7 research outputs found
Multi-Fillers GFRP Laminated Composite Plates: Fabrication & Properties
No full text817-825It is a common practice to enhance the strength of composites; the constituent materials (fiber/matrix) are altered. The
addition of filler materials such as graphene can fulfil the need. However, the cost of graphene limits its use as a common
filler material. In this regard, some other substitutes of filler or scheme of material preparation needs to be explored. In this
work, bi-directional woven E-glass fabric epoxy composite laminated plates (LCPs) are fabricated using the hand layup
technique. Graphene and flyash is used as filler. Ten types of LCPs are fabricated by altering the fillers at the designated
fabric layer. Various thermal, mechanical, and physical tests are conducted. It is observed, the interfacial chemical bonding,
load transfer between fiber and matrix and surface quality is affected due to the presence of fillers. LCPs with graphene have
superior physical and mechanical properties than the LCPs of flyash filler. However, adding graphene in targeted layers
without adding to whole LCP or functionally-grading through layers can also enhance the strength of LCPs, e.g., graphene
when added in outer layers of LCP makes hydrophobic, hard and thermally stable along with increasing tensile and flexural
strengths
MODAL PARAMETRIC STUDY OF GLASS FIBER REINFORCED POLYMER BEAM WITH PRE-CAST AND AFTER CAST CIRCULAR HOLE
No full textComposite materials with glass fiber reinforcement are very common in daily to daily life use. Its properties like high strength, modulus, corrosion resistance, insulation is excellent. Glass fiber reinforced epoxy composite is a very common natural choice of composite generally used in structural application. The use of glass fiber epoxy composite is very commonly used in automobile bodies, industrial furnishings, household and now days as furnishing materials used in decorative. Laminated composite structures have widespread of use in many applications starting from industries to automobiles. Composite Beams are the most commonly used structural components of buildings, bridges, body parts of automobiles, machineries, house hold products, bio medical products, aerospace, marine and etc. For general fitting holes are necessary to make that weakens the structure. The main objective of this work is to contribute a better understanding of the dynamic behavior of composite beam made from fiber reinforced composite materials with and without presence of holes. For this purpose, fiber reinforced composite beams are to be made by hand layup method. Screw compressive close molds are to be designed and prepared first to fabricate the composite beams under screw compressive load. E-glass is used as reinforcement. To manufacture the GFRP beam with precast hole, the fiber layers with holes at the center is first cut by the help of diamond cuter. The mechanical properties of the fabricated GFRP composite beam (solid) is to be analyzed through different material testing according to ASTM (American society of testing of materials) standards. The natural frequencies of the composite cantilever beams under free vibration are investigated. For this purpose, a low-cost modal testing setup is to be designed and fabricated. The natural frequencies of the solid beam, beam with hole and hole made in the beam by drilling after solidification are compared
Systematic Pore Characterization of Sub-Bituminous Coal from Sohagpur Coalfield, Central India Using Gas Adsorption Coupled with X-ray Scattering and High-Resolution Imaging
No full textPore characterization helps to estimate the coalbed methane recovery and carbon storage potential of the reservoir. Earlier research on the characteristics of coal pores has shown that coal has high hydrocarbon storage potential in the adsorbed state, but few studies have shown the influence of chemical heterogeneities and depth on the adsorption potential of the coal. With the objective of studying the effect of chemical variation, depth, and surface roughness on gas adsorption potential, this study combines coal composition analysis and adsorption-based pore characterization of coal and shale samples coupled with high-resolution imaging and X-ray scattering measurements. Variation in pore features is correlated with varying depth and composition. A decrease in the mesopore volume and surface area is observed with an increase in the depth and total organic content and inverse behavior is observed for micropores. Scanning electron microscopy images depict the change in the pore shape from semi-spherical OM pores to elongated pores with depth, and samples with high mineral content show a dominance of inter- and intraparticle pores. Fractal dimension values estimated from SAXS are notably higher than N2-LPGA-derived values (i.e.,─DS > DN) due to the incorporation of inaccessible pores, which reflects an increase of up to 62% in SAXS estimated mesopore volume and surface area. This study will provide a better approach to understand the impact of composition, depth, and surface roughness over the gas storage potential in coal reservoirs.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work publicApplied Geophysics and Petrophysic
Virtual and Augmented Reality in Surgery
No full textTo provide an overview of the novel applications of Augmented Reality (AR) and Virtual Reality (VR) technologies within the realm of Surgery. This chapter will clarify the concepts associated with AR and VR in the context of surgery, and address implementation approaches of AR and VR in surgical pre-operative planning and surgical training. Some examples of state-of-the-art solutions and system architecture developed by the editors will be described and discussed. 2020, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.This work was partly supported by NPRP Grant #NPRP 11S-1219-170106 from the Qatar National Research Fund (a member of Qatar Foundation).Scopu
Multi-Fillers GFRP Laminated Composite Plates: Fabrication & Properties
Get PDFIt is a common practice to enhance the strength of composites; the constituent materials (fiber/matrix) are altered. Theaddition of filler materials such as graphene can fulfil the need. However, the cost of graphene limits its use as a commonfiller material. In this regard, some other substitutes of filler or scheme of material preparation needs to be explored. In thiswork, bi-directional woven E-glass fabric epoxy composite laminated plates (LCPs) are fabricated using the hand layuptechnique. Graphene and flyash is used as filler. Ten types of LCPs are fabricated by altering the fillers at the designatedfabric layer. Various thermal, mechanical, and physical tests are conducted. It is observed, the interfacial chemical bonding,load transfer between fiber and matrix and surface quality is affected due to the presence of fillers. LCPs with graphene havesuperior physical and mechanical properties than the LCPs of flyash filler. However, adding graphene in targeted layerswithout adding to whole LCP or functionally-grading through layers can also enhance the strength of LCPs, e.g., graphenewhen added in outer layers of LCP makes hydrophobic, hard and thermally stable along with increasing tensile and flexuralstrengths
