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Published in:

Volume 8 Issue 1
January-2021
eISSN: 2349-5162

Unique Identifier

JETIR2101099

Page Number

739-746

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Title

DETERMINATION OF DAMAGE TOLERANCE OF COMPOSITE LAMINATE SUBJECTED TO STRESS-CORROSIVE ENVIRONMENT

ISSN

2349-5162

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"DETERMINATION OF DAMAGE TOLERANCE OF COMPOSITE LAMINATE SUBJECTED TO STRESS-CORROSIVE ENVIRONMENT ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 1, page no.739-746, January-2021, Available :http://www.jetir.org/papers/JETIR2101099.pdf

Abstract

Abstract— Composite materials are widely used in aerospace and other fields, mainly due to their light weight, high strength to weight ratio, chemical resistance and high fatigue life. Polymer matrix composites find extensive applications in aerospace industries. Currently fiber reinforced polymer matrix composites constitute more than 90% of the total composite used in aerospace industry. This research presents the recent trends in the mechanical characterization of composite systems exposed to sea water environments. This work provides an insight on very long-term degradation of epoxy and polyester-fiber glass composites immersed more than 720 hours in saline medium under service stresses. Samples were loaded under bending conditions with stresses both in the elastic and plastic fields, the result that characteristics in a flexural mode were able to be determined and the ensuing decrease in characteristics was fitted to an exponential model. The degree of losses ranged from 28% to 35% for the flexural strength. The most notable losses were for specimens immersed in natural sea water under a continuous stress of some load, corresponding to the plastic behavior of the material. First, a testing protocol for environmental effects has been developed for resin infused in-house fabricated laminates. Unidirectional ([0] and [90]) mechanical test samples were submerged in synthetic sea water at 24°C and 25°C, with the weight recorded at time intervals over the entire period. The fatigue resistance of environmentally conditioned samples is reduced at high stress levels, but matches the un-conditioned samples at low stress levels. The Flexular strength after period of time has been decreased whereas the water absorption has increased slightly.

Key Words

Polyester, Sea water, Mechanical, Flexural Strength

Cite This Article

"DETERMINATION OF DAMAGE TOLERANCE OF COMPOSITE LAMINATE SUBJECTED TO STRESS-CORROSIVE ENVIRONMENT ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp739-746, January-2021, Available at : http://www.jetir.org/papers/JETIR2101099.pdf

Publication Details

Published Paper ID: JETIR2101099
Registration ID: 304975
Published In: Volume 8 | Issue 1 | Year January-2021
DOI (Digital Object Identifier):
Page No: 739-746
ISSN Number: 2349-5162

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Cite This Article

"DETERMINATION OF DAMAGE TOLERANCE OF COMPOSITE LAMINATE SUBJECTED TO STRESS-CORROSIVE ENVIRONMENT ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp739-746, January-2021, Available at : http://www.jetir.org/papers/JETIR2101099.pdf




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