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61	A review of the impact of Canadian law, policy and P3 practice on the case for procuring capital-intensive infrastructure services via P3s Jatto, Lucky Bryce Jr 02 September 2011 (has links) This dissertation investigates the advantages of procuring capital-intensive infrastructure services via Public-Private Partnerships (P3s or PPPs) – cost and time savings and; innovation and high levels of efficiency – accounting for these advantages by reference to the underlying legal provisions and principles that facilitate them; and in this process highlights two significant directions in which Canadian P3 law, policy and practice has evolved – the enactment of P3 legislation and/or the formulation of non-statutory P3-related policy; as well as the establishment of legal institutions that promote and/or facilitate P3 procurements. The dissertation also addresses key arguments raised against P3s, by reference to aspects of Canadian law, policy and P3 practice. The research methodology comprises a detailed review of legal and non-legal sources. The implication of the research findings is that, given the foregoing developments in Canadian P3 law, policy and practice, the key arguments canvassed against P3s are overstated and lacking in merit. P3s PPPs P3 PPP PFI AFP PFIs AFPs infrastructure procurement investment private public public-private private-public policy law units conventional contract legislation statute case partnerships BOT BOO BOOT DBFM DBFO Operate finance project BF DBM DBOM partnership DBFOM concession concessions JVA JVAs O&M/M O&M BBO DB BT VfM risk penalties public-private partnerships
62	<b>An Integrated Physics-Based Multiscale Modeling Framework for Advancing Thermoset Composites Manufacturing Processes</b> Ryan Scott Enos (20449379) 19 December 2024 (has links) <p dir="ltr">The manufacturing of composite materials presents numerous opportunities due to their superior properties, including high strength-to-weight ratios and excellent fatigue resistance, which make them ideal for advanced engineering applications. However, realizing these advantages is challenging due to complexities in manufacturing processes, which can introduce defects, residual stress, and variability. This study aims to address these challenges through the development of integrated, physics-based processing models that are capable of predicting and mitigating manufacturing defects in advanced composites. The research focuses on the integration of these physics-based models with data-driven methods such as statistical analysis, uncertainty quantification, and optimization. A significant emphasis is placed on modeling the thermo-viscoelastic (TVE) behavior of curing composites, which is often simplified in processing simulations due to computational costs, by approximating to elastic responses according to the Cure Hardening Instantaneously Linear Elastic (CHILE) model. Results show that cure-dependent TVE process simulations implemented through Finite Element Analysis (FEA) can be efficiently integrated with optimization algorithms. 570 simulations completed in 109 min on a local desktop computer. Building on these advancements, this work further investigates Automated Fiber Placement (AFP) under the context of Integrated Computational Materials Engineering (ICME), and establishes the groundwork and serves as roadmap for AFP research at Purdue University with a focus on process modeling and integration.</p> Aerospace materials Aerospace structures Composite and hybrid materials Process modeling Manufacturing Composites Thermo-viscoelasticity Multi-scale modeling Multi-physics modeling ICME PSPP Thermoset Automated Fiber Placement AFP Optimization Finite Element Analysis FEA Abaqus User-material UMAT Genetic algorithm Process optimization Liquid composites molding Autoclave RTM VARTM LCM Permeability Infusion STAR-CCM+ CFD PAM-RTM Parametric modeling CVM

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A review of the impact of Canadian law, policy and P3 practice on the case for procuring capital-intensive infrastructure services via P3s

<b>An Integrated Physics-Based Multiscale Modeling Framework for Advancing Thermoset Composites Manufacturing Processes</b>