Results 61 to 70 of about 120,407 (285)

Low velocity impact performance of fiber-reinforced polymer impregnated with shear thickening fluid

Polymer Testing, 2021
In this study, the mechanical performance of fiber-reinforced polymer (FRP) impregnated with shear thickening fluid (STF) under low-velocity impact was investigated.
Li Sun, Minghai Wei, Jie Zhu
doaj   +1 more source

Optional Soil Infiltration Protocol [PDF]

, 2003
The purpose of this resource is to determine the rate at which water soaks into the ground. Students place two cans into the soil and add water to them to a depth of at least 5 cm.
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

Reinventing College Physics for Biologists: Explicating an epistemological curriculum

, 2008
The University of Maryland Physics Education Research Group (UMd-PERG) carried out a five-year research project to rethink, observe, and reform introductory algebra-based (college) physics.
David Hammer, Edward F. Redish, Giroux H. A., Goertzen R. M., Hammer D., Hatano G., Mazur E., McCloskey Michael, McDermott L., Redish E. F., Redish E. F., Schachter D., Schoenfeld A. H., Strike K. A., Varmus H., Wittmann M.   +15 more
core   +1 more source

Evaluation of measurement uncertainty of drop hammer impact test for composite materials

Journal of Physics: Conference Series
Abstract Future aircraft structures are usually dominated by composites, and one of the key defects and forms of damage to composite structures is the impact damage caused by low-energy (especially low-speed) foreign matter. This kind of low-energy impact test is usually completed by the drop hammer testing machine, so accurately ...
Li Lei, Zhang Yao
openaire   +1 more source

An Atomic‐Level Bimetallic MOF Platform Overcoming the Stability‐Performance Tradeoff for Laser Propulsion

Advanced Materials, EarlyView.
This work introduces an atomic‐level engineered bimetallic MOF Platform that resolves the inherent trade‐off between environmental stability and propulsion efficiency. By integrating robust Fe‐O bonds for hydrolysis resistance and enabling d‐orbital charge transfer (Fe3+→Cu2+) for enhanced photothermal conversion, the design achieves a highly durable ...
Senlin Rao, Gang Tang, Shizhuo Zhang, Gary J. Cheng   +3 more
wiley   +1 more source

Fracture dynamics analysis and experimental study on graded crushing process

矿业科学学报, 2019
The rotational speed of the toothed rolls crusher is a key parameter for controlling the particle size of the crushed product.At present, the determination of the rotational speed is in a qualitative stage.There is no corresponding theory to guide.Based ...
Zhou Qiang, Pan Yongtai, Guo Qing, Zhu Changyong, Wei Yinghua, Yang Cheng, Shen Ning   +6 more
doaj   +1 more source

Analysis of Injectivity Decline in some Deepwater Water Injectors [PDF]

, 2013
Imperial Users ...
Dambani, Samuel, Dambani, Samuel
core  

Lattice Structures for Bone Replacement: The Intersection of Bone Biomechanics, Lattice Design, and Additive Manufacturing

Advanced Materials Technologies, EarlyView.
This review outlines how understanding bone's biology, hierarchical architecture, and mechanical anisotropy informs the design of lattice structures that replicate bone morphology and mechanical behavior. Additive manufacturing enables the fabrication of orthopedic implants that incorporate such structures using a range of engineering materials ...
Stylianos Kechagias, Maxwell J. Munford, Frederik C.H. Masure, Richard J. van Arkel, Reece N Oosterbeek   +4 more
wiley   +1 more source

Simulation and Experimental Study of Strain Distribution in Composite Materials Considering Impact Velocity and Impact Location

Aerospace
Fiber-reinforced composite panels have become the primary load-bearing structures in aircraft due to their exceptional stiffness, specific strength, and mechanical properties.
Aibing Qian, Hao Dong, Kang Cao, Yongjie Zhang   +3 more
doaj   +1 more source

Feasibility of UHPC shields in spent fuel vertical concrete cask to resist accidental drop impact

Nuclear Engineering and Technology, 2022
Ultra-high performance concrete (UHPC) has been widely utilized in military and civil protective structures to resist intensive loadings attributed to its excellent properties, e.g., high tensile/compressive strength, high dynamic toughness and impact ...
P.C. Jia, H. Wu, L.L. Ma, Q. Peng
doaj   +1 more source