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Engineering Science and Materials Commons™
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- Keyword
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- ABAQUS; Aluminum alloys; Composite materials; Crystallography; Damage detection; Failure (mechanical); Laminated composites; Laminates; Laminating; Mechanisms; Nondestructive examination; Piezoelectric actuators; Piezoelectricity; Power quality; Structural analysis (1)
- Actuators and sensors; Computational technique; Finite element simulations; Finite element solution; Micro-mechanical modeling; Piezoelectric wafer active sensors; Symmetric laminated; Transformation field analysis (1)
- Averaging models (1)
- Bending (1)
- Finite element method (1)
Articles 1 - 2 of 2
Full-Text Articles in Engineering Science and Materials
Detecting Laminate Damage Using Embedded Electrically Active Plies – An Analytical Approach, Amany Micheal, Yehia Bahei-El-Din
Detecting Laminate Damage Using Embedded Electrically Active Plies – An Analytical Approach, Amany Micheal, Yehia Bahei-El-Din
Centre for Advanced Materials
Assessment of damage initiation and progression in composite laminates with embedded electrically active plies is modeled. Utilizing electrically active layers embedded in composite laminates as damage sensors is proposed by several researchers and is mainly assessed experimentally. Sensing damage using embedded electrically active plies is generally preferred over the use of surface mounted PZT wafers since the range of the latter is limited to a very narrow area underneath the surface, while multiple damage mechanisms can generally be found in several plies of the laminate. The solution presented invokes two levels of analysis. Firstly, on the laminate level, applied membrane …
Finite Element Simulation Of Pzt-Aided Interrogation Of Composite Laminates Exhibiting Damage, Amany Micheal, Yehia Bahei-El-Din
Finite Element Simulation Of Pzt-Aided Interrogation Of Composite Laminates Exhibiting Damage, Amany Micheal, Yehia Bahei-El-Din
Centre for Advanced Materials
Piezoelectricity has proved effective in capturing changes in structures caused by various damage mechanisms. In one approach, piezoelectric wafer active sensors (PWAS) are mounted on the surface of the host structure and utilized as both actuators and sensors to interrogate the structure and monitor its health. This is achieved by subjecting the PWAS to a transient electric pulse and reading the resulting voltage. Changes in the stiffness of the substrate due to structural damage affect the response of the PWAS, which could be correlated to integrity of the structure. Applying this technique to fibrous composite laminates encounters particular challenges due …