Structure analysis in aluminium 6061 using finite element analysis for damage detection

Hambali, Nurul Ain (2019) Structure analysis in aluminium 6061 using finite element analysis for damage detection. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Structural Health Monitoring (SHM) has been applied to maintain the safety and integrity of the structure in different applications such as aircraft, machine, and civil structure. Composite is commonly used in the aircraft field due to delamination and Barely Visible Impact Damage (BVID). Non-Destructive Inspection (NDI) techniques have been used to detect delamination, such as thermography, ultrasonic testing, Eddy current testing, acoustic emission testing, and radiography. But the structure needs to prepare for the operation to start the NDI operation if a large structure takes a long time. The main objective of this study is to detect the depth of crack of 0.5 mm, 1.0 mm and 2.5 mm in isotropic material. This study to identify mode shape displacement for each point in isotropic material. This study using Finite Element Analysis (FEA) conducted simulation data using ABAQUS software. The process begins with the creation of geometry using SolidWorks software and generates geometry for ABAQUS software, assigning material properties, selecting the type of element and creating a mesh, applying loads and constraints, and reviewing mode shape displacement results for 51 points. The result is to compare simulation results and experimental results using the hammer impact test. From the simulation data, the graph shows smooth curvature for control or undamaged specimen and damaged specimen is almost similar shape. But, a very slightly different shape compare to the graph of experimental result because there are too much and there was damage or defect in the specimen.

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