| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Estimating Effective Stiffness of FFF Components based on Layer-by-Layer Raster Orientation obtained from Ultrasonic Waveform Analysis |
| Author(s) |
Atik Amin, David Jack, Trevor Fleck |
| On-Site Speaker (Planned) |
Atik Amin |
| Abstract Scope |
The quality of the internal raster path of an AM product is an important factor that affects the performance of these components. To address this issue, this research proposes an automated approach using a novel ultrasonic testing method to extract the layer-by-layer raster orientation non-destructively of AM components. The proposed method uses the 2D Fast Fourier Transformation on gated ultrasonic waveforms to extract the raster path of each individual deposited layer. The results demonstrate that the approach can determine the raster orientation, with an error margin of 1°~2° for an 18 layer sample fabricated from nylon resin system, and for the PCTG and the PET-CF system the first 9-10 layers. The extracted layer information is then used to predict the effective stiffness of an ASTM D638 dog bone utilizing classical laminate theory and the results for each of the material systems are compared to physical testing of the fabricated specimen. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |