.Th. (Practical Theology)

This thesis is a study of nineteenth and twentieth century faith theology and praxis, seeking to determine a balanced, healthy faith that is both sound in theology and effective in practice, Part 1 presents a history and sources of Faith Teaching and Practices. It first looks historically at the roots of later faith teaching and practice by presenting a sampling of teachings on faith from early church fathers, reformers, mystics, and Pietists. These form the foundation for the movements of faith in the nineteenth and early twentieth centuries-the classic faith teaching, followed by the modern faith movement and leaders. Part 2 deals with the foundational issues of faith teaching and practice: the relationship of faith to the supernatural, the concept of the inheritance of the believer and the practice of claiming the promises of God, the nature of faith, and the authority of the believer and its inferences for faith praxis. Part 3 investigates seven major theological issues of faith teaching and practice: faith as a law and force, the object and source of faith, the relationship of faith and the will of God, distinguishing between a logos and a rhema word of God, the concepts of revelation and sense knowledge, the doctrine of healing in the atonement, the question of evidence of the baptism in the Holy Spirit. Part 4 examines major practical issues of faith teaching and practice about which controversy swirls: positive mental attitude and positive confession; issues of discernment in acting upon impressions, voices, revelations, and "words from the Lord;" questions of faith regarding sickness and healing, death, doctors and medicine; the relationships between sickness, suffering, healing, and sanctification; and prosperity. Part 5 reflects upon these issues and comes to final conclusions regarding: the role of hermeneutics in determining faith theology and praxis, how to handle unanswered prayers and apparent failures of faith, the seeming paradox and tension between claiming one's inheritance and dying to self, a summary of practical conclusions for exercise of healthy faith, and final conclusions and recommendations on developing a sound theology and practice of faith for the twenty-first century. / Philosophy, Practical & Systematic Theology / D.Th. (Practical Theology)

This thesis is a study of nineteenth and twentieth century faith theology and praxis, seeking to determine a balanced, healthy faith that is both sound in theology and effective in practice, Part 1 presents a history and sources of Faith Teaching and Practices. It first looks historically at the roots of later faith teaching and practice by presenting a sampling of teachings on faith from early church fathers, reformers, mystics, and Pietists. These form the foundation for the movements of faith in the nineteenth and early twentieth centuries-the classic faith teaching, followed by the modern faith movement and leaders. Part 2 deals with the foundational issues of faith teaching and practice: the relationship of faith to the supernatural, the concept of the inheritance of the believer and the practice of claiming the promises of God, the nature of faith, and the authority of the believer and its inferences for faith praxis. Part 3 investigates seven major theological issues of faith teaching and practice: faith as a law and force, the object and source of faith, the relationship of faith and the will of God, distinguishing between a logos and a rhema word of God, the concepts of revelation and sense knowledge, the doctrine of healing in the atonement, the question of evidence of the baptism in the Holy Spirit. Part 4 examines major practical issues of faith teaching and practice about which controversy swirls: positive mental attitude and positive confession; issues of discernment in acting upon impressions, voices, revelations, and "words from the Lord;" questions of faith regarding sickness and healing, death, doctors and medicine; the relationships between sickness, suffering, healing, and sanctification; and prosperity. Part 5 reflects upon these issues and comes to final conclusions regarding: the role of hermeneutics in determining faith theology and praxis, how to handle unanswered prayers and apparent failures of faith, the seeming paradox and tension between claiming one's inheritance and dying to self, a summary of practical conclusions for exercise of healthy faith, and final conclusions and recommendations on developing a sound theology and practice of faith for the twenty-first century. / Philosophy, Practical and Systematic Theology / D.Th. (Practical Theology)