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Materials Science and Engineering Commons™
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- Keyword
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- 3rd Generation AHSS (1)
- Austempering (1)
- Bainite (1)
- Biomaterials and Tissue Engineering (1)
- Carbide free bainitic steel (1)
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- Chitosan Scaffolds (1)
- Computational Material Science (1)
- Creep (1)
- Cross-linked polymers (1)
- Fracture Toughness (1)
- Glycosaminoglycans (1)
- Hepatocyte Transplantation (1)
- Low Carbon Low alloy steel (1)
- Mesenchymal Stem Cells (1)
- Microencapsulation and hydrogels (1)
- Micromechanics (1)
- Nickel-Metal Hydride Batteries (1)
- PMI foam (1)
- Point Defects (1)
- Rheology (1)
- Stress relaxation (1)
Articles 1 - 4 of 4
Full-Text Articles in Materials Science and Engineering
Rheology Of Cross-Linked Polymers And Polymer Foams: Theory And Experimental Results, John Herman
Rheology Of Cross-Linked Polymers And Polymer Foams: Theory And Experimental Results, John Herman
Wayne State University Dissertations
Typical polymers have a time-dependent response to loading which results in stress relaxation or creep. Models using springs/dashpots or Volterra integrals are capable of predicting the material response, but place little or no emphasis on the reasoning behind the response. This research proposes a microscopic reasoning behind polymer chain movement, while developing a model to predict the creep and stress relaxation of a polymer foam. Based on the theorized slip/stick of polymer chains as they slide past each other, this model successfully predicts the behavior of a PMI polymer foam under tensile loads. This model lends insights into polymer microscopic …
Development Of Scaffold Architectures And Heterotypic Cell Systems For Hepatocyte Transplantation, Dalia Alzebdeh
Development Of Scaffold Architectures And Heterotypic Cell Systems For Hepatocyte Transplantation, Dalia Alzebdeh
Wayne State University Dissertations
In vitro assembly of functional liver tissue is needed to enable the transplantation of tissue-engineered livers. In addition, there is an increasing demand for in vitro models that replicate complex events occurring in the liver. However, tissue engineering of sizable implantable liver systems is currently limited by the difficulty of assembling three dimensional hepatocyte cultures of a useful size, while maintaining full cell viability, an issue which is closely related to the high metabolic rate of hepatocytes. In this study, we first compared two designs of highly porous chitosan-heparin scaffolds seeded with hepatocytes in dynamic perfusion bioreactor systems. The aim …
Development Of High Strength High Toughness Third Generation Advanced High Strength Steels., Codrick John Martis
Development Of High Strength High Toughness Third Generation Advanced High Strength Steels., Codrick John Martis
Wayne State University Dissertations
Third generation advanced high strength steels (AHSS's) are emerging as very important engineering materials for structural applications. These steels have high specific strength and thus will contribute significantly to weight reduction in automotive and other structural component. In this investigation two such low carbon low alloy steels (LCLA) with high silicon content (1.6-2wt %) has been developed. These two steel alloys were subjected to single step and two step austempering in the temperature range of 260-399oC to obtain desired microstructures and mechanical properties. Austempering heat treatment was carried out for 2 hours in a molten salt bath. The microstructures were …
First-Principles Point Defect Models In Zr7ni10 And Zr2ni7 Binary Intermetallic Compounds And Their Implications In Nickel-Metal Hydride Batteries, Diana Felicia Wong
First-Principles Point Defect Models In Zr7ni10 And Zr2ni7 Binary Intermetallic Compounds And Their Implications In Nickel-Metal Hydride Batteries, Diana Felicia Wong
Wayne State University Theses
Zr-Ni-based alloys as nickel-metal hydride battery anode materials offer low-cost, flexible and tunable battery performance. Zr7Ni10 is an important secondary phase found in multi-phased AB2 Laves-phase-based metal hydride alloys, and the synergetic effect between the Zr-Ni and the Laves phases allows access to the high hydrogen storage of the Zr-Ni phases despite the lower absorption/desorption kinetics. Zr7Ni10 displays a small solubility window for Zr-rich compositions, while Zr2Ni7, with no solubility window, shows poor capacity with good kinetics. Stability of point defects within the crystal structure allows Zr7Ni10 to maintain the same structure at off-stoichiometric compositions, thus it is theorized that …