Results 51 to 60 of about 68,956 (308)

Experimental Characterization of Mycelium‐Based Composites Under Multiple Loading Conditions

Advanced Engineering Materials, EarlyView.
This study examines the mechanical response of mycelium‐based composites under compression, shear, and tension using mechanical testing and imaging methods. The comparison between unpressed and hot‐pressed specimens shows that hot pressing is associated with higher compression and shear stiffnesses.
Shaghayegh Elahi, Kimiya Tajik, Harvey Shaw, Matti Isakov, Sami Pajunen, Lauri Rautkari   +5 more
wiley   +1 more source

Experimental Investigation on High Strength Concrete Columns Reinforced with B500 [PDF]

SVU-International Journal of Engineering Sciences and Applications
Concrete is a common material in construction, but it is weak in tension, often destroyed with cracks due to plastic and drying shrinkage. It was possible to use the introduction of separate short fibers into concrete to counter and prevent the spread ...
lamiaa sadek, hazem abdelatif
doaj   +1 more source

Influence of the soft reduction process on the sensitivity of the inner crack in heavy rail steel bloom

工程科学学报, 2021
Continuous casting technology has greatly improved production efficiency; however, in the continuous casting process of heavy rail steel, problems of center segregation, center porosity, and shrinkage cavity of the bloom occur, which notably affect the ...
Hai-tao MA, Jiong-ming ZHANG, Yan-bin YIN   +2 more
doaj   +1 more source

Compatibility of Methacrylate Based Resins Controls Interfacial Failure and Toughness in 3D‐Printed Multimaterial Composites

Advanced Engineering Materials, EarlyView.
This work shows that the mechanical performance of multimaterial digital light processing (DLP) printed thermoset composites is governed by resin compatibility and interfacial design rather than spatial patterning alone. Brittle and ductile resin combinations produced premature interfacial failure, while graded interfaces and mechanically compatible ...
Ahmed M. H. Ibrahim, Li Meng, Ahmad R. Najafi, Nicolas J. Alvarez   +3 more
wiley   +1 more source

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky, Márk Sárközi, Ibolya Zsoldos, Zoltán Weltsch   +3 more
wiley   +1 more source

Influence of Textile Fiber in the Mechanical Characteristic of Hybrid Fiber Reinforced Concrete

Journal of Natural Fibers, 2022
The early growth of micro-cracks develops due to plastic and dry shrinkage weakens conventional concrete’s mechanical properties; which can be improved by introducing discrete and randomly oriented natural and synthetic textile fibers, like sisal, banana,
Sagar Sarangi, Birendra Kumar Singh
doaj   +1 more source

On the mechanism of plastic shrinkage cracking in fresh cementitious materials [PDF]

Cement and Concrete Research, 2019
Abstract In this study, a continuum poromechanics approach is presented to model the plastic shrinkage cracking of fresh cementitious materials. The boundary conditions are according to the modified ASTM C1579–13 standard for mortars. The restrained deformations are linked to the restraint stresses according to the Cauchy-Navier equations of ...
Sadegh Ghourchian, Mateusz Wyrzykowski, Mathieu Plamondon, Pietro Lura   +3 more
openaire   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

Advanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu, Qihang Lv, Lubin Liu, Zhezhe Zhou, Chentao Yan, Ao Qin, Jianting Ma, Shuhui Liang, Yue Xu, Min Hong, Bin Li, Pingan Song   +11 more
wiley   +1 more source

Preventing Plastic-Shrinkage Cracks in GFRP-Bar Reinforced Concrete Using Fibers

International Journal of Concrete Structures and Materials
Large horizontal concrete elements are susceptible to premature cracking due to environmental effects. The ASTM C1579 bottom-restraining technique cannot reliably induce controlled cracking.
Abidemi Bashiru Folorunsho, Topendra Oli, Changheon Lee, Seungwon Kim, Cheolwoo Park   +4 more
doaj   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source