| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Polymeric-based Materials: Challenges and Potentials
|
| Presentation Title |
Characterization of Additive Manufactured Carbon Fiber Composite Using an Original Fracture Toughness Measurement Approach |
| Author(s) |
Allison Rea, Constantin Virgil Solomon |
| On-Site Speaker (Planned) |
Allison Rea |
| Abstract Scope |
Single-edge-notch bending (SENB) specimens made of Onix (composite material of nylon and chopped carbon fiber) were manufactured using fused filament fabrication (FFF) technique. In order to determine the fracture toughness, the ASTM D5045 recommends the measurement of the crack-tip opening displacement (CTOD) using a specialized gauge. This research is proposing an original method of measuring the CTOD by adapting a common strain gauge extensometer, used for elongation measurement in the tensile testing, to the fracture toughness measurement process. In order to attach the strain gauge extensometer to the SENB specimens, specialized extenders were designed and additively manufactured via FFF technique from polylactic acid (PLA). Kinematic analysis of the extenders’ movement during the fracture toughness measurement process was performed in order to determine the CTOD. The paper will present the results on investigating the fracture toughness of carbon fiber composite using the proposed novel method of measuring the crack-tip opening displacement. |