Gülşen Akın Evingür

Piri Reis University Turkey

Gülşen Akın Evingür graduated from the Physics Department at the Yıldız Technical University (YTU, İstanbul, Turkey) in 1996. She completed her Master's Science in 2002 at the same department. The title of her thesis was "Electrical Properties of Polystyrene". She received her PhD in Physics Engineering from İstanbul Technical University in 2011. The title of the thesis was "Phase Transitions in Composite Gels. She served as an Assistant Professor from 2011 to 2018 and is currently a Professor at Pîrî Reis University in Istanbul, Turkey. She has conducted various studies on composites and their mechanical, optical, electrical, and acoustic properties. She has authored more than 71 SCI articles and 106 conference proceedings. She has written 1 book, edited 5 books, and had 10 chapters published in international books, as well as 4 international and 5 national projects.

4books edited

2chapters authored

Latest work with IntechOpen by Gülşen Akın Evingür

Elastic properties of materials represent a fundamental mechanical characteristic, describing a material's capacity to deform reversibly under stress and regain its original shape once that stress is removed. A comprehensive understanding of these properties is crucial for predicting how materials behave under load and for the effective engineering of reliable structures and components. A material's elastic behavior and properties can be quantitatively ascertained from its stress-strain curve, which graphically depicts its mechanical response to an applied load. This book systematically addresses three key issues in three sections: foundational principles and terminology in section 1, methodologies for testing elasticity in section 2, and the elastic properties of various materials in the last section. The content is further organized into five specialized topics: testing methodologies, theoretical frameworks, material characterization, the role of phase transitions, and surface modification techniques, all supported by practical applications. Specific examples of elastic and viscoelastic properties are provided for materials such as single-mode optical fibers, wood, wood-plastic composites, noble magnetic alloys, ferroelectric materials, and shape memory polymers. This book is a valuable resource for scientists, postgraduate students, and advanced undergraduates in both the basic sciences and engineering disciplines, offering essential practical skills and analytical approaches for studying material properties.

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Elastic Properties of Materials

Edited by Gülşen Akın Evingür

Books edited

By Gülşen Akın Evingür and Önder Pekcan

Three-dimensional networks can be hydrophilic and/or hygroscopic. Optical, mechanical, and electrical properties of these materials encompass many fields of technology. Composites of carbon nanotubes (CNTs) in polymeric materials have attracted considerable attention in the research and industrial communities due to their unique optical, mechanical, and electrical properties. CNT polymer nanocomposites possess high stiffness, high strength, and good electrical conductivity at relatively low concentrations of CNT filler. Here, in this chapter, we survey the optical, mechanical, and electrical mechanisms for various polymeric systems. Composite gels and films were prepared with various molar percentages of multiwalled carbon nanotubes (MWCNTs). The optical, mechanical, and electrical behaviors of various composite gels doped by MWCNT are also discussed in the each sections of the chapter. The optical behaviors of the composites were performed by the UV-Vis spectroscopy and fluorescence spectroscopy in the first part of the chapter. On the other hand, compressive testing technique and rheological measurements were employed to determine the variations of mechanical properties of the composites in the second part of the chapter. Lastly, we review the electrical properties of the composites improved significantly by addition of MWCNTs researches.

Part of the book: Carbon Nanotubes

Introductory Chapter: Elastic Properties of Materials

By Gülşen Akın Evingür and Önder Pekcan

Part of the book: Elastic Properties of Materials