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 33 for “"Flexural Properties"”.
-
Damping and flexural properties of prestressed concrete members subjected to reversed cyclic loading
… results given in part two are used to define the properties of the idealized structure.
-
Effects of Friction Stir Welding on Polymer Microstructure
… parameters and the resulting microstructural and flexural properties of the welded joint. A series of four single parameter experiments were run. The parameters investigated were pin diameter, feedrate, shoe temperature, and pressure time. Butt welds were made in 6 mm thick stress-relieved …
-
The flexural strength and stiffness of eastern oak pallet shook
… conducted to provide information concerning the flexural behavior of oak pallet shook. This information is to be used in the development of a rational pallet design procedure. The investigation was designed to meet three basic objectives 1) to collect basic data concerning the flexural properties …
-
Low-Shrinkage Fiber-Reinforced Concrete for Infrastructure Construction and Rehabilitation
… to reduce shrinkage, enhance mechanical properties, and improve durability. The effect of fiber type (macro synthetic fiber, MSF; 5D steel fiber, 5D; 80% 3D + 20% short steel fibers; STST), SMMs, and plastic viscosity on bond strength and structural properties of beams was evaluated. Test …
-
Modification of Fused Filament Fabrication Printer to Print High Temperature Thermoplastics to Improve Z-Strength
… materials and improve the tensile and flexural properties. The FFF additive manufacturing (AM) process is inherently a non-isothermal thermoplastic welding process that leads to anisotropic material properties. A non-traditional method to improve the strength using an infrared quartz …
-
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 …
-
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 …
-
DESIGN AND PERFORMANCE OF SELF-CONSOLIDATING AND THIXOTROPIC ULTRA-HIGH-PERFORMANCE CONCRETE FOR INFRASTRUCTURE CONSTRUCTION AND REHABILITATION
… improved thixotropy. Tailoring the rheological properties of low yield stress UHPC can improve dispersion and orientation of steel fibers used in the design of UHPC, hence enhancing the tensile and flexural properties. Similarly, improving the thixotropy of UHPC can enable unique performance for …
-
Design and performance of cost-effective ultra-high performance concrete for prefabricated elements
… hybrid fibers, and nanomaterials with improved properties; (3) design prefabricated UHPC panels with fiber-reinforced polymers (FRP) for enhanced flexural properties of stay-in-place panels made with optimized UHPC; and (4) explore potential applications of such UHPC elements. The proposed …
-
Development of a new method for fibre reinforced rotational moulding
… to woven fabric. Mouldings were tested for flexural properties, impact properties and Inter Laminar Shear Strength. The best results were found for woven PP-Twintex fabric and PP/glass melt impregnated tape in polypropylene. In the latter case, the Flexural Modulus measured was the same as …
-
Development of bio-composite filaments for drinking straw application
… fibre and PLA as a filament and analyzing the properties for future manufacturing of drinking straws. Specifically, this proof-of-concept research focuses on manufacturing different bio-composite filaments and characterizing properties related to drinking straw’s functionality of strength and …
-
The structure and mechanical behavior of bamboo and bamboo products
… In this thesis, the structure and mechanical properties of dry bamboo tissue are related. Cellular level models are developed and explored, with a focus on density. Density is a practical parameter: it corresponds to weight, and places bamboo in the broader context of cellular solids. Bamboo …
-
Manufacture and rehabilitation of guardrail posts using composite fabrics
… and GFRP wrapped posts were tested for flexural properties. The experimental data were compared with published values. Unwrapped and GFRP wrapped posts were tested under dynamic loads to determine their natural frequencies. Free vibration tests of unwrapped, GFRP wrapped, and damaged …
-
Performance and Design of Extruded Fiber-Reinforced Mortar with Preferentially Aligned Fibers
… comprehensive investigation into the mechanical properties of fiber-reinforced concrete (FRC), focusing on fracture and flexural toughness properties, the impact of fiber orientation and distribution, and the evaluation of flexural models for predicting the behavior of functionally graded FRC. It …
-
Nano-filled Epoxy: Mechanical and Fire Behavior and Modeling of Nanocomposite Columns Under Fire
… With static mechanical tests the tensile and flexural properties of the nanocomposites are measured. Flammability tests made by cone calorimetry are used to determine the Heat Release Rate, Mass Loss Rate, time to ignition, to Peak of heat Release rate and to flameout, and total smoke and heat …
-
Spray deposition of cork reinforced polyester
… matrix. The material was tested for tensile and flexural properties following relevant ASTM standards. The material was found to have a tensile strength of 4.4 MPa and tensile modulus of 850 MPa. The flexural strength and modulus were 9 MPa and 830 MPa, respectively. Adding a fiberglass skin to …
-
Development of flexural design values for pallet shook
… of wood pallets requires estimates of average flexural properties of pallet lumber of many species and visual grades. The objective of this study was to develop procedures for estimating these design values for use in a first-order second-moment design format. Preliminary studies were performed …
-
Large deformation dynamic bending of composite beams
… events. All laminates exhibited bimodular properties. The compressive flexural moduli in some laminates was measured to be 1/2 the tensile flexural modulus. No simple relationship could be found among the measured ultimate failure strains of the different laminate types. Using empirically …
-
Assessment of nanoparticle emission of polypropylene, polyester and epoxy nanocomposites during automated drilling process.
… and ability to meticulously target material properties with great control and precision. Despite the beneficial properties, certain nanofillers have shown potential health risks and toxicity, to both humans and the environment. The use and introduction of these materials into the workplace …
-
Wave Propagation and Damage Characterization in Natural Fiber Hemp and LLDPE Composite
… the various mechanical, electrical and acoustic properties of such composites were explored. Natural fiber composites (NFCs) have few benefits over the traditional glass or carbon fiber composites such as light weight, low manufacturing cost and requiring less energy for production. NFC is also …
Page 1 of 2