Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 19, Number 1, January 2017 , pages 91-103 DOI: https://doi.org/10.12989/sss.2017.19.1.091 |
|
|
|
Detecting width-wise partial delamination in the composite beam using generalized fractal dimension |
||
S. Keshava Kumar, Ranjan Ganguli and Dineshkumar Harursampath
|
||
| Abstract | ||
| Generalized fractal dimension is used to detect the presence of partial delamination in a composite laminated beam. The effect of boundary conditions and location of delamination on the fractal dimension curve is studied. Appropriability of higher mode shape data for detection of delamination in the beam is evaluated. It is shown that fractal dimension measure can be used to detect the presence of partial delamination in composite beams. It is found that the torsional mode shape is well suited for delamination detection in beams. First natural frequency of delaminated beam is found to be higher than the healthy beam for certain small and partial width delaminations and some boundary conditions. An explanation towards this counter intuitive phenomenon is provided. | ||
| Key Words | ||
| partial delamination; finite elements; frequency shift; fractal dimension; damage detection | ||
| Address | ||
| S. Keshava Kumar, Ranjan Ganguli and Dineshkumar Harursampath: Department of Aerospace Engineering, Indian Institute of Science Bangalore, India | ||