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Topic Review
Failure Modes of the Electric Motors
The reliability assessment of electric machines plays a very critical role in today’s engineering world. The reliability assessment requires a good understanding of electric motors and their root causes. Electric machines mostly fail due to mechanical problems and bearing damage is the main source of this. The bearings can be damaged by mechanical, electrical, and thermal stresses. Among all stresses, the researcher should give special attention to the electrical one, which is bearing current and shaft voltage.
  • 1.5K
  • 21 Jun 2023
Topic Review
Failures and Flaws in Fused Deposition Modeling
The potential failures and flaws associated with fused deposition modeling (FDM) or fused filament fabrication (FFF) 3D printing technology are highlighted. The focus is on presenting the failures and flaws that are caused by the operational standpoints and which are based on the many years of experience with current and emerging materials and equipment for the 3D printing of polymers and composites using the FDM/FFF method. FDM or FFF 3D printing, which is also known as an additive manufacturing (AM) technique, is a material processing and fabrication method where the raw material, usually in the form of filaments, is added layer-by-layer to create a three-dimensional part from a computer designed model.
  • 786
  • 13 Jul 2022
Topic Review
Failures of the Photovoltaic Module Components
With the global increase in the deployment of photovoltaic (PV) modules, the need to explore and understand their reported failure mechanisms has become crucial. Despite PV modules being considered reliable devices, failures and extreme degradations often occur. Some degradations and failures within the normal range may be minor and not cause significant harm. Others may initially be mild but can rapidly deteriorate, leading to catastrophic accidents, particularly in harsh environments.
  • 286
  • 12 Mar 2024
Biography
Fairman Rogers
Fairman Rogers (November 15, 1833 – August 22, 1900) was an United States civil engineer, educator, and philanthropist, born in Philadelphia, Pennsylvania. He graduated from the University of Pennsylvania in 1853, and taught civil engineering there from 1855 to 1871.[1] He was one of four professors who founded its Department of Mines, Arts and Manufacturers (1855), and he served as a Univers
  • 447
  • 15 Dec 2022
Topic Review
Fall Detection and Activity Logging Using Motion Classification
The entry presents a novel approach to detect falls in people who use orthopedic walkers, especially in older people and people with limited mobility. Recognizing that walker users may not wear traditional wearable devices, such as bracelets, consistently, the researchers propose connecting an Internet of Things (IoT) device equipped with an inertial measurement unit (IMU) sensor directly to the walker. This setup aims to provide real-time fall detection and activity logging. To support this system, a data set capturing four distinct activities of walker users was collected and labeled: idle, motion, step, and fall.
  • 295
  • 27 Oct 2023
Topic Review
Fall Risk Assessment Using Wearable Sensors
Fall risk assessment based on wearable sensors can be performed from a long-term perspective, in which sensor data is used to predict subject’s long-term fall risk based on clinical scale scores, or from a short-term approach, where data collected is used to detect pre-fall/unbalanced situations in real-time and consequently identify fall risk events.
  • 739
  • 24 Feb 2022
Topic Review
False Data Injection Attacks
False data injection attacks (FDIAs), as a covert cyber-attack method, pose a huge challenge to the safe and stable operation of smart grids by illegally hacking into power systems to tamper with measurement data and thus undermine data integrity.
  • 1.2K
  • 06 Apr 2022
Topic Review
Fangzhou UAV
Fangzhou UAVs are Chinese UAVs developed by Suzhou Fangzhou (meaning Ark) Aerial-Model Co., Ltd. (Fangzhou, 苏州方舟航模有限公司). Originally a successful model aircraft manufacturer, Tiancai has expanded its business into UAV arena based on the experience gained in developing model aircraft. Currently, all UAV developed by Fangzhou are unmanned blimps in categories listed below.
  • 429
  • 01 Dec 2022
Topic Review
Farming and Cultivation
We like to report on the concept of an advanced energy-engineering system for self-sustainable and rural areas farming and cultivation (RAFC). In this energy-engineering approach, we accounted for the effects of thin-film coated energy-saving features, in an optimized off-grid hybrid power generation system for advanced farm-house. Design and optimization of a hybrid (photovoltaic-battery-generator) power system have been performed by using the Hybrid Optimization of Multiple Energy Resources (HOMER Pro _ Version 3.14.0) software, developed by National Renewable Energy Limited (NREL, Boulder, CO 80301, USA). Optimized results show that the off-grid hybrid system together with the additional Low-E type coating assisted energy-saving features is more feasible for next-generation modern cultivation and farming with long-term sustainability. 
  • 775
  • 26 Oct 2020
Topic Review
Fast Data Acquisition Systems
Data acquisition is the process by which physical phenomena from the real world are transformed into electrical signals that are measured and converted into a digital format for processing, analysis, and storage by a computer. In a large majority of applications, the data acquisition (DAQ) system is designed not only to acquire data but to act on it as well. In defining DAQ systems, it is, therefore, useful to extend this definition to include the control aspects of the total system. A DAQ system is comprised of a computer running specialized software and several data acquisition cards and/or instruments (from now on jointly referred to as DAQ devices). Data acquisition (DAQ) systems are intensively used in laboratory research, industrial facilities, aviation, automotive, etc. The applications include test and measurement, automation, etc.
  • 1.2K
  • 20 Oct 2023
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