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Showing result 1 - 5 of 94 swedish dissertations matching the above criteria.
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1. Positional Accuracy of Drilled Holes
Abstract : When selecting hole-making sequences, the positional accuracy mainly is determined during the first drilling operation. This dissertation consists of three papers which consider the influence of various factors on hole positional accuracy when drilling in inclined workpieces using high-speed steel twist drills with conventional point geometry. READ MORE
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2. Noise radiation from drill steels : and other experimental investigations in acoustics and fluid mechanics
Abstract : Drill rod noise has become a major noise source in percussive drilling. Generation of flexural waves, which seem to be responsible for most of the noise, is studied in a model with dynamic photoelasticity and in the real drill rod with strain gauge technique. READ MORE
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3. Assessment of rock mass quality and its effects on charge ability using drill monitoring technique
Abstract : For an efficient mining operation, it is essential to have as much information as possible aboutthe ore to be excavated and the rock masses surrounding the ore. Geological information andthe content and distribution of extractable minerals, are central concerns for long term mineplanning. READ MORE
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4. Dissipation in drill rod joints
Abstract : .... READ MORE
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5. Drill process monitoring in percussive drilling : a multivariate approach to data analysis
Abstract : .... READ MORE