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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 36 for “"modulus of rupture"”.
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Effect of dynamic loading on bending modulus of rupture of Eastern spruce
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1944
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Strength Properties of Juvenile and Mature Wood of Twelve Families of Loblolly Pine (Pinus Taeda L.)
<p>The wood mechanical properties of progeny from twelve open-pollinated parent trees were examined. Six families were from parents which had high wood specific gravity and six were from parents which had low wood specific gravity. Thirty-two-year-old trees, that had been planted at Many, …
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Study of nickel-plated iron powder for powder metallurgical applications.
The use of coated iron-nickel powders in the production of sintered components of low-alloy steels has certain advantages over blended mixtures of the elemental powders. In particular, the former produce a more homogeneous material after a specific sintering treatment.There is a limited amount of …
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Flexural behavior of a glass fiber reinforced wood fiber composite
The static and dynamic flexural properties of a wood fiber matrix internally reinforced with continuous glass fibers were investigated. When modelled as a sandwich composite, the static flexural modulus of elasticity (MOE) of glass fiber reinforced hardboard could be successfully predicted from the …
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The effect of sintering temperature on potassium feldspar addition into claytan porcelain
Porcelain is one of the most complex ceramic materials composed mainly of kaolin, quartz and feldspar. Its diverse applications include tableware, whiteware and insulators. This study was performed to investigate the effects of different sintering temperature on Claytan porcelain with the addition …
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Effect of palm oil waste and quarry dust on the properties of hybrid blocks
… an increasing environmental concern. Recycling of quarry dust and palm oil wastes like the palm oil fuel ash and the palm oil clinker as building materials appeared to be a viable solution to such a pollution problem and the problem of buildings' economic design. Therefore, this research is the …
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Chemical, physical and mineralogical properties associated with the hardening of some South African fly ashes
… about 22 million tons being produced in 1994, of which only about 1 million tons is utilised, the remainder requiring disposal as waste. Various environmental impacts are associated with the disposal of fly ash in surface impoundments, including loss of usable land, contamination of …
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Measuring particle alignment in particleboard and predicting selected mechanical properties of oriented boards
… gaussian. This approach has the advantage of characterizing the degree of orientation by specifying only one parameter. A method was developed to measure the orientation of particles in particleboard "in situ", and to express the orientation in terms of the direction distribution functions. …
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In situ determination of strength and stiffness of structural lumber and composite products
… inspected to ensure the strength and stability of the structure. Historically these inspection methods have consisted of visual inspections lacking scientific basis.;Non-destructive testing (NDT) methods were investigated by this research for the possibility of evaluating modulus of rupture and …
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Stress concentration around dowel bars in jointed rigid concrete pavements
In this study, the magnitude and state of stresses induced around dowel bars were identified through detailed 3D Finite Element (3DFE) modeling of dowel jointed rigid pavement structures. Both straight and skewed joints were modeled using extremely fine meshing that allows accurate modeling of the …
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Corrosion resistance of modified β-Eucryptite
The corrosion resistance of chemically modified β-eucryptite (Li<sub>0.41</sub>Mg<sub>0.035</sub>AlP<sub>0.52</sub>Si<sub>0.48</sub>0₄) having low expansion anisotropy and a near zero coefficient of thennal expansion was evaluated. Samples were exposed to aqueous hydrochloride acid at temperatures …
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ANALYSIS OF BRAZILIAN SPLIT CYLINDER USING THE STATE BASED PERIDYNAMIC LATTICE MODEL
… members deform discontinuously in the form of cracks and fracture. Continuum mechanics, which has dominated the field of solid mechanics over the years, does not handle such discontinuities. A material, as defined by continuum mechanics is that which is continuous and fills the space it …
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The sintering effection of time, temperature, and ZnO additions on (Ca₀.₆,Mg₀.₄)Zr₄(PO₄)₆ [CMZP] ceramics
The sintering of (Ca<sub>0.6</sub>,Mg<sub>0.4</sub>)Zr₄(PO₄)₆ powder (CMZP) synthesized via a new solid-state reaction method was investigated for application as a thermal barrier in next generation internal combustion engines. Specifically, CMZP is being considered as a potential material for the …
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Analysis of Strength Variation in Glass Due to Ion Exchange
The main goal of this project was to compare the changes in statistical variation and Weibull characteristics of the strength of glass rods as modified by heat treatment with and without an ion exchange bath. Several sample groups of 30 sodium borosilicate glass rod specimens were heat treated at …
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The development and characterization of lightweight (CA,MG) ceramics
… (P<sub>lightweight</sub>/p<sub>dense</sub>) of less than 0.35 by the polymer foam technique, and higher than 0.35 by the polymer powder technique. The polymer powder method forms an inhomogeneous pore structure having average pore sizes of 30-80 μm compared with the polymer foam method, which …
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Fiber Orientation Effects on the Fracture and Flexural Toughness of Extruded Fiber Reinforced Concrete for Additive Manufacturing
In this study, the mechanical properties of a fiber-reinforced cementitious composite (FRCC) were derived for specimens fabricated using two different methods of casting: conventional cast construction and pump-driven extrusion. Through the extrusion process, fibers are more likely to be oriented …
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A study on thermal conductivity of six unexplored Nigerian clays for possible refractory and insulating materials
… Nigerian clay based on the suitability of their chemical, physical, mechanical and thermal properties as refractories. Six clay deposit locations in Nigeria were selected namely Kpata, Riyom, Gombe, Aloji, Barkin-lade and Quan’pan. The samples were obtained through a two meters depth …
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Analysis of Stabilized Adobe in Rural East Africa
ABSTRACT ANALYSIS OF STABILIZED ADOBE IN RURAL EAST AFRICA Grace Ying Yu Chen This project seeks to assist people in rural East Africa by proposing sustainable building methods which implement affordable and durable adobe bricks for construction. Adobe, one of the oldest sustainable building …
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Suitability of Casuarina equisetifolia as utility poles in Senegal
The use of <i>Casuarina equisetifolia</i> trees grown in Senegal as utility poles was investigated as follows: (1) to determine the longitudinal air permeability of the species with regard to its treatability; (2) to determine the treatability of the wood using a full-cell process; (3) to determine …
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Investigation of UHPC Columns for Stress-Strain Behaviour, Economic and Environmental Feasibility
… 1995). The most notable characteristics of RPC are its mechanical properties, which are an “ultra high” compressive strength (𝑓′𝑐 ≥ 150 𝑀𝑃𝑎), a high flexural strength (modulus of rupture) (𝑓′𝑐𝑓 ≥ 30 𝑀𝑃𝑎) and a high Young’s (Elastic) modulus (𝐸 ≥ 50 𝐺𝑃𝑎). There seems to be a noticeable …
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