Experimental Study on Hoop Stress Affecting Braided Carbon Fiber Reinforced Plastics Subjected to Internal Pressure

Braided carbon fiber reinforced plastics (CFRPs) can be employed in the construction of pressurized vessels to increase performance and reduce overall weight. However, owing to the complex braiding structures resulting from the braiding process, an analysis of the elastic modulus is important as it...

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Bibliographic Details
Published inJournal of Textile Engineering Vol. 65; no. 1; pp. 11 - 17
Main Authors Endriatno, Nanang, KAWAI, Kento, SUEHIRO, Takuru, KITAYAMA, Satoshi, SAKAMOTO, Jiro, KINARI, Toshiyasu
Format Journal Article
LanguageEnglish
Published Osaka The Textile Machinery Society of Japan 15.02.2019
Japan Science and Technology Agency
Subjects
Braid
Braiding
Carbon fiber reinforced plastic (CFRP)
Carbon fiber reinforced plastics
Carbon fiber reinforcement
Cylinders
Elastic analysis
Elastic modulus
Hoop stress
Internal pressure
Modulus of elasticity
Polymers
Pressure vessels
Reinforced plastics
Steel construction
Strain
Vessels
Weight reduction
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Summary:Braided carbon fiber reinforced plastics (CFRPs) can be employed in the construction of pressurized vessels to increase performance and reduce overall weight. However, owing to the complex braiding structures resulting from the braiding process, an analysis of the elastic modulus is important as it affects the hoop stress on the pressure vessel. In this study, braided preformed CFRP constructed on a steel cylinder subjected to internal pressure was experimentally investigated using a simple approach that involved estimating the elastic modulus and hoop stress. Five types of braided preformed CFRP with different braiding angles and number of applied layers were analyzed. The elastic modulus and hoop stress can be estimated from these measurements of the internal pressure. The differences in the braided structures result in different strain values and affect the elastic modulus. High braiding angles tend to be more stable against high internal pressure, and exhibit small strain differences and high elastic modulus in the hoop direction. Similar results were observed when additional layers were applied. Increasing the braiding angle and the number of layers can increase the average elastic modulus.
ISSN:1346-8235
1880-1986
DOI:10.4188/jte.65.11