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http://dx.doi.org/10.14775/ksmpe.2015.14.5.120

Temperature Variations of Air Pocket in Type-3 Composite Vessel during Ambient Hydraulic Cycling Test  

Cho, Sung-min (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Kim, Kwang Seok (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Kim, Chang Jong (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Lyu, Geun-jun (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Lee, Yeon-jae (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Jo, Yun Seong (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
Lyu, Sung-Ki (School of Mechanical & Aerospace Eng., ReCAPT, Gyeongsang National Univ.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.14, no.5, 2015 , pp. 120-125 More about this Journal
Abstract
This research aims to increase the reliability and reproducibility of the ambient cycling test by properly making corrections to the test procedure. The vessel (106 L) is initially filled with 70 L of water and horizontally placed on a balance. The pressure range inside the vessel varies from 2.5 to 25.9 MPa at the frequency of 6 cycles per minute. After reviewing the results, there was a temperature difference of approximately $10^{\circ}C$ between the air pocket and the water, and the upper part of the liner faced a repeated temperature change of $40^{\circ}C$. It is possible for the aluminum liner of the composite vessel to be damaged by such a sharp change in temperature. Additionally, as a result, no pass having anything to do with the purpose of the test would occur. Therefore, it is suggested that the air pocket be completely removed.
Keywords
Ambient Hydraulic Cycling Test; Type3 Composite Vessel; Internal Temperature Variations;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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