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 7 of 7 for “"Statistical tolerance"”.
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Representation of geometric variations using matrix transforms for statistical tolerance analysis in assemblies
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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Software for analysis of three dimensional statistical tolerance propagation in assemblies using closed-form matrix transforms
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Geometric modeling of manufacturing processes variations for model-based tolerance analysis
In product design, tolerances are specified due to the inherent variabilities of manufacturing processes. Tolerance specifications have significant implications on the quality and cost of the product. For proper tolerance specification, tolerance analysis must be performed. Prototyping is the the …
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Maximum-likelihood-based confidence regions and hypothesis tests for selected statistical models.
We apply maximum likelihood methods for statistical inference on parameters of interest for three different types of statistical models. The models are a seemingly unrelated regression model, a bivariate Poisson regression model, and a model of two inversely-related Poisson rate parameters with …
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Fabrication Refinements of Advanced Packaging Techniques for Medium-Voltage Wirebond-less Multi-Chip Power Modules
… modules with low inductances; however, they have tolerance variation from manufacturing and bondline thicknesses, which become problematic for multi-chip power modules with an increased number of die and posts. The variation results in tilt, causing some posts to disconnect altogether. …
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Application of First Principle Modeling in Combination with Empirical Design of Experiments and Real-Time Data Management for the Automated Control of Pharmaceutical Unit Operations
… process for strict control of process inputs. Tolerance surfaces provided the ideal tool for determining design spaces that assured the reduction of manufacturing risk among all future batches, and the information gained using small scale experimentation was leveraged to provide efficient …
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Variation Simulation of Fixtured Assembly Processes for Compliant Structures Using Piecewise-Linear Analysis
… This thesis introduces a new method to statistically analyze compliant part assembly processes using fixtures. This method, consistent with the FASTA method developed at BYU, yields both a mean and a variant solution. The method, called Piecewise-Linear Elastic Analysis, or PLEA, is …