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Description
The ultimate objective of this project has been to develop a non destructive and surface evaluation on-line system for the determination of localised power loss in electrical steels.Three different approaches were made by employing three different methods or measuring systems on steel samples to study sequentially:
(1) the position of a grain boundary from both the front and the exact opposite side at the back of the grain-oriented electrical steel sample,
(2) the position of grain boundaries at the surface of grain-oriented electrical steels through the measurement of the field distribution at the surface of the magnetised steel samples, and
(3) the localised power loss in 3.25% grain-oriented electrical steels.
In the first case, a computer based optical microscope and a 3-Chip colour video camera system was used to establish positions of grain boundaries in order to explain differences in field profiles outside the systematic accuracy of measurements.
Content:-
ABSTRACT
CHAPTER ONE: INTRODUCTION
CHAPTER TWO: BACKGROUND
CHAPTER THREE: CONCEPTS OF POWER LOSS
CHAPTER FOUR: METHODS FOR THE DETECTION OF SURFACE FIELDS ON ELECTRICAL STEELS.
CHAPTER FIVE: INVESTIGATION INTO GRAIN BOUNDARIES OF GRAIN ORIENTED SILICON IRON.
CHAPTER SIX: OBSERVATION OF DOMAIN / GRAIN BOUNDARIES USING MAGNETIC FORCE MICROSCOPY.
CHAPTER SEVEN: DESIGN AND DEVELOPMENT OF POWER LOSS SYSTEM.
CHAPTER EIGHT: RESULTS AND DISCUSSION
CHAPTER NINE: CONCLUSION AND FUTURE WORK
Author Details
"Sam Nyamekye K onadu B. Eng, MSc."
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