AN EMPIRICAL STUDY OF ELF AND VLF SHIELD CANS,
Abstract
An empirical ELF and VLF study of 1/16- and 1/32-inch-thick shield cans (stainless steel, aluminum, copper, Polyform, annealed Hipernom, and annealed and unannealed cold-rolled steel, mumetal, and Co-Netic) was performed to investigate shielding effectiveness versus frequency characteristics with emphasis on the effects of machining (notches, slots, holes, and louvers), dropping, annealing, welding, and disk grinding. The erratic nature of many of the shielding functions is explained by the resonance theory of shielding, and the shielding characteristics of certain shield cans are compared. The report also presents a brief introduction to the automated testing system used during this study to obtain the numerous shielding effectiveness versus frequency curves that were required. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 23, 1967
- Accession Number
- AD0655644
Entities
People
- J. Ronald Moser
Organizations
- Navy Underwater Sound Laboratory