Results 91 to 100 of about 2,113,508 (290)

Optimization of Peripheral Finned-Tube Evaporators Using Entropy Generation Minimization [PDF]

open access: yes, 2012
The peripheral finned-tube (PFT) is a new geometry for enhanced air-side heat transfer under moisture condensate blockage (evaporators). It consists of individual hexagonal (peripheral) fin arrangements with radial fins whose bases are attached to the ...
Barbosa Jr., Jader   +3 more
core   +1 more source

RESEARCH ON THE ENERGY ABSORPTION CHARACTERISTICS OF EXPANSION TUBE ENERGY ABSORBING ELEMENTS FOR RAIL VEHICLES

open access: yesJixie qiangdu, 2019
In this paper, the expansion tube type energy absorbing element was taken as the research object, and 9 samples were tested by automatic electro-hydraulic servo press and large drop hammer impact tester.
HE ShiZhong, HUANG Ke
doaj  

Functionally graded thick-walled tubes analysis by numerical methods

open access: yesHeliyon
Functionally graded materials are increasingly used in the practice of engineering design, as is the case with thick-walled tubes. The use of these constructive elements requires a calculation, which should be as accurate, as accessible and as fast as possible. The present work responds to these requirements.
Vasile Nastasescu, Silvia Marzavan
openaire   +3 more sources

Metal Compound‐Based Non‐Enzymatic Electrochemical Cholesterol Sensors: Emerging Materials and Mechanistic Insights

open access: yesAdvanced Materials Interfaces, EarlyView.
This review discusses recent progress in metal complex‐based, non‐enzymatic electrochemical sensors for cholesterol detection. We examine metal oxides, metal sulfides, and hybrid nanomaterials, highlighting their catalytic mechanisms and material design strategies.
Longfei (Jack) Yin   +6 more
wiley   +1 more source

Free-convection condensation on single horizontal pin-fin tubes [PDF]

open access: yes, 2011
PhDNew experimental data are reported for free-convection condensation of ethylene glycol and R-113 on three-dimensional pin-fin tubes. Effects of pin geometry and tube thermal conductivity (for copper, brass and bronze giving a mean range of 400, 120 ...
Ali, Hafiz-Muhummad
core   +2 more sources

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

ENERGY ABSORPTION CHARACTERISTIC OF BIOMIMETIC BAMBOO THIN⁃WALLED TUBE STRUCTURE FOR CAR CRASH BARRIERS

open access: yesJixie qiangdu
Based on the macroscopic and microscopic structural characteristics of bamboo,two bionic bamboo structures were proposed:a thin⁃walled tube with variable wall thickness with reinforcing joints(Tube⁃a)and a thin⁃walled bamboo⁃like tube with ribs in a ...
ZHANG HaiYan, ZHOU GuoHua
doaj  

Bending-hydraulic forming stainless steel thin-walled tube fittings wall thickness distribution law research

open access: yesInternational Journal of Lightweight Materials and Manufacture
A study was conducted to examine the distribution of wall thickness in stainless steel thin-walled tube fittings during the forming process. The research included simulation and experimental analyses of the bending and hydroforming processes of these ...
Xinlong Zhang   +4 more
doaj   +1 more source

Torsional Stiffness Comparison of Different Tube Cross-Sections of a Formula SAE Car Space Frame

open access: yesMATEC Web of Conferences, 2018
Since torsional loading and the accompanying deformation of the frame and suspension parts can affect the handling and performance of the car, torsional stiffness is generally thought to be a primary determinant of frame performance for a FSAE car ...
Hao Liu Cong   +3 more
doaj   +1 more source

Flexible Pressure Sensor With Co‐Optimized Sensitivity and Linearity Based on Gradient Toroidal Microstructures

open access: yesAdvanced Materials Technologies, EarlyView.
A flexible piezoresistive pressure sensor with gradient toroidal CNT/PDMS microstructures is reported. The hierarchical geometry enables sequential electrode contact, achieving a sensitivity of 256.20 kPa−1 and linear response (R2 = 0.99) over 0–1000 kPa.
Rongmei Wang   +8 more
wiley   +1 more source

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