scholarly journals Mechanical Properties of Cement Composites Using Modified Plastics by Gamma Irradiation

2021 ◽  
Vol 11 (24) ◽  
pp. 11982
Author(s):  
Hyeonwook Cheon ◽  
Jamshid Ruziev ◽  
Heonseok Lee ◽  
Yonghak Kang ◽  
Seungjun Roh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Gamma Irradiation ◽  
Physical Performance ◽  
Environmental Sustainability ◽  
Gamma Ray ◽  
Cement Composites ◽  
Radiation Technology ◽  
Property Evaluation ◽  
Plastic Wastes

Recently, pollution caused by an increasing amount of worldwide plastic waste has become a global problem. However, these concerns can be alleviated by the use of gamma-ray technology. Using radiation technology, plastic wastes can be converted into a variety of useful purposes presenting powerful opportunities for environmental sustainability and material innovations. Plastics are strong, durable, waterproof, lightweight, easy to mold, and recyclable. In this study, plastic aggregate modified by gamma irradiation was mixed into cement composites, and mechanical property evaluation experiments were conducted. As a result, it was confirmed that the physical performance of cement composites was improved by up to 70% in the case of using the modified plastic aggregates compared to the general plastic aggregate.

Mechanical Property Evaluation Aluminium 6061 Nickel Coated Cenosphere Composites

2020 ◽  
Vol 22 (4) ◽  
pp. 1381-1388
Author(s):  
A. Ahamed ◽  
T. Prashanth
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Aluminium Alloys ◽  
Matrix Material ◽  
Tensile Behaviour ◽  
Good Corrosion Resistance ◽  
Property Evaluation ◽  
Notable Increase ◽  
Prepared Composite ◽  
Fly Ash Cenospheres

AbstractIn recent years, among all the aluminium alloys, Al6061 is gaining much popularity as a matrix material to prepare MMCs owing to its excellent mechanical properties and good corrosion resistance. Fly ash cenospheres are primarily a by-product in power generation plants. Research is in progress to effectively use this byproduct to produce new usable and profitable materials as they pose major disposal and environmental problems. In the light of the above, the present investigation is aimed at development of metal coated cenosphere reinforced Al6061 composites and to characterize their mechanical properties. Al6061 nickel coated composites have been prepared by liquid metallurgy route by varying percentage of nickel coated cenospheres between 2–10% by weight in steps of 2%. Density, hardness and tensile behaviour of the composites is carried out. It is observed that there is an increase in the values of hardness, density of the composite with an increasing percentage of the nickel coated cenosphere reinforcements. There is also a notable increase in the tensile strength as well as reduction in ductility of the prepared composite. Fractographs to indicate the behaviour of the composites have also been depicted in the paper.

scholarly journals The effect of gamma ray on the thermo-mechanical property of silk fibroin

2013 ◽  
Vol 17 (5) ◽  
pp. 1521-1522 ◽  
Author(s):  
Huanyu Jin ◽  
Hua Yin ◽  
Yan An
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Silk Fibroin ◽  
Gamma Ray

This paper studies the effect of gamma ray on the thermo-mechanical properties of silk fibroin experimentally. The experiment reveals that the gamma ray can accelerate biodegradation of silk fibroin by decreasing its thermo-mechanical property.

scholarly journals Mechanical Property Evolution of Jute and E-glass fiber Hybrid Polymer Matrix composites

2019 ◽  
pp. 115-121
Author(s):  
Chanikya Kavvuru ◽  
M. L. S. Devakumar
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Light Weight ◽  
Matrix Composites ◽  
Jute Fibre ◽  
Hybrid Polymer ◽  
Compression Load ◽  
Property Evaluation

Now a day’s Natural Fibres Composites owing importance due to its Bio degradability, Light weight & Strength etc ., This project aims to investigate Mechanical Property evaluation of Jute fibre Eglass fiber, without chemical treatment and applied an compression load on the Jute fibre layers to be in uniform and Unidirectional. To evaluate the mechanical properties and weights of specimens are2 and 3 layeers taken, Epoxy & Hardener constant for all specimens. The Specimens prepared by Hand layup technique and specimen cuts with Manual Hacksaw frame and applied smooth filing to avoid notches during cutting. Testing’s for Mechanical properties evaluation used are tensile, and 3-Point Flexural testing’s on computerized UTM (INSTRON 3369). Hardness and Impact tests also performed per the ASTM standards.

Mechanical properties of kenaf fiber–cement composites containing kenaf gamma-ray grafted with acrylamide

2014 ◽  
Vol 60 (4) ◽  
pp. 263-268 ◽  
Author(s):  
Du-Yeong Kim ◽  
Joon-Pyo Jeun ◽  
Hyun-Bin Kim ◽  
Phil-Hyun Kang
Keyword(s):  
Mechanical Properties ◽  
Gamma Ray ◽  
Cement Composites ◽  
Kenaf Fiber

Effects of Gamma Irradiation on the Structure and Mechanical Properties of Wild Silkworms and Bombyx Mori Silk Fibroin Films

2011 ◽  
Vol 197-198 ◽  
pp. 27-31 ◽  
Author(s):  
Si Yong Xiong ◽  
Ya Mei Xu ◽  
Yu Hong Jiao ◽  
Lu Wang ◽  
Ming Zhong Li
Keyword(s):  
Mechanical Properties ◽  
Gamma Irradiation ◽  
Silk Fibroin ◽  
Gamma Ray ◽  
Molecular Conformation ◽  
Covalent Bonds ◽  
Secondary Bonds ◽  
Aggregation Structure ◽  
Bombyx Mori Silk ◽  
Ft Ir

The structure and mechanical properties of A. yamamai, A. perny and B. mori silk fibroin films irradiated by gamma ray with various doses of 0, 25, 50, 100 and 200 kGy, respectively were determined by XRD, FT-IR, DSC and Instron 3365 equipment. Results showed that the aggregation structure and molecular conformation of A. yamamai, A. perny and B. mori silk fibroin films irradiated by gamma ray with those doses mentioned above were not significantly changed. However, with the increase of radiation intensity, the thermal stability of silk fibroin films declined slightly, and the breaking strength and extensibility reduced significantly, due to the breakdown of parts of secondary bonds and covalent bonds. These results suggested that, when these silk fibroin materials were sterilized by gamma irradiation, smaller radiation doses should be used, otherwise irreversible damages on these materials would be caused.

Powder Metallurgy Processing of High Strength Turbine Disk Alloys

1976 ◽  
Author(s):  
D. J. Evans
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
High Strength ◽  
Turbine Disk ◽  
Turbine Engine ◽  
Forging Process ◽  
Property Evaluation ◽  
Heat Treated ◽  
Temperature Capability ◽  
Control Procedures

Using vacuum-atomized AF2-1DA and Mar-M432 powders, full-scale gas turbine engine disks were fabricated by hot isostatically pressing (HIP) billets which were then isothermally forged using the Pratt & Whitney Aircraft GATORIZING™ forging process. While a sound forging was produced in the AF2-1DA, a container leak had occurred in the Mar-M432 billet during HIP. This resulted in billet cracking during forging. In-process control procedures were developed to identify such leaks. The AF2-1DA forging was heat treated and metallographic and mechanical property evaluation was performed. Mechanical properties exceeded those of Astroloy, one of the highest temperature capability turbine disk alloys presently used.

scholarly journals Physical and Mechanical Property Evolution of Jute and E-glass fiber Hybrid PMC'S

2020 ◽  
pp. 325-331
Author(s):  
Dharmendra Kumar Singh ◽  
Kunuthur Manohar Reddy ◽  
L. Balasubramanyam
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Glass Fiber ◽  
Chemical Treatment ◽  
Natural Fibres ◽  
Light Weight ◽  
Jute Fibre ◽  
Compression Load ◽  
Impact Tests ◽  
Property Evaluation

Now a day’s Natural Fibres Composites owing importance due to its Bio degradability, Light weight& Strength etc ., This project aims to investigate Mechanical Property evaluation of Jute fibre Eglassfiber, without chemical treatment and applied an compression load on the Jute fibre layers to be in uniform and Unidirectional. To evaluate the mechanical properties and weights of specimens are2 and 3 layeerstaken, Epoxy & Hardener constant for all specimens. The Specimens prepared by Hand layup technique and specimen cuts with Manual Hacksaw frame and applied smooth filing to avoid notches during cutting. Testing’s for Mechanical properties evaluation used are tensile, and 3-Point Flexural testing’s on computerized UTM (INSTRON 3369). Hardness and Impact tests also performed per the ASTM standards.

Mechanical Properties Evaluation of Nanofiber/Webs

2011 ◽  
Vol 464 ◽  
pp. 20-23 ◽  
Author(s):  
Yuji Enomoto ◽  
Ick Soo Kim
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Textile Industry ◽  
High Strength ◽  
Strength Measurement ◽  
Ultrafine Fibers ◽  
Nanometer Size ◽  
Friction Tester ◽  
Property Evaluation ◽  
Nanofiber Web

Recently ultrafine fibers of nanometer size and their fabrics are growingly interested not only in textile industry but also in non-textile industry, as they have excellent properties of lightness, high strength, comfort, function and etc as compared to those of conventional fibers. Evaluation of the mechanical properties is, then, important in connection with the reliability and durability of the products. Since commercialized machines are not always conventionally designed for mechanical property evaluation of nanofiber in any environments; air or fluids. We have, therefore, conducted to develop versatile testers including tension tester for strength measurement and friction tester for handle measurement. In this note, we present typical results for evaluation of mechanical properties of nanofiber/ web fabricated by means of an electrospining method.

Mechanical Property Studies on Flax Fiber Reinforced Basalt Powder Filled Polyester Composite

2020 ◽  
Vol 13 ◽  
Author(s):  
V. Arumugaprabu ◽  
K.Arun Prasath ◽  
S. Mangaleswaran ◽  
M. Manikanda Raja ◽  
R. Jegan
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Natural Fiber ◽  
Tensile Load ◽  
Flax Fiber ◽  
Flexural Properties ◽  
Weight Percentage ◽  
Tensile Impact ◽  
Polyester Composite ◽  
Additional Support

: The objective of this research is to evaluate the tensile, impact and flexural properties of flax fiber and basalt powder filled polyester composite. Flax fiber is one of the predominant reinforcement natural fiber which possess good mechanical properties and addition of basalt powder as a filler provides additional support to the composite. The Composites are prepared using flax fiber arranged in 10 layers with varying weight percentage of the basalt powder as 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.% and 30 wt.% respectively. From the results it is inferred that the composite combination 10 Layers of flax / 5 wt.%, basalt Powder absorbs more tensile load of 145 MPa. Also, for the same combination maximum flexural strength is about 60 MPa. Interestingly in the case of impact strength more energy was absorbed by 10 layers of flax and 30 wt.% of basalt powder. In addition, the failure mechanism of the composites also discussed briefly using SEM studies.

scholarly journals Regulating Effect of Cement Accelerator on High Content Solid-Wastes Autoclaved Aerated Concrete (HCS-AAC) Slurry Performance and Subsequent Influence

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 799
Author(s):  
Dingkun Xie ◽  
Lixiong Cai ◽  
Jie Wang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Solid Wastes ◽  
Hydration Products ◽  
Promoting Effect ◽  
Adverse Side Effects ◽  
Foaming Process ◽  
Carbide Slag ◽  
Negative Effect ◽  
Aerated Concrete

Adverse side-effects occurred in slurry foaming and thickening process when carbide slag was substituted for quicklime in HCS-AAC. Cement accelerators were introduced to modify the slurry foaming and coagulating process during pre-curing. Meanwhile, the affiliated effects on the physical-mechanical properties and hydration products were discussed to evaluate the applicability and influence of the cement accelerator. The hydration products were characterized by mineralogical (XRD) and thermal analysis (DSC-TG). The results indicated that substituting carbide slag for quicklime retarded slurry foaming and curing progress; meanwhile, the induced mechanical property declination had a negative effect on the generation of C–S–H (I) and tobermorite. Na2SO4 and Na2O·2.0SiO2 can effectively accelerate the slurry foaming rate, but the promoting effect on slurry thickening was inconspicuous. The compressive strength of HCS-AAC obviously declined with increasing cement coagulant content, which was mainly ascribed to the decrease in bulk density caused by the accelerating effect on the slurry foaming process. Dosing Na2SO4 under 0.4% has little effect on the generation of strength contributing to hydration products while the addition of Na2O·2.0SiO2 can accelerate the generation and crystallization of C–S–H, which contributed to the high activity gelatinous SiO2 generated from the reaction between Na2O·2.0SiO2 and Ca(OH)2.

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