scholarly journals EROSION WEAR AND HARDNESS SHORE D OF EPOXY RESIN FILLED WITH PISTACHIO POWDER

2021 ◽  
Vol 21 (1) ◽  
pp. 26-34
Author(s):  
Hwazen Salam Fadhil ◽  
Rusul Salah Hadi
Keyword(s):  
Wear Rate ◽  
Epoxy Resin ◽  
Room Temperature ◽  
Erosion Wear ◽  
Weight Percentage ◽  
Wear Rates ◽  
Pistachio Shell ◽  
Ductile Behavior ◽  
Shell Powder ◽  
Absorption Percentage

In this research, erosion wear rate and hardness shore D for polymer biocomposite materials were investigated. The present bio-composites made up of differing weight percentage of pistachio shell powder (0%, 5%, 7%, and 9%) with epoxy resin was prepared by hand layout method. The erosion wear rates for bio composites obtained with under constant factors (10 hours, 60º impingement angles, sand silica particles 850μm, standoff distance 23 cm, flow rate 45 L/min, room temperature, nozzle diameter 4mm and pump diameter 50 mm). Results show that the specimen (epoxy + 9% pistachio shell powder) has the best erosion wear rate resistance and hardness shore D compared with other specimens, also the specimen reinforced by 9% pistachio shell have the lower density and highest water absorption percentage and it is found that the improving percentage for the this specimen in hardness is (11.5%) and in erosion wear rate is (775%). The study reveals that the addition of pistachio shell powder to the epoxy reduces its erosion wear rate and semi ductile behavior.

Tribology Behavior of Graphene Containing Ni-Based Composite Coating under Room Temperature

2015 ◽  
Vol 642 ◽  
pp. 30-33 ◽  
Author(s):  
Jian Liang Li ◽  
Juan Juan Chen ◽  
Dang Sheng Xiong ◽  
Yong Kang Zhang ◽  
Yong Kun Qin ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Composite Coating ◽  
Room Temperature ◽  
Steel Surface ◽  
Tribological Behavior ◽  
Composite Coatings ◽  
Wear Rates ◽  
Gcr15 Steel ◽  
Cr Coating

The graphene containing Ni-based composite coatings with different graphene addition amounts were prepared on 45 steel surface by using dipulse composite electrodeposition technology. The tribological behavior of composite coating was tested by against GCr15 steel pin under the dry condition. The friction coefficient of composite coating is 20-30% lower than pure Cr coating, their wear rates are almost in the same magnitude. Compared with 45 steel, the friction coefficient of composite coating decreases and wear rate falls over 50%.

Effect of SiC Particle Sizes on Erosion Wear Behaviour of SiC/Epoxy Resin Composite

2010 ◽  
Vol 658 ◽  
pp. 368-371 ◽  
Author(s):  
Zhen Lin Lu ◽  
Zhi Guo Xing ◽  
Hui Xie ◽  
Yong Xin Zhou
Keyword(s):  
Wear Rate ◽  
Epoxy Resin ◽  
Resin Composite ◽  
Impact Angle ◽  
Wear Behaviour ◽  
Particle Sizes ◽  
Erosion Wear ◽  
Sic Particles ◽  
Epoxy Resin Composite ◽  
Sic Particle

The effect of SiC particles sizes on erosion wear behaviour of SiC/epoxy resin composite was studied on self-made slurry erosion wear tester. The results show that the erosion wear rate of SiC/epoxy resin composite would be decreased with the increase of SiC particle sizes. With the increase of impact angle, the erosion wear rate would be increased first, and then decreased, it would be peak value when the erosion wear test was carried out at 60° impact angle. When SiC particles were mixed with different sizes, the erosion wear rate of SiC/epoxy resin composite would be lowest. The erosion wear mechanism of SiC/epoxy resin composite was analyzed by observation of worn surface morphology.

Relationships between the Wear of Polymers and their Mechanical Properties

1968 ◽  
Vol 183 (16) ◽  
pp. 98-106 ◽  
Author(s):  
J. K. Lancaster
Keyword(s):  
Mechanical Properties ◽  
Steady State ◽  
Elastic Modulus ◽  
Wear Rate ◽  
Room Temperature ◽  
Breaking Strength ◽  
Relative Proportion ◽  
Wear Rates ◽  
Significant Parameter ◽  
Minimum Wear

The influence of some mechanical properties of polymers—hardness, elastic modulus, breaking strength and elongation to break—on their wear rates against a metal counterface has been determined at various temperatures. Many polymers exhibit a minimum wear rate at a particular temperature. The relative proportion of plastic to elastic deformation, characterized by the ratio of hardness to elastic modulus, is almost independent of temperature for most polymers. Variations in this ratio are therefore insufficient to explain the observed changes in wear rate. In contrast, the product of the breaking strength S and the elongation to break is a very significant parameter. In conditions of abrasive wear, there is an approximately linear relationship between the room temperature values of 1/ Sε for a large number of polymers and their wear rates. In steady-state sliding conditions, however, this relationship no longer applies because of the complicating effects of transfer of polymer to the counterface.

scholarly journals Solid Particle Erosion of Knitted Glass Fabric-Reinforced Poly(Ethylene Terephthalate) Composites

1999 ◽  
Vol 8 (2) ◽  
pp. 096369359900800 ◽  
Author(s):  
E. Moos ◽  
J. Karger-Kocsis
Keyword(s):  
Wear Rate ◽  
Solid Particle ◽  
Ethylene Terephthalate ◽  
Erosive Wear ◽  
Ductile Deformation ◽  
Wear Behaviour ◽  
Erosion Wear ◽  
Wear Rates ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

The erosion behaviour of knitted fabric-reinforced glass fibre (GF)/poly(ethylene terephthalate) (PET)-composites was investigated by solid particle impact with irregularly shaped corundum particles. Angular (30° to 90°) and morphological (matrix crystallinity) dependencies of the wear rate were studied. The specific erosion wear rate was recorded and scanning electron microscopy (SEM) investigations have been performed to describe the wear mechanisms. In general, high erosive wear rates were detected. A maximum erosion rate was found at impacting angles of 60° for all investigated composites. At normal impact (90°) lower wear rates were observed which depended also on the matrix crystallinity. The erosion wear rate increased with increasing crystallinity, knit stretching and annealing (crystallinity change by cold crystallisation). No influence was found for the erosion direction when tests were performed in wale (WD) and course (CD) direction of the knit, respectively. SEM micrographs supported the semi-brittle wear behaviour showing brittle fracture of the glass fibres and the ductile deformation of the PET matrix.

scholarly journals A Study of Wear Rate Epoxy Resin filled with SiO2 particle and Glass fibers

2011 ◽  
Vol 8 (2) ◽  
pp. 689-693
Author(s):  
Baghdad Science Journal
Keyword(s):  
Wear Rate ◽  
Epoxy Resin ◽  
Applied Load ◽  
Rate Increase ◽  
Glass Fibers ◽  
Load Level ◽  
Sio2 Particle ◽  
Weight Percentage ◽  
Reinforcing Particles ◽  
Hardness Increase

This research is devoted to study the effect of different in weight percentage of Sio2 particles and glass fibers (5, 10, 15, 20) wt. % on the wear rate epoxy resin. The results show that the value of hardness increase with the increase for the weight percentage of reinforcing particles and fibers, while the wear rate decrease with the increase the load level of the reinforcing particles and fibers . The largest value of the hardness, and the lowest value of the wear rate for epoxy reinforced with 20% of SiO2, the wear rate increase in general with increasing the applied load.

scholarly journals THE MECHANICAL BEHAVIOR OF POLYMER COMPOSITES REINFORCED BY NATURAL MATERIALS

2021 ◽  
Vol 25 (02) ◽  
pp. 88-96
Author(s):  
Rusul S. Hadi ◽  
◽  
Hwazen S. Fadhil ◽  
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Tensile Test ◽  
Epoxy Resin ◽  
Flexural Modulus ◽  
Weight Fraction ◽  
Flexural Test ◽  
Pistachio Shell ◽  
Shell Powder

Abstract the waste natural such as groundnut shell, rice husk, eggshell, pistachio shells, etc., are regionally available. All these waste natural has good mechanical characteristics and can be employed more efficiently in the improvement of composite materials for different uses. This paper shows the study of the impact test, tensile test and flexural test properties of the pistachio shell powder strengthened epoxy resin. Pistachio shell powder with different weight fraction (5%, 7%, and 9%) strengthened epoxy resin has been developed by hand lay-up method. The tensile test, flexural test and impact strength displays the sample (epoxy+7% wt. pistachio shells) has the highest comparison with other samples. The principal results extracted from this work that the Samples with (9%) weight fraction of the pistachio shell content in epoxy resin decreases the modulus of elasticity, flexural strength, tensile strength, impact strength and flexural modulus, while at (5% and 7%) weight fraction of the pistachio shell content in epoxy resin raise the modulus of elasticity, tensile strength, flexural modulus, flexural strength and impact strength increased.

Development of Correlations for Predicting the Slurry Erosion of Ductile Materials

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Girish R. Desale ◽  
Bhupendra K. Gandhi ◽  
S. C. Jain
Keyword(s):  
Stainless Steel ◽  
Wear Rate ◽  
Ductile Material ◽  
304L Stainless Steel ◽  
Erosion Wear ◽  
Slurry Erosion ◽  
Material Loss ◽  
Aisi 304L ◽  
Wear Rates ◽  
Steel Aisi

Material loss due to erosion is a serious problem associated with the flow of solid-liquid mixtures. In the present work, erosion wear tests have been carried out in a slurry pot tester for seven different ductile type materials namely aluminum alloy (AA6063), copper, brass, mild steel, AISI 304L stainless steel, AISI 316L stainless steel, and turbine blade grade steel using three different erodents namely, quartz, alumina, and silicon carbide. Experiments have been performed at different orientation angles of target material at the velocities of 3, 6, and 8.33 m/s for solid concentrations of 10%, 20%, and 30% (by weight) and particle sizes of 363, 550, and 655 μm. The contribution of cutting wear in the total wear of ductile material at various orientation angles has been determined. It is observed that the maximum cutting wear angle for the ductile material depends on its hardness and a correlation is developed for its prediction. Also a methodology is proposed for estimation of the total erosion wear rate as a contribution of cutting and deformation wear rates. It is seen that this procedure results in an error of ±18% in estimation of erosion wear rate for the present experimental data.

The Effect of Wear Rate on Polymeric Composites Reinforced Nanoclays

2021 ◽  
Author(s):  
Khalid Mohammed Khalifah
Keyword(s):  
Wear Rate ◽  
Epoxy Resin ◽  
Unsaturated Polyester ◽  
Temperature Stability ◽  
Hard Disk ◽  
Polymeric Composites ◽  
Test Duration ◽  
Weight Percentage ◽  
Before And After ◽  
Submerged Conditions

This research aims to study the addition of nanoclays on unsaturated polyester (UP) and epoxy resin (EP) as filling and by weight percentage (2%, 4% and 6%) to this mixture and then study the extent of the effect of this addition on wear rate of the composites’ material where three loads were adopted (10, 15 and 20[Formula: see text]N), respectively, on the iron hard disk (269 HB) and copper hard disk of 111[Formula: see text]HB for the resin before and after adding the clays, where the approved sliding velocities were 4.1887, 3.1415 and 2.0943[Formula: see text]m/sec, respectively, and the test duration was 10 min on the test disc. Immersion of samples in the water for 2, 4, 6 and 8 weeks showed a clear improvement in the wear rate and tear values of dry and submerged conditions in a water under different conditions of load change, slipping speed, time and temperature stability after adding the nanoclays to the polymer.

Strategies of maintenance and repair of agricultural machinery

2020 ◽  
pp. 38-48
Author(s):  
Aleksey S. Dorokhov ◽  
Aleksandr V. Denisov ◽  
Aleksey A. Solomashkin ◽  
Valeriy S. Gerasimov
Keyword(s):  
Wear Rate ◽  
Technical Condition ◽  
Research Purpose ◽  
Agricultural Machinery ◽  
Maintenance And Repair ◽  
Wear Rates ◽  
Urgent Task ◽  
Machine Parts ◽  
Current Value ◽  
Agricultural Machines

Modern machines are subject to progressive wear that occurs at different rates, which leads to unpredictable failures that reduce the reliability and durability of machines. The strategy of maintenance and repair is aimed at eliminating these problems. (Research purpose) The research purpose is in analyzing the basic principles of the strategy of maintenance and repair of agricultural machinery in order to ensure control of the technical condition of machine parts. (Materials and methods) When resource diagnostics is used, , the allowable value of the parameter is set in advance for a part . This value is the tolerance that corresponds to a certain wear rate of the part. The tolerance is set based on the condition that if the current value of the controlled resource parameter during the next diagnosis is less than the set value, then such a part at the current value of the wear rate can be finalized until the next inter-control check. Taking into account the wear rate of the same type of parts from the group when determining the allowable wear during their resource diagnostics becomes an urgent task. (Results and discussions) As a result of research, the article presents "Methodology for determining the main indicators of reliability of parts of agricultural machines with different wear rates" and "Methodology for determining the tolerance system of parts of agricultural machines with different wear rates". (Conclusions) The article presents the tolerance system that reduces the probability of failure of machine parts in operation. During resource diagnostics, those parts whose resource parameters exceed the tolerance are rejected.

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