Results 141 to 150 of about 37,849 (278)

CFRP - Confined reinforced concrete elements subjected to cyclic compressive loading [PDF]

, 2007
The effectiveness of discrete and continuous CFRP wrapping arrangements for reinforced concrete (RC) short column subjected to monotonic and cyclic compressive loading is assessed in this work. The experimental program is composed of four series of RC
Barros, Joaquim A. O., Ferreira, Débora R. S. M., Varma, R. K.   +2 more
core  

Loading Mode Dependence of Twin‐Twin Boundary Formation in a Textured Magnesium Alloy

Advanced Materials Interfaces, EarlyView.
The structures of twin‐twin boundaries formed by interactions between twin variants sharing the same or different zone axes in a deformed magnesium alloy are demonstrated. Lattice distortion around complicated interfaces promotes grain refinement in the subsequent thermomechanical process, enhancing the mechanical performance of magnesium alloys ...
Yuzhi Zhu, Shiqiang Wang, Yi Chen, Guanyi Wang, Yinhu Zhao, Zidong Wang, Zhipeng Li, Dewen Hou   +7 more
wiley   +1 more source

Mechanical responses of sandstone exposed to triaxial differential cyclic loading with distinct unloading rates of confining stress: A lab scale investigation

International Journal of Coal Science & Technology
This article investigates the mechanical responses and acoustic emission (AE) characteristics of sandstone under the triaxial differential cyclic loading (DCL) at different unloading rates of confining stress.
Z. Y. Song, W. H. Zhang, Z. Yu, Y. Zhao, M. Zhang, W. G. Dang   +5 more
doaj   +1 more source

Research on the damage evolution law of iron tailing sand based foam concrete under cyclic loading

Case Studies in Construction Materials
In order to investigate the dynamic response of iron tailing sand based foam concrete as a roadbed filler, graded cyclic loading and unloading tests were carried out in this paper to examine its dynamic properties. The hysteresis curve, fatigue strength,
Xiaoli Du, Liping Zhu, Yanyan Li, Haowei Wang, Kai Xu   +4 more
doaj   +1 more source

Modeling the viscoplastic behavior of Inconel 718 at 1200 F [PDF]

A large number of tests, including tensile, creep, fatigue, and creep-fatigue were performed to characterize the mechanical properties of Inconel 718 (a nickel based superalloy) at 1200 F, the operating temperature for turbine blades.
Abdel-Kader, M. S., Eftis, J., Jones, D. L.   +2 more
core   +1 more source

Tunable Sensitivity in PAN/CNF/PEDOT:PSS Nanofiber‐Based Piezocapacitive Sensors

Advanced Materials Interfaces, EarlyView.
This study demonstrates highly tunable, flexible pressure sensors made from a nanofibrous composite of polyacrylonitrile (PAN) and carbon nanofibers (CNF) or poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). By adjusting filler type, concentration, and mat thickness, the sensors achieve large sensitivity improvements, stable ...
Alireza Gholamhoseini, Sheyda Mirjalali, Aisan Nouri, David Payne, Noushin Nasiri   +4 more
wiley   +1 more source

Experimental study on stress of large-section loess tunnel lining structure under cyclic loading and unloading

Yantu gongcheng xuebao
Surface cracks have a high propensity to emerge in shallowly buried large-section loess tunnels. The lining structure endures repeated loading and unloading actions due to periodic infiltration of seasonal rainfall or agricultural irrigation, thereby ...
HONG Qiuyang1, 3 , LAI Hongpeng2, ZHOU Yang2
doaj   +1 more source

Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications

Advanced Materials Technologies, EarlyView.
A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley   +1 more source

Theoretical and numerical investigation on internal instability phenomena in composite materials [PDF]

, 2004
Instability phenomena occurring in the microstructure of composite materials are investigated. To this aim, a complete description of the mechanical behavior of bi-material interfaces in composite materials requires the definition of both a cohesive ...
Carpinteri, Alberto, Paggi, Marco
core  

Direct Ink Writing 3D Printing of Recyclable and Thermally Stable Vitrimers

Advanced Materials Technologies, EarlyView.
Vitrimers hold great promise in additive manufacturing as defect‐insensitive, repairable, and recyclable feedstocks. A thin‐film additively manufactured process is developed for a high‐performance vitrimer that is difficult to process traditionally.
Louis O. Vaught, Ronald Sellers, Andreas A. Polycarpou   +2 more
wiley   +1 more source