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Abstract:
A new
method of calculation the fractal dimensions of the rough surface by
wavelets transform is proposed. Based on the Weierstrass-Mandelbrot
function and Majumdar-Bhushan function with known fractal dimension, it
is validated that this method can calculate quite accurately the fractal
dimension The fractal characterizations of the test surfaces for pool
nuclear boiling experiment are evaluated by wavelets transform, the test
panels are machined 5 scales roughness by rolling, sandpaper polishing
and machine polishing in copper and stainless steel. The calculation
results indicate the wavelets transform method is availability.
Key words:
Wavelets
transform Surface topography Fractal dimension
CLC No: TH161.14
国家自然科学基金、中科院力学所非线性力学国家重点实验室资助项目. Received 20000829,
received in revised form 20010212
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