Results 61 to 70 of about 6,014 (201)
Making vision into power : Britain's acquisition of the world's first radar-based integrated air defence system 1935 - 1941 [PDF]
, 2008 This thesis represents the first application of a current conceptual model of defence acquisition to analyse the historical process, the 1935 - 1941 British acquisition of an integrated air defence system pivoted upon the innovative technology of radar ...
Judkins, Phillip Edward
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Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
Improvement in control and gain aspects of impedance source inverters and converters
, 2019 Power electronics have revolutionized the concept of power control for power conversion and for control of electrical motor drives. Power electronics has been extensively used in industrial applications since it was first discovered in 1902.
Aleem, Zeeshan
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Advanced Engineering Materials, EarlyView.Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan +5 more
wiley +1 more source
Dinámica compleja en el convertidor reductor (buck)
, 2009 Los convertidores conmutados son dispositivos electrónicos ampliamente usados para adecuar los niveles de voltaje necesarios para alimentar equipos electrónicos de diversa índole.
MANUEL MOISES MIRANDA VELASCO
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Advanced Engineering Materials, EarlyView.Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
, 2014 本碩士論文包含可變頻率震盪器和可變增益放大器的實現和設計。在可變頻率震盪器設計中，設計出一個可以取代MOS可變電容的電路且全由NPN的BJT所組成。在磷化銦鎵/砷化鎵(GaInP/GaAs)製程中，只有NPN的BJT可以使用，所以這電路解決在磷化銦鎵/砷化鎵(GaInP / GaAs)製程中沒有可變電容的窘境。 在可變增益放大器設計中，利用兩級的電流鏡做為放大器，使用AC coupling 的方式把信號couple進來且把信號放大，中間級使用電流的方式把信號衰減，達到wide ...
陳東山
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Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization
Advanced Engineering Materials, EarlyView.Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier +17 more
wiley +1 more source
LAUREA MAGISTRALEIn questa tesi il progetto di un regolatore di tensione a bassa caduta (Low Drop-Out regulator, LDO) viene discusso in dettaglio. L'LDO, implementato in una tecnologia CMOS bulk a 28 nm, fornisce un'alimentazione stabile alla circuiteria
ALBEZZANO, ENRICO
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