Study of vibration on defects in cordless impact hand drill using statistical analysis method

Adenan, Nur Solihah (2023) Study of vibration on defects in cordless impact hand drill using statistical analysis method. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Vibration analysis used in condition monitoring allows for the detection and identification of defective rotating machine parts. As a result, reliability is increased while maintenance costs are decreased and safety is improved. Numerous prior studies on condition monitoring using vibration analysis of bearing, gear, and shaft are revealed by the literature review. One of the most popular techniques for condition monitoring is vibration signal analysis (VSA), which allows for the early detection of both the type and severity of defects, hence lowering the risk of failure. The analysis of the cordless impact wrench's vibration signal will be done in this study. The cordless impact handrill itself vibrates at a natural frequency, but because of its defects, the excessive vibration it causes will make using it uncomfortable and affect the quality of the work. A study on it can therefore help to comprehend the vibration signal's nature. The data acquisition (DAQ) device and accelerometer transducer will be used in this study to record the vibration signal. The needed vibration signal will then be extracted from the time domain spectrum using MATLAB and Microsoft Excel once the data has been filtered and processed. Therefore, based on the normal and abnormal situation, statistical data, such as root mean square (RMS), presented in the form of a graph, can be compared. If there are any defects in the cordless impact drill, the vibration spectrum of the frequency domain from normal and abnormal conditions can be evaluated to investigate and compare the pattern of the spectrum.

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