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American Journal of Materials Engineering and Technology

ISSN (Print): 2333-8903

ISSN (Online): 2333-8911

Website: http://www.sciepub.com/journal/MATERIALS

Current Issue» Volume 3, Number 2 (2015)

Article

Production of Motorcycle Anti-crash Helmet Shell from Composite Reinforced with Male Flower Bunch Stalk Fibre of Elaeis Guineensis

1Department Of Mechanical Engineering, Federal University of Technology, Minna, Nigeria


American Journal of Materials Engineering and Technology. 2015, 3(2), 27-34
DOI: 10.12691/materials-3-2-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Nuhu A. Ademoh, Olasoji C. Olanipekun. Production of Motorcycle Anti-crash Helmet Shell from Composite Reinforced with Male Flower Bunch Stalk Fibre of Elaeis Guineensis. American Journal of Materials Engineering and Technology. 2015; 3(2):27-34. doi: 10.12691/materials-3-2-2.

Correspondence to: Olasoji  C. Olanipekun, Department Of Mechanical Engineering, Federal University of Technology, Minna, Nigeria. Email: nuhuadam@yahoo.com; sojiolanipekun@gmail.com

Abstract

The use of natural fibres in polymer reinforcement has gained serious attention due the fact that they are biodegradable and possess qualities similar to synthetic fibres. Chemical treatments have been successfully used to improve the qualities and performance of natural fibres. This has made natural fibre reinforced polymer gain wide applications in the production of structural componentd. In this work anti-crash helmet was fabricated using the male flower bunch stalk fibre of elaeis guineensis treated with 5% concentrated sodium hydroxide (NaOH) and unsaturated polyester as binder. Hand lay-up method of casting composites was used for helmet fabrication process. Standard test samples were fabricated using same formulation and analysed for water absorption, physical and mechanical properties that included tensile strength, hardness, impact strength and modulus. The mechanical performance of treated reinforcement fibres and composite were determined and the results obtained were compared with past literature. The result showed that chemical treatment greatly improved the mechanical properties, hydrophobic and chemical stabilities of the natural fibres and made them more suitable for the application. Composites reinforced with 20% male flower bunch stalk fibre of oil palm (elaeis guineensis) gave the optimum performance in terms of tested properties of helmet. The composite formulation was also observed to have high potentials for production of related engineering components like car bumper, dash board, military and industrial safety helmets.

Keywords

References

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Article

Dental Ceramics: Part II – Recent Advances in Dental Ceramics

1Department of Prosthodontics, Vishnu Dental College, Bhimavaram, West Godavari, Andhra Pradesh, India

2Department of Dental Materials, Vishnu Dental College, Bhimavaram, West Godavari, Andhra Pradesh, India

3Department of Chemistry, Sasi Merit School, Bhimavaram, West Godavari, Andhra Pradesh, India


American Journal of Materials Engineering and Technology. 2015, 3(2), 19-26
DOI: 10.12691/materials-3-2-1
Copyright © 2015 Science and Education Publishing

Cite this paper:
Srinivasa Raju Datla, Rama Krishna Alla, Venkata Ramaraju Alluri, Jithendra Babu P, Anusha Konakanchi. Dental Ceramics: Part II – Recent Advances in Dental Ceramics. American Journal of Materials Engineering and Technology. 2015; 3(2):19-26. doi: 10.12691/materials-3-2-1.

Correspondence to: Rama  Krishna Alla, Department of Dental Materials, Vishnu Dental College, Bhimavaram, West Godavari, Andhra Pradesh, India. Email: ramakrishna.a@vdc.edu.in

Abstract

Over the last decade, it has been observed that there is an increasing interest in the ceramic materials in dentistry. Esthetically these materials are preferred alternatives to the traditional materials in order to meet the patients’ demands for improved esthetics. Dental ceramics are usually composed of nonmetallic, inorganic structures primarily containing compounds of oxygen with one or more metallic or semi-metallic elements. Ceramics are used for making crowns, bridges, artificial denture teeth, and implants. The use of conservative ceramic inlay preparations, veneering porcelains is increasing, along with all-ceramic complete crown preparations. The earlier ceramics are very fragile and can not with stand the high tensile forces. Several modifications have been made in ceramics in order to address this quandary. This article is a review of dental ceramics; divided into two parts such as part I and II. Part I reviews the composition, structure and properties of dental ceramics from the literature available in PUBMED and other sources from the past 50 years. Part II reviews the developments in evolution of all ceramic systems over the last decade and considers the state of the art in several extended materials and material properties.

Keywords

References

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