Influence of the Cellulose and Soft Wood Fibres on the Impact and Tensile Properties in Polypropylene Bio Composites

2021 ◽  
Vol 903 ◽  
pp. 134-139
Author(s):  
Jānis Zicans ◽  
Remo Merijs Meri ◽  
Tatjana Ivanova ◽  
Andrejs Kovalovs ◽  
Piotr Franciszczak
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Resistance ◽  
Tensile Modulus ◽  
Response Surfaces ◽  
Design Parameters ◽  
Cellulose Fibres ◽  
Highest Weight ◽  
Weight Content ◽  
The Impact

Investigation presents an experimental study of mechanical properties of hybrid bio-composites made from man-made cellulose fibres and soft wood microfiller embedded into polypropylene homopolymer matrix at different weight contents. Mechanical properties such as elastic modulus, tensile strength, and impact resistance of the reinforced composites determined for various total weight contents of both biobased fillers were used as the design parameters. The problem was solved by planning the experiments and response surfaces method. The results demonstrate that using the both filler types enhance the mechanical properties. The tensile modulus increases by ~115%. The bio-composite with the highest weight content of man-made cellulose fibres and the lowest content of soft wood microfibers possesses maximum tensile strength (more 66 MPa). Addition of man-made cellulose fibres demonstrate a significant influence on the impact resistance of the investigated composites.

Effect of combined drink cans and steel fibers on the impact resistance and mechanical properties of concrete

2020 ◽  
Vol 14 (2) ◽  
pp. 6734-6742
Author(s):  
A. Syamsir ◽  
S. M. Mubin ◽  
N. M. Nor ◽  
V. Anggraini ◽  
S. Nagappan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Impact Resistance ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Indirect Tensile ◽  
The Impact

This study investigated the combine effect of 0.2 % drink cans and steel fibers with volume fractions of 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3% to the mechanical properties and impact resistance of concrete. Hooked-end steel fiber with 30 mm and 0.75 mm length and diameter, respectively was selected for this study.  The drinks cans fiber were twisted manually in order to increase friction between fiber and concrete. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the strength performance of concrete, especially the compressive strength, flexural strength and indirect tensile strength. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the compressive strength, flexural strength and indirect tensile strength by 2.3, 7, and 2 times as compare to batch 1, respectively. Moreover, the impact resistance of fiber reinforced concrete has increase by 7 times as compared to non-fiber concretes. Moreover, the impact resistance of fiber reinforced concrete consistently gave better results as compared to non-fiber concretes. The fiber reinforced concrete turned more ductile as the dosage of fibers was increased and ductility started to decrease slightly after optimum fiber dosage was reached. It was found that concrete with combination of 2% steel and 0.2% drink cans fibers showed the highest compressive, split tensile, flexural as well as impact strength.    

Factorial Experimental Planning Applied for Evaluated Effect of Matrix Temperature and Screw Rotation Speed of Extrusion in Mechanical Properties and Dimensional Changes in PVC Pipes

2018 ◽  
Vol 930 ◽  
pp. 241-247
Author(s):  
J. Fiori Júnior ◽  
Raquel Piletti ◽  
J. Ilha ◽  
M. Pierini ◽  
Humberto Gracher Riella ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Significant Influence ◽  
Impact Resistance ◽  
Dimensional Change ◽  
Extrusion Process ◽  
Process Conditions ◽  
Dimensional Variation ◽  
Pvc Pipe ◽  
The Impact

This study evaluated the effects of temperature and speed screw rotation of rigid recycled PVC pipe extrusion process on mechanical properties and dimensional variation. In developing the experiments were used the factorial design method type 2k. Were studied the influence of process variables on the properties of impact resistance, dimensional change and tensile strength of PVC pipe. From this study, it was possible to define the best extrusion process conditions with a point of view on the best properties of PVC pipes. The results indicated that the screw rotation has a significant influence on the impact property. For the dimensional variation, the extrusion temperature had a significant influence. There is no significant statistical values for the tensile strength in the studied variables.

scholarly journals Evaluation of the Mechanical Properties of Polypropylene-Aluminum-Dross Composite

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
S. O. Adeosun ◽  
M. A. Usman ◽  
W. A. Ayoola ◽  
I. O. Sekunowo
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Water Absorption ◽  
Hazardous Waste ◽  
Impact Resistance ◽  
Particle Sizes ◽  
Human Beings ◽  
The Impact ◽  
Composite Samples

Aluminum (Al) dross is a hazardous waste from the secondary smelting of aluminium industries, and safe disposal of this waste is a big challenge to these industries. Dumping of this waste is an environmental hazard to plants, animals, and even human beings. This study is aimed at improving the mechanical properties of polypropylene (PP) by adding Al dross in 2–50 wt% for particle sizes 53 μm and 150 μm. PP-Al-dross composite samples were cast, and ultimate tensile strength (UTS), impact resistance (IR), water absorption (WA), and density (D) tests were carried out. The results obtained show that UTS improved by 68% (at 15 wt% Al-dross addition), D increased by 54% (at 50 wt% Al-dross addition), and WA by 500% (at 8 wt% Al-dross addition) over the convectional PP. The impact resistance of the composite was found to be the same (68 J) with that of conventional PP at 15 wt% Al dross.

Mechanical properties of unidirectional aligned bagasse fibers/vinyl ester composite

2016 ◽  
Vol 36 (2) ◽  
pp. 157-163 ◽  
Author(s):  
Ayyanar Athijayamani ◽  
Balasubramaniam Stalin ◽  
Susaiyappan Sidhardhan ◽  
Azeez Batcha Alavudeen
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Vinyl Ester ◽  
Flexural Modulus ◽  
Tensile Modulus ◽  
Short Beam ◽  
Beam Shear ◽  
The Matrix ◽  
The Impact

Abstract The present study describes the preparation of aligned unidirectional bagasse fiber-reinforced vinyl ester (BFRVE) composites and their mechanical properties such as tensile, flexural, shear and impact strength. Composites were prepared by a hand lay-up technique developed in our laboratory with the help of a hot press. Mechanical properties were obtained for different fiber contents by varying the number of layers. The obtained tensile property values were compared with the theoretical results. The results show that the tensile strength increased linearly up to 44 wt% and then dropped. However, the tensile modulus increased linearly from 17 wt% to 60 wt%. In the case of flexural properties, the flexural strength increased up to 53 wt% and started to decrease. However, the flexural modulus also increased linearly up to 60 wt%. The impact strength values were higher than the matrix materials for all the specimens. The short beam shear strength values were also increased up to 53 wt% and then dropped. The modified Bowyer and Bader (MBB) model followed by the Hirsch model shows a very good agreement with experimental results in both tensile strength and modulus.

Study on Mechanical Properties of PEEK Composites

2012 ◽  
Vol 476-478 ◽  
pp. 519-525 ◽  
Author(s):  
Lan Zhu Zhang ◽  
Min Li ◽  
Hui Hu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Tensile Modulus ◽  
Expanded Graphite ◽  
Weight Percent ◽  
Nano Particles ◽  
Short Fibers ◽  
Weight Content ◽  
Tensile Performance ◽  
Short Carbon

The tensile properties of polyetheretherketone (PEEK) composites, which were reinforced with short fibers, such as short carbon fiber (SCF), short glass fiber (SGF), or filled with polytetrafluoroethylene (PTEF), expanded graphite and nano material TiO2 were examined and studied. The weight content of short fibers, PTFE and expanded graphite was varied from 0-15%, and of TiO2 was varied from 0-8%. The results showed, with increasing of the weight content of short fibers, the tensile performance (tensile strength and modulus) of PEEK composites was increased rapidly. If the weight percent of short fibers was more than 10%, this increasing tendency became slowly. With the increasing of PTFE content, the tensile strength was increased at first and then decreased rapidly. However, the tensile modulus kept constant during the change of PTFE content. The influence of expanded graphite and nano particles TiO2 on mechanical properties of PEEK composites was also be studied here. Meanwhile, the reasons of different influence of these fillers were analyzed during microstructure changes of PEEK composites with SEM photographs.

EFFECT OF WELD PARAMETERS ON THE MECHANICAL PROPERTIES OF FRICTION-STIR-WELDED HEAT-TREATABLE AA6061-T6

2019 ◽  
Vol 57 (6) ◽  
pp. 677
Author(s):  
Tran Hung Tra
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Bending Strength ◽  
Base Alloy ◽  
Impact Resistance ◽  
Welding Parameters ◽  
Friction Stir ◽  
Weld Parameters ◽  
The Impact ◽  
Alloy 6061

Effect of welding parameters on the mechanical properties of the friction stir welding of heat-treatable 6061-T6 was experimentally investigated. The influence of the welding rates on the hardness, tensile strength, bending strength, and the impact energy of the welding were investigated. The experimental results showed the joint could be obtained with free defects. However, both the tensile and bending strength of the joint were quite low compared to that of the base alloy 6061. The bending ductility of the joints were improved significantly. While the impact resistance at around the welded zone was higher than that of the base alloy, the impact resistance at the weld center was remarkable low.

Changes of Some Mechanical Properties of Different Low-Density Polyethylene (LDPE) Films during the Service Life

2017 ◽  
Vol 33 (6) ◽  
pp. 913-918 ◽  
Author(s):  
Nefise Yasemin Emekli ◽  
Kenan Büyüktas ◽  
Ali Basçetinçelik
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Service Life ◽  
Impact Resistance ◽  
Physical Structure ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Elongation At Break ◽  
Greenhouse Cultivation ◽  
The Impact

Abstract. In this study, changes on some mechanical properties such as impact resistance, tensile strength, and elongation at break of the low density polyethylene (LDPE) greenhouse films produced by CO-EX technology were investigated under natural weathering conditions during their service life of 24 months. With multi-layered UV+IR+EVA and UV+IR+EVA+AF-added two different type greenhouse cover films were used as a material. For this purpose, a construction with a slope roof of 26.5° was used. Initially, the impact resistances of UV+IR+EVA and UV+IR+EVA+AF films were determined as 1161.4 and 1164.1 g, respectively. But at the end of 24 months, it was determined that the impact resistance of these films reduced as 45.5% and 38.8%, respectively. In addition, tensile strength of the films decreased by 3.5% and 8.5% and the value of elongation at break decreased by 14% and 12%, respectively, at the end of 24 months period. The results showed that the physical structure of the films changed from the elastic form to the fragile form at the end of product life depending on environmental conditions and aging. This situation is very important for all manufacturers who engaged in greenhouse cultivation in Antalya where the greenhouse cultivation is common. Keywords: Aging, Impact strength, Low-density polyethylene film, Mechanical properties, Tensile strength.

Mechanical Property Improvement of Poly(Butylene Succinate) by Reinforcing with Modified Fumed Silica

2014 ◽  
Vol 1025-1026 ◽  
pp. 215-220 ◽  
Author(s):  
Sasirada Weerasunthorn ◽  
Pranut Potiyaraj
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Fumed Silica ◽  
Tensile Modulus ◽  
Silica Particles ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Ir Spectrophotometry

Fumed silica particles (SiO2) were directly added into poly (butylene succinate) (PBS) by melt mixing process. The effects of amount of fumed silica particles on mechanical properties of PBS/fumed silica composites, those are tensile strength, tensile modulus, impact strength as well as flexural strength, were investigated. It was found that the mechanical properties decreased with increasing fumed silica loading (0-3 wt%). In order to increase polymer-filler interaction, fumed silica was treated with 3-glycidyloxypropyl trimethoxysilane (GPMS), and its structure was analyzed by FT-IR spectrophotometry. The PBS/modified was found to possess better tensile strength, tensile modulus, impact strength and flexural strength that those of PBS/fumed silica composites.

scholarly journals Effect of SWCNT-Tuball Paper on the Lightning Strike Protection of CFRPs and Their Selected Mechanical Properties

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3140
Author(s):  
Kamil Dydek ◽  
Anna Boczkowska ◽  
Rafał Kozera ◽  
Paweł Durałek ◽  
Łukasz Sarniak ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Copper Foil ◽  
Impact Resistance ◽  
Mechanical Analysis ◽  
Lightning Strike ◽  
Single Wall Carbon Nanotubes ◽  
Carbon Fibre Reinforced Polymer ◽  
The Impact

The main aim of this work was the investigation of the possibility of replacing the heavy metallic meshes applied onto the composite structure in airplanes for lightning strike protection with a thin film of Tuball single-wall carbon nanotubes in the form of ultra-light, conductive paper. The Tuball paper studied contained 75 wt% or 90 wt% of carbon nanotubes and was applied on the top of carbon fibre reinforced polymer before fabrication of flat panels. First, the electrical conductivity, impact resistance and thermo-mechanical properties of modified laminates were measured and compared with the reference values. Then, flat panels with selected Tuball paper, expanded copper foil and reference panels were fabricated for lightning strike tests. The effectiveness of lightning strike protection was evaluated by using the ultrasonic phased-array technique. It was found that the introduction of Tuball paper on the laminates surface improved both the surface and the volume electrical conductivity by 8800% and 300%, respectively. The impact resistance was tested in two directions, perpendicular and parallel to the carbon fibres, and the values increased by 9.8% and 44%, respectively. The dynamic thermo-mechanical analysis showed higher stiffness and a slight increase in glass transition temperature of the modified laminates. Ultrasonic investigation after lightning strike tests showed that the effectiveness of Tuball paper is comparable to expanded copper foil.

scholarly journals Damage Evolution of Granodiorite after Heating and Cooling Treatments

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 779
Author(s):  
Mohamed Gomah ◽  
Guichen Li ◽  
Salah Bader ◽  
Mohamed Elkarmoty ◽  
Mohamed Ismael
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Failure Mode ◽  
Physical And Mechanical Properties ◽  
P Wave ◽  
Physical Parameters ◽  
Slow Cooling ◽  
Heating And Cooling ◽  
Natural Rock ◽  
The Impact

The awareness of the impact of high temperatures on rock properties is essential to the design of deep geotechnical applications. The purpose of this research is to assess the influence of heating and cooling treatments on the physical and mechanical properties of Egyptian granodiorite as a degrading factor. The samples were heated to various temperatures (200, 400, 600, and 800 °C) and then cooled at different rates, either slowly cooled in the oven and air or quickly cooled in water. The porosity, water absorption, P-wave velocity, tensile strength, failure mode, and associated microstructural alterations due to thermal effect have been studied. The study revealed that the granodiorite has a slight drop in tensile strength, up to 400 °C, for slow cooling routes and that most of the physical attributes are comparable to natural rock. Despite this, granodiorite thermal deterioration is substantially higher for quick cooling than for slow cooling. Between 400:600 °C is ‘the transitional stage’, where the physical and mechanical characteristics degraded exponentially for all cooling pathways. Independent of the cooling method, the granodiorite showed a ductile failure mode associated with reduced peak tensile strengths. Additionally, the microstructure altered from predominantly intergranular cracking to more trans-granular cracking at 600 °C. The integrity of the granodiorite structure was compromised at 800 °C, the physical parameters deteriorated, and the rock tensile strength was negligible. In this research, the temperatures of 400, 600, and 800 °C were remarked to be typical of three divergent phases of granodiorite mechanical and physical properties evolution. Furthermore, 400 °C could be considered as the threshold limit for Egyptian granodiorite physical and mechanical properties for typical thermal underground applications.

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