Assessment of Replacement of Metal Parts by BFRP Composites into a Highly Efficient Electrical Prototype

This work intends to evaluate the use of epoxy composite materials reinforced with basalt fibers as replacement to metallic mechanical parts of a highly efficient electrical prototype. The analysis of the behavior of the original metallic bracket was made and an optimization process was carried out in order to achieve the most suitable geometry and stacking sequence if produced in composite material. Finite element analysis using Siemens NX12 and experimental tests to the produced composite part were performed in order to access it. It was verified that the total weight of the composite part shows a 45% reduction. The composite part shows a higher deformation than the metallic one due to basalt fiber’s higher flexibility. However, the advantages added by the new component largely compensate for the disadvantages that may have been added without compromising its performance. Obtained results show that the use of basalt fiber reinforced composites as the material of mechanical parts of a highly efficient electrical prototype that is a good alternative.

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Investigation of Basalt Fiber Reinforced Polyamide Composites

Materials Science Forum ◽

10.4028/www.scientific.net/msf.589.7 ◽

2008 ◽

Vol 589 ◽

pp. 7-12 ◽

Cited By ~ 1

Author(s):

Tamás Deák ◽

Tibor Czigány

Keyword(s):

Glass Fiber ◽

Basalt Fiber ◽

Dynamic Mechanical Properties ◽

Fiber Reinforced Composites ◽

Reinforced Composites ◽

Fiber Reinforced ◽

Basalt Fibers ◽

Reinforced Composite ◽

Glass Fiber Reinforced ◽

Injection Molded

Basalt fiber reinforced polyamide composites were investigated to determine their static and dynamic mechanical properties. The composites were compounded in an extruder and were injection molded. A glass fiber reinforced composite also was investigated. Two different basalt fibers were used with silane sizing and one of them was used also without sizing. The results show that composites with silane sized basalt fibers have properties similar to glass fiber reinforced composites, while unsized basalt fibers eventuate smaller strength and higher brittleness.

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Comparison of first-order generalized beam theory with shell finite element analysis and experimental tests for thin-walled members with sectional constraints

10.1063/5.0026938 ◽

2020 ◽

Author(s):

J. Bonada ◽

F. Roure ◽

M. M. Pastor ◽

M. Casafont

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Beam Theory ◽

Experimental Tests ◽

Element Analysis ◽

First Order ◽

Thin Walled ◽

Shell Finite Element ◽

Generalized Beam Theory

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Hygrothermal degradation of elastic properties of fiber reinforced composites: A micro-scale finite element analysis

Composite Structures ◽

10.1016/j.compstruct.2021.113819 ◽

2021 ◽

pp. 113819

Author(s):

Meghdad Gholami ◽

Hamed Afrasiab ◽

Ali Mohammad Baghestani ◽

Alireza Fathi

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Elastic Properties ◽

Fiber Reinforced Composites ◽

Reinforced Composites ◽

Fiber Reinforced ◽

Element Analysis ◽

Micro Scale ◽

Hygrothermal Degradation

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A New Approach of Soft Joint Based on a Cable-Driven Parallel Mechanism for Robotic Applications

Mathematics ◽

10.3390/math9131468 ◽

2021 ◽

Vol 9 (13) ◽

pp. 1468

Author(s):

Luis Nagua ◽

Carlos Relaño ◽

Concepción A. Monje ◽

Carlos Balaguer

Keyword(s):

Parallel Mechanism ◽

Degrees Of Freedom ◽

Kinematic Model ◽

Experimental Tests ◽

Humanoid Robots ◽

Inverse Kinematic ◽

Element Analysis ◽

New Approach ◽

Flexible Polymer ◽

The Mathematical Model

A soft joint has been designed and modeled to perform as a robotic joint with 2 Degrees of Freedom (DOF) (inclination and orientation). The joint actuation is based on a Cable-Driven Parallel Mechanism (CDPM). To study its performance in more detail, a test platform has been developed using components that can be manufactured in a 3D printer using a flexible polymer. The mathematical model of the kinematics of the soft joint is developed, which includes a blocking mechanism and the morphology workspace. The model is validated using Finite Element Analysis (FEA) (CAD software). Experimental tests are performed to validate the inverse kinematic model and to show the potential use of the prototype in robotic platforms such as manipulators and humanoid robots.

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Improvement of Performance Profile of Acrylic Based Polyester Bio-Composites by Bast/Basalt Fibers Hybridization for Automotive Applications

Journal of Composites Science ◽

10.3390/jcs5040100 ◽

2021 ◽

Vol 5 (4) ◽

pp. 100

Author(s):

Anjum Saleem ◽

Luisa Medina ◽

Mikael Skrifvars

Keyword(s):

Hybrid Composites ◽

Flexural Modulus ◽

Basalt Fiber ◽

Fiber Composites ◽

Fiber Reinforced ◽

Basalt Fibers ◽

Bast Fiber ◽

Bast Fibers ◽

Resin Impregnation ◽

Structural Applications

New technologies in the automotive industry require lightweight, environment-friendly, and mechanically strong materials. Bast fibers such as kenaf, flax, and hemp reinforced polymers are frequently used composites in semi-structural applications in industry. However, the low mechanical properties of bast fibers limit the applications of these composites in structural applications. The work presented here aims to enhance the mechanical property profile of bast fiber reinforced acrylic-based polyester resin composites by hybridization with basalt fibers. The hybridization was studied in three resin forms, solution, dispersion, and a mixture of solution and dispersion resin forms. The composites were prepared by established processing methods such as carding, resin impregnation, and compression molding. The composites were characterized for their mechanical (tensile, flexural, and Charpy impact strength), thermal, and morphological properties. The mechanical performance of hybrid bast/basalt fiber composites was significantly improved compared to their respective bast fiber composites. For hybrid composites, the specific flexural modulus and strength were on an average about 21 and 19% higher, specific tensile modulus and strength about 31 and 16% higher, respectively, and the specific impact energy was 13% higher than bast fiber reinforced composites. The statistical significance of the results was analyzed using one-way analysis of variance.

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Modeling and experimental study on the mechanical behavior of glass/basalt fiber metal laminates after thermal cycling

International Journal of Damage Mechanics ◽

10.1177/1056789521998731 ◽

2021 ◽

pp. 105678952199873

Author(s):

Mehdi Abdollahi Azghan ◽

F Bahari-Sambran ◽

Reza Eslami-Farsani

Keyword(s):

Thermal Cycling ◽

Glass Fibers ◽

Basalt Fiber ◽

Tensile Modulus ◽

Alloy Sheet ◽

Experimental Results ◽

Weibull Function ◽

Basalt Fibers ◽

Thermal Stabilities ◽

Fiber Metal

In the present study, the effect of thermal cycling and stacking sequence on the tensile behavior of fiber metal laminate (FML) composites containing glass and basalt fibers was investigated. To fabricate the FML samples, fibers reinforced epoxy composite were sandwiched between two layers of 2024-T3 aluminum alloy sheet. 55 thermal cycles were implemented at a temperature range of 25–115°C for 6 min. The tensile tests were carried out after the thermal cycling procedure, and the results were compared with non-thermal cycling specimens. Scanning electron microscopy (SEM) was employed for the characterization of the damage mechanisms. The FMLs containing four basalt fibers’ layers showed higher values of tensile strength, modulus, and energy absorption. On the other hand, the lowest strength and fracture energy were found in the asymmetrically stacked sample containing basalt and glass fibers, due to weak adhesion between composite components (basalt and glass fibers). The lowest tensile modulus was found in the sample containing glass fibers that was due to the low modulus of the glass fibers compared to basalt fibers. In the case of the samples exposed to thermal cycling, the highest and the lowest thermal stabilities were observed in basalt fibers samples and asymmetrically stacked samples, respectively. In accordance with the experimental results, a non-linear damage model using the Weibull function and tensile modulus was employed to predict the stress-strain relationship. The simulated strain–strain curves presented an appropriate agreement with the experimental results.

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On-Site Experimental Testing to Study the Vibration of Composite Floors

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.601.231 ◽

2014 ◽

Vol 601 ◽

pp. 231-234

Author(s):

Cristian Lucian Ghindea ◽

Dan Cretu ◽

Monica Popescu ◽

Radu Cruciat ◽

Elena Tulei

Keyword(s):

Dynamic Characteristics ◽

Experimental Testing ◽

Concrete Slab ◽

Human Perception ◽

Experimental Tests ◽

International Standards ◽

Structural Element ◽

Element Analysis ◽

Floor Slabs ◽

Composite Floors

As a general trend, in order to reduce material consumption or to reduce the mass of the structures, composite floor slabs solutions are used to achieve large spans floor slabs. This solutions led to floors sensitive to vibrations induced generally by human activities. As a verification of the design concepts of the composite floors, usually, it is recommended a further examination of the floor after completion by experimental tests. Although the experimental values of the dynamic response of the floor are uniquely determined, the processing can take two directions of evaluation. The first direction consist in determining the dynamic characteristics of the floor and their comparison with the design values. Another way that can be followed in the processing of the experimental results is to consider the human perception and comfort to the vibration on floors. The paper aims to present a case study on a composite floor, with steel beams and concrete slab, tested on-site. Both aspects of data processing are analyzed, in terms of the structural element, and in terms of the effect on human perception and comfort. Experimentally obtained values for the dynamic characteristics of the floor are compared with numerical values from finite element analysis, while the second type of characteristic values are compared with various human comfort threshold values found in international standards.

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Applications and Advantages of Basalt Assembly in Construction Industry

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.332-334.1937 ◽

2011 ◽

Vol 332-334 ◽

pp. 1937-1940 ◽

Cited By ~ 1

Author(s):

Wei Wei Hu ◽

Hua Wu Liu ◽

Dang Feng Zhao ◽

Zong Bin Yang

Keyword(s):

Construction Industry ◽

High Performance ◽

Inorganic Material ◽

Basalt Fiber ◽

Fiber Reinforced Polymer ◽

Chemical Compositions ◽

Basalt Fibers ◽

Reinforced Polymer ◽

Reinforcing Fibers ◽

Reinforcement Material

Basalt fiber is a novel high-performance inorganic material, recently has been well received as a reinforcement in China. However, the applications in civil engineering have been rather limited. The chemical compositions, the characteristics of basalt fibers, and the typical products of basalt, including chopped yarn of basalt fiber, basalt fiber geo-textiles and basalt fiber reinforced polymer, were introduced．The advantages of basalt fibers as a reinforcement of concrete were explored in comparison with the commonly used reinforcing fibers, which indicates that basalt fiber is the most promising reinforcement material for concrete and will significantly benefit civil construction industries in the future.

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Buckling analysis of natural fiber reinforced composites

Challenge Journal of Structural Mechanics ◽

10.20528/cjsmec.2021.02.001 ◽

2021 ◽

Vol 7 (2) ◽

pp. 58

Author(s):

Celal Çakıroğlu ◽

Gebrail Bekdaş

Keyword(s):

Composite Plate ◽

Natural Fiber ◽

Low Cost ◽

Natural Fibers ◽

Experimental Studies ◽

Fiber Reinforced Composites ◽

Fiber Types ◽

Reinforced Composites ◽

Fiber Reinforced ◽

Element Analysis

In the recent years natural fiber reinforced composites are increasingly receiving attention from the researchers and engineers due to their mechanical properties comparable to the conventional synthetic fibers and due to their ease of preparation, low cost and density, eco-friendliness and bio-degradability. Natural fibers such as kenaf or flux are being considered as a viable replacement for glass, aramid or carbon. Extensive experimental studies have been carried out to determine the mechanical behavior of different natural fiber types such as the elastic modulus, tensile strength, flexural strength and the Poisson’s ratio. This paper presents a review of the various experimental studies in the field of fiber reinforced composites while summarizing the research outcome about the elastic properties of the major types of natural fiber reinforced composites. Furthermore, the performance of a kenaf reinforced composite plate is demonstrated using finite element analysis and results are compared to a glass fiber reinforced laminated composite plate.

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