Browsing by Author "Eroglu, Fatih"

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Effect of ambient temperature on the flexural behavior of 3D printed composite beams
(Soc. for the Advancement of Material and Process Engineering, 2018) Yıldırım, Afşin Talha; Eroglu, Fatih; Yesilyurt, Ogulcan; Albayrak, Kubilay; Sas, Hatice S.; Ciftci, Cihan; 0000-0001-9199-6437; AGÜ, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü; Yıldırım, Afşin Talha; Eroglu, Fatih; Yesilyurt, Ogulcan; Albayrak, Kubilay; Ciftci, Cihan
Adaptation of the additive manufacturing technology with 3D printers may lead to a new track in the manufacturing of composite materials. This additive manufacturing technology aims to mitigate manufacturing challenges and related design limitations of traditional composite manufacturing methods. The implementation of 3D printing of composite materials has the potential of decreasing the material cost by developing scientific methodologies to understand and optimize this printing process. This study focuses on understanding the flexural behavior of 3D printed composite beam elements and providing material data of both matrix and reinforcement components of composite materials. In this study, the flexural performance at different thermal conditions is experimentally investigated. This investigation involves the effect of the matrix material with and without short-fiber reinforcements for a specified fiber placement in the beam and fiber filaments placement in compression and tension sides of the composite beam elements along with the ambient temperature change.
Investigation of compressive performance of 3D printed carbon fiber reinforced plastics
(Soc. for the Advancement of Material and Process Engineering, 2018) Eroglu, Fatih; Yildirim, Afsin Talha; Yesilyurt, Ogulcan; Sas, Hatice S.; Ciftci, Cihan; 0000-0001-9199-6437; AGÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümü; Eroglu, Fatih; Yildirim, Afsin Talha; Yesilyurt, Ogulcan; Ciftci, Cihan
The compressive performance of Carbon Fiber Reinforced Plastics (CFRP) is an extensive research area of crashworthy structures due to high Specific Energy Absorption (SEA) rates. However, the traditional composite manufacturing techniques are limiting the implementation of CFRP in crash components of automobile industry. These limitations can be minimized with 3D printing technology, which can be replaced with the traditional composite manufacturing techniques by providing flexibility especially in terms of geometric complexities. In this study, the compressive performance of 3D printed CFRP samples with square and circular cross-sections are examined with different thickness and fiber volume fraction values. SEA rates obtained from axial compressive tests are compared and compressive performance of 3D printed samples is optimized in terms of crashworthiness.