Results 111 to 120 of about 280,763 (304)

Vacuum forming of thermoplastic sheet results in low-cost investment casting patterns [PDF]

open access: yes, 1964
Vacuum forming of a sheet of thermoplastic material around a mandrel conforming to the shape of the finished object provides a pattern for an investment mold.
Clarke, A. E., Jr.
core   +1 more source

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

open access: yesAdvanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source

A portable device for single point strain analysis in sheet metal forming processes. [PDF]

open access: yesHardwareX, 2022
Wankhede P   +3 more
europepmc   +1 more source

Method for making conductors for ferrite memory arrays [PDF]

open access: yes, 1974
The ferrite memory arrays are made from pre-formed metal conductors for the ferrite arrays. The conductors are made by forming a thin sheet of a metallizing paste of metal alloy powder, drying the paste layer, bisque firing the dried sheet at a first ...
Baba, P. D.   +2 more
core   +1 more source

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

open access: yesAdvanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky   +3 more
wiley   +1 more source

Wrinkling prediction in sheet metal forming and experimental verification [PDF]

open access: yes, 2003
In this work, the analysis of Hutchinson and Neale is used for wrinkling prediction. Under a number of assumptions, limitations and simplifications a wrinkling criterion with some restrictive applicability, is obtained. Unfortunately, Hutchinson analysis
Atzema, Eisso H.   +3 more
core   +1 more source

Combined Working Media-Based Forming on a Pneumo-Mechanical High Speed Forming Machine [PDF]

open access: yes
Quasi-static working media-based forming processes (WMF) permit the production of complex sheet metal parts with relatively little expense. The associated need for very high pressures and hence complex tools and machines for the production of fine ...
Djakow, E., Homberg, W., Tabakajew, D.
core   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

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