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 20 of 85 for “"Design Cycle"”.
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Incorporating Computational Fluid Dynamics Into The Preliminary Design Cycle
… Industry often struggles with in the preliminary design of a product is Computational Fluid Dynamics (CFD). Some of the challenges presented by CFD are the time it takes to create a CAD model, generate a valid grid for analysis, obtain a solution, post-process results, and review the result. The …
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Low-Tip-Speed High-Torque Proprotor Noise Approximation for Design Cycle Analysis
… lower RPMs. Therefore, a proprotor system can be designed to exploit this characteristic potentially abating noise levels. This research performed noise approximations included with rotor aerodynamics for a single, electric-driven, hovering proprotor by creating a code meant to be used in design …
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Development of a design cycle for an additively manufactured aircraft rudder bracket
… of this study was to develop a robust process to design, manufacture and ensure specific quality attributes when manufacturing a component with AM for the aerospace industry. The main objectives of this study were to undertake a literature review identifying the importance of the development of AM …
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Application of continuous improvement methodologies and techniques in the Drug Design Cycle
… Development (R&D), specifically within the Drug Design Cycle (DDC). This is driven by the fact that the average development time for a drug is 10-15 years and drug discovery comprises 3-6 years of this. The DDC process is the main iterative drug discovery process for designing a compound, …
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A computer aided model for copy-and-paste editing in the industrial design cycle
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
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Preliminary Design of Blade and Disc Fixing for Aerospace Application using Multi-Disciplinary Approach
<p>The preliminary design phase of a turbine rotor has an important impact on the architecture of a new engine definition, as it sets the technical envelope of the product to be designed. Additionally, preliminary design cycle times are increasingly critical in capturing business opportunities in …
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Blending engineering modeling, industrial design, and physical prototyping in product design
Engineering simulation models, industrial design form models, and physical experimentation through prototypes are critical elements of successful product design. However, the three disciplines are disconnected and the direction of simulations, form models, and physical prototypes often diverge …
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Estimation of gene network parameters from imaging cytometry data
… biology from the perspective of the engineering design cycle, a concept ubiquitous across many engineering disciplines. First, an analysis of the state of the engineering design cycle in synthetic biology is presented, pointing out the most limiting challenges currently facing the field. Second, …
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Multivariable Robust Control of Nonlinear Systems With Application to an Electro -Hydraulic Powertrain
… industry can reduce the cost of the control design cycle by formalizing the procedure. Simultaneously, a superior overall system will result by taking advantage of the multivariable structure.
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Quantification of Mixing in Microchannels
… short time (or distance). For this purpose, many design options are being proposed in the literature. For example herringbone baffles at the bottom of a rectangular channel are commonly proposed to enhance mixing in a drug delivery device. To assess the effectiveness of such devices many …
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Using the principles of set-based design to realize ship design process improvement
Set-based design (SBD) is a relatively new complex product development method. Its use has been well researched in the automotive and aerospace industries and, although it requires an upfront investment in resources, it has been shown to reduce design cycle time, later stage rework, total ownership …
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Ship design with the human factor: evacuation and normal operations modelling in the ship design process
… of human factors and how they can impact ship design. Two different but related applications areas are considered; passenger ship evacuation analysis and naval vessel normal operations and evacuation analysis. In the first instance, this thesis investigates the impact of the current regulatory …
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Logic optimization of MOS networks
… complexity. There is thus an increasing need for designers to rely on the assistance of computer-aided design tools to provide a fast design turnaround and reduce design errors. Logic design (or logic synthesis) is one major step in the ASIC VLSI design cycle in which automation is playing an …
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Multidisciplinary optimization in aircraft design using analysis technology models
… yet simple procedure for identifying key design issues. It can be used both to investigate technology integration issues very early in the design cycle, and to establish the information flow framework between disciplines for use in multidisciplinary optimization projects using much more …
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Use of architectural-level primitives in system-level diagnosis and speed up of test vector generation
… circuit as the test vectors are used during the design, manufacture, system integration, and throughout the life-cycle of the circuit in order to detect the presence of defects. The very large scale integration (VLSI) test generation problem has been one of the most complex and time-consuming …
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Extracting dimensional geometric parameters from B-spline surface models
In an integrated design environment, the common thread between the different design stages is usually the geometric model of the part. However, the requirements for the geometric definition of the design is usually different for each stage. The transformation of data between these different stages …
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Development of VHDL behavioral models with back annotated timing
… the behavioral model. It generates a gate-level design of the model using the Synopsys Design Compiler. It extracts the values for the delays required from the gate-level design. It then back-annotates these values into the VHDL behavioral model. BACKANN is thus a design automation tool that …
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Physically inspired methods and development of data-driven predictive systems.
… of both science and art. Although the designer of a predictive system effectively follows a prescribed procedure, his domain knowledge as well as expertise and intuition in the field of machine learning are often irreplaceable. However, in many practical situations it is possible to …
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Automated design of composite plates for improved damage tolerance
An automated procedure for designing minimum-weight composite plates subject to a local damage constraint under tensile and compressive loadings has been developed. A strain based criterion was used to obtain fracture toughness of cracked plates under tension. Results of an experimental …
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Power-Hardware-In-The-Loop (Phil) Considerations and Implementation Methods For Electrically Coupled Systems
… simulations are increasingly useful for the design and validation of new products as well as for system interaction studies. In a PHIL simulation portions of a system are modeled in software and naturally coupled with actual hardware components with real power virtually exchanged at the …
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