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http://dx.doi.org/10.5574/KSOE.2017.31.3.241

Cryogenic Mechanical Characteristics of Laminated Plywood for LNG Carrier Insulation System  

Kim, Jeong-Hyeon (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Park, Doo-Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Choi, Sung-Woong (Korea Institute of Machinery and Materials (KIMM), LNG Cryogenic Technology Center)
Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
Journal of Ocean Engineering and Technology / v.31, no.3, 2017 , pp. 241-247 More about this Journal
Abstract
Plywood, which is created by bonding an odd number of thin veneers perpendicular to the grain orientation of an adjacent layer, was developed to supplement the weak points such as contraction and expansion of conventional wood materials. With structural merits such as strength, durability, and good absorption against impact loads, plywood has been adopted as a structural material in the insulation system of a membrane type liquefied natural gas (LNG) carrier. In the present study, as an attempt to resolve recent failure problems with plywood in an LNG insulation system, conventional PF (phenolic-formaldehyde) resin plywood and its alternative MUF (melamine-urea-formaldehyde) resin bonded plywood were investigated by performing material bending tests at ambient ($20^{\circ}C$) and cryogenic ($-163^{\circ}C$) temperatures to understand the resin and grain effects on the mechanical behavior of the plywood. In addition, the failure characteristics of the plywood were investigated with regard to the grain orientation and testing temperature.
Keywords
Plywood; Liquefied natural gas insulation system; Cryogenic environments; Mechanical characteristics; Failure characteristics;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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