Ahmad Faizal Annuar
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Ahmad Faizal Annuar
Official Name
Ahmad Faizal, Annuar
Alternative Name
Annuar, Ahmad Faizal
Annuar, A. F.
Faizal, Annuar Ahmad
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Scopus Author ID
56380453900
Researcher ID
ELV-3781-2022

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Review of big data application in smart manufacturing

2023-07-19 , Ahmad Faizal Annuar , Ab-Samat H. , Norfadila Mahrom

This paper reviews the application of big data in smart manufacturing. Currently, the application of big data into the manufacturing operation is still a premature undertaking, with cost, compatibility, and lack of expertise hindering decision-making for many organizations. The selected papers discuss a variety of situations in which big data analytics and its applications have been used to enhance decision-making in the manufacturing operations, productions, scheduling, quality assurance, maintenance, and sustainability with significant data analytics considerations, obstacles to extensive data analytics adoption, machine learning, and use of sensors for data extraction. This article presents the discussions in the manufacturing industry surrounding the use of big data analytics.

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Fracture mechanic analysis of multiple edge cracks in a finite plate using kerf to emulate crack interaction

2015 , Ahmad Faizal Annuar

Multiple cracks with different or similar geometries that coexist on the same plane will affect its neighbouring counterpart’s Stress Intensity Factor (SIF) value due to interaction effect. The interaction effect is much related to the change of stress distribution profile that produced by neighbouring crack. The study had been proven true over the past years through various Finite Element Analysis FEA software packages and formulation, but an actual experiment and raw data acquisition is rather scarce in literature. This could well mean that the process to prepare multiple cracks study is hard to emulate physically as oppose to single crack study. The main intention of this study attempts to simulate and find a possibility to replace subsequent crack interaction to primary crack with kerf, incise in Electric Discharge Machining (WEDM) wire cut, by evaluating the longitudinal stress distribution component. Current regional technology of WEDM permits kerf gap machining at 0.050mm. This research, focuses on emulating two parallel edge cracks’ interaction as initial attempt to prove that kerf provides similar interaction on primary crack’s SIF. Through simulation using ABAQUS Computer Aided Engineering (CAE), values of non-uniform stress distributions produced by kerf within the potential primary crack region was analysed and compared to non-uniform stress distributions that produced by a crack as validation. Absolute error tabulation of stress distribution that produced by kerf suggests that it is fit to replace subsequent crack for further study of interaction in multiple cracks. A nonconventional method to determine Normalised SIF of crack, 𝑌𝑎 , using Multiple Reference State (MRS) Weight Function was chosen given its capability in complex computation of crack geometries that includes non-uniform stress distribution values in finite bodies. The 𝑌𝑎 values from FEA models of double edge cracks which were used as reference points exhibits decent agreement with data trend line from those conceived by MRS Weight Function Method. Experiments are carried out with three (3) specimens, made from Aluminium Alloy 6063 T6, which contains a crack, a, at varying length and 10mm kerf, b, each at similar edge surface at similar separation of 10mm to observe further growth of crack under presence of kerf. The three conditions of the specimens are designed as followed; i) a≈b, ii) a=1.5b, and iii) a=2b. This is to highlight the existence of interaction between crack and kerf under circumstance where primary crack at different conditions attempts to grow under loading. This research contributes the knowledge of kerf’s non-uniform stress distribution trend under tension loading and its influence to primary crack’s growth in which the results are comparable to those produced by subsequent crack. The study of kerf in this research is significant as it disclose characteristic of kerf and crack interaction and allows anticipation in the events structural failure for engineers and research in order to avoid potential disasters.

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Perturbation parameters tuning of multi-objective optimization differential evolution and its application to dynamic system modeling

2015 , Mohd Zakimi Zakaria , Hishamuddin Jamaluddin , Robiah Ahmad , Azmi Harun , Radhwan Hussin , Ahmad Nabil Mohd Khalil , Muhammad Khairy Md Naim , Ahmad Faizal Annuar

This paper presents perturbation parameters for tuning of multi-objective optimization differential evolution and its application to dynamic system modeling. The perturbation of the proposed algorithm was composed of crossover and mutation operators.  Initially, a set of parameter values was tuned vigorously by executing multiple runs of algorithm for each proposed parameter variation. A set of values for crossover and mutation rates were proposed in executing the algorithm for model structure selection in dynamic system modeling. The model structure selection was one of the procedures in the system identification technique. Most researchers focused on the problem in selecting the parsimony model as the best represented the dynamic systems. Therefore, this problem needed two objective functions to overcome it, i.e. minimum predictive error and model complexity.  One of the main problems in identification of dynamic systems is to select the minimal model from the huge possible models that need to be considered. Hence, the important concepts in selecting good and adequate model used in the proposed algorithm were elaborated, including the implementation of the algorithm for modeling dynamic systems. Besides, the results showed that multi-objective optimization differential evolution performed better with tuned perturbation parameters.

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Feasibility study of wave energy converter using compressed air to generate electricity

2021-01-01 , Najmuddin W.S.W.A. , Mohammad Taufiq Mustaffa , Muhamad Saifuldin Abdul Manan , Ahmad Faizal Annuar , Atikah Haji Awang @ Haji Mohd Ramli , Azzeri M.N.

Wave energy is one of the promising resources for harnessing a vast amount of renewable energy. Wave energy converter is being defined by a particular design and the power take-off system which signify the mechanism of absorbing the wave energy and convert it into electricity. Addressing the significant potential of wave energy, the wave converter using a pneumatic system and compressed air as energy storage is designed and fabricated. The concept is presented and tested in the wave maker to analyze the performance of the prototype. This project aims to study the capabilities of small-scale, low cost and portable wave energy converter using compressed air to generate power. In this project, an experiment is conducted using the force of wave to generate linear motion of double acting cylinder that specifically creates compressed air in a small-scale tank. From the experiment, it is observed that the wave energy able to compressed air at pressure up to 0.5 bar. Then, the compressed air which is stored in the storage tank is released and it flows through water turbine that works as a generator to produce a power output of 18 V. The feasibility study reveals that the experiment able to harness electricity using low equipment tool. Further improvement of the design can increase the efficiency of the pneumatic generated system and able to generate an electric power.

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Design of a drag and lift type blade for power generation via air turbine

2021-01-01 , Najmuddin W.S.W.A. , Mohammad Taufiq Mustaffa , Muhamad Saifuldin Abdul Manan , Ahmad Faizal Annuar , Atikah Haji Awang @ Haji Mohd Ramli

Compressed air is a vital medium for transferring energy in industrial processes. Compressors are efficient and reliable in meeting need and demand, especially in the industry while at the same time helping to reduce carbon footprint. However, there are several constraints using an air turbine as an operational element in generating electricity from compressed air. One of the key factors involved is the design of a blade that capable to increase the performance of the turbine and electricity generation from compressed air. Thus, this paper objectives are to develop a proposed design of a drag and lift type blade design and to evaluate the power generate that able to be harnessed from the force of the air. Additionally, the power coefficient that is harnessed from the generator using these new designs of blade also evaluated. In the experiment, the model is set up using the proposed concept of Savonius and Darrieus typed in order to generate electricity for small power equipment. Results show that these blade designs able to generate of 21-v for Savonius whereas 24-v for Darrieus from 0.3 MPa input source. Based on the result of an experiment, this study reveals that both type of blade design able to generate electricity constantly however, the performance of Darrieus vertical axis blade design is better compared to Savonius vertical axis blade design.

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