Mr. Md. Younus Ali Profile

Md. Younus Ali

at Univ of New South Wales

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 16 April 2013 Paper

Agent based damaged detection in composite laminates

Md. Younus Ali, Krishna Shankar

Proceedings Volume 8694, 86942A (2013) https://doi.org/10.1117/12.2009557

KEYWORDS: Composites, Numerical simulations, Systems modeling, System identification, Carbon, Fiber reinforced polymers, Damage detection, Optical simulations, Interference (communication), Modeling

Read Abstract +

In this paper, we present undamaged agent based, an effective damage identification technique along with Eigen-system Realization Algorithm (ERA) for damage assessment in laminated composite structures. Unlike the use of frequency measurements, this technique has the potential to readily pinpoint the location and the extent of damage, in addition to alerting to its occurrence. The proposed technique is implemented through numerical simulation and experimentation on laminated beams with and without delaminations. For numerical simulation, a Sate-space based finite element system model (SS-FESM) is employed to generate transient impulse response signals. In this study, we employ ERA for system identification of fibre reinforced composite laminates to identify the presence of delaminations and assess their location and severity. The impulse response and the input signals are feed into ERA to estimate the normalized dynamic properties, namely the stiffness and damping coefficients of all elements in the structure. Variations in the dynamic properties readily identify the presence of damage, however, the location and severity of the damage is assessed or determined through undamaged agent based iterating technique. The numerical simulation of 8 ply quasi-isotropic Carbon Fiber Reinforced Polymer (CFRP) laminated beams demonstrate the delaminations as small as one percent of the beam length in size can be identified and assessed using the present method. Experimental simulations indicate that noise in the measured impulse signals need to be eliminated for successful practical implementation of the technique.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years