Results 61 to 70 of about 1,835,677 (289)
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
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, 2015 The aim of this study is to find out how designed Geometry Teaching Lesson affects candidate teachers’ Van Hiele Geometric Thinking Levels. For that purpose, 14 weeks long study was performed with 44 candidate teachers who were university students in ...
GÜVEN, BÜLENT, KALELİ YILMAZ, GÜL
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Geomaniguras: A Manipulative Resource for Supporting Conceptual Understanding in Geometry Education
Education SciencesManipulative materials are widely considered valuable resources in geometry education because they may support visualization, spatial reasoning, and conceptual understanding when implemented within appropriate instructional contexts.
José A. Núñez-López +2 more
doaj +1 more source
تطوير وحدة التحويلات الهندسية فى ضوء الإتجاهات المعاصرة لتنمية التفکير الهندسى لدى تلاميذ المرحلة الإعدادي [PDF]
مجلة البحث العلمي في التربية, 2016 سعى هذا البحث إلى تطوير وحدة التحويلات الهندسية فى ضوء الإتجاهات المعاصرة لتنمية التفکير الهندسى لدى تلاميذ المرحلة الإعدادية , وتکونت عينة البحث من (40) تلميذه من تلاميذ الصف الأول الإعدادى – بمحافظة البحيرة , وقد تم بناء " وحدة للتحويلات الهندسية " فى
شيماء سالم عبدالمقصود سالم الطيب
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Optimization of geometric thinking through interactive worksheets: a scoping review
Geometric thinking is a crucial aspect of mathematics education, particularly in developing visualization skills, understanding geometric concepts, and problem-solving abilities. This study aims to explore the role of interactive worksheets (Lembar Kerja
Oktaviyanthi, Rina, Kadun, Selvi
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Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source
Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
wiley +1 more source
, 2022 Geometry is an important part of the mathematics curriculum. In the late 1950s, Pierre van Hiele and Dina van Hiele-Geldof developed a theory of learning geometry. Theory helps determine students' geometric thinking levels, design appropriate instruction
Sert- Çelik, Hülya +1 more
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