Author: Vincent A. Del Grosso
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
Book Description
The exact formulation of the characteristic or frequency equation for an inviscid liquid cylinder radially enclosed within a finite impedance elastic solid of finite wall thickness is solved for the permissible modes, including degenerations to the surrounding medium being of infinite extent and either an elastic solid or another liquid, as well as to the limiting cases of infinite impedance (rigid boundary) and zero impedance (free boundary). These modes are utilized to expand both the potential within the otherwise unterminated cylinder and the source impedance variation with position of an opposing termination. A piston source of appreciable ka (=100 pi) is found to render further source specification indifferent as to uniform pressure or uniform velocity, and a large radial impedance mismatch (=28) is found to permit a simplifying orthogonality assumption. With the inviscid assumption, the formulation indicates that a judicious selection of experimental configuration can limit diffraction propagation uncertainties to a few parts per million. An incidental result is the demonstration that the zero elastic tube mode exists at all frequencies rather than displaying an upper cutoff frequency as was recently reported. (Author).
Systematic Errors in Ultrasonic Propagation Parameter Measurements. Part 4-effect of Finite Thickness Elastic Solid Tubes Enclosing the Liquid Cylinder of Interest
Author: Vincent A. Del Grosso
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
Book Description
The exact formulation of the characteristic or frequency equation for an inviscid liquid cylinder radially enclosed within a finite impedance elastic solid of finite wall thickness is solved for the permissible modes, including degenerations to the surrounding medium being of infinite extent and either an elastic solid or another liquid, as well as to the limiting cases of infinite impedance (rigid boundary) and zero impedance (free boundary). These modes are utilized to expand both the potential within the otherwise unterminated cylinder and the source impedance variation with position of an opposing termination. A piston source of appreciable ka (=100 pi) is found to render further source specification indifferent as to uniform pressure or uniform velocity, and a large radial impedance mismatch (=28) is found to permit a simplifying orthogonality assumption. With the inviscid assumption, the formulation indicates that a judicious selection of experimental configuration can limit diffraction propagation uncertainties to a few parts per million. An incidental result is the demonstration that the zero elastic tube mode exists at all frequencies rather than displaying an upper cutoff frequency as was recently reported. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
Book Description
The exact formulation of the characteristic or frequency equation for an inviscid liquid cylinder radially enclosed within a finite impedance elastic solid of finite wall thickness is solved for the permissible modes, including degenerations to the surrounding medium being of infinite extent and either an elastic solid or another liquid, as well as to the limiting cases of infinite impedance (rigid boundary) and zero impedance (free boundary). These modes are utilized to expand both the potential within the otherwise unterminated cylinder and the source impedance variation with position of an opposing termination. A piston source of appreciable ka (=100 pi) is found to render further source specification indifferent as to uniform pressure or uniform velocity, and a large radial impedance mismatch (=28) is found to permit a simplifying orthogonality assumption. With the inviscid assumption, the formulation indicates that a judicious selection of experimental configuration can limit diffraction propagation uncertainties to a few parts per million. An incidental result is the demonstration that the zero elastic tube mode exists at all frequencies rather than displaying an upper cutoff frequency as was recently reported. (Author).
Report of NRL Progress
Author: Naval Research Laboratory (U.S.)
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 558
Book Description
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 558
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 304
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 304
Book Description
U.S. Government Research and Development Reports Index
Author:
Publisher:
ISBN:
Category : Nuclear science abstracts
Languages : en
Pages : 1012
Book Description
Publisher:
ISBN:
Category : Nuclear science abstracts
Languages : en
Pages : 1012
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
Bibliography of Scientific and Industrial Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1020
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1020
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 690
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 690
Book Description
Government Reports Index
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 732
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 732
Book Description
Cumulative Title Index to United States Public Documents, 1789-1976
Author: Daniel W. Lester
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 816
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 816
Book Description
Radiation Oncology Physics
Author: International Atomic Energy Agency
Publisher: IAEA
ISBN:
Category : Business & Economics
Languages : en
Pages : 704
Book Description
This publication is aimed at students and teachers involved in teaching programmes in field of medical radiation physics, and it covers the basic medical physics knowledge required in the form of a syllabus for modern radiation oncology. The information will be useful to those preparing for professional certification exams in radiation oncology, medical physics, dosimetry or radiotherapy technology.
Publisher: IAEA
ISBN:
Category : Business & Economics
Languages : en
Pages : 704
Book Description
This publication is aimed at students and teachers involved in teaching programmes in field of medical radiation physics, and it covers the basic medical physics knowledge required in the form of a syllabus for modern radiation oncology. The information will be useful to those preparing for professional certification exams in radiation oncology, medical physics, dosimetry or radiotherapy technology.