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- Title
An Interlaminar Strain Measurement for Insulation Panels of LNG Carriers.
- Authors
Kim, M. H.; Kim, D. H.; Kang, S. W.; Lee, J. M.
- Abstract
The aim of the study was to investigate the dynamic failure initiation as well as the failure modes of insulation panels of liquefied natural gas (LNG) carriers. Insulation panels of LNG cargo tanks may include mechanical failures such as cracks as well as delaminations within the layers because of impact sloshing loads and fatigue loadings, and these failures cause a significant decrease of the structural safety. In this study, a structural health monitoring system was developed that employs fibre optic sensors for monitoring various failures that can occur in LNG insulation panels. Fibre optic sensors have the advantage of being embedded inside the insulation panels. The measurement signal of embedded fibre optic sensor is used to calculate the strain distribution within insulation panels and is analysed to identify the damage initiation. It has been observed that the presence of defects and delaminations produce noticeable changes in the strain measurement in a predictable manner. In addition, fibre optic sensors are used to measure static and dynamic strain variations with and without damage. It is expected that this study will be used as a fundamental study for the safety assessment of LNG insulation panels.
- Subjects
LIQUEFIED natural gas; FIBER optics; DETECTORS; BIOSENSORS; OPTOELECTRONIC devices; INTEGRATED optics
- Publication
Strain, 2006, Vol 42, Issue 2, p97
- ISSN
0039-2103
- Publication type
Article
- DOI
10.1111/j.1475-1305.2006.00261.x