Results 81 to 90 of about 4,384 (233)

Performance Evaluation of 3D-Printed ABS and Carbon Fiber-reinforced ABS Polymeric Spur Gears

open access: yesBioResources
Acrylonitrile butadiene styrene (ABS) polymer and carbon fiber reinforced acrylonitrile butadiene styrene (CF/ABS) spur gears were 3D-printed using fusion deposition modeling (FDM) with different fillet radii of 0.25, 0.50, and 0.75 mm.
Vigneshwaran Karupaiah   +6 more
doaj   +2 more sources

Partially Biobased Polyurethanes With Reversibly Crosslinkable Furan Units Toward Recyclable Thermosetting Textile Fibres

open access: yesChemistry – A European Journal, EarlyView.
A molecular design strategy combines lignin‐derived aromatic units, sugar‐derived furan groups, and flexible glycol segments to create wet‐spinnable polyurethanes. Thermally reversible Diels–Alder crosslinking chemistry enables formation of crosslinked thermosetting fibers, repeated de‐crosslinking/re‐crosslinking cycles, and tunable fiber properties ...
Rafael N. L. Menezes   +7 more
wiley   +1 more source

Thermal-mechanical Coupling Model of Polymer Gear and Numerical Analysis of Transient Temperature Field at Its Contact Interface

open access: yesJixie chuandong, 2019
Based on the thermodynamics and dynamics analysis of polymer composite gear meshing transmission process, the coupling thermal-mechanical model is established, the changing rule of the gear body temperature rise and the transient temperature of friction ...
Tianfeng Miao   +3 more
doaj  

Automated Process Optimization in a Novel Triple Shaft Mixer with Adaptive Mixing Modes

open access: yesChemie Ingenieur Technik, EarlyView.
A novel multi‐purpose mixer with adjustable blade angle and a coaxial stirrer is developed, providing three degrees of freedom. An optimization strategy is integrated to autonomously identify optimal operating conditions through automated tests. The current draw of the main stirrer serves as the optimization criterion, while stirrer speeds, directions,
B. Schwarz, H. Kniele, J. A. Lindner
wiley   +1 more source

Evaluation of Pervaporation and Nanofiltration Membranes for Water Recovery From Thermo‐Responsive Draw Solution

open access: yesChemie Ingenieur Technik, EarlyView.
Integrating thermo‐responsive draw solutions with suitable water‐recovery technologies could enable more efficient hybrid desalination. This study compares pervaporation and nanofiltration, revealing key trade‐offs between water productivity and polymer retention and providing guidance for future FO‐based brine treatment systems.
Nadin Al‐Jariry   +9 more
wiley   +1 more source

Service Life and Failure Analysis of Nylon, Polycarbonate, and IGUS i180 Polymer Gears Made by Additive Manufacturing

open access: yesMachines
An assessment of different materials for additive manufacturing (AM) of polymer gears is presented in this research. Experimental testing is carried out for three different materials. Two materials are selected as the most common materials used for gears
Adis J. Muminović   +9 more
doaj   +1 more source

Assembly and Maintenance of Myofibrils in the Heart

open access: yesCytoskeleton, EarlyView.
ABSTRACT The assembly of actin and myosin to the paracrystalline arrangement of myofibrils in striated muscle, that is, heart and skeletal, has puzzled many a cell biologist. Different models, based on cultured cardiomyocytes, were proposed for the last 30 years to explain the sequence of events.
Elisabeth Ehler
wiley   +1 more source

High cycle fatigue and wear behavior of ta-C and a-C:H coated PEEK polymer spur gears under dry contact conditions

open access: yesPolymer Testing
Diamond-like carbon (DLC) coatings are under investigation as a potential solution for extending the service life of polymer gears. This study examines the fatigue and wear behavior of polyetheretherketone (PEEK) polymer gears coated with tetrahedral ...
Bor Mojškerc   +3 more
doaj   +1 more source

Fatigue properties of spring reinforces polymer gears

open access: yes, 2005
Failure of gears, occur surface pressure stress and fracture at base of teeth. For steel gears, it is known that process of carburizing increases fatigue strength. Internal stress on the surface increases of fracture fatigue strength. In this study fatigue properties of polypropylene gear reinforced with 1.2 mm wire diameter metallic springs was ...
Can, Hilal, Mendi, F, Topçu, Muzaffer
openaire   +2 more sources

Environment Friendly Sustainable End‐Of‐Life Solutions for Plastic Components in Indian Automotive Industries

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Growing concerns about the environmental and social consequences of plastics around the world, manufacturing industries are associated with business are focusing on sustainable end‐of‐life options‐based solutions which aim at increasing the product life cycle.
Sivakumar Kirupanandan   +3 more
wiley   +1 more source

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