Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Vacuum Testing"”.
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Creep, fatigue, and environmental response of Alloy 800H tested at 900 degrees C
… carried out at 900$\sp\circ$C in lab air and in vacuum on Alloy 800H. Three different notch acuities were chosen so that the effect of stress intensity on the rupture lifetimes could be examined. The effect of oxidation on the creep rupture lifetimes has also been examined using reduced section …
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Investigation of the potential applications of shape memory alloys for space debris remediation applications
… Mk-II. The device has completed thermal and vacuum testing at the Institute for Space Systems in Stuttgart Germany to assess its performance under various environmental conditions.
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Moiré interferometry at high temperatures
… measurements at high temperatures in a vacuum oven using an achromatic interferometer. The moiré system setup was designed with particular consideration for the stability, compactness, flexibility, and ease of control. A vacuum testing environment was provided to minimize the instability …
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Examining 3D Printed Antennas For Space Based Applications
… when dealing with space including, high vacuum, magnetic fields, electromagnetic radiation (UV rays, X- ray, and gamma rays), charged electrons and protons, and extreme temperatures. In this project 3 patch antennas were 3D printed out of ABS for use at 5, 10, 25 GHz. The antennas …
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Hobby Grade Lithium-Ion Batteries for Spacecraft Applications: Establishing an Automated Electrical Characteristics Testing Procedure For Flight Acceptance of non-Space-Grade Small Secondary Batteries
… <p>The goal of this work is to establish testing setups and procedures that will give an accurate profile of the electrochemical properties of lithium-ion batteries. Ten of the tested batteries will be used as the secondary power supply on ARKSAT-1, a CubeSat mission being conducted at the …
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Validation and Characterization of a Laboratory Ion Source for Testing Thermal Space-Plasma Instruments
… to stimulate thermal plasma instruments in a vacuum chamber. This dissertation presents the mechanical design of the source, simulations of the potentials and charged particle trajectories in and around the source, and vacuum chamber measurements of the emitted ion beam. Once the ion source is …
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Development of Adapted Capacitance Manometer for Thermospheric Applications
An adapted capacitance manometer is a sensor composed of one fixed plate and one movable plate that is able to make accurate pressure measurements in a low pressure environment. Using detection circuitry, a change in capacitance between the two plates can be measured and correlated to a …