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 340 for “"Mechanical strength"”.
-
Numerical and experimental investigation of mechanical strength of spot welded joints
… the effect of dimensional parameters on the strength of welded joints. Systematic studies of inverse FE modelling approaches with different indenter types showed that there are a variety of materials with different stress-strain relationships but identical indentation curves for Vickers, …
-
Understanding the mechanical strength of microcapsules and their adhesion on fabric surfaces
… have desirable properties including optimum mechanical strength and capability to adhere on fabric surfaces after laundry. They should be strong enough to withstand a serious of engineering processes including pumping, mixing, drying etc, but be weak enough to be ruptured by consumers in …
-
Development of cell-laden hydrogels with high mechanical strength for tissue engineering applications
The development of materials with biomimetic mechanical and biological properties is of great interest for regenerative medicine applications. Hydrogels are a promising class of biomaterials due to several advantages, however, the mechanical weakness remains a critical challenge for applications as …
-
Manipulating the mechanical strength and biological stability of collagen-based scaffolds for tissue engineering
… by the cells of the body that will determine its strength and effectiveness as a scaffold. It has been shown that collagen for implantation is degraded more quickly than cells are able to synthesise new collagen, resulting in a rapid reduction in matrix strength. The collagen is broken down by …
-
PCP and conformational motifs: applications in predicting mechanical strength, allergenicity of proteins and vaccine design
… of amino acids that could be related to the mechanical strength of proteins, to the potential allergenicity of proteins and to the antigenic diversity of the envelope proteins of encephalitic alphaviruses. I engineered novel Immunoglobulin (Ig) domains of the muscle protein titin by …
-
Difference of the Mechanical Strength of Proximal Tibia according to Resection Distance from Joint Surface
PURPOSE: This study carried out to evaluate the mechanical strength of proximal tibia according to resection distance from joint surface and to use this data for total knee arthroplasty. MATERIALS AND METHODS: 20 cases of knee computed tomography images were obtained from knee osteoarthritis …
-
The role of type I collagen heterotrimers and homotrimers in mechanical strength and collagen cleavage
… of oim mice tendon and bone have shown reduced mechanical strength compared to normal mice. The relationship between the molecular content and the decrease in strength is, however, still unknown. In this thesis, we use a bottom-up molecular simulation approach to examine the role of type I …
-
Interfacial Mechanical Strength Characterization in Multilayered Materials via Nanoscale Impact and Nano Mechanical Raman Spectroscopy Experiments
A composite materials strength can significantly depend on the constitutive description of interfaces. A computational model of composite deformation should, therefore, incorporate interface constitutive behavior. These interfaces poses several challenges in studying them due their length scales of …
-
Telechelic Polyetherimides with Functionalized End Groups for Enhancement of Mechanical Strength, Flame Retardancy, and Optical Properties
… temperature or viscosity but also enhance the mechanical and flame retardancy. In addition, the yellow to amber color of PEIs limits its applications in high-tech fields such as microelectronics and optoelectronics. Thus, a fundamental study of how end group and molecular weight affect the …
-
Carbon Fiber Reinforced Lithium-Ion Battery Composites with Higher Mechanical Strength: Multifunctional Power Integration for Structural Applications
… bonding and adhesion between the layers. The mechanical and physical properties of carbon fiber reinforced polymers (CFRP) with electrospun multi walled carbon nano tubes (CNTs) have evidenced to possess higher mechanical strength incorporated between the layers of the composite prepreg than …
-
Genotypic differences in lodging and Mechanical strength in stalks and Peduncles of Pearl millet (Pennisetum glaucum (L.) R. Br.)
Differences were found in lodging and mechanical strength tests among pearl millets, pearl millet x Napier grass (PMxNG) lines, test crosses and sorghum. In 1987 field lodging ranged from 0 to 98%. Test crosses with PMxNG lines lodged worse on average than the millets or sorghum, but they were …
-
Genotypic differences in lodging and Mechanical strength in stalks and Peduncles of Pearl millet (Pennisetum glaucum (L.) R. Br.)
Differences were found in lodging and mechanical strength tests among pearl millets, pearl millet x Napier grass (PMxNG) lines, test crosses and sorghum. In 1987 field lodging ranged from 0 to 98%. Test crosses with PMxNG lines lodged worse on average than the millets or sorghum, but they were …
-
Evaluation of the Mechanical Strength of Bund Walls under the Catastrophic Failure of Storage Tanks via Fluid Structure Interaction
The catastrophic failure of storage tanks is a serious problem that can have disastrous effects on the environment, local community and the economy. Bund walls are structures used around storage tanks where hazardous substances are stored and handled for the purpose of retaining the losses in …
-
The genetic control of stem mechanical properties in Brassica Napus and Wheat
… what contributes to the genetic control of stem mechanical strength in important crop species, has potential for the improvement of lodging resistance. This may be particularly important given the recent interest in the exploitation of crop residues as feedstock for lignocellulosic ethanol …
-
Drug eluting prosthetic joints through drug cluster morphology control
… insufficient drug release, and insufficient mechanical strength. The gold standard of treatment uses antibiotic eluting bone cement which has a mechanical failure rate of 26-60 % within 49-54 months if used under load bearing conditions. Therefore, despite advances in orthopedic materials, …
-
Mechanical reinforcement of polyacrylamide hydrogels using pristine single-walled carbon nanotubes
… they commonly do not have sufficient mechanical strength required for artificial soft tissues. Here, the author fabricated reinforced PAAm hydrogels using single-walled carbon nanotubes as reinforcing materials. The fusion of SWCNTs and the PAAm matrix successfully generated …
-
Shear deformation of amorphous and nanocrystalline copper microstructures via atomistic simulation
… grain size. As grain size continues to decrease, mechanical strength peaks. As grain size further decreases, mechanical strength begins to decrease. As grain size approaches zero, the total structure is composed of an increasingly high percentage of grain boundaries, which exhibit the properties …
-
Study of mechanical effects of microfluidic channels in microneedles
… of the integrated microfluidic channels on the mechanical integrity of these probes. We have developed a set of tools to help us answer this question. We built an analytical model to predict the mechanical strength of a probe and used that backbone to answer the inverse question of what range of …
-
NOVEL SOFT SURFACES WITH INTERESTING SURFACE AND BULK MORPHOLOGY
… of an alternative route for improving mechanical strength of PDMS elastomers, conventionally known to have weak mechanical properties. The second study involves synthesis of a triblock copolymer comprising of four mutually immiscible phases, namely, soft segments comprising of fluorous …
-
Development and Structural Performance Assessment of Low-Carbon Concrete Using Recycled Concrete Aggregates and Secondary Materials
… was governed by the aggregate and mortar strength properties and relied significantly on the strength class of the resultant mixture with compressive/tensile strength reductions up to 41% observed. Mixture design optimization of LCC mixtures was found to improve the alignment of actual and …
Page 1 of 17