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.
Results
Showing 1 to 20 of 62 for “"Materials Selection"”.
-
Materials selection for microsystems actuators
The recent developments of novel thin film materials and their associated processes have marked the onset of change in the design philosophy of Micro-Electro- Mechanical Systems (MEMS) from process centric to performance centric. This presents an opportunity to improve the performance of MEMS …
-
Learning-Derived Cost Evolution in Materials Selection
Materials selection is a complex, but important, problem for manufacturing firms. Poor material choices can negatively affect the firm's market share or profits. In the face of this complexity, most selection methods make a number of simplifications, including limiting problem scope to selection …
-
A cluster analysis method for materials selection
Materials have typically been selected based on the familiarities and past experiences of a limited number of designers with a limited number of materials. Problems arise when the designer is unfamiliar with new or improved materials, or production processes more efficient and economical than past …
-
Materials selection and processing for reliable neural interfaces
The understanding of the brain would be revolutionized by a tool that can measure intra- and extra-cellular electrical potentials on a parallelized scale, without disrupting the neural physiology. Existing technologies do not sufficiently carry out these functions. Using a thermal drawing process …
-
Light-weight materials selection for high-speed naval craft
… analysis study was conducted on the process of materials selection for high-speed naval craft using the Modified Digital Logic (MDL) method proposed by B. Dehgham-Manshadi et al in ref [17]. The purpose is to show how this method along with Ashby's material selection process can be integrated to …
-
Application of multi-attribute utility analysis to problems in materials selection
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Material Science and Engineering, 1985.
-
Multiattribute utility analysis of materials selection decisions by Deborah Lee Thurston.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1987.
-
The role of demand uncertainty in materials selection : a case study on aluminum recycling
… shortfall is the use of secondary, or recycled, materials which provides both economic and environmental benefits. The increased use of secondary materials is limited by numerous factors; one such factor of concern is uncertainty. One form of uncertainty that all producers face is consumer …
-
The wear of materials in an ash conditioner
… carried out in situ using a variety of generic materials. A ranking order of wear performance has been established both as a function of material and operating costs, and it has been demonstrated that impressive cost savings can be effected by the use of ceramic-coated steel mixing blades. The …
-
Multilayer composite photonic bandgap fibers
Materials and fabrication techniques are developed that lead to the successful fabrication of multilayer composite photonic bandgap fibers. The pertinent background in electromagnetic theory of multilayer dielectric mirrors and optical fibers is surveyed. Materials properties constraints are …
-
Failure and Fracture of Thin Film Materials for MEMS
… MEMS, which could be directly applied to perform materials selection and design of MEMS components. The experimental methods described in this thesis were shown to be entirely repeatable and directly applicable to any thin film material. Consequently, they represent a protocol with the potential …
-
Compilation of a materials cost database for a web-based composites cost estimator
The production of composite materials continues to be an expensive process. The WEB-Based Cost Estimation Model enables one to approximate the cost of manufacturing composites, so as to assist the user in making sound economic decisions. An extensive, up-to-date materials database is an essential …
-
A study of optimal automotive materials choice given market and regulatory uncertainty
… the competitiveness of lightweight alternative materials relative to incumbent steels. To test this hypothesis, a novel automotive materials selection methodology was developed which evaluates the net present value (NPV) of vehicle projects by incorporating five integrated models: (1) an …
-
Materials design and discovery of catalysts for small molecule conversion
… hindered by a lack of guiding principles for materials selection and design, especially for increasingly complex materials systems such as oxides. This has stemmed from a lack of systematic studies of surface reactivity at thermodynamic conditions relevant to the reaction of interest and …
-
An Experimental Study Of Atomic Scale Friction And Adhesion For 2d And Layered Materials: The Effects Of Interfacial Contact, Compliance, And Commensurability
… for millennia, trial-and-error approaches to materials selection for sliding systems remain prevalent due to a lack of understanding of the underlying mechanisms of friction. This thesis discusses uses of atomic force microscopy to probe the atomic-scale mechanisms that drive frictional …
-
Simplifying tea steeping : design innovation driven by user needs
… through system architecture, form factor, and materials selection. A method of steeping a concentrate to minimize brew chamber size was developed. The automated single-serve device proposed brews tea at the required temperature and time to allow users to enjoy the best flavor out of their tea …
-
First-Principles Studies of Electronic, Optical and Defect Properties of Photovoltaic Materials
… technology depends heavily on the development of materials. However, how to select the best materials for a specific purpose — i.e. materials selection, is a tricky problem in academia, industry, and our daily lives. Recently, because of the rapid development of computers, ab initio theoretical …
-
A methodology and support tool for environmentally conscious design and manufacture.
… of LCA principles into current design and materials selection procedures, and thus completion of the improvement stage, is a task which needs addressing. Methods exist in the form of frameworks, guidelines, matrices and computer based tools, but all have drawbacks and 'blind spots'.This …
-
Measuring sustainability perceptions of construction materials
… in order to meet owner's concerns. Material selection has been identified as an area where designers and contractors can have a significant impact on the sustainable performance of a building. Objective factors such as design considerations and cost constraints can play a role in the …
Page 1 of 4