Electrical ageing

The electrical age was built on the discovery in the early 1830s, independently by Joseph Henry (1797-1878) in America and Michael Faraday (1791-1867) in England, of electromagnetic induction, which led directly to the invention of the dynamo to generate electricity from steam-powered rotation. It came to fruition on New Year s Eve, 1879, when Thomas Edison (1847-1931) in rural New Jersey, after systematic and exhaustive experiments, made the first successful incandescent lamp, employing a carbonised filament made from some thread taken from Mrs. Edison s sewing cabinet. The lamp burned undimmed for 40 h, watched anxiously by Edison and some of his numerous collaborators. This lamp was ideal for... 

Fig. 10.3.9 Spin diffusion in LDPE. (a) Spin-diffusion curves showing the decay of magnetization in the mobile chain segments as a function of distance across the sample. The symbols I and II mark the regions unaffected and affected by the electrical ageing process, respectively, (b) Representative magnetization decays from regions I and II. Their different shapes indicate different morphologies. Dots experimental values. Solid lines Simulations.

Electrical tests were conducted to evaluate the effect of electrical stresses on the molecular weight distribution of polyethylene. The electrical stress apparatus discussed previously was used to electrically age polyethylene at room... 

Kondakov D Y, Sandifer J R, Tang C W, and Young R H, Nonradiative recombination centers and electrical aging of organic light-emitting diodes direct connection between accumulation of trapped charge and luminance loss, /. Appl. Fhys., 93... 

Fig. 5.16. Imaging polymer morphology by spin-diffusion contrast on a sample of electrically aged polyethylene, (a) Sample for electrical aging in needle-plate geometry and region cut out for spin diffusion imaging with one-dimensional spatial resolution, (b) Spatially resolved distribution of the domain sizes derived from fitting theoretical diffusion curves of a sandwich layer model to the experimental data. Pronounced changes in the thickness for crystalline, interfacial and amorphous layers are obtained [58].

Dissado, L. A., G. Mazzanti and G.C. Montanari. 1997. The role of trapped space charges in the electrical aging of insulating materials. IEEE Trans Electr Insul 4 496-506. 

Conjugated polymer/molten salt blends The relationship between morphology and electrical aging. 

Wang, Q., Luo, Y., and Aziz, H. (2010) Evidence of intermolecular species formation with electrical aging in anthracene-based blue organic light-emitting devices./. Appl. Phys., 107, 084506-1-084506-6. 

Bunch, B. H., and A. Hellemans. 1993. The Timetables of Technology A Chronology of the Most Important People and Events in the History of Technology. New York Simon Schuster. This work devoted to the history of technology is divided into seven time frames the Stone Ages (2,400,000-4000 BCE), the Metal Ages (4000 BCE-1000 CE), the Age of Water and Wind (1000-1732), the Industrial Revolution (1733-1878), the Electric Age (1879-1946), the Electronic Age (1947-1972), and the Information Age (1973-1993). Included are a name index and a subject index. 

Bietzlaff, R.S. Sandlin, SX. Fourier Transom Infrared Spectroscopic Study of Thermal and Electrical Aging in Polyurethane, SD-TR-87-04 The Aero ace Corporation, March 20,1987. 

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