Experimental verification of theoretical stress predictions in wound capacitors

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5817167

Reuter, Jr, R C; Guess, T R

Residual stress states that are a direct result of fabrication and processing are known to exist inside wound capacitors. Considerable insights into the nature of these mechanical and thermomechanical stress states have been gained through the application of analytical prediction capabilities that have been developed for that purpose. For example, analysis shows where roll slip may occur in the capacitor due to steep wound tension gradients or low radial pressures, and how the tension loss of individual plies is distributed throughout the capacitor. Significant tension loss differences between dielectric and conducting plies has also been predicted, with conducting plies not only losing their initial winding tension, but actually experiencing a net compressive value of wound tension. While the results of these predictions are both quantitative and qualitative, only qualitative verification has been obtained thus far, such as visual observation of wrinkled conducting plies discovered in unwrapped capacitors. The purpose of this paper is to describe two experimental activities that were undertaken to support the analytical modeling effort and provide quantitative, experimental verification of some of the analysis predictions.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5817167
• Report Number(s): SAND-91-2293C; CONF-920372--3; ON: DE92006555
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
426000* -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
CAPACITORS
DATA
DESIGN
DIELECTRIC MATERIALS
ELECTRIC CONDUCTORS
ELECTRICAL EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
INFORMATION
LAYERS
MATERIALS
NUMERICAL DATA
NUMERICAL SOLUTION
STRAINS
STRESS ANALYSIS
STRESSES