About this Abstract |
Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Presentation Title |
Analysis of Power, Vibration, and Feed Force Signals During Composite Drilling for Delamination Phenomenon Identification |
Author(s) |
Marcel Yuzo Kondo, Marcos Valerio Ribeiro, Manoel Cleber de Sampaio Alves, Emanuele Schneider Callisaya, Edson Cocchieri Botelho, Michelle Leali Costa |
On-Site Speaker (Planned) |
Marcos Valerio Ribeiro |
Abstract Scope |
A critical stage for the application and assembly of parts made of carbon fiber-reinforced polymer (CFRP) is the drilling process. Proper care during the drilling process is essential to ensure the integrity of composite layers. Failure to take necessary precautions can lead to delamination, compromising the structural strength of the material being drilled and reducing elements' fatigue life. This phenomenon is called delamination. It is estimated that 60% of parts rejected in quality inspections are caused by delamination of composites in the aerospace industry. Monitoring drilling processes can be a solution to the problems of delamination occurrence. Observing and tracking signals during material removal with a drill have great potential to be explored to avoid the induction of interlaminar fractures in composite parts. This work evaluated the dynamic behavior of machining power, vibration, and feed force signals while drilling a thermoplastic polymer composite reinforced with carbon fiber. Through an experimental design, the influence of machining factors cutting speed and feed on the monitored signals was evaluated. Three levels were assessed for each factor, with cutting speeds of 35.70, 83.27, and 131.04 m/min and feeds of 0.067, 0.131, and 0.195 mm/rev. Then, the delamination factor at the hole entries and exits was obtained, analyzing the influence of cutting speed and feed on the appearance of delamination. The correlations of these signals with delamination values will still be evaluated, and an investigation will be conducted to determine whether these signals can be exploited to control and mitigate delamination occurrence during drilling. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |