Results 61 to 70 of about 7,514 (171)

Very high cycle fatigue of fiber‐reinforced polymer composites: Uniaxial ultrasonic fatigue

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 9, Page 3083-3115, September 2024.
Abstract This review explores uniaxial ultrasonic fatigue (USF) testing as a common and dependable method for quantifying the extended fatigue life of fiber‐reinforced polymer (FRP) composites. The objective is to explain the complexities governing the fatigue life behavior of FRPs, particularly in the realm of very high cycle fatigue (VHCF) where the ...
Alireza Behvar   +6 more
wiley   +1 more source

Sub-idle modelling of gas turbines: Altitude relight and windmilling [PDF]

open access: yes, 2007
Gas turbine sub-idle performance modelling is still in an early development stage and this research aims to provide and improve present techniques, for modelling of windmilling and transient windmilling relights, through to groundstart simulations ...
Howard, Jason
core  

Performance and Emissions Assessment of a Micro-Turbojet Engine Fueled with Jet A and Blends of Propanol, Butanol, Pentanol, Hexanol, Heptanol, and Octanol

open access: yesFire
This study examines the impact of alcohol blends on the performance and emissions of aviation micro-turbojet engines. Thus, propanol, butanol, pentanol, hexanol, heptanol, and octanol were tested at 10%, 20%, and 30% concentrations and mixed with Jet A ...
Grigore Cican   +6 more
doaj   +1 more source

Novel technique of vibration minimization during hard machining

open access: yesEngineering Reports, Volume 6, Issue 8, August 2024.
This research study examines the performance of electrorheological fluids, also referred to as smart fluids, which have gained popularity because they instantly alter when exposed to an external magnetic or electric field. When high voltage is applied, the ER fluid quickly changes from a viscous liquid to a semisolid state, which is reversible.
Aditi D. Apte   +6 more
wiley   +1 more source

Schematic configuration of single-spool turbojet engine.

open access: yes, 2017
Schematic configuration of single-spool turbojet engine.
Xiaofeng Liu (35910)   +2 more
core   +1 more source

Life cycle assessment of hydrogen production, storage, and utilization toward sustainability

open access: yesWIREs Energy and Environment, Volume 13, Issue 3, May/June 2024.
The review emphasizes LCA's pivotal role in guiding the hydrogen economy toward a low‐carbon future, positioning hydrogen as a versatile energy carrier with significant potential. Abstract In the pursuit of sustainable energy solutions, hydrogen emerges as a promising candidate for decarbonization.
Ahmed I. Osman   +8 more
wiley   +1 more source

Symbols of the single-spool turbojet engine.

open access: yes, 2017
Symbols of the single-spool turbojet engine.
Xiaofeng Liu (35910)   +2 more
core   +1 more source

The proof of concept of uninterrupted push‐pull electromagnetic propulsion and energy conversion systems for drones and planet landers

open access: yesEngineering Reports, Volume 6, Issue 1, January 2024.
We present a proof of concept to demonstrate the capability of a newly invented variable speed push‐pull electromagnetic propulsion system for uninterruptedly generating the reciprocating motion of a magnetic‐piston by a solar battery‐driven polarity changer timing circuit together with a laser‐based timing circuit for redundancy.
Sanal Kumar VR   +8 more
wiley   +1 more source

Performance Analysis Of A Micro Turbojet Engine

open access: yes, 2014
— The reason behind doing this work was to prepare an experimental procedure of a micro turbojet engine for the laboratory education purpose. By operating a micro turbojet engine one can get an idea about the basic processes in a Brayton cycle and it ...

core  

Performance of a ducted micro-turbojet engine [PDF]

open access: yes, 1999
A turbo-ramjet engine configuration has possible applications in missiles or Uninhabited Aerial Vehicle's (UAV's). In order to study possible configurations, a Sophia J450 turbojet engine was used, with varying shroud configurations, to compare static ...
Andreou, Loukas.
core  

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