
Production and characterization of composite-based friction materials for safety clutches in aviation applications
Başlık:
Production and characterization of composite-based friction materials for safety clutches in aviation applications
Yazar:
Karabulut, Orhan, author.
Yazar Ek Girişi:
Fiziksel Tanımlama:
x, 80 leaves: illustrarions, charts; 29 cm + 1 computer laser optical disc.
Özet:
Clutch systems are one of the most important equipment in terms of controlling the speed of the moving vehicle. This study investigates aircraft clutch systems, focusing on the chemical and mechanical properties, production methods, and usage conditions of facing materials. Material characterization of a commercial composite-based aircraft brake pad (Trimat MN2221) was performed to understand pad compositions, using microstructural, phase (XRD), chemical (XRF), bond structure (FTIR), and thermal (TGA) analyses. New pad formulations were developed, and safety clutch pads were produced under constant conditions by varying raw materials using composite pad production methods, including raw material mixing, hot pressing, and baking. Experiments with different additives and mixture ratios were conducted, and the differences in pad properties were analyzed. This research aims to investigate the effects of varying the amounts of phenolic resin, quartz, alumina, glass fiber, and graphite in a predetermined clutch friction material composite matrix on the friction force and wear resistance of the samples. Three different clutch pad samples were produced with varying proportions of alumina and quartz, and their friction properties were tested. Similar experiments were conducted with different amounts of phenolic resin, glass fiber, and graphite. Physical properties were evaluated by measuring density, surface roughness, and hardness. Density was calculated based on mass-volume, and hardness was measured using a SHORE D device. Results showed alumina enhances friction materials and clutch performance, while quartz improves the friction coefficient. The study identified the most suitable formulation and optimal production parameters for clutch performance.
Konu Başlığı:
Tüzel Kişi Ek Girişi:
Tek Biçim Eser Adı:
Thesis (Master)-- İzmir Institute of Technology: Materials Science and Engineering.
İzmir Institute of Technology: Materials Science and Engineering. (Master).
Elektronik Erişim:
Access to Electronic Versiyon.