Results 31 to 40 of about 367,216 (307)

Corrugated composites: production-integrated quality assurance in carbon fiber reinforced thermoplastic sine wave beam production

open access: yesAdvanced Manufacturing: Polymer & Composites Science, 2017
Carbon fiber-reinforced thermoplastics offer the possibility for short lead times and dustless assembly in aerospace applications. However, their great potential for efficient processing to date is not entirely exploited.
Frederic J. C. Fischer   +6 more
doaj   +1 more source

A computational framework for canonical holistic morphometric analysis of trabecular bone

open access: yesScientific Reports, 2022
Bone is a remarkable, living tissue that functionally adapts to external loading. Therefore, bone shape and internal structure carry information relevant to many disciplines, including medicine, forensic science, and anthropology.
Sebastian Bachmann   +4 more
doaj   +1 more source

Influence of Novel Airframe Technologies on the Feasibility of Fully-Electric Regional Aviation

open access: yesAerospace, 2021
The feasibility of regional electric aviation to reduce environmental impact highly depends on technological advancements of energy storage techniques, available battery energy density, and high-power electric motor technologies.
Stanislav Karpuk, Ali Elham
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

The Influence of Ultrasonic Irradiation of a 316L Weld Pool Produced by DED on the Mechanical Properties of the Produced Component

open access: yesCrystals
Additive manufacturing of metallic components often results in the formation of columnar grain structures aligned along the build direction. These elongated grains can introduce anisotropy, negatively impacting the mechanical properties of the components.
Dennis Lehnert   +7 more
doaj   +1 more source

Boundary conformal design of laser sintered sandwich cores and simulation of graded lattice cells using a forward homogenization approach

open access: yesMaterials & Design, 2020
Laser sintering enables the production of large and complex thin-walled structures. Based on a stiffness evaluation and the manufacturability, a design approach for the additive manufacturing of large, complex, multi-curved sandwich structures was ...
David Marschall   +3 more
doaj   +1 more source

Low-Cycle Fatigue Behavior of Hot-Bent Basal Textured AZ31B Wrought Magnesium Alloy

open access: yesMetals, 2021
In the recent past, several researchers have successfully modeled the complex fatigue behavior of planar twin-roll cast AZ31B alloy sheets. Complex components are usually hot-bent, whereby the microstructure in the hot-bent areas changes significantly ...
Anton Nischler   +4 more
doaj   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

Optimization, Design, and Manufacturing of New Steel-FRP Automotive Fuel Cell Medium Pressure Plate Using Compression Molding

open access: yesVehicles
In this work, a new plastic-intensive medium-pressure plate (MPP), which is part of a fuel-cell system, has been developed together with a steel plate meeting all mechanical and chemical requirements. This newly developed MPP had to achieve the objective
Sharath Christy Anand   +3 more
doaj   +1 more source

A foldable 4.27 meter (14 foot) spacecraft antenna [PDF]

open access: yes, 1972
The problems and solutions associated with the design, fabrication, and testing of a large, lightweight, radial-rib, folding, spacecraft antenna reflector are discussed.
Starkey, D. J.
core   +1 more source

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