Akademik Veri Yönetim Sistemi
International Journal on Engineering Technologies and Informatics, cilt.2, ss.53-60, 2021 (Hakemli Dergi)
Aerospace industry requires engineering materials with significant mechanical strength, low cost, easy to recycle, easy to
process, and high chemical resistance. Thermoplastic composites are considered as new generation aerospace structural materials due
to their superior characteristics. In this study, one of the most common methods used in manufacturing of thermoplastic composite
parts from unidirectional (UD) pre-consolidated prepreg (blank), press forming process is investigated and crack behavior of the
samples is examined. The forming process is utilized, and consolidated blanks of UD CF/PEEK and GF/PP composite materials are
shaped by pressing, and mechanical tests are performed. Micro defects on the samples are monitored by microscopic examination and
scanning electron microscopy (SEM) analysis. Results show that when the temperatures of CF/PEEK and GF/PP blank are increased by
preheating, the formability of both composites are enhanced. Final outcomes reveal that both CF/PEEK and GF/PP composite materials
can easily be used for possible aircraft structures. Additionally, CF/PEEK is found to be appropriate not only secondary structures but
also for primary structures.