Wear behavior of hydroxyapatite reinforced polymer composite for biomedical applications

2022 ◽  
Author(s):  
D Srinivasan ◽  
Balasundaram R ◽  
Ravichandran M ◽  
Sakthi balan G ◽  
Vijay S ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Wear Behavior ◽  
Wear Testing ◽  
Tooth Decay ◽  
Ratio Analysis ◽  
Reinforced Composite ◽  
Reinforced Polymer ◽  
Human Bones ◽  
Pin On Disc ◽  
Sliding Distance

Abstract In medical fields, hydroxyapatite (HA) is used for restoring the human bones and teeth. Nowadays, newer bio composites are being developed to replace the broken or removed teeth in human using hydroxyapatite. The original teeth may be removed from human, due to various reasons such as tooth decay, periodontal disease and gum diseases. Due to the bioactivity property of HA, it helps the tooth to grow. In this work, tribological properties of HA powder reinforced composite are investigated. Three most important factors that affect the properties of the composites were chosen and varied during wear testing of the composites. The HA powder weight %, applied load (P) and sliding distance (SD) were varied on the basis of Taguchi’s experimental design. Analysis of variance (ANOVA) and (Signal to Noise) SN ratio analysis was used to study the influence of each factor on the specific wear rate (SWR). It was concluded that the HA wt. % highly influences the SWR of the composite during pin on disc testing.

Investigation on Mechanical Properties and Analysis of Dry Sliding Wear Behavior of Al LM13/AlN Metal Matrix Composite Based on Taguchi's Technique

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
N. Radhika ◽  
R. Raghu
Keyword(s):  
Regression Analysis ◽  
Aluminum Alloy ◽  
Tensile Test ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Ratio Analysis ◽  
Sliding Distance

LM13/AlN (10 wt. %) metal matrix composites (MMC) and unreinforced aluminum alloy were produced under stir casting route. Microstructural characteristics were examined on the developed composite using optical microscope. The hardness and tensile test were carried out on both unreinforced aluminum alloy and composite using Vickers hardness tester and universal testing machine (UTM), respectively. Dry sliding wear behavior of the composite and unreinforced aluminum alloy was evaluated using pin-on-disk tribometer based on the design of experiments approach. Experimental parameters such as applied load (10, 20, and 30 N), velocity (1, 2, and 3 m/s), and sliding distance (500, 1000, and 1500 m) were varied for three levels. Signal-to-noise (S/N) ratio analysis, analysis of variance, and regression analysis were also performed. The characterization results showed that reinforcement particles were uniformly distributed in the composite. The hardness and tensile test revealed greater improvement of property in composite compared to that of unreinforced alloy. Wear plot showed that wear was increased with increase in load and decreased with increase in velocity and sliding distance. S/N ratio analysis and analysis of variance (ANOVA) indicated that load has greater significance over the wear rate followed by velocity and sliding distance. Regression analysis revealed greater adequacy with the constructed model in predicting the wear behavior of composite and unreinforced aluminum alloy. Scanning electron microscopy (SEM) analysis is evident that the transition of wear from mild to severe occurred on increase of the load in the composite.

Wear Behavior of ZrO2-CNF and Si3N4-CNT Nanocomposites

2011 ◽  
Vol 465 ◽  
pp. 495-498 ◽  
Author(s):  
Pavol Hvizdoš ◽  
Annamária Duszová ◽  
Viktor Puchý ◽  
Orsolya Tapasztó ◽  
Peter Kun ◽  
...  
Keyword(s):  
Volume Fraction ◽  
Tribological Behavior ◽  
Wear Behavior ◽  
Carbon Nanofibres ◽  
Wear Rates ◽  
Pull Out ◽  
Pin On Disc ◽  
Material Volume ◽  
Wear Damage ◽  
Sliding Distance

Tribological behavior of ZrO2 and Si3N4 based nanocomposites with addition of carbon nanofibres and nanotubes has been studied by the pin-on-disc technique. Friction coefficients were measured and recorded, wear rates were calculated in terms of material volume loss per load and sliding distance. The wear damage was studied using optical and electron microscopy and its mechanisms were identified. In monolithic materials the dominant wear mechanism was abrasion, in composites with CNF and with higher volume fraction of CNTs (5 and 10%) fiber pull-out and lubricating by the carbon phases occurred.

Properties and Characteristics of Sisal Fibre Reinforced Composite

2012 ◽  
Vol 585 ◽  
pp. 322-326 ◽  
Author(s):  
Ankita Sharma ◽  
S. Suresh ◽  
Amit Dubey
Keyword(s):  
Fibre Composite ◽  
Testing Machine ◽  
Sharp Decrease ◽  
Fibre Content ◽  
Wear Testing ◽  
Sisal Fibre ◽  
Reinforced Composite ◽  
Pin On Disc ◽  
Different Content ◽  
Scanning Electron

Using the pin on disc wear testing machine the wear characteristics of sisal fibre composite of different content were studied and alignment of fibres in polymer composite were known by scanning electron microscopy. It was observed that when there was no fibre content, the wear was ~25 micron but when the fibre content made 10% to the polymer, the wear increased upto 100 micron and its increased 125 micron at 20% fibre content, after this there is sharp decrease in wear when the sisal fibre content was increased up to 40% and its again reached to 25 micron when the fibre content was increased up to 60% and again after increasing the fibre content 80% the wear gradually increased to 175 micron. Thus to have less wear the fibre content should be 60% in composite.

Effects of SiO2 Particles on Wear Behavior of Cu-SiO2 Dispersion-Hardened Alloys

2007 ◽  
Vol 561-565 ◽  
pp. 659-662 ◽  
Author(s):  
Hisashi Sato ◽  
Yoshimi Watanabe
Keyword(s):  
Volume Fraction ◽  
Wear Behavior ◽  
Solid Particles ◽  
Wear Property ◽  
Wear Process ◽  
Hardened Alloy ◽  
Pin On Disc ◽  
Sio2 Particles ◽  
Worn Surface ◽  
Sliding Distance

Effects of solid particles on wear behavior of dispersion-hardened alloy were investigated using Cu-SiO2 alloys containing 0.6vol.%SiO2, 1.2vol.%SiO2 and 1.7vol.%SiO2 particles. Wear tests were made using pin-on-disc type wear machine. Wear property of the Cu-SiO2 alloys is improved by increasing volume fraction of SiO2 particles. Moreover, wear amounts of Cu-SiO2 alloys increase with increasing the sliding distance, and then are saturated at exceeding about 1km. This is why that SiO2 particle improves the strength of Cu-SiO2 alloy, and that the work hardening occurs on worn surface. Wear-induced layer is formed just below worn surface by severe plastic deformation due to wear, and its hardness increases as the volume fraction of SiO2 particles increases. From these obtained results, wear process of Cu-SiO2 alloy was discussed.

Comparative study of the wear behavior of B4C monolayered and CrN/CrCN/DLC multilayered PVD coatings under high contact loads: an experimental analysis

2021 ◽  
pp. 1-42
Author(s):  
Francisco J. G. Silva ◽  
Rafaela Casais ◽  
António Baptista ◽  
Maria José Marques ◽  
Vitor Sousa ◽  
...  
Keyword(s):  
Contact Pressure ◽  
Wear Behavior ◽  
Layer Structure ◽  
Wear Testing ◽  
Pvd Coatings ◽  
Laboratory Equipment ◽  
Pin On Disc ◽  
Coated Surfaces ◽  
Almost All ◽  
Wear Tests

Abstract There are several ways to characterize the wear resistance of coatings in the laboratory, almost all of them applying relatively low contact pressure, both punctually and over surface contact. Pin-on-disc, reciprocal sliding and micro-abrasion wear tests are quite common configurations for this purpose. Thus, a gap was identified in terms of characterization of hard PVD coatings subject to higher levels of contact pressure. This work aims to study and compare the wear behavior of two different coatings made by PVD, a B4C (Boron Carbide) monolayer, less used, and another following a multi-layer structure of CrN/CrCN/DLC, to identify the wear mechanisms involved in quite different coatings. Both coatings were initially characterized in terms of chemical composition, thickness, morphology, structure, hardness, and adhesion to the substrate, being subsequently tested in laboratory equipment for wear tests following the block-on-ring configuration and relatively high levels of contact pressure, with a view to study the failure mechanisms of the coatings and their wear rate. CrN/CrCN/DLC multilayered coatings presented a better overall wear behavior, whereas B4C coating showed a good wear behavior regarding the load and configuration used, but in line with the behavior already observed when other wear testing configurations had been used. Thus, under the conditions imposed, CrN/CrCN/DLC coatings is the best option when high contact pressure is applied to the coated surfaces.

Effect of Reinforcements on the Sliding Wear Behavior of Self-Lubricating AZ91D-SiC-Gr Hybrid Composites

2022 ◽  
Vol 10 (1) ◽  
pp. 1-19
Author(s):  
Sandeep Kumar Khatkar ◽  
Rajeev Verma ◽  
Suman Kant ◽  
Narendra Mohan Suri
Keyword(s):  
Wear Rate ◽  
Sliding Wear ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Signal To Noise Ratio ◽  
Normal Load ◽  
Critical Factor ◽  
Wear Properties ◽  
Pin On Disc ◽  
Sliding Distance

This article statistically investigates the effect of various parameters such as material factors: silicon carbide (SiC) reinforcement, graphite (Gr) reinforcement and mechanical factors: normal load, sliding distance and speed on the sliding wear rate of vacuum stir cast self-lubricating AZ91D-SiC-Gr hybrid magnesium composites. The sliding wear tests have been performed on pin-on-disc tribometer at 10-50N loads, 1-3m/s sliding speed and 1000-2000m sliding distance. It has been examined that hybrid composites yielded improved wear resistance with reinforcement of SiC and solid lubricant graphite. ANOVA and signal-to-noise ratio investigation indicated that applied load was the most critical factor influencing the wear rate, followed by sliding distance. Further, the AZ91D/5SiC/5Gr hybrid composite has exhibited the best wear properties. From the SEM and EDS analysis of worn surfaces, delamination was confirmed as the dominant wear mechanism for AZ91D-SiC-Gr hybrid composites.

scholarly journals SLIDING WEAR AND FRICTION BEHAVIOR OF FUEL ROD MATERIAL IN WATER AND DRY STATE

2012 ◽  
Vol 06 ◽  
pp. 479-484
Author(s):  
JIN MOO PARK ◽  
JAE HOON KIM ◽  
KYEONG LAK JEON ◽  
JUN KYU PARK
Keyword(s):  
Zirconium Alloy ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Volume ◽  
Surface Zone ◽  
Friction Behavior ◽  
Fuel Rod ◽  
Heat Treated ◽  
Pin On Disc ◽  
Sliding Distance

In water cooled reactors, the friction between spacer grid and fuel rod can lead to severe wear and it is an important topic to study. In the present study, sliding wear behavior of zirconium alloy was investigated in water and dry state using the pin-on-disc sliding wear tester. Sliding wear resistance of zirconium alloy against heat treated inconel alloy was examined at room temperature. The parameters in this study were sliding velocity, axial load and sliding distance. The wear characteristics of zirconium alloy was evaluated by friction coefficient, specific wear rate and wear volume. The micro-mechanisms responsible for wear in zirconium alloy were identified to be micro-cutting, micro-pitting, delamination and micro-cracking of deformed surface zone.

WEAR STUDY OF JUTE FIBER POLYMER COMPOSITE — INFLUENCE OF MONTMORILLONITE NANOPARTICLES

2020 ◽  
pp. 2050040
Author(s):  
S. ARULMURUGAN ◽  
N. VENKATESHWARAN
Keyword(s):  
Wear Rate ◽  
Hybrid Composites ◽  
Jute Fiber ◽  
Wear Testing ◽  
Testing Method ◽  
Surface Samples ◽  
Pin On Disc ◽  
Working Parameters ◽  
Matrix Concentration ◽  
Sliding Distance

This paper presents the tribological examination of various percentages of montmorillonite nanoclay-filled polyester composites and jute fiber reinforced hybrid composites by the Pin on Disc wear testing method. The wear rate and coefficient of friction were investigated for each composition with the working parameters like applied load (10,20,30[Formula: see text]N), sliding speed (3[Formula: see text]m/s), and sliding distance (1500[Formula: see text]m). The reduction in the wear rate was found on the inclusion of 5[Formula: see text]wt.% clay and 25[Formula: see text]wt.% jute fiber and further addition of fiber changes the trend due to the reduced matrix concentration. The wear mechanism of the worn-out surface samples was studied using scanning electron microscopy.

Abrasive Wear Performance of Aluminium Modified Epoxy-Glass Fiber Composites

2015 ◽  
Vol 03 (03n04) ◽  
pp. 1550005 ◽  
Author(s):  
Vikram G. Kamble ◽  
Punyapriya Mishra ◽  
Hassan A. Al Dabbas ◽  
H. S. Panda ◽  
Johnathan Bruce Fernandez
Keyword(s):  
Abrasive Wear ◽  
Glass Fiber ◽  
Wear Behavior ◽  
Fiber Composite ◽  
Matrix Material ◽  
Testing Machine ◽  
Wear Testing ◽  
Aluminum Particles ◽  
Pin On Disc ◽  
Modified Epoxy

For a long time, Aluminum filled epoxies molds have been used in rapid tooling process. These molds are very economical when applied in manufacturing of low volume of plastic parts. To improve the thermal conductivity of the material, the metallic filler material is added to it and the glass fiber improves the wear resistance of the material. These two important parameters establish the life of composites. The present work reports on abrasive wear behavior of Aluminum modified epoxy and glass fiber composite with 5 wt.% and 10 wt.% of aluminum particles. Through pin on disc wear testing machine, we studied the wear behaviors of composites, and all these samples were fabricated by using hand layup process. Epoxy resin was used as matrix material which was reinforced with Glass fiber and Aluminum as filler. The composite with 5 wt.% and 10 wt.% of Al was cast with dimensions 100 × 100 × 6 mm. The specimens were machined to a size of 6 × 6 × 4 mm for abrasive testing. Abrasive tests were carried out for different grit paper sizes, i.e., 150, 320, 600 at different sliding distance, i.e., 20, 40, 60 m at different loads of 5, 10 and 15 N and at constant speed. The weight loss due to wear was calculated along with coefficient of friction. Hardness was found using Rockwell hardness machine. The SEM morphology of the worn out surface wear was analyzed to understand the wear mechanism. Results showed that the addition of Aluminum particles was beneficial for low abrasive conditions.

The Effects of Applied Load on Wear Behavior of Al-Quarry Dust Particle Composite Disc Sliding against Automobile Brake Material

2014 ◽  
Vol 592-594 ◽  
pp. 1357-1361 ◽  
Author(s):  
M. Ramesh ◽  
T. Karthikeyan ◽  
A. Kumaravel ◽  
C. Kumaari
Keyword(s):  
Wear Rate ◽  
Applied Load ◽  
Wear Behavior ◽  
Dust Particles ◽  
Dry Sliding Wear ◽  
Sem Image ◽  
Pin On Disc ◽  
Sliding Distance ◽  
Wear Tests ◽  
Quarry Dust

The wear behavior of aluminium alloy (A356) reinforced with 5 wt. % of quarry dust particles composite disc was sliding against automobile brake friction lining pin was investigated. Dry sliding wear studies were investigated in pin-on-disc apparatus. The wear tests were carried out range of applied load 20 to 60 N and constant sliding velocity (0.5 m/s) under sliding distance of 500 m. The wear behavior of aluminium metal matrix composite (AMC) has been compared with the commercially used 25 grade Gray Cast Iron disc (GCI).The results showed that the wear rate of AMC disc decreased with increasing the applied load. However the wear rate of AMC disc with respective pin decreased with increasing the applied load. The coefficient friction increased with increasing the applied load. The scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDAX) used to investigate the disc and pin. The wear debris was analyzed by SEM image.

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