Results 51 to 60 of about 467,081 (295)

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh   +6 more
wiley   +1 more source

Insulation for cryogenic tanks has reduced thickness and weight [PDF]

open access: yes, 1966
Dual seal insulation, consisting of an inner layer of sealed-cell Mylar honeycomb core and an outer helium purge channel of fiber glass reinforced phenolic honeycomb core, is used as a thin, lightweight insulation for external surfaces of cryogenic ...
Dumire, P. E.   +3 more
core   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

A simple open‐switch fault detection and diagnosis method for permanent magnet synchronous machines drive system based on DC‐link current

open access: yesIET Power Electronics, 2023
In the industry, there is still a substantial amount of old in‐service equipment without a fault warning function. To provide an effective fault monitoring scheme for the in‐service motor drive system inside the equipment, this paper proposes a fault ...
Zhichao Chen   +4 more
doaj   +1 more source

Insulation Workers

open access: yes, 2000
Insulation workers apply insulation materials on objects and buildings for thermal insulation and/or waterproofing. They are frequently outdoor workers and they are exposed to insulation materials, especially mineral fibers, foams, adhesives, and bitumen.
openaire   +2 more sources

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente   +3 more
wiley   +1 more source

Structural design and temperature control enabling high sensitivity nanomaterial-based three-electrode gas sensors

open access: yesScientific Reports
Ionization based gas sensors using nanomaterials hold significance in monitoring gases but often suffer from issues such as excessive positive ion bombardment, which reduces lifespan, current collection, and detection accuracy.
Muhammad Waqas   +4 more
doaj   +1 more source

Vacuum arc transient behaviors and voltage characteristics in low-current DC interruption under rotating TMF

open access: yesAIP Advances, 2020
The objective of this work is to determine the relationship between the vacuum arc transient behaviors and voltage characteristics in low-current DC interruption under a rotating transverse magnetic field (TMF).
Hui Ma   +6 more
doaj   +1 more source

New materials for fireplace logs [PDF]

open access: yes, 1971
Fibrous insulation and refractory concrete are used for logs as well as fireproof walls, incinerator bricks, planters, and roof shingles. Insulation is lighter and more shock resistant than fireclay.
Kieselback, D. J., Smock, A. W.
core   +1 more source

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

open access: yesAdvanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu   +4 more
wiley   +1 more source

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