Mohd Shihabudin Ismail
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Mohd Shihabudin Ismail
Official Name
Mohd Shihabudin , Ismail
Alternative Name
Ismail, Mohd Shihabudin
Ismail, M. S.
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Scopus Author ID
57210590291

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A Monte Carlo simulation for a variable-value stream mapping (V-VSM) and risk assessment - failure mode and effect analysis (RA-FMEA); a case study

2023 , Mohd Shihabudin Ismail , Mohamad Shaiful Ashrul Ishak , Muhammad Iqbal Muhammad Hussain

Value Stream Mapping (VSM) is one of the most used lean manufacturing methods for determining cycle time (CT) and lead time (LT) in the process flow from customer order to shipment. Value-added (VAA) and non-value added (NVAA) events in the flow must be defined and noted in the VSM. However, there are only a few studies that take risk management into account when calculating lead times. Variable VSM (V-VSM) will be used in this report, with (minimum, most-likely(mean), maximum) values for each CT/LT and Risk Assessment-Failure Mode and Effect Analysis (RA-FMEA) for all risks reported. For a more accurate result, the model will be simulated using Monte Carlo simulation with@Risk software. Prior to the simulation, each process must be described by the best-fit probability distribution. The (minimum, most-likely(mean), maximum) time values of total CT/LT and Risk that the management should consider when preparing the raw material order, VAA/NVAA activities in the production line, Work in Progress (WIP), process layout and shipment schedule are the results of this analysis. For management, the current and future VSMs could be finalized, displaying all relevant variables. This model will be tested in a small and medium food manufacturing facility that produces mixed powder drinks. However, the emphasis of this paper will be on the Monte Carlo simulation using@Risk software based on V-VSM and RA-FMEA model created.

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Fourier transform infrared spectroscopy of graphene nanoplatelets-glass and multi-walled carbon nanotubes-glass reinforced epoxy composite

2024-03-07 , Ahmad M.A.A. , Mohd Ridzuan Mohd Jamir , Mohd Shukry Abdul Majid , Cheng Ee Meng , Mohd Shihabudin Ismail

This study investigates the effect of nanofiller loading of graphene nanoplatelets and multi-walled carbon nanotubes on the characterisation of glass reinforced epoxy composite. The GNP-glass and MWCNT-glass composites were prepared using the hand lay-up and vacuum bagging method. The nanofiller weight fraction at 0.5, 1.5, 3, and 5 wt. % was being analysed. FTIR spectra were used to evaluate the GNP and MWCNT nanofiller's contribution to different crystalline formations in the epoxy matrix. The result indicates a variation peak in GNP-glass and MWCNT-glass reinforced epoxy composites due to nanofiller incorporation. The stretching vibration peak in the transmittance percentage was related to the better bond formation of the nanofiller with the epoxy matrix.

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Performance evaluation on locomotion system, body size and hull design on amphibious-based design of unmanned ground vehicle using Taguchi method

2023 , Mohd Iqhwan Izhar , Muhammad Shahar Jusoh , Rosmaini Ahmad , Mohd Shihabudin Ismail , Wan Nor Munirah Ariffin

Unmanned Ground Vehicle (UGV) is a robotic structured-based vehicle that operated on the ground but did not contain any human on board. It controlled either autonomously or remote controlled by a human operator from a distance. The operator observes the situation by using a camera that contains live feed that had been attached to the UGV. More advanced version of UGV is called "Autonomous UGV", where it controlled fully by sensors system. Thus, make this version of UGV highly reliable in replacing human for doing jobs in hazardous area or a place that is impossible for human to reach. This paper study the performance evaluation of UGV in term of their locomotion system, body size and hull design by using Taguchi method. The current UGV design under study is less flexible as it only operates on land. The objective of this study is to identify the optimal design parameters of the UGV towards amphibious functionality development. This study bridge the gap between engineering and management perspectives in reducing the time needed to perform testing on new design and reducing cost of experiment by using the Taguchi Method. The result shows that the ideal parameters design combination based on the signal-to-noise ratio calculated using the larger the better formula is the wheeled locomotion system with 350 X 250 X 200 dimension of body size and round-bottom shape of hull design.

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