Browsing Department of Mechanical and Aerospace Engineering by Title
Now showing items 744-763 of 916
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Region Based Convolutional Neural Networks for object detection and recognition in ADAS application
(2018-02-15)Object Detection and Recognition using Computer Vision has been a very interesting and a challenging field of study from past three decades. Recent advancements in Deep Learning and as well as increase in computational ... -
Reinitiation Mode Study of Highly Irregular Detonation
(2020-06-03)The propagation of detonation waves is governed by their stability characteristics. Interest in highly unstable detonation grew when early experiments revealed limits of operation to be directly proportional to the stability ... -
RELATING LINEAR AND ROTATIONAL ACCELERATIONS WITH INTERNAL PRESSURES DEVELOPED INSIDE HUMAN HEAD SURROGATE MODELS
(2021-12-21)Traumatic Brain Injury (TBI) is a chronic disease process that is difficult to both detect and treat. TBI can result from blast, kinetic, sonic, and electromagnet energy sources. This research focuses on correlating the ... -
RELIABILITY ASSESSMENT OF SOLDER JOINT INTERCONNECTS OF BGA PACKAGE-MEGTRON SERIES UNDER POWER CYCLING
(2017-12-11)Solder joint interconnects are the second level assembly in surface mount interconnection technology. Mismatch in the coefficient of thermal expansion (CTE) between package and substrate or PCB creates failure in solder ... -
RELIABILITY ASSESSMENT OF SOLDER JOINT USING BGA PACKAGE – MEGTRON 6 VERSUS FR4 PRINTED CIRCUIT BOARDS
(2017-05-24)When it comes to the mechanical and electrical seam of the Printed Circuit Board (PCB) and package, reliability of the board plays a major impact on PCB. As the frequency increases, losses in signals increase. This ... -
RELIABILITY ASSESSMENT OF SOLDER JOINT USING BGA PACKAGE – MEGTRON 6 VERSUS FR4 PRINTED CIRCUIT BOARDS USING DROP TESTING
(2018-01-09)In electronic industry Ball grid array (BGA) package, surface mount technology has been used widely, due to its robust design, high density connections and improved performance. In surface mount technology, solder joints ... -
RELIABILITY CHALLENGES IN AIRSIDE ECONOMIZATION AND OIL IMMERSION COOLING
(2016-05-16)The Datacom facility which comprises rooms or closets used for communication, computers/servers or electronic equipment requires cooling unit which consumes 31% (23% HVAC cooling + 8% HVAC fans) of overall energy. The ... -
RELIABILITY ENHANCEMENT OF HETEROGENEOUS 3D INTEGRATED CIRCUIT AND CHARACTERIZATION OF THERMAL INTERFACE MATERIAL
(2020-08-28)Electronic products require high functional integration in small footprints with lower cost. At the same time, it is required to maintain effective communication between the IC’s and the electronic systems. Various challenges ... -
Reliability of a 2.5D TSV package
(2018-08-13)In the recent years, the Through Silicon Vias (TSVs) are helping a huge variety of the 3D IC and the 2.5D IC packaging applications to try to fulfill their requirements of functionality and higher connectivity at the expense ... -
Reliability Of Lead-free Solder Under Cyclic Bending
(Mechanical Engineering, 2007-08-23)To characterize particular compositions of lead free solder, four point cyclic bending test was conducted to study the affects of accelerated stress testing on the package to board interconnects. Nine CTBGA packages with ... -
Remote Patient Monitoring using Health Bands with Activity Level Prescription
(2016-12-19)With the advent of new commercially available consumer grade fitness and health devices, it is now possible and very common for users to obtain, store, share and learn about some of their important physiological metrics ... -
Research For Dynamic Seal Friction Modeling In Linear Motion Hydraulic Piston Applications
(Mechanical Engineering, 2007-08-23)This paper presents a unique physics-based analytic model for dynamic seal friction in hydraulic actuators as a function of cylinder pressure, seal material, piston rod dimensions, piston rod seal gland dimensions, and ... -
Reverse Engineering to Create High Quality Polymer Parts Using Additive Manufacturing
(2022-01-10)Reverse engineering is a process of recreating parts for which the tools no longer exist, reducing the cost of an original part by manufacturing it in-house or redesigning and improving the original part's function. This ... -
Richtmyer-Meshkov Instability In Reactive Mixtures.
(Aerospace Engineering, 2010-07-19)This research analyzes the effect of reactivity on the Richtmyer-Meshkov instability with particular emphasis on the velocity and wave number scaling and on the effect of free detonation instability modes on the interface ... -
Robot Motion Tracking Using Time-of-flight And Structured Light Sensors For Indoor Navigation
(2018-05-21)Simultaneous localization and mapping for mobile robots has been an active research field for several years with focus on the problems of accuracy and dependability of the data from the robot's peripherals. The position ... -
Robust Predictive Analytics for Determining Acclimation parameter of IT Equipment
(2018-05-22)Acclimation is the process in which an IT equipment adjusts to a change in its environment such as a change in temperature and humidity, allowing it to maintain performance across a range of environmental conditions. In ... -
Robust Synthesis Methods for Cooperative Systems
(2022-12-20)Cooperative systems, like any other dynamic systems, suffer in performance because of uncertainty yet there is an added layer of uncertainty due to the communication among agents. Therefore, analytic solution to these ... -
ROTOR PERFORMANCE MODEL (RPM)
(2021-07-06)Rotorcraft performance modeling is of high interest with multiple industry codes in existence, many of which are high-fidelity and are comprehensive in the analyses that are achievable. Along with the high-fidelity and the ... -
ROTORDYNAMIC ENHANCEMENT BY UTILIZING THE CONTROLLED HYDROSTATIC INJECTION OF HYBRID AIR FOIL BEARING
(2017-12-14)Air foil bearings (AFBs) are introduced as promising bearings for oil-free turbomachinery applications. Air foil bearing (AFB) technology has made substantial advancement during the past decades and found its applications ... -
Rotordynamic Performance Of A Rotor Supported By Three Pad Hybird Foil Bearings With Controlled Air Injection
(Mechanical Engineering, 2014-03-10)Air Foil Bearings have found their place in the commercial applications of turbo machinery. They are cleaner and more reliable at high speeds than their conventional counterparts (Rolling Element Bearings). Low drag ...