Ngui Wai Keng

Ngui Wai Keng
Universiti Malaysia Pahang | ump · Faculty of Mechanical Engineering

PhD

About

21
Publications
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214
Citations
Introduction
Ngui Wai Keng currently works at the Faculty of Mechanical Engineering, Universiti Malaysia Pahang. Ngui does research in Mechanical Engineering.

Publications

Publications (21)
Article
Full-text available
. Wavelet analysis, being a popular time-frequency analysis method has been applied in various fields to analyze a wide range of signals covering biological signals, vibration signals, acoustic and ultrasonic signals, to name a few. With the capability to provide both time and frequency domains information, wavelet analysis is mainly for time-frequ...
Article
Turbines are significant for extracting energy for petrochemical plants, power generation, and aerospace industries. However, it has been reported that turbine-blade failures are the most common causes of machinery breakdown. Therefore, numerous analyses have been performed to formulate techniques for detecting and classifying the fault of the turb...
Chapter
Full-text available
Vibration-based signal processing is the most popular and effective approach for fault diagnosis of bearing. In this paper, timefrequency domain analysis, i.e. empirical mode decomposition (EMD) was applied to the raw vibration signal. Intrinsic mode function (IMF) containing the characteristics of vibration data was analysed to obtain 90 statistic...
Article
Full-text available
Rotating machinery is one of the major components of industries that suffer from various faults due to the constant workload. Therefore, a fast and reliable fault diagnosis method is essential for machine condition monitoring. In this study, noise eliminated ensemble empirical mode decomposition (NEEEMD) was used for fault feature extraction. A con...
Article
Performance Ratio (PR) is one of the best performance metrics used to assess solar power plant performance. PR is also used for commercial acceptance of an installed PV power plants. If the PR is tested in different climatic conditions or seasons, there are bias errors, affecting the contractual acceptance testing. PR is often corrected to the Stan...
Preprint
Time-series data are one of the fundamental types of raw data representation used in data-driven techniques. In machine condition monitoring, time-series vibration data are overly used in data mining for deep neural networks. Typically, vibration data is converted into images for classification using Deep Neural Networks (DNNs), and scalograms are...
Article
Full-text available
PurposeAlthough noise-assisted decomposition methods, ensemble empirical mode decomposition (EEMD) and complementary EEMD (CEEMD) can reduce the drawbacks of empirical mode decomposition (EMD), they cannot fully eliminate the presence of white noise. Moreover, they require large number of ensembles for a desired output which takes much computationa...
Article
Full-text available
Solar photovoltaics and the associated applications are now considered the most promising technologies for a sustainable future. The performance of the PV power plants is not studied in detail with respect to the influence of various weather parameters like rain, relative humidity, and atmospheric pressure on energy generation. The objective of thi...
Article
Full-text available
3D printing is an emerging technology to construct complex geometry by adapting layer-by-layer addition technique from a 3-dimensional CAD model. Mass customization, freedom of design, and wastage minimization are the main advantages of Additive Manufacturing (AM) based 3D printing. 3D printing is currently used in many sectors worldwide, such as a...
Article
Full-text available
The State of Kerala in Southern part of India has significant potential for generation of power from renewable energy sources, especially solar energy. Most of the PV projects in the State are being implemented on roof-tops due to the unavailability of land area in the densely populated State for large utility scale PV power plants. The concept of...
Article
Full-text available
The pipeline is used as a medium of transportation in global gas and oil industries, providing the most efficient, convenient and transportation method for natural gas and oil from downstream to upstream production of the economical mode of the power station, refineries, and domestic needs. However, the pipeline leakages become a major concern as t...
Article
Full-text available
A University campus becoming self-reliant in terms of electricity generation is always important. The power requirement of a University campus is mainly for its academic blocks for different departments. The laboratories, libraries, and hostel facilities also require continuous power needs. Conventionally, the electricity needs are met utilizing th...
Article
Template-assisted electrochemical deposition is a straight forward approach for the synthesis of 1D nanostructures (e.g., nanowire, nanorod, and nanobelt) with controllable morphology. This approach is suitable for mass production as it works at ambient pressure and temperature with the properties of synthesized 1D nanostructures being influenced b...
Article
Full-text available
Blade fault diagnosis had become more significant and impactful for rotating machinery operators in the industry. Many works had been carried out using different signal processing techniques and artificial intelligence approaches for blade fault diagnosis. Frequency and wavelet based features are usually used as the input to the artificial neural n...
Article
Full-text available
This article aims to provide a comprehensive review on the condition monitoring techniques of underground storage tanks (UST). Generally, the UST has long been a favourite toxic substance reservation apparatus, thanks to its large capacity and minimum floor space requirement. Recently, attention has been drawn to the safety risks of the complex cyl...
Article
Full-text available
This paper reviews the recent progress and applications of nanoparticles in lubricants as a coolant (cutting fluid) for grinding process. The role of grinding machining in manufacturing and the importance of lubrication fluids during material removal are discussed. In grinding process, coolants are used to improve the surface finish, wheel wear, fl...
Article
Full-text available
Fourier and wavelet analysis of vibration signals are the two most commonly used techniques for blade faults diagnosis in turbo-machinery. However, blade faults diagnosis based on visual comparison of vibration spectrum and wavelet maps are very subjective as it required experiences and knowledge to interpret the results. To overcome these challeng...
Article
Blade faults detection under field conditions is often conducted using vibration spectrum analysis. However, this method is inherently less effective for blade faults diagnosis and classification due to information loss during signal transformation. This paper intents to explore more detailed vibration analysis methods to address this shortfall. A...
Article
Full-text available
This paper studies the detection of twisted blade in a multi stages rotor system. Experimental study was undertaken to simulate twisted blade conditions in a three stages rotor system. The feasibility of vibration analysis as the technique to detect twisted blade based on the rotor operating frequency and its blade passing frequency was investigate...
Article
Full-text available
Application of Fast Fourier Transform (FFT) in machinery faults detection is known to be only effective if fault is of repetitive in nature and considering severe. While minor and transient faults are usually remain undetected based on vibration spectrum analysis. Wavelet analysis is relatively new technique which is still suffered from inadequatel...
Article
Rubbing is one of the most common faults that occurs in rotating machinery. This paper studies the vibration responses of a rotor system under the influence of blade induced rubbing. An experimental study was undertaken to simulate various conditions of rubbing in rotor system caused by rotating blades and its corresponding vibration responses are...

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Project
1.Main topics This special issue is dedicated to a set of best papers in the field of Sustainable Energy development. Full papers will be subject to a strict review procedure for final selection to this special issue based on the following criteria: Application of Green Energy and Systems Ocean/Tidal/Wind/Solar/Geothermal Energy Conversion Hydrogen & Fuel Cells New Trends and Technologies for GESs Policies and Strategies for GESs Performance Analysis of GESs Green Energy Systems in Smart Cities Green Energy Generation Green Energy storage Green Energy Transmission and Distribution Biomass, Bio-Fuel as Green Energy Green energy materials including Nano fluids Green Buildings Green Energy Management and Control Future Challenges and Directions for Green Energy 2. Review of papers All the papers submitted to the special issue will be reviewed by following standard procedure of “Open Fuels and Energy Science Journal” and will be reviewed by external referee’s. Full papers will be subject to a strict review procedure for final selection to this special issue based on the novelty and significance. 3. Submission deadline Submission of papers: 15 November, 2017 Notification of review results: 1 December , 2017 Submission of revised papers: 15 December, 2017 Publication online : 30 December,2017
Project
Dear Colleagues, A Special Session on “ Green Energy Technologies and Application” will be organized during the Cambridge Summit -2018 which is going to be held at University of Cambridge –UK from Jan 4-6,2018 The paper can be submitted directly to the undersign for peer-review and acceptance in Elsevier Journals. Indian presenters are likely to get special discounts for air ticket . 1. Aims and Scope This special session will provide a systematic overview and discuss the state-of-the-art research in the field of Advances in Sustainable Energy and Application, and will outline new developments in fundamental, approaches, methodologies, software modelling, and applications in this area. 2. Main topics This special issue is dedicated to a set of best papers in the field of Sustainable Energy development. Full papers will be subject to a strict review procedure for final selection to this special issue based on the following criteria: Application of Green Energy and Systems Ocean/Tidal/Wind/Solar/Geothermal Energy Conversion Hydrogen & Fuel Cells New Trends and Technologies for GESs Policies and Strategies for GESs Performance Analysis of GESs Green Energy Systems in Smart Cities Green Energy Generation Green Energy storage Green Energy Transmission and Distribution 2 Biomass, Bio-Fuel as Green Energy Green energy materials including Nano fluids Green Buildings Green Energy Management and Control Future Challenges and Directions for Green Energy 3. Expected volume of manuscripts: 10 High quality Papers will be selected from different countries Malaysia, India, Indonesia, USA, Germany, Vietnam, Turkey and Japan. Around 20 submissions are expected for the special session. Deadline of Submission Submission Deadline - September 15, 2017 Accept/Reject Notification – September 20, 2017 Conference Registration due - October 15, 2017 Registration Fee Registration Type SAARC Delegates Foreign Delegates Faculty Members / Scientists / Industry experts INR 25000 500USD / 400GBP Students INR 15000 300USD / 240GBP Registration Fee includes Conference Kit, Snacks, and Standing Lunch Buffet. For accompanying person, kindly contact us :cambridgesummit2018@vit.ac.in.10% discount for Early Bird Registration before October 15, 2017 Publication opportunity: Presented papers will be published in the following journals (more Journals will be added). The organizers will contact authors before sending the papers to journals. Publisher: Elsevier Computers and Electrical Engineering (https://www.journals.elsevier.com/computers-and- electrical-engineering) Publisher: Inderscience International Journal of Information Technology and Management (www.inderscience.com/ijitm) International Journal of Global Energy Issues (www.inderscience.com/ojgei) International Journal of Health Care Technology and Management (www.inderscience.com/ijhtm) International Journal of Environmental Technology and Management (www.inderscience.com/ijetm) International Journal of Risk Assessment and Management (www.inderscience.com/ijram) Publisher: IET, Digital Library The Journal of Engineering* (http://digital-library.theiet.org/content/journals/joe) Publisher: Taylor’s University, Malaysia Journal of Engineering Science and Technology* (http://jestec.taylors.edu.my) Publisher: American Scientific Publishers Advanced Science Letters* (www.aspbs.com/science) Journal of Computational and Theoretical Nanoscience*www.aspbs.com/ctn) Advanced Science, Engineering and Medicine www.aspbs.com/asem) * extended work and processing fee applicable Author Guidelines Submission Full Text Manuscripts with abstract of about 150 words should be submitted by one of the corresponding authors of the manuscript by mail to sudhakar@ump.edu.my . Original file in one of the (.doc, .rtf, ps, pdf) style files with figures, images, tables, etc., embedded into the original file. All manuscripts must be in English, single spaced (including footnotes, References, Tables, Legends) in A4 size leaving one inch margin. Page limit of the manuscript is 8 including figures, Tables and References. All papers must include a title, complete contact information for all authors, and keywords on the cover page. Kind Regards , Dr. K.Sudhakar , Special Session Chair: Cambridge Summit 2018,Jan 4-6,2018 University of Cambridge,UK Senior Lecturer, Faculty of Mechanical Engineering Universiti Malaysia, Pahang, Pekan,26600, Malaysia .Mob: Email: sudhakar@ump.edu.my and nittsudhakar@gmail.com http://info.vit.ac.in/cambridgesummit2018/index.asp http://info.vit.ac.in/cambridgesummit2018/callforsession.asp .