Download or read book Development of Dynamic Pressure Sensor for High Temperature Applications written by Alfin Leo and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The 1992 NASA Langley Measurement Technology Conference written by Jag J. Singh and published by . This book was released on 1992 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Pressure Sensors for Hypersonic Flow Measurements written by Yoonho Seo (Ph. D.) and published by . This book was released on 2020 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Ph.D. dissertation will focus on the research and development of an acoustic pressure sensor tailored for hypersonic boundary layer flow measurements. Hypersonic boundary layer flows comprise shocks, laminar-to-turbulent transitions, and high-frequency turbulence with small (sub 1-mm) characteristic length scales. Non-invasive acoustic pressure measurements at the walls of such flows offer useful diagnostics and are desired by the hypersonic community. The desired sensor specification are as follows: operation up to 1,000-K temperature, 0.5-MHz bandwidth, and sensing elements spanning less than 1 mm. The chosen embodiment is a piezoelectric sensor employing AlN as the sensing material. Preliminary prototypes have been micromachined at the UT MRC. These sensors are comprised of diaphragms with 500-μm diameter and 2-μm thickness. The sensors have been packaged into a cylindrical form factor with 0.25-inch diameter for mounting in hypersonic test-tunnel facilities. The dissertation will focus on the rigorous performance characterization of these sensors, the exploration of an array embodiment to enable pressure gradient measurements, and sensor design and characterization at elevated temperatures

Download or read book Research and Technology Program Digest written by United States. National Aeronautics and Space Administration and published by . This book was released on with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Development of a High Resolution Differential Pressure Transducer for Use at High Temperature and High Pressure written by Laren Paul Childers and published by . This book was released on 1984 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Additive Manufacturing with Functionalized Nanomaterials written by Sunpreet Singh and published by Elsevier. This book was released on 2021-04-09 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The greatest benefits of nanoscale additive manufacturing lie in biomedicine, smart devices/sensors, energy harvesting, aerospace, and manufacturing. This book explores the recent applications of functionalized nanomaterials-based additive manufacturing to benefit different manufacturing domains, including design and process aspects, as well as outlining major application areas. This book summarizes recent progress of functionalized nanomaterials-based additive manufacturing on both an experimental and a theoretical model level. Though nanomaterials can be fabricated by bottom-up and top-down approaches (techniques include lithography, photolithography, and micro-machining), the applications of additive manufacturing processes are increasing at an exponential rate and therefore, the demand for high-performance materials has been greatly increasing. Recent applications covered in this book include biomedicine, aerospace, automobile, waste recycling, and energy storage devices. Environmental, regulatory and safety issues are also discussed. This book is an important reference source for materials scientists and engineers who are seeking to improve their understanding of how functionalized nanomaterials are playing an increasingly important role in the additive manufacturing process. Brings together recent innovations and practices of nanomaterials in additive manufacturing processes Outlines major nanomaterials-based additive manufacturing techniques Discusses major applications in a range of industry sectors, including in energy, automotive and biomedicine

Download or read book Expanding the Vision of Sensor Materials written by Committee on New Sensor Technologies: Materials and Applications and published by National Academies Press. This book was released on 1995-07-06 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in materials science and engineering have paved the way for the development of new and more capable sensors. Drawing upon case studies from manufacturing and structural monitoring and involving chemical and long wave-length infrared sensors, this book suggests an approach that frames the relevant technical issues in such a way as to expedite the consideration of new and novel sensor materials. It enables a multidisciplinary approach for identifying opportunities and making realistic assessments of technical risk and could be used to guide relevant research and development in sensor technologies.

Download or read book Research and Technology Program Digest Flash Index written by and published by . This book was released on 1967 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silicon Carbide Pressure Sensors for High Temperature Applications written by Sheng Jin and published by . This book was released on 2011 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 1696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Tech Briefs written by and published by . This book was released on 2004 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fiber Optic Sensors and Systems written by and published by Information Gatekeepers Inc. This book was released on with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings Reports and Prints of the Senate Committee on Labor and Public Welfare written by United States. Congress. Senate. Committee on Labor and Public Welfare and published by . This book was released on 1964 with total page 1418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conception and Optimization of a Piezo optic Pressure Transducer written by Mathieu Guilhem and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The measurement of pressure is a field that has been studied for centuries due to its important technological implications. Our goal is to propose an original method to measure high hydrostatic pressures using a low cost optical sensor. A number of pressure sensors have been developed over the years, and the first part of this work presents an overview of the main ones. We then focus on optical pressure sensors, discuss the advantages and inconveniences of each method with regards to our constraints, and decide to develop the concept of a sensor based on the piezo-optic effect, i.e. the stress-induced birefringence in a transparent dielectric subjected to a force. We presents the tools that will be used to modelize the piezo-optic pressure sensor: we first review the theory of polarization of light, from its physical origin to the Mueller-Stokes formalism; we then focus on the interaction of polarized light with matter: we discuss the theory of the piezooptic effect and the polarization effects of total and partial reflections at an interface. Both effects are modelized in terms of their Mueller matrices. We then propose an original concept for a pressure sensor, using an approach different from the one usually seen in polarimetric sensors. First the concept of a piezo-optic pressure sensor is presented where polarized light interacts with a dielectric material subjected to a pressure; the resulting state of polarization is analyzed by a second polarizer and a photodetector. Some aspects of the sensor are optimized while its shortcomings are listed. In light of this analysis we propose a revised concept to addresses these issues. The new proposal uses carefully oriented reflections to replace all polarizing elements, enabling simpler and cheaper production. We modelize this device, analyze its optical behavior, and then present the different sources of measurement error. Most of them are negligible, and we present methods to mitigate the influence of these that are not. Part IV focuses on the experimental validation of the concepts presented so far. We describe the conception, calibration and validation of a Fourier Transform Mueller polarimeter that we intend to use to study the temperature dependence of the piezo-optic effect. We build a prototype based on the initial concept of the piezo-optic pressure sensor presented in Part III, and test its response to pressure. Its behaviour is found to be coherent with theoretical predictions, and these measurement serve to validate the concept of the sensor that was developed during this work.