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http://dx.doi.org/10.3795/KSME-A.2014.38.11.1265

Progressive Failure Analysis of Adhesive Joints of Filament-Wound Composite Pressure Vessel  

Kim, Junhwan (Graduate School of Mechanical Design Engineering, Hanbat Nat'l Univ.)
Shin, Kwangbok (Dept. of Mechanical Engineering, Hanbat Nat'l Univ.)
Hwang, Taekyung (Agency for Defence Development)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.11, 2014 , pp. 1265-1272 More about this Journal
Abstract
This study performed the progressive failure analysis of adhesive joints of a composite pressure vessel with a separated dome by using a cohesive zone model. In order to determine the input parameters of a cohesive element for numerical analysis, the interlaminar fracture toughness values in modes I and II and in the mixed mode for the adhesive joints of the composite pressure vessel were obtained by a material test. All specimens were manufactured by the filament winding method. A mechanical test was performed on adhesively bonded double-lap joints to determine the shear strength of the adhesive joints and verify the reliability of the cohesive zone model for progressive failure analysis. The test results showed that the shear strength of the adhesive joints was 32MPa; the experiment and analysis results had an error of about 4.4%, indicating their relatively good agreement. The progressive failure analysis of a composite pressure vessel with an adhesively bonded dome performed using the cohesive zone model showed that only 5.8% of the total adhesive length was debonded and this debonded length did not affect the structural integrity of the vessel.
Keywords
Composite Pressure Vessel; Cohesive Zone Model; Interlaminar Fracture Toughness; Progressive Failure Analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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