Hydrophysics

Hydrophysics

Crack Detection in a Rectangular Plate of Surface Effect Floats Using the Singular Spectrum Algorithm (SSA)

Document Type : Original Article

Authors
Mohammad Shirzadifar 1
Ali Abdolahifar 2
1 Faculty of Naval Aviation Maleke Ashtar University of Technology., Iran
2 Faculty of Naval Aviation Maleke Ashtar University of Technology, Iran,
Abstract
 This article investigates the detection of a crack measuring five centimeters in length and one millimeter in depth in a rectangular aluminum 6061 plate with a thickness of one millimeter, used in surface effect floats. Initially, the rectangular plate and crack were modeled and subjected to impact simulation using Abaqus software. Subsequently, strain data from various points on the structure were extracted from Abaqus, contaminated with noise, and then decomposed into their intrinsic modes using the Singular Spectrum Algorithm (SSA). The standard deviation of each mode was calculated to facilitate fault detection. The results demonstrate the high capability of this method to simultaneously identify multiple defects, particularly in the shell structure of surface effect floats.
Keywords
Singular Spectrum Algorithm
Crack Detection
Impact Loading
Surface Effect Float Hull Structure

Subjects

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  • Receive Date 18 November 2024
  • Revise Date 14 February 2025
  • Accept Date 06 March 2026