Results 151 to 160 of about 2,243,898 (289)

Mechanical Properties and Stress Analysis of Natural Fiber Reinforced Polymer Composite Spur Gear

open access: yesЖурнал інженерних наук
This research study investigates the mechanical properties of polymer composites reinforced with natural fibers, specifically Palmyra palm leaf stalk fiber (PPLSF) and Palmyra palm primary leaf stalk fiber (PPFLSF). Tensile, flexural, and impact strength
M. Jayaraj   +4 more
doaj   +1 more source

Polymer Alloy Gears. Polymer Alloy Gears Consisting of Polyacetal and Polyurethane.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1995
Naohisa Tsukamoto   +2 more
openaire   +2 more sources

Relation of Bulk‐to‐Shear Loss Factors in Viscoelastic Auxetic Metamaterials

open access: yesphysica status solidi (b), EarlyView.
This article examines the dynamic behavior of isotropic auxetic viscoelastic materials, highlighting how negative Poisson's ratios affect energy dissipation, damping, and the interplay between bulk and shear moduli. By extending established viscoelastic theories to the auxetic range, it defines bound limits and underscores how dynamic Poisson's ratio ...
Simon Preston   +2 more
wiley   +1 more source

Hydraulic In Vitro Characterization of MR‐Conditional Blood Pumps

open access: yesArtificial Organs, EarlyView.
Cardiac surgery in neonates requires close placement of cardiopulmonary bypass machines due to limited blood volume, complicating MR compatibility. This study introduces three MR‐conditional blood pump prototypes. None interfered with MRI imaging, though RF‐related sensor effects remain untested.
Dominik T. Schulte   +6 more
wiley   +1 more source

Study on the meshing surface temperature field of polymer gears under different operating conditions

open access: yesJixie chuandong
ObjectivePolymer gears are widely used due to their lightweight, corrosion resistance, and noise reduction properties. However, their thermal behavior during meshing under complex operating conditions remains insufficiently understood. This study aims to
LI Qianmeng, XU Hualong, LI Donglong
doaj  

A Portable Multi‐Parameter Fluid Monitoring Unit for Real‐Time Measurements During Well Development and Geothermal Operations

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Monitoring of fluid parameters during well development, groundwater production, or geothermal operation is essential for the understanding of subsurface and well processes. We developed FluMoMax, a portable fluid monitoring unit, that can measure several physicochemical parameters in real‐time, to monitor fluid characteristics and to enable ...
Lioba Virchow   +5 more
wiley   +1 more source

Analysis and Simulation of Transient Contact Stress and Temperature Field of Polymer Gear

open access: yesJixie chuandong, 2018
The contact pressure of the tooth surface of the polymer gear is analyzed by using the method of Hertz contact theory and finite element contact analysis. The calculation method of the tooth surface friction coefficient and the friction heat flux density
Wang Zhen   +3 more
doaj  

Analytical Green Star Area for Sample Preparation (AGSA‐Prep) as a Comprehensive and Practice‐Oriented Metric

open access: yesAnalytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT Sample preparation is a critical, yet often environmentally burdensome, step in analytical chemistry. While Green Sample Preparation principles aim to mitigate this impact, existing assessment tools such as AGREEprep offer room for improvement in the assessment process.
Fotouh R. Mansour   +3 more
wiley   +1 more source

The Occurrence of Microplastic Ingestion in Commercial Marine Fish in Miri, Sarawak, Malaysia

open access: yesEnvironmental Quality Management, Volume 35, Issue 4, Summer 2026.
ABSTRACT Microplastics are polymer‐based particle compositions of various toxic chemicals with size less than 5 mm. Due to their small size, microplastics can be ingested and accumulate in body tissues of organisms. This raises concerns about their toxicity being transferred to humans via food consumption.
Sze Che Lee, Rubiyatno, Tony Hadibarata
wiley   +1 more source

Reduction of Noise of Spindle Units of Metal Cutting Machines by Coating Application on the Surface Bearing Structures and Kinematic Links

open access: yesМеханика машин, механизмов и материалов, 2018
The results of experimental studies of the damping capacity of metal and polymer coatings are presented formed by methods of gas-flame spraying, deformation cladding with a flexible tool and galvanic deposition.
Valeriy K. Sheleh   +3 more
doaj  

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