Results 131 to 140 of about 2,054,397 (343)

Using Lignin and Spent Coffee Grounds as Bio‐Additives in 3D‐Printable Poly Lactic Acid/Multi‐Walled Carbon Nanotube Composites for Advanced Electronic Applications

Polymer Composites, EarlyView.
Bio‐based additives derived from lignin and spent coffee grounds (SCG) are used to enhance MWCNT dispersion in PLA composites, enabling improved electrical conductivity and reliable in material extruded strain‐gauge sensors. ABSTRACT In this work, three bio‐based additives, lignin, spent coffee grounds (SCG), and oil extracted from SCG (Ox‐SCG) were ...
Silvia Lage‐Rivera, Ana Ares‐Pernas, M. Sonia Dopico‐García, Carlos M. Costa, Nelson Pereira, Senentxu Lanceros‐Mendez, María‐José Abad   +6 more
wiley   +1 more source

Topology optimization of the flat steel shear wall based on the volume constraint and strain energy assumptions under the seismic loading conditions

Scientific Reports
In structural engineering systems, shear walls are two-dimensional vertical elements designed to endure lateral forces acting in-plane, most frequently seismic and wind loads.
Xi Chen, Gongxing Yan, Hasan Hosseinzadeh   +2 more
doaj   +1 more source

Numerical Investigation of the Effects of Flexible Joint Connection Details on the In-Plane Behavior of Reinforced Concrete Frames

Firat University Journal of Experimental and Computational Engineering
Infill walls quickly become damaged under in-plane and out-of-plane effects, losing their effectiveness within the structural system. Therefore, in recent years, researchers have focused on alternative connection details to better understand the effects ...
Taha Yasin Altıok
doaj   +1 more source

Growth and formation of inverse GaP and InP opals [PDF]

, 2003
Opals consist of an ordered array of SiO2 spheres. This leads to a modulation of the refractive index and hence photonic stop bands behaviour over the visible/IR range of the electro-magnetic spectrum.
López, C, Meseguer, FJ, Nolan, MG, Palacios-Lidón, E, Pemble, ME, Rubio, S, Whitehead, DE, Yates, HM   +7 more
core  

Failure Mechanisms of Short Fiber Reinforced Composite Materials Subjected to Dynamic Loading

Polymer Composites, EarlyView.
Failure Mechanisms of Short Fiber Reinforced Composite Materials Subjected to Dynamic Loading. ABSTRACT The mechanical behavior of short carbon fiber reinforced polylactic acid (SCF/PLA) composites fabricated by fused deposition modeling (FDM) is crucial for engineering applications, yet their strain‐rate dependence is not fully understood.
Hui Liu, James P. Dear, Jin Zhou, Yugang Duan, Zhongwei Guan, Wesley J. Cantwell, John P. Dear   +6 more
wiley   +1 more source

Improving the Structure and Foundation Response Under Seismic Loads Considering Wall Packing Effects – Numerical Study

Applications of Modelling and Simulation
During earthquakes structures in active seismic areas are affected by different random ground motions that cause different forces in the structure such as displacement, acceleration, and stresses.
Maher Taha EL-Nemr, Waseim Rajab Azzam, Mohammed Mohammed Abu-Raia, Moataz Ahmed Wahba   +3 more
doaj  

Infill shear walls in precast concrete frames

, 2018
The present work presents a study on structural masonry built inside precast concrete frames dimensioned as part of the system of bracing of buildings, defining this type of element as Infill Shear Wall. Identified the main constructive details of the masonry infill walls that influence the behavior of the precast frame against the horizontal actions ...
Medeiros, Wallison Angelim, Parsekian, Guilherme Aris   +1 more
openaire   +1 more source

Crystallinity, Porosity, and Microstructure of Polyphenylene Sulfide Composite Parts Fabricated by Filament‐Extrusion Additive Manufacturing

Polymer Composites, EarlyView.
High‐performance PPS composites for FFF: formulation and characterization linking microstructure and crystallization to adhesion and mechanical properties. ABSTRACT Polyphenylene sulfide (PPS) was compounded with recycled carbon fibers (rCF) and thermal black (TB) particles, followed by injection molding (IM) and extrusion of the compounded composites ...
Dogan Arslan, Mihaela Mihai, Daniel Therriault, Martin Lévesque   +3 more
wiley   +1 more source

Disconnected Double-Shell Domes: Geometry and Construction [PDF]

صفه, 2016
Disconnected double-Shell domes are a common feature of Persian architecture. These domes consist of two separate shells: the lower shell (ahyaneh) seen as a decorated ceiling from inside; and the prominent outer shell visible from the exterior and ...
Nima Valibeig, Sanaz Rahravi Poudeh, Afrooz Rahimi Ariayi   +2 more
doaj  

Overcoming Challenges in 3D Printing of Polyolefins and Their Composites: A Review on Strategies for Improved Printability and Performance

Polymer Engineering &Science, EarlyView.
This review integrates the molecular fundamentals, key challenges, and mitigation strategies in polyolefin 3D printing, focusing on shrinkage, warpage, and adhesion control. It highlights material design approaches using recycled polyolefins and functional fillers to improve printability, mechanical properties, and sustainability in additive ...
Malik Hassan, Philip McMorran, Marwan Eid, Julia Blair, Amar K. Mohanty, Manjusri Misra   +5 more
wiley   +1 more source