scholarly journals Effect on the Mechanical Properties of Al 7075 Reinforced with SiC and TiC Particles

2020 ◽  
Vol 10 (1) ◽  
pp. 287-290
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Matrix Material ◽  
Testing Machine ◽  
Charpy Impact ◽  
Experimental Result ◽  
Structural Domain ◽  
Unreinforced Alloy ◽  
Al 7075 ◽  
The Impact

In the present industrial scenario, Aluminium and its alloy based composites have more importance in the growing fields of engineering. Aluminium reinforced metal matrix composites are broadly speaking desired because it has the excessive strenth along with less weight, hardness, corrosion resistance, fatigue and creep resistance. The Al composites are focused to use in aerospace, automobile and also in structural domain because it gives good strength with less weight. This paper discussed about the mechanical residences of Aluminium 7075 alloy strengthened with SiC and TiC. Stir casting process was utilized for fabrication of composites and composite specimens are subjected to tensile test by using Universal Testing Machine. The composite hardness was tested by using Brinell hardness tester and the Charpy impact tester used for findings the impact strength. An experimental results are compared with unreinforced alloy of Al 7075. Micro structural characterization confirms the particles of reinforcement are distributed to the entire structure of matrix. The experimental result shows the mechanical properties slightly increased by varying wt% of reinforcements in the matrix material. The better tensile strength (252MPa), hardness (83HB) and impact strength (4.6 Joules) is obtained by the composition of 60% wt of Al 7075, 20% wt of TiC and 20 %wt of SiC.

scholarly journals Mechanical Properties for Elephant Dung and its Utilization as a Raw Material Composites Sheet: A Study

2021 ◽  
Vol 10 (1) ◽  
pp. 1-7
Author(s):  
Rohit Kumar ◽  
Ramratan . ◽  
Anupam Kumar ◽  
Rajinder Singh Smagh
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Polymer Composite ◽  
Natural Fiber ◽  
Testing Machine ◽  
Raw Material ◽  
Weight Percentage ◽  
The Impact ◽  
Elephant Dung

Elephant dung is an excellent source of cellulosic fiber that is a basic requirement for paper making. But they contributed to very small percentage production of elephant dung. So, researchers are trying to find a new area of utilization of elephant dung fiber pulp as in reinforcement’s polymer composite. In this experiment element dung fiber pulp in the natural fiber component chemically treated with alkaline and soda AQ solution in this study, it has been aimed to use elephant dung fiber pulp in composite material and to study mechanical properties of the produced material. The produced composite samples were then characterized using tensile test, Izod impact test, thickness test. The fracture surface of the polymer composite sample was also inspected with the help of SEM. The content of elephant dung fiber pulp is varied (35%, 45%, 55%) weight percentage whereas the epoxy resin is varied (50%, 40%, 30%) percentage is kept constant 15% in hardener. The entire sample has been tested in a universal testing machine as per ASTM standard for tensile strength and impact strength. It is observed that composite with 35% fiber pulp is having the highest tensile strength of 4mm 6.445 Mpa and 8mm 11.80 Mpa. The impact strength of composite with 35% fiber pulp washes highest than 45% to 55% dung fiber pulp. This produces composite sheet will be used for the surfboards, sporting goods, building panel this not only reduces the cost but also save from environmental pollution.

scholarly journals Impact Strength of Austenitic and Ferritic-Austenitic Cr-Ni Stainless Cast Steel in -40 and +20°C Temperature

2014 ◽  
Vol 59 (3) ◽  
pp. 1103-1106
Author(s):  
B. Kalandyk ◽  
R. Zapała ◽  
Ł. Boroń ◽  
M. Solecka
Keyword(s):  
Impact Strength ◽  
Volume Fraction ◽  
Cast Steel ◽  
Testing Machine ◽  
Charpy Impact ◽  
Impact Testing ◽  
Two Phase ◽  
Steel Grades ◽  
Charpy Impact Testing ◽  
The Impact

Abstract Studies described in this paper relate to common grades of cast corrosion resistant Cr-Ni steel with different matrix. The test materials were subjected to heat treatment, which consisted in the solution annealing at 1060°C followed by cooling in water. The conducted investigations, besides the microstructural characteristics of selected cast steel grades, included the evaluation of hardness, toughness (at a temperature of -40 and +20oC) and type of fracture obtained after breaking the specimens on a Charpy impact testing machine. Based on the results of the measured volume fraction of ferrite, it has been found that the content of this phase in cast austenitic steel is 1.9%, while in the two-phase ferritic-austenitic grades it ranges from 50 to 58%. It has been demonstrated that within the scope of conducted studies, the cast steel of an austenitic structure is characterised by higher impact strength than the two-phase ferritic-austenitic (F-A) grade. The changing appearance of the fractures of the specimens reflected the impact strength values obtained in the tested materials. Fractures of the cast austenitic Cr-Ni steel obtained in these studies were of a ductile character, while fractures of the cast ferritic-austenitic grade were mostly of a mixed character with the predominance of brittle phase and well visible cleavage planes.

Mechanical Properties of Hollow Glass Microspheres Filled Jute Woven Comingled Composites

2020 ◽  
Vol 858 ◽  
pp. 41-46
Author(s):  
Habib Awais ◽  
Yasir Nawab ◽  
Adnan Amjad ◽  
Aslina Anjang ◽  
Mohd Shukur Zainol Abidin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Tensile Properties ◽  
Charpy Impact ◽  
Hollow Glass Microsphere ◽  
Hollow Glass Microspheres ◽  
Hollow Glass ◽  
Weight Impact ◽  
The Impact

Hollow glass microsphere (HGM) filled jute composites were fabricated using woven comingled fabric. Tensile, drop weight impact and Charpy impact tests were conducted to study the effects of HGM to the jute laminates. The tensile properties were enhanced with the addition of 1.5 % HGM (19 % tensile strength and 6 % modulus) while further addition of HGM up to 3 % decreased the tensile properties (16 % tensile strength and 19 % modulus). The impact strength was improved by 10 % with the incorporation of 1.5 % HGM and an increase of 19 % was observed in the 3 % HGM composites compared to the control composites.

Influence of Natural Rubber/Poly (3-Trimethoxysilyl Propyl Methacrylate) Core-Shell Compatibilizer on Dynamic, Mechanical and Morphological Properties of PMMA/ENR Blends

2013 ◽  
Vol 747 ◽  
pp. 538-541 ◽  
Author(s):  
Suparat Nooma ◽  
Rathanawan Magaraphan
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Natural Rubber ◽  
Testing Machine ◽  
Morphological Properties ◽  
Core Shell ◽  
Melt Mixing ◽  
Propyl Methacrylate ◽  
Dynamic Mechanical ◽  
The Impact

In this work, epoxidized natural rubber (ENR) is used to improve the impact strength of poly (methyl methacrylate) (PMMA). The natural rubber with poly (3-trimethoxysilyl propyl methacrylate) core-shell (adNR), prepared by admicellar polymerization, is used as the compatibilizer for PMMA/ENR blends which were prepared through melt mixing in a twin screw extruder. The effects of ENR and adNR contents on impact property were investigated by pendulum impact tester. The impact strength increased with ENR and adNR contents. The morphology on the fracture surfaces were demonstrated by using field emission electron microscope (FE-SEM), which showed the compatibility between ENR, adNR and PMMA. Furthermore, the effects of ENR and adNR contents on dynamic and mechanical properties were examined by dynamic mechanical analyzer and universal testing machine, respectively. The results illustrated that the incorporation of the adNR affected the dynamic and mechanical properties of the blends.

Evaluation of Mechanical Properties of Jute and Kevlar Fiber Reinforced Materials

2018 ◽  
pp. 169-175 ◽  
Author(s):  
B. Rajesh ◽  
M. L. S. Devakumar
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Composite Materials ◽  
Impact Strength ◽  
Testing Machine ◽  
High Strength ◽  
Impact Testing ◽  
Test Results ◽  
Kevlar Fiber ◽  
The Impact

The purpose of this paper is to investigate the mechanical properties of kevlar fiber and jute fiber reinforcement. Nowadays the composite materials are widely used materials. Having wide range of applications due to its light weight, high strength and low cost. These composite materials are now being explored in applications of aerospace and automotive industries. In the present work, the composite material is prepared with intermediate aramid fabric layer (Kevlar) which is high strength fiber and it is combined with jute fabric reinforced epoxy composite to increase the strength of kevlar. This composite material is tested for mechanical properties like flexural, tensile & impact strength are calculated with UTM (universal testing machine) for flexural, tensile tests and impact testing is done with impact testing machine. Through this test results the impact strength of the composite material is calculated. The energy dissipation by impact test of jute and kevlar fabric composite and strength of fibers will be analyzed by scanning electron microscopy (FESEM). Thermo gravity analysis (TGA) and differential thermal analysis (DTA) is carried out. Through these test results it can conclude that the jute can be combined with the kevlar where the impact is primary considerations like bulletproof vests, automobile bodies, tyres etc. The usage of jute in all kevlar applications will increase the strength of kevlar by reducing the usage of Kevlar and cost will be minimized.

Experimental Investigation on Mechanical Properties of Wheat Husk Pulp Rein Forced Epoxy Composites

2020 ◽  
Vol 36 ◽  
pp. 114-125
Author(s):  
Kanwal Jit Singh ◽  
Rohit Kumar ◽  
Ramratan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Epoxy Resin ◽  
Testing Machine ◽  
Weight Percentage ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
The Impact ◽  
Wheat Husk

The wheat husk pulp epoxy resin composites were prepared by compression Molding Method and their physical and Mechanical Properties were studied by universal testing Machine. The composites were tested by tensile strength testing and impact strength tester. The content of Wheat husk pulp is varied (35%, 45%, 55%) weight percentage whereas the epoxy resin is varied (50%, 40%, 30%) percentage is kept constant 15% in hardener. Composites have been fabricated using hand layup technique using a suitable mold developed in industry. All the sample have been tested in Universal testing machine as per ASTM standard for tensile strength and impact strength it is observed that composite with 35% wheat husk pulp is having highest tensile strength of 4mm (4.29MPa) and 8mm (6.31Mpa). The impact strength of Composite with 35% wheat husk pulp was highest than 35%to 45% wheat husk pulp.

scholarly journals Impact strength of denture base and reline acrylic resins subjected to long-term water immersion

2011 ◽  
Vol 22 (1) ◽  
pp. 56-61 ◽  
Author(s):  
Amanda Fucci Wady ◽  
Ana Lucia Machado ◽  
Carlos Eduardo Vergani ◽  
Ana Cláudia Pavarina ◽  
Eunice Teresinha Giampaolo
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Water Immersion ◽  
Water Storage ◽  
Charpy Impact ◽  
Denture Base ◽  
Effect Of Water ◽  
Acrylic Resins ◽  
The Impact

Water may influence the mechanical properties of the acrylic resins. Thus, the effect of water storage on the impact strength (IS) of one denture base (Lucitone 550 - L) and four reline resins (Tokuyama Rebase II - T; UfiGel Hard - U; Kooliner - K; New Truliner - NT) was evaluated. Bars of L were made (60 x 6 x 2 mm) and relined (2 mm) with T, U, K, NT and L. Intact specimens of each material (60 x 6 x 4 mm) were also fabricated for comparative purposes. Specimens were submitted to Charpy impact tests without water storage (control) and after immersion in water for 7, 90 and 180 days. Data (kJ/m²) analyzed by two-way ANOVA and Tukey's test (p=0.05) revealed that after 90 days, U exhibited an increase in the IS (0.93) compared to 7 days (0.58). K (1.48) and L/K (7.21) exhibited a decrease at the 7-day period (1.01 and 3.23, respectively). NT (0.60) showed an increase in the IS after 180 days (1.52), whereas L/NT (7.70) showed a decrease (3.17). Water immersion improved the IS of U and NT, and decreased the IS of K, L/K, and L/NT. Water may affect differently the IS of acrylic resins and, consequently, the resistance to fracture of relined denture bases.

Impact Strength, Flexural Modulus and Wear Rate of PMMA Composites Reinforced by Eggshell Powders

2020 ◽  
Vol 38 (7A) ◽  
pp. 960-966
Author(s):  
Aseel M. Abdullah ◽  
Hussein Jaber ◽  
Hanaa A. Al-Kaisy
Keyword(s):  
Impact Strength ◽  
Wear Rate ◽  
Flexural Modulus ◽  
Matrix Material ◽  
Weight Fraction ◽  
Pure Pmma ◽  
Calcination Process ◽  
The Matrix ◽  
The Impact ◽  
Interface Bond

In the present study, the impact strength, flexural modulus, and wear rate of poly methyl methacrylate (PMMA) with eggshell powder (ESP) composites have been investigated. The PMMA used as a matrix material reinforced with ESP at two different states (including untreated eggshell powder (UTESP) and treated eggshell powder (TESP)). Both UTESP and TESP were mixed with PMMA at different weight fractions ranged from (1-5) wt.%. The results revealed that the mechanical properties of the PMMA/ESP composites were enhanced steadily with increasing eggshell contents. The samples with 5 wt.% of UTESP and TESP additions give the maximum values of impact strength, about twice the value of the pure PMMA sample. The calcination process of eggshells powders gives better properties of the PMMA samples compared with the UTESP at the same weight fraction due to improvements in the interface bond between the matrix and particles. The wear characteristics of the PMMA composites decrease by about 57% with increases the weight fraction of TESP up to 5 wt.%. The flexural modulus values are slightly enhanced by increasing of the ESP contents in the PMMA composites.

A novel recycled polyethylene terephthalate/polyamide 11 (rPET/PA11) thermoplastic blend

2021 ◽  
pp. 147776062110010
Author(s):  
Zahid Iqbal Khan ◽  
Zurina Binti Mohamad ◽  
Abdul Razak Bin Rahmat ◽  
Unsia Habib ◽  
Nur Amira Sahirah Binti Abdullah
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Flexural Strength ◽  
Polyethylene Terephthalate ◽  
Practical Implication ◽  
Polyamide 11 ◽  
Recycled Polyethylene ◽  
Twin Screw ◽  
Electron Microscopy Analysis ◽  
The Impact

This work explores a novel blend of recycled polyethylene terephthalate/polyamide 11 (rPET/PA11). The blend of rPET/PA11 was introduced to enhance the mechanical properties of rPET at various ratios. The work’s main advantage was to utilize rPET in thermoplastic form for various applications. Three different ratios, i.e. 10, 20 and 30 wt.% of PA11 blend samples, were prepared using a twin-screw extruder and injection moulding machine. The mechanical properties were examined in terms of tensile, flexural and impact strength. The tensile strength of rPET was improved more than 50%, while the increase in tensile strain was observed 42.5% with the addition of 20 wt.% of PA11. The improved properties of the blend were also confirmed by the flexural strength of the blends. The flexural strength was increased from 27.9 MPa to 48 MPa with the addition of 30 wt.% PA11. The flexural strain of rPET was found to be 1.1%. However, with the addition of 10, 20 and 30 wt.% of PA11, the flexural strain was noticed as 1.7, 2.1, and 3.9% respectively. The impact strength of rPET/PA11 at 20 wt.% PA11 was upsurged from 110.53 to 147.12 J/m. Scanning electron microscopy analysis revealed a dispersed PA11 domain in a continuous rPET matrix morphology of the blends. This work practical implication would lead to utilization of rPET in automobile, packaging, and various industries.

Hybridization effect on mechanical properties of short basalt/jute fiber-reinforced polyester composites

2013 ◽  
Vol 20 (4) ◽  
pp. 343-350 ◽  
Author(s):  
Pandian Amuthakkannan ◽  
Vairavan Manikandan ◽  
Jebbas Thangaiah Winowlin Jappes ◽  
Marimuthu Uthayakumar
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Hybrid Composites ◽  
Fiber Composite ◽  
Testing Machine ◽  
Basalt Fiber ◽  
Jute Fiber ◽  
Computer Assisted ◽  
Fiber Reinforced ◽  
Polyester Composites

AbstractMechanical properties of fiber reinforcement that can be obtained by the introduction of basalt fibers in jute fiber-reinforced polyester composites have been analyzed experimentally. Basalt/jute fiber-reinforced hybrid polymer composites were fabricated with a varying fiber percentage by using compression molding techniques. The fabricated composite plates were subjected to mechanical testing to estimate tensile strength, flexural strength and impact strength of the composites. The effect of fiber content on basalt/jute fiber in the composites has been studied. Addition of jute fiber into basalt fiber composite makes it a cost-effective one. Incorporation of basalt fiber into the composites was at approximately 10%, 20%, up to 90%, and the jute fiber percentage was reduced from 90%, 80%, to 10% correspondingly. Mechanical properties were investigated as per ASTM standards. Tensile and flexural strengths were tested by using a computer-assisted universal testing machine, and impact strength by using an Izod impact tester. It has been observed that the addition of jute fiber to the basalt fiber polyester composites enhanced the mechanical properties. Water absorption of hybrid composites was also analyzed and was found to be proportional to fiber percentage.

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