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Showing 1 to 20 of 441 for “"Shaft"”.
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Cracked shaft detection rig
… The designed rig is capable of testing cracked shafts under the effect of lateral and coupled lateral-torsional vibrations. The conventional vibration signature analysis approach has been employed for the purpose of test rig evaluation and condition monitoring. The test rig has been shown to be …
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Computer integrated manufacture of turned shaft assemblies
Call number: LD2668 .T4 ME 1988 M83
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Computer integrated manufacture of turned shaft assemblies
Call number: LD2668 .T4 ME 1988 M83
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Flexible shaft drilling for cased well exploration
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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DFIG-Based Split-Shaft Wind Energy Conversion Systems
In this research, a Split-Shaft Wind Energy Conversion System (SS-WECS) is investigated to improve the performance and cost of the system and reduce the wind power uncertainty influences on the power grid. This system utilizes a lightweight Hydraulic Transmission System (HTS) instead of the …
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Finite Element Analysis of a Shaft-Rotor System
… analyze a spinning rotor mounted to a circular shaft via an interference fit subjected to various operating environments. The power law creep model defined by Fingers was used to analyze three distinct rotor configurations. The first configuration was a constant temperature single lamina, …
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Humeral shaft fractures: epidemiology, outcomes and predictors of nonunion
Humeral shaft fractures comprise 1% of adult fractures, with isolated, closed injuries usually managed non-operatively in the first instance. However, there is limited data regarding the modern epidemiology of these injuries and understanding of longer-term patient-reported outcomes is incomplete. …
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A multivariable controller for an electromagnetic bearing/shaft system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Next generation probabilistic prediction model for submarine propulsion shaft life
… inspection interval for the propulsion shaft system, attempting to double the current 6-year inspection interval for the OHIO class of submarine it is replacing. However, an initial study conducted suggests unsatisfactory levels of failure at this interval due to corrosion fatigue, …
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Prediction of high-speed shaft natural frequencies employing harmonic excitation
A shaft and bearing system was developed with natural frequencies in the range of 8,000 to 60,000 rpm for the purpose of determining the practicality of low-speed harmonic excitation of high-speed natural frequencies. The analytical development and analysis utilized SPAR, a finite element program, …
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Fatigue optimization of an induction hardened shaft under combined loading
… of a notched, induction hardened, steel shaft subjected to combined bending and torsional loading. Finite element analysis is used first to develop unit-load factors for generating stress-time histories, and then, employing thermo-elastic techniques, to determine the residual stresses …
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Axial load transfer in large scale physical model drilled shaft foundations
Drilled shaft foundations are a widely implemented type of deep foundation used to support heavy loads from superstructures such as buildings and bridges. Uncertainties exist in the axial load transfer behavior of drilled shafts subject to loading and unloading cycles. A better understanding of the …
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Open Reduction and Interlocking IM nailing of Comminuted Humeral Shaft Fracture
연구목적 : 상완골 간부 분쇄 골절의 치료에서 관혈적 정복 및 교합성 골수강내 금속정 고정술의 치료 결과를 금속판 내고정술과 비교하고자 한다. 대상 및 방법 : 1997년 3월부터 2009년 12월 까지 상완골 간부 골절로 금속판 내고정술을 시행한 14례와 상완골 간부 분쇄골절에 대해 관혈적 정복 및 교합성 골수강내 금속정 고정술을 이용하여 수술을 시행한 38례이고, 최소 12개월 이상 추시하였으며 임상적 및 방사선학적 결과를 분석하였다. American Shoulder and Elbow Surgeon's (ASES) …
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Behavior of a cracked shaft during passage through a critical speed
… the effects of cracks on the dynamic behavior of shafts under acceleration or deceleration, in order to find methods or procedures capable of detecting the presence of cracks prior to failure. The equations of motion for a simply supported Bernoulli-Euler shaft are developed following Wauer's …
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The Influence of a Skewed Disk on a Flexible Rotating Shaft
… tests were conducted on a horizontal flexible shaft rotor system supported in two hydrodynamic journal bearings. The computer simulations were conducted with a program that uses a matrix transfer method to get the desired solution. The agreement between experiment and simulation is very good …
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Optimization study of incineration in a incinerator with a vertical radiation shaft.
… baffle into the main stream inside the radiation shaft in order to lower the gas temperatures entering the precipitator and to remove the existing recirculation zone in the shaft.
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Seismic Performance of Column-to-Drilled-Shaft Connections in Reinforced Concrete Bridges
Drilled shaft foundations are often used to support reinforced concrete bridge columns founded in soft soils or in locations where a small footprint is desired. Increasingly, the shaft is being built with a diameter larger than that of the column, to allow tolerance in the column placement and to …
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Improving PID controller of motor shaft angular position by using genetic algorithm
This study represents Genetic Algorithm optimization of PID parameters gain in model reference robust control system structure for desired position of incremental servomotor. Experiments had been took out via Lab-Volt 8063 Digital Servo system equipment at Servo Control Laboratory. The key issue …
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