scholarly journals Mechanical Properties Of Tensile And Bending Strength Analysis In Biocomposite [SAGOO/PMMA] Material

2019 ◽  
Vol 5 ◽  
Author(s):  
Ibnu Abdul Rosid ◽  
Ikbal Rizki Putra ◽  
Alva Edy Tontowi
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Strength Analysis ◽  
Tensile And Bending Strength

Effect of the Fibre Type on the Rheological and Mechanical Properties of Cementitious Composites for Thin Overlays

2018 ◽  
Vol 762 ◽  
pp. 362-367
Author(s):  
Arturs Lukasenoks ◽  
Rolands Cepuritis ◽  
Andrejs Krasnikovs
Keyword(s):  
Mechanical Properties ◽  
Rheological Properties ◽  
Bending Strength ◽  
Stability Index ◽  
Strength Loss ◽  
Cementitious Composites ◽  
Visual Stability ◽  
Single Crack ◽  
Fresh State ◽  
Tensile And Bending Strength

Polypropylene (PP), nylon and polyvinyl alcohol (PVA) micro-fibres with different geometries were used at 1 vol. % dosage to investigate rheological and mechanical properties of cementitious composites to be used for thin overlays. Slump-flow and visual stability index methods were used to characterise the rheological properties. Single crack tension and bending studies were carried out to evaluate the tensile and bending strength, as well as the post-cracking behaviour. The results show that fibre geometry (L/d ratio and specific surface area) has a pronounced influence on the fresh state rheological properties of the cementitious composites. The results also surprisingly indicated that the nylon fibres are able to significantly increase the pre-cracking tensile and bending strength. All tested composites showed tensile strain softening and insignificant deflection hardening after cracking and a major strength loss. The results indicate single crack tension method to be the most appropriate for evaluation of mechanical properties of cementitious composites used for thin overlays.

Mechanical Properties of Hemp-Reinforced Biomimicked Composites

2010 ◽  
Author(s):  
Martin Summe ◽  
Seyed Allameh
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Structural Material ◽  
Mechanical Testing ◽  
Bending Strength ◽  
Tensile And Bending Strength

Hemp-reinforced biomimicked composites (HRBC) were fabricated and tested under various mechanical testing configurations. The results were compared with the results of similar composites made with and without fiberglass reinforcement. In general, hemp reinforcement increases the tensile and bending strength of the composites. The tensile strength of the HRBC is greater than non-reinforced biomimicked composite (BC). However, this value is smaller than the tensile strength of fiberglass reinforced biomimicked composite (FRBC). The fracture toughness of HRBC was found to be close to that of FRBC, nearly seven times that of monolithic structural material.

Study on Mechanical Properties of GF/PVC with CPE and ACR

2013 ◽  
Vol 788 ◽  
pp. 81-84 ◽  
Author(s):  
Sha Sha Wang ◽  
Ke Juan Chen
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Glass Fiber ◽  
Bending Strength ◽  
Breaking Elongation ◽  
Tensile And Bending Strength ◽  
The Impact

Reinforce the strength of PVC by adding glass fiber, study the mechanical properties of PVC on different contents of glass fiber. With the increasing contents of glass fiber, the tensile and bending strength, impact strength are increased, but the breaking elongation is decreased. In order to further improve the toughness of PVC, do research on how to toughen the GF/PVC alloy, study the influence of CPE and ACR on GF/PVC. Use the method of blending modification of glass fiber, PVC and modifiers, significantly increase the impact strength and breaking elongation while maintaining the strength. Compare the influence of CPE and ACR on GF/PVC properties, make excellent strengthened PVC material.

Improvement of Gravelly Silty Sand Reinforced with Biaxial Bamboo Geogrid

2021 ◽  
Vol 1033 ◽  
pp. 183-189
Author(s):  
Alex Llauce ◽  
Gary Duran ◽  
Carlos Fernandez
Keyword(s):  
Mechanical Properties ◽  
Bearing Capacity ◽  
Carrying Capacity ◽  
Laboratory Tests ◽  
Bending Strength ◽  
Silty Sand ◽  
California Bearing Ratio ◽  
Sand Soil ◽  
Renewable Material ◽  
Tensile And Bending Strength

In this paper, performance of gravelly silty sand soil reinforced with geogrid are present and analyzed to improve the carrying capacity. For this, the geogrid was elaborated with a renewable material like bamboo with the same dimensions of polymer geogrids biaxial. This type of soil can be used for the construction of the sub-base and base of a pavement. California Bearing Ratio (CBR) tests was carried out to obtain the bearing capacity of the silty sand soil with and without bamboo geogrid. In addition, laboratory tests were carried out to obtain the mechanical properties of the bamboo. When comparing CBR results, an improvement in the bearing capacity was evidenced with the use of bamboo geogrid with a 20% increase in the carrying capacity. Finally, maximum tensile and bending strength of bamboo were 2000 kgf/cm2 and approximately 0.018 kgf/cm, respectively.

scholarly journals Initial results of local strength analysis of a fiber concrete plate by 4-point bending tests

2019 ◽  
Author(s):  
Oksana Goidyk ◽  
Heiko Herrmann
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Strength Analysis ◽  
Large Variability ◽  
Cracking Behavior ◽  
Large Plate ◽  
Softening Behavior ◽  
Four Point Bending ◽  
Local Strength ◽  
Fiber Concrete

The analysis of the post-cracking behavior of a large plate cast of fiber concrete shows a large variability due to the fiber alignment and dispersion. Therefore, one can expect, that the bending strength and other material parameters depend on the position in the plate. This means that the position the samples for testing are taken from may play a significant role in assessing the mechanical properties and strength of composite materials. Often, the investigation of fiber concrete properties have been performed by testing small size beams. The results can be influenced by the boundary restrictions, such as wall-effect, which influences the fiber distribution. In this study the four-point bending strength of beams cut out of a large plate was investigated, the results represent the local strength of the plate in this particular place. The fiber orientation and distribution have been evaluated by X-ray Computed Tomography and Image Analysis Method. The results of the experiments have shown that the position of the beam inside of a large-size plate has a strong influence on the mechanical properties and post-cracking behavior. The analysis of the obtained outcomes proposes the following conclusions: the beams that were located near the edges of the formwork have shown a strong, strain-hardening behavior, and the beams that were located on the way of the casting bucket (a zone of the high turbulence/perturbation/disturbance) have shown a weak, strain-softening behavior.

scholarly journals Analysis The Effect Of Internal Geometry On The Mechanical Properties Of Acrylonitril Butadiene Styrene (ABS) Materials Prepared Using 3D Printing

2021 ◽  
Vol 328 ◽  
pp. 07018
Author(s):  
Ivan Junaidy Abdul Karim ◽  
Sukiman B ◽  
Muhammad Fadly Hi. Abbas
Keyword(s):  
Mechanical Properties ◽  
Fused Deposition Modeling ◽  
Bending Strength ◽  
Control Sample ◽  
3D Printer ◽  
Original Design ◽  
Fused Deposition ◽  
Internal Geometry ◽  
Deposition Modeling ◽  
Tensile And Bending Strength

The process of research and refinement of Fused Deposition Modeling 3D Printer, surely contains many variables and parameters with the aim of generating a 3D object with the results and the level of accuracy approaching its original design and can be applied as the expected design. In addition to the effect of printer type on the FDM method, the filament material used as a filler to print 3D objects certainly has different mechanical and physical characteristics, thus allowing for different object results for each different filament material. This research was conducted to determine the effect of internal variations of its geometry and dimensions on the mechanical properties of ABS using a 3D Printer. The internal geometries that are varied are triangle and honeycomb, with variations in thickness for each geometry are 1 mm and 2 mm, and variations in the axis of symmetry are 4.5 mm and 9 mm. The results showed that the control sample had tensile and bending strength results that matched the ABS filament datasheet reference. Objects with an internal geometry triangle in the size 4.5 mm and 2 mm of thickness have better tensile and bending strength than honeycomb geometry.

Structure and properties of compact articles from high-alloyed iron powder with adding of boron nitride

2020 ◽  
pp. 39-48
Author(s):  
B. O. Bolshakov ◽  
◽  
R. F. Galiakbarov ◽  
A. M. Smyslov ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Grain Boundary ◽  
Bending Strength ◽  
Physical And Mechanical Properties ◽  
Operating Conditions ◽  
Structure And Properties ◽  
Steam Turbines ◽  
Friction Forces ◽  
Wide Range

The results of the research of structure and properties of a composite compact from 13 Cr – 2 Мо and BN powders depending on the concentration of boron nitride are provided. It is shown that adding boron nitride in an amount of more than 2% by weight of the charge mixture leads to the formation of extended grain boundary porosity and finely dispersed BN layers in the structure, which provides a high level of wearing properties of the material. The effect of boron nitride concentration on physical and mechanical properties is determined. It was found that the introduction of a small amount of BN (up to 2 % by weight) into the compacts leads to an increase in plasticity, bending strength, and toughness by reducing the friction forces between the metal powder particles during pressing and a more complete grain boundary diffusion process during sintering. The formation of a regulated structure-phase composition of powder compacts of 13 Cr – 2 Mо – BN when the content of boron nitride changes in them allows us to provide the specified physical and mechanical properties in a wide range. The obtained results of studies of the physical and mechanical characteristics of the developed material allow us to reasonably choose the necessary composition of the powder compact for sealing structures of the flow part of steam turbines, depending on their operating conditions.

scholarly journals Eco-Friendly, High-Density Fiberboards Bonded with Urea-Formaldehyde and Ammonium Lignosulfonate

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 220
Author(s):  
Petar Antov ◽  
Viktor Savov ◽  
Ľuboš Krišťák ◽  
Roman Réh ◽  
George I. Mantanis
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
High Density ◽  
Thickness Swelling ◽  
Formaldehyde Content ◽  
Uf Resin ◽  
Natural Wood ◽  
European Standards

The potential of producing eco-friendly, formaldehyde-free, high-density fiberboard (HDF) panels from hardwood fibers bonded with urea-formaldehyde (UF) resin and a novel ammonium lignosulfonate (ALS) is investigated in this paper. HDF panels were fabricated in the laboratory by applying a very low UF gluing factor (3%) and ALS content varying from 6% to 10% (based on the dry fibers). The physical and mechanical properties of the fiberboards, such as water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), internal bond strength (IB), as well as formaldehyde content, were determined in accordance with the corresponding European standards. Overall, the HDF panels exhibited very satisfactory physical and mechanical properties, fully complying with the standard requirements of HDF for use in load-bearing applications in humid conditions. Markedly, the formaldehyde content of the laboratory fabricated panels was extremely low, ranging between 0.7–1.0 mg/100 g, which is, in fact, equivalent to the formaldehyde release of natural wood.

scholarly journals Effect of Sintering Temperature on Microstructure and Mechanical Properties of Hot-Pressed Fe/FeAl2O4 Composite

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 422
Author(s):  
Kuai Zhang ◽  
Yungang Li ◽  
Hongyan Yan ◽  
Chuang Wang ◽  
Hui Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Hot Press ◽  
Microstructure And Mechanical Properties ◽  
Powder Particles ◽  
Hot Press Sintering ◽  
Sintering Method

An Fe/FeAl2O4 composite was prepared with Fe-Fe2O3-Al2O3 powder by a hot press sintering method. The mass ratio was 6:1:2, sintering pressure was 30 MPa, and holding time was 120 min. The raw materials for the powder particles were respectively 1 µm (Fe), 0.5 µm (Fe2O3), and 1 µm (Al2O3) in diameter. The effect of sintering temperature on the microstructure and mechanical properties of Fe/FeAl2O4 composite was studied. The results showed that Fe/FeAl2O4 composite was formed by in situ reaction at 1300 °C–1500 °C. With the increased sintering temperature, the microstructure and mechanical properties of the Fe/FeAl2O4 composite showed a change law that initially became better and then became worse. The best microstructure and optimal mechanical properties were obtained at 1400 °C. At this temperature, the grain size of Fe and FeAl2O4 phases in Fe/FeAl2O4 composite was uniform, the relative density was 96.7%, and the Vickers hardness and bending strength were 1.88 GPa and 280.0 MPa, respectively. The wettability between Fe and FeAl2O4 was enhanced with increased sintering temperature. And then the densification process was accelerated. Finally, the microstructure and mechanical properties of the Fe/FeAl2O4 composite were improved.

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