A Case Study of Assessing Button Bits Failure through Wavelet Transform Using Rock Drilling Induced Noise Signals
MetadataShow full item record
Finding the precise moment of button breakage of bits during drilling, with the experience of drill rig operators is a serious concern for modern vibrant mining industry. This research proposed a new methodology to find the failure of button using the sound generated by rock-bit interactions. The experiment is conducted by the video and sound data recorded during a drilling process in an underground mine, that uses a Sandvik AXERA7 twin boom jumbo drill rig and Polycrystalline diamond (PCD) tapered button bits. Signal analysis techniques such as Fourier transform and Wavelet transform are utilised to analyse the hectic noise signal recorded. The analysed results are shown that Wavelet Transform is much more effective in finding singularity points such as chipping or breakage of a button in compared to the Fourier Transform. The outcome of this analysis, which is the peak intensity at the breakage point, was correlated to the average intensity of the sound wave using moving average method. The results suggest that the noise generated during the drilling process can be used to detect the condition of the drill bit.
Showing items related by title, author, creator and subject.
Assessing the Condition of Rock Tools through Waveform Analysis Techniques of Rock Drilling Induced Vibration SignalsHettiarachchi, Don Sameera Wishwajith (2016)Detection of precise moment of button failure of a drill bit during a hard rock drilling process is vital to increase the efficiency in drilling. Sound generated during a hard rock drilling process was analysed using ...
Fisher, Steven J. (2002)Two case studies are described where partially biodegraded petroleum residues were collected from the marine environment and analysed to investigate the changes in aromatic hydrocarbons with increasing biodegradation.The ...
Schuster, A.; Buzzacott, Peter; Reif, S.; Kuch, B.; Gerges, A.; Azzopardi, E.; Sayer, M.; Sieber, A. (2014)© 2014 Society for Underwater Technology. All rights reserved. For optimal safety a dive computer should be easy to use and the displayed information easy to understand. The present study examines the usability of dive ...