Results 71 to 80 of about 47,081 (255)

Numerical and experimental study of the optimal specimen geometry for direct tension strength tests in high tensile strength fiber reinforced concrete

Scientific Reports
The accurate determination of the tensile strength of concrete is a topic of growing interest, especially driven by the new ultra-high tensile strength fiber-reinforced concretes.
Miguel A. Vicente, Álvaro Mena-Alonso, Dorys C. González, Gonzalo Ruiz, Héctor Cifuentes, Carlos Leiva, Rena Yu, Jesús Mínguez   +7 more
doaj   +1 more source

Damage Evolution Characteristics of Rock Salt under Different Stress Conditions

Advances in Civil Engineering, 2019
Understanding the damage evolution characteristics of rock material is essential to the long-term stability and safety analysis of the underground facility.
Chunping Wang, Jianfeng Liu, Lu Wang
doaj   +1 more source

Tensile Strength Evaluation by Brazilian and Direct Tensile Tests: Experimental Insights and Influencing Factors

Rock Mechanics and Rock Engineering
Abstract This empirical analysis focuses on evaluating the relationship between the results obtained from the Direct Tensile Test (DTT) and the Brazilian Test (BT). Through both a review of existing literature and original laboratory experiments, the study explores how factors such as uniaxial compressive strength (UCS) and rock ...
Santos de Alencar, Ana Teresa, Muñiz Menéndez, Mauro, Galindo Aires, Rubén Ángel   +2 more
openaire   +2 more sources

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Shape factor of irregular internal cracks in rock-like materials

Yantu gongcheng xuebao, 2018
The initiation, propagation and coalescence of internal cracks will lead to the failure of rock mass. To study the fracture characteristics of the internal cracks in brittle rock mass, the validity and reliability of a cylinder FEM numerical model ...
DAI Feng , ZHU Wan-cheng , LI Shao-hua , YU Yong-jun
doaj   +1 more source

Modular Critical Element Recycling Platform Using a Nanoporous Additively Manufactured Gyroid

Advanced Engineering Materials, EarlyView.
A modular recycling platform integrates 3D‐printed nanoporous gyroid structures to enable efficient critical element recovery. This system utilizes a hierarchical architecture, combining macroscopic channels with polymerization‐induced nanoscale porosity. By systematically tuning structural wall thickness and resin formulation, the platform achieves an
Xiangyu Gao, Keldy Mason, Mert Gülçür, Rachel Paddock‐Lamb, Prince Alvin Fofanah, Zachariah A. Page, Michael Cullinan   +6 more
wiley   +1 more source

Interlayer Bond Strength of 3D Printed Concrete Members with Ultra High Performance Concrete (UHPC) Mix

Buildings
In structures manufactured using 3D concrete printing, cracks can easily propagate along the interface between printed layers. Therefore, it was necessary to determine the interlayer bond strength.
Yoon Jung Lee, Sang-Hoon Lee, Jae Hyun Kim, Hoseong Jeong, Sun-Jin Han, Kang Su Kim   +5 more
doaj   +1 more source

Numerical Simulation of Tensile Failure of Concrete in Direct, Flexural, Double Punch Tensile and Ring Tests

Periodica Polytechnica Civil Engineering, 2016
The present study considers the tensile strength of concrete samples in direct, flexural, double punch and ring tests using both of the experimental tests and numerical simulation (particle flow code 2D). It determined that which one of indirect tensile strength is close to direct tensile strength.
Vahab Sarfarazi, Wulf Schubert
openaire   +2 more sources

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Rheological, mechanical, and microstructural properties of engineered geopolymer composite (EGC) made with ground granulated blast furnace slag (GGBFS) and fly ash

Journal of Materials Research and Technology
Ground granulated blast-furnace slag (GGBFS) and fly ash (FA) were used as precursors to prepare Engineered Geopolymer Composite (EGC) based on the binary binder system, and the effects of GGBFS content and curing time on the mechanical properties as ...
Xinhua Cai, Jinjing Yin, Xian Xu, Duo Zhang, Yamin Wang   +4 more
doaj   +1 more source