Author: Mark S. MauricePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A Particle Size Distribution Technique Using Conventional Laser Velocimetry Measurements
Author: Mark S. MauriceParticle Sizing Experiments with the Laser Doppler Velocimeter
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurement techniques for in-situ simultaneous measurements of particle size distributions and particle velocities using the dual beam laser Doppler velocimeter (LV) were analytically and experimentally investigated. This investigation examined the different signal characteristics of the LV for determination of particle size and particle velocity, simultaneously. The different size related signal components were evaluated not only singularly but also as simultaneous measurements to determine which characteristic, or combination of characteristics, provided the best measure of particle size. The evaluation concentrated on the 0.5 to 5 .mu.m particle size range, in which the LV light scattering characteristics are complex often non-monotonic functions of the particle size as well as functions of index of refraction, the laser light wavelength, laser intensity and polarization, and the location and response characteristics of the detector. Different components of the LV signal were considered, but analysis concentrated on Doppler phase, visibility and scatter-intensity because they show the greatest promise. These signals characteristics were initially defined analytically for numerous optical configurations over the 0.5 to 5 .mu.m diameter range with 0.1 .mu.m segmentation, for refractive index values from 1.0 to 3.0 with absorptive (imaginary) components varied form 0 to 1.0. Collector orientation and effective f/No., as well as fringe spacing, beam polarization and wavelength, were varied in this analytical evaluation. 18 refs., 42 figs., 5 tabs.
AIAA Journal
Author: American Institute of Aeronautics and AstronauticsPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1364
Book Description
Liquid Particle Size Measurement Techniques, 2nd Volume
Author: E. Dan HirlemanPublisher: ASTM International
ISBN: 0803114591
Category : Drops
Languages : en
Pages : 259
Book Description
Development of a Simplified Optical Technique for the Simultaneous Measurement of Particle Size Distribution and Velocity
Author: James Lee SmithPublisher:
ISBN:
Category : Laser Doppler velocimeter
Languages : en
Pages : 40
Book Description
International Aerospace Abstracts
Author: Measurement of Size Distribution of Submicron Particles Using New Laser Diagnostics
Author: James F. DriscollPublisher:
ISBN:
Category :
Languages : en
Pages : 31
Book Description
The one year research program described here was a direct extension of work completed during the 1977 AFOSR/ASEE Summer Faculty Research program at AFRPL. During that program the author and Dr. David Mann, AFRPL, performed the first is situ size measurements of submicron alumina (Al2O3) particles that have been published to date. The new laser diagnostic technique used, Diffusion Broadening Spectroscopy, represents a new advance in the state-of-the-art of submicron particle sizing. The goal of the research described herein was to develop a data reduction procedure to extend the applicability of the technique, so that size distribution half width can be measured, in addition to particle mean diameter. The computer routine was developed to determine particle mean diameter and size distribution half width, given light scattering data obtained at two scattering angles. Sensitivity of the results was investigated and feasibility of future use of the technique in rocket motors and plumes was deduced. (Author).
Particle Size Measurements
Author: Henk G. MerkusPublisher: Springer Science & Business Media
ISBN: 1402090161
Category : Technology & Engineering
Languages : en
Pages : 535
Book Description
This book focuses on the practical aspects of particle size measurement: a major difference with existing books, which have a more theoretical approach. Of course, the emphasis still lies on the measurement techniques. For optimum application, their theoretical background is accompanied by quantitative quality aspects, limitations and problem identification. In addition the book covers the phenomena of sampling and dispersion of powders, either of which may be dominant in the overall analysis error. Moreover, there are chapters on the general aspects of quality for particle size analysis, quality management, reference materials and written standards, in- and on-line measurement, definitions and multilingual terminology, and on the statistics required for adequate interpretation of results. Importantly, a relation is made to product performance, both during processing as well as in final application. In view of its set-up, this book is well suited to support particle size measurement courses.
Applied Mechanics Reviews
Author: Aerosol Measurement
Author: Pramod KulkarniPublisher: John Wiley & Sons
ISBN: 1118001672
Category : Science
Languages : en
Pages : 1497
Book Description
Aerosol Measurement: Principles, Techniques, and Applications Third Edition is the most detailed treatment available of the latest aerosol measurement methods. Drawing on the know-how of numerous expert contributors; it provides a solid grasp of measurement fundamentals and practices a wide variety of aerosol applications. This new edition is updated to address new and developing applications of aerosol measurement, including applications in environmental health, atmospheric science, climate change, air pollution, public health, nanotechnology, particle and powder technology, pharmaceutical research and development, clean room technology (integrated circuit manufacture), and nuclear waste management.