Thesis (M.S.)--Brigham Young University. Dept. of Mechanical Engineering, 2004. / Includes bibliographical references (p. 87-89).

The growth of thrust and improved aeroengine efficiency has been gained by increased temperatures throughout the engine. This has been achieved by improved material technology and the continuous cooling of components complemented by the addition of thermal barrier coatings (TBC) to turbine and combustion chamber components. The aggressive nature of the application process of the TBC has previously made the measurement of metal surface temperature and strain exceedingly difficult on components to which it is applied. In the present study magnetron sputter-deposited thin film sensor techniques have been developed specifically for compressor and turbine applications of noble metal thermocouples and strain gauges. The deposition, patterning and evaluation of reactively sputtered aluminium oxide, type R platinum thermocouples as well as PdCr and PtW dynamic strain gauges is reported. A sputtered NiCoCrAlY coating has been developed to replace the vacuum plasma spray process currently used in the TBC system. The most favourable location for the thin film sensor is at the metal/ceramic interface of the TBC system. However, in order to protect the sensor from the aggressive TBC process, the sensor has been deposited in a novel installation between two layers of NiCoCrAlY bond coat. Several trials have been performed to fabricate this package on turbine blade material substrates. This work has demonstrated that the proposed sensor structure is feasible. However there are problems with delamination due to contamination and residual stress and with poor electrical insulation and these have limited the high temperature testing that could be performed. The novel techniques developed are already being utilised in measurement applications on components without TBCs. This work has been performed in an industrial context. The extensive project and risk management activities are reported.

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<p>To get the maximal output of your exercise in gym machines, there are different factors</p><p>to be considered. For example the strength of the muscle varies dependent on the position</p><p>of the muscles. To get the best results of the exercise the load has to reduce and increase</p><p>at specific positions.</p><p>This study was made in cooperation with Caretaker Scandinavia AB, a company for</p><p>sales, marketing and development in health care. They are general agent for Nordic Gym</p><p>who works with manufacturing of equipment and machines for gym and fitness.</p><p>The aim of this study was to generate a method of measurement to evaluate and control</p><p>the biomechanics of Nordic Gym´s workout equipment. A protocol for an ergonomic</p><p>analysis on the equipment has also been elaborated.</p><p>One of the methods to measure the biomechanics was to measure the torque through the</p><p>whole movement. The other method was electromyography (EMG). The EMGequipment</p><p>registers electric signals that are generated in a working muscle, and makes it</p><p>possible to see when the maximum muscle activity achieves. The results of those</p><p>measurements will be compared to the muscles strengthprofile which describes how the</p><p>muscle generates power in different positions throughout the movement.</p><p>To measure the ergonomics an ergonomic protocol where produced, which was based on</p><p>ergonomics aspect, adapted to gym machines.</p><p>The method of measurement where tested on Nordic Gym´s training machine 101SE leg</p><p>extension and Free Motion´s machine Leg Extension GZF18013 and this machines where</p><p>controlled and evaluated. Two test persons tried out the machines and the machines</p><p>where analysed in an ergonomic and a biomechanical perspective. The result shows that</p><p>the biomechanics of Nordic Gym´s machine where a bit better than the biomechanics of</p><p>FreeMotion´s machine. But in the both case the difference between the values of torque is</p><p>marginal, to improve the biomechanics insistence a bigger different should be necessary</p><p>to use. The ergonomic analyse of the machines showed that the ergonomics where good</p><p>and well planed. Both machines had some small ergonomic lacks, which can be</p><p>improved.</p>

To get the maximal output of your exercise in gym machines, there are different factors to be considered. For example the strength of the muscle varies dependent on the position of the muscles. To get the best results of the exercise the load has to reduce and increase at specific positions. This study was made in cooperation with Caretaker Scandinavia AB, a company for sales, marketing and development in health care. They are general agent for Nordic Gym who works with manufacturing of equipment and machines for gym and fitness. The aim of this study was to generate a method of measurement to evaluate and control the biomechanics of Nordic Gym´s workout equipment. A protocol for an ergonomic analysis on the equipment has also been elaborated. One of the methods to measure the biomechanics was to measure the torque through the whole movement. The other method was electromyography (EMG). The EMGequipment registers electric signals that are generated in a working muscle, and makes it possible to see when the maximum muscle activity achieves. The results of those measurements will be compared to the muscles strengthprofile which describes how the muscle generates power in different positions throughout the movement. To measure the ergonomics an ergonomic protocol where produced, which was based on ergonomics aspect, adapted to gym machines. The method of measurement where tested on Nordic Gym´s training machine 101SE leg extension and Free Motion´s machine Leg Extension GZF18013 and this machines where controlled and evaluated. Two test persons tried out the machines and the machines where analysed in an ergonomic and a biomechanical perspective. The result shows that the biomechanics of Nordic Gym´s machine where a bit better than the biomechanics of FreeMotion´s machine. But in the both case the difference between the values of torque is marginal, to improve the biomechanics insistence a bigger different should be necessary to use. The ergonomic analyse of the machines showed that the ergonomics where good and well planed. Both machines had some small ergonomic lacks, which can be improved.

This thesis describes the development and the verification of a novel micro probe system for high accurancy downscaled Coordinate Measuring Machines (CMMs).

Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.