Author
E. Bayraktar
Bio: E. Bayraktar is an academic researcher from Conservatoire national des arts et métiers. The author has contributed to research in topics: Materials science & Tensile testing. The author has an hindex of 10, co-authored 15 publications receiving 408 citations.
Papers
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TL;DR: In this article, the deformation behavior of high manganese austenitic Hadfield steel sheet samples was studied under uniaxial tensile test conditions and the effect of temperature on the tensile behaviour and fracture appearance was also studied using the scanning and transmission electron microscopes.
134 citations
TL;DR: In this article, the behavior of thin welds of different grades of steels in dynamic loading conditions such as those experienced in automotive crash test is investigated. And the evaluation of resistance to dynamic failure will be studied through impact tensile test (ITT).
45 citations
TL;DR: In this paper, the impact tensile test (ITT) was used to examine the mechanical and metallurgical behavior of the weld bead, heat affected zone (HAZ) and base metal for thin sheet steels used in the car industry.
43 citations
TL;DR: In this article, an advanced, high-speed, and high-sensitivity infrared imaging system was used to measure the temperature changes during ultrasonic fatigue test at various load levels caused by internal damping due to a very high frequency cycling.
43 citations
TL;DR: In this article, a comparative study on the new developments in non-destructive controls of composite materials and applications in the manufacturing engineering and also reviews essentially the performance and advantages of X-rays computed tomography (XR-CT) medical scanner about its usage at multiple scales (macro, micro, meso and nano), the method and also the terminology.
41 citations
Cited by
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TL;DR: A review of the relations between microstructure and mechanical properties is presented in this article focusing on plasticity mechanisms, strain-hardening, yield stress, texture, fracture and fatigue.
Abstract: A significant increase in the research activity dedicated to high manganese TWIP steels has occurred during the past five years, motivated by the breakthrough combination of strength and ductility possessed by these alloys. Here a review of the relations between microstructure and mechanical properties is presented focusing on plasticity mechanisms, strain-hardening, yield stress, texture, fracture and fatigue. This summarized knowledge explains why TWIP steel metallurgy is currently a topic of great practical interest and fundamental importance. Finally, this publication indicates some of the main avenues for future investigations required in order to sustain the quality and the dynamism in this field.
1,114 citations
TL;DR: In this article, a review about non-destructive testing (NDT) methods for the evaluation of composites is provided, considering the capabilities of most common methods in composite NDT applications such as Visual Testing (VT or VI), Ultrasonic Testing (UT), Thermography, Radiographic Testing (RT), Electromagnetic Testing (ET), Acoustic Emission (AE), and Shearography Testing with respect to advantages and disadvantages of these methods.
Abstract: A review provided about non-destructive testing (NDT) methods for the evaluation of composites. The review considers the capabilities of most common methods in composite NDT applications such as Visual Testing (VT or VI), Ultrasonic Testing (UT), Thermography, Radiographic Testing (RT), Electromagnetic Testing (ET), Acoustic Emission (AE), and Shearography Testing with respect to advantages and disadvantages of these methods. Then, methods categorized based on their intrinsic characteristics and their applications.
499 citations
TL;DR: In this article, the thermo-mechanical properties of low stacking fault energy austenitic Fe18Mn0.6C steel exhibiting twinning-induced plasticity were investigated using infrared thermography.
Abstract: The thermo-mechanical properties of low stacking fault energy austenitic Fe18Mn0.6C steel exhibiting twinning-induced plasticity were investigated during uniaxial tensile deformation using infrared thermography. Over a wide strain range, the plastic deformation was by the movement of very few well-defined localized deformation bands. The formation and propagation of Portevin–LeChatelier (PLC) bands lead to type A and type B serrated stress–strain curves, exhibiting a negative strain rate sensitivity. The PLC band properties were analyzed in detail: strain, strain rate and mobile dislocation density within the bands were determined. The microstructures of the un-deformed and deformed Fe18Mn0.6C TWIP steel were studied by transmission electron microscopy. The possible dynamic strain aging processes causing the localized deformation are reviewed.
261 citations
TL;DR: In this paper, the displacement adjustment method (DA) is used to adjust the trial die design until the target part shape is achieved, hence the term "displacement adjustment method" has been applied.
253 citations
TL;DR: In this article, the authors extend the notion of phase transformations to periodic cellular materials by introducing materials whose unit cells have multiple stable configurations, each stable configuration corresponds to a stable phase, and transitions between these phases are regarded as phase transformations of the cellular material.
230 citations