Failure Modes of Laminate Structures

Laminate structures composed of alternating thin layers of conductor and dielectric material are commonly used in energy storage and transmission components. The failure of the dielectric layers in regions of high field stress, with applied 60 Hz ac, de and impulse voltages, was studied. Several geo...

Full description

Saved in:
Bibliographic Details
Main Authors: Gordon, L B, Druce, R L, Wilson, M J
Format: Report
Language:English
Subjects:
ALTERNATING CURRENT
DIELECTRICS
DIRECT CURRENT
ELECTRIC FIELDS
Electricity and Magnetism
ELECTRODES
ENERGY DENSITY
Energy Storage
LAMINATES
Laminates and Composite Materials
STRESSES
THERMAL STRESSES
VOLTAGE
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Laminate structures composed of alternating thin layers of conductor and dielectric material are commonly used in energy storage and transmission components. The failure of the dielectric layers in regions of high field stress, with applied 60 Hz ac, de and impulse voltages, was studied. Several geometries were compared, including staggered and fiush edges. Electrical trees developed between the laminated dielectric layers. The visual characteristics and growth rates of the electrical trees under ac, de and impulse stresses were different. Partial discharge detection and analysis was used to measure the inception voltage and discharge activity at the conductor edge voids, to observe tree formation and growth, and to predict impending failure due to dielectric erosion. Electric field distributions were modeled and partial discharge inception levels were estimated from known void geometries. The staggered edge geometry appears to enhance the electric field stress at the recessed electrode. See also ADM002371. Published in 2013 IEEE Pulsed Power Conference, Digest of Technical Papers 1976-2013, and Abstracts. Presented at the 2013 IEEE International Conference on Plasma Science Held in San Francisco, CA on 16-21 June 2013. U.S. Government or Federal Purpose Rights License