Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Probabilistic design"”.
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Probabilistic design for emerging memory and nanometer-scale logic
… classes of problems that require the use of probabilistic methods and models: (1) Modeling and exploiting stochastic behavior in advanced memory technologies; (2) Probabilistic modeling of faults due to on-chip voltage variation. This dissertation first investigates the unique physics-level …
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Stochastic J-integral and realiability of composite laminates based on a computational methodology combining experimental investigation, stochastic finite element analysis and maximum entropy method
… the crack length has been conducted. Relevant design aspects are synthesized based on the parametric study. The significance of the J -Integral in more accurately describing and quantifying the stochastic characteristics of fracture behavior than the ERR and the SIF is established. The …
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Analytical and experimental comparison of deterministic and probabilistic optimization
The probabilistic approach to design optimization has received increased attention in the last two decades. It is widely recognized that such an approach should lead to designs that make better use of the resources than designs obtained with the classical deterministic approach by distributing …
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Quantification of prestressed concrete railway crosstie flexural response: Implications for mechanistic design
… development and implementation of a structural design method that enables optimization of crosstie design for varied applications and loading environments will reduce initial capital cost and recurring maintenance expense. Center flexural cracking is one of the most common factors limiting the …
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Bringing Probabilistic Real-Time Guarantees to the Real World
… not accurate enough to provide precise and tight probabilistic guarantees. Fortunately, for such applications we have verified that the computation time is more faithfully described by a Markov model. Hence, we propose a procedure based on the theory of hidden Markov models to extract the …
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Load and resistance factor design for wood structures
Uncertainties in engineering design exist due to the random nature of loads and materials, lack of knowledge, and imperfect modelling of design parameters. Conventional design methods based on deterministic procedures do not always yield designs having consistent safety. In recent years …
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Stochastic analysis of structures made of composite materials
A probabilistic methodology for the reliability analysis of composite rotor blades at the ply level was developed. The proposed methodology involves (i) the quantification of the uncertainties (physical, statistical and model) related to the material properties and the extreme aero-elastic loads …
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Probabilistic finite element analysis of the uncemented total hip replacement
… a total hip replacement(THR), such as prosthesis design and material properties, applied loads, surgical approach, femur size and quality, interface conditions etc. All these factors are subject to variation and therefore uncertainties have to be taken into account when designing and analysing the …
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Flexibility for improved design : probabilistic quasi-optimization of building life cycle impacts and costs
In order to design buildings with reduced environmental impacts, it is important to analyze and compare a variety of design alternatives starting at early stages of the design process. This dissertation discusses the development of a probabilistic life cycle assessment (LCA) methodology for …
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A reliability based design procedure for wood pallets
… United States, recognized a need for a rational design methodology, based upon engineering principles, to ensure consistent safety and economy in pallets of any geometry. To satisfy this need a cooperative research project between Virginia Tech, the U. S. Forest Service, and the National Wooden …
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Design sea levels for Southern Africa : a probabilistic approach
… a methodology for the quantitative assessment of design sea levels for southern Africa. In order to achieve this objective it was necessary to establish which ocean processes affected sea level in the sub-continent and develop a probabilistic model for the combination thereof. The methodology, is …
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Post-Earthquake Damage Repair and Probabilistic Damage Control Approach for Reinforced Concrete Bridges
… carbon fiber reinforced polymers (CFRP) and probabilistic damage control approach (PDCA) for reinforced concrete (RC) bridges. To develop repair methods, first repair objectives were defined. To define repair objectives, internal earthquake damage was quantified and correlated to a series of …
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Risk Analysis and Reliability Improvement of Mechanistic-Empirical Pavement Design
… used in the Mechanistic Empirical Pavement Design Guide (MEPDG) is a congregated indicator defined as the probability that each of the key distress types and smoothness will be less than a selected critical level over the design period. For such a complex system as the MEPDG which does not …
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An Efficient Method to Assess Reliability under Dynamic Stochastic Loads
… of dynamic large complex engineering systems. In design of real-life dynamic systems, there are significant uncertainties in modeling the input. For instance, for an offshore wind turbine, there are considerable uncertainties in the power spectral density functions of the wave elevations or the …