NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Generalized pulse equations for through-transmission evaluation of arbitrary multilayered structuresGeneralized transit time and pulse amplitude equations were derived for modelling the ultrasonic through-transmission wave propagation of an arbitrary n-layered structure. The equations can be programmed into an expert system and used to identify and predict the through-transmission pulse signals from the critical interfaces of a multilayered structure. To test the formulas, the through transmission was measured from one- and three-layered configurations in the laboratory. The experimental measurements were compared with computer-generated data determined using the derived equations. The results verify the validity of the formulas.
Document ID
19900008091
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Chern, E. James (NASA Goddard Space Flight Center Greenbelt, MD., United States)
Nielsen, Hatsumi T. C. (Stanford Univ. CA., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Acoustics
Report/Patent Number
NAS 1.15:100752
NASA-TM-100752
REPT-90B00056
Accession Number
90N17407
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available