Mohd. Hazwan Mohd. Hanid
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Preferred name
Mohd. Hazwan Mohd. Hanid
Official Name
Mohd. Hazwan, Mohd. Hanid
Alternative Name
Mohd Hanid, Mohd Hazwan
Hanid, M. H.M.
Hanid, Mohd Hazwan Mohd
Main Affiliation
Scopus Author ID
57193312815
Researcher ID
CTT-1309-2022

Research Output

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Application of response surface methodology (RSM) and genetic algorithm in minimizing warpage on side arm

2017-09-26 , Raimee N.A. , Mohd Fathullah Ghazli@Ghazali , Shayfull Zamree Abd. Rahim , Mohd. Nasir Mat Saad , Mohd. Hazwan Mohd. Hanid

The plastic injection moulding process produces large numbers of parts of high quality with great accuracy and quickly. It has widely used for production of plastic part with various shapes and geometries. Side arm is one of the product using injection moulding to manufacture it. However, there are some difficulties in adjusting the parameter variables which are mould temperature, melt temperature, packing pressure, packing time and cooling time as there are warpage happen at the tip part of side arm. Therefore, the work reported herein is about minimizing warpage on side arm product by optimizing the process parameter using Response Surface Methodology (RSM) and with additional artificial intelligence (AI) method which is Genetic Algorithm (GA).

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Characteristics on air flow distribution via spiral blade distributor in a swirling fluidized bed

2020 , Muhammad Lutfi Abd. Latif , Mohd Al-Hafiz Mohd Nawi , Mohd. Hazwan Mohd. Hanid , Mohd Razman Amin , Ku Mohammad Yazid Ku Ibrahim , Hazizul Hussein

Swirling Fluidized Bed (SFB) is a new method which is very useful in drying process especially in mineral processing. By designing the annular blade distributor inclined, the gas will pass through the distributor, then certainly achieve suitable performance in term of fluidization. Numerical simulation such as Computational Fluid Dynamics (CFD) has been widely used to investigate the parameters that influence the system itself. The current study focused on the spiral blade distributor with various pitch length (60mm, 80mm, and 100mm), and various horizontal inclination angle (0°, 12° and 15°). The CFD is used to compute and btain the velocity distribution data, as well as tangential velocity. The uniformity of tangential velocity distribution are the crucial investigation as this will be used to determine the optimum SFB systems. Effect of low blades inclination angle (0°) and low pitch length (60mm) has showed the most significant finding in this study.

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Modification of the design of circular thin-walled tubes to enhance dynamic energy absorption characteristics: experimental and finite element analysis

2020 , Masniezam Ahmad , Khairul Azwan Ismail , Mohd. Hazwan Mohd. Hanid , Fauziah Che Mat , A M Roslan

A thin-walled tube is an energy absorber device that functions to dissipate kinetic energy into another form of energy during impact. The design of thin-walled tubes is a significant factor which affects to the energy absorption characteristics. This paper provides a comparative study between the original thin-walled tube designs and several modified tube designs that have been proposed. The main objective is to improve the energy absorption characteristics, such as energy absorption capacity, initial peak load, specific energy absorption (SEA) and crush force efficiency (CFE). Throughout this research, aluminium alloy AA6061-T6 has been used as the material for all tubes. For comparison, all of the tubes are developed with a circular shape with the same diameter, thickness and length. In addition, they are also impacted at the same kinetic energy under dynamic axial loading. Validated LS-DYNA finite element (FE) models have been used to simulate the impact of the thin-walled tubes. Compared to the original tube design, the modified tubes have improved energy absorption characteristics. A conical tube with a flat end cap was identified as the best performing tube among the modified tubes because it had the lowest initial peak load, a moderate energy absorption capacity and an excellent CFE and SEA. The findings from this study can be used as a guidance in designing thin-walled structure.

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Warpage optimisation on front panel housing using straight drilled and conformal cooling channels in injection moulding process

2018 , Mohd. Hazwan Mohd. Hanid

Nowadays, there are various optimisation methods that have been explored by researchers to determine the appropriate setting of processing parameters in the injection moulding process. Based on previous researches, the use of optimisation works has improved the quality of the moulded part produced. Apart from quality, the productivity in the injection moulding process also plays an important role. Therefore, some researchers and manufacturers have introduced the application of conformal cooling channels in injection process which have been proven to improve the quality and productivity of the moulded part due to better uniformity of temperature distribution in the mould as compared to the conventional straight drilled cooling channels. However, the application of optimisation techniques to determine an appropriate setting of processing parameters in previous researches were mainly focused on the conventional straight drilled cooling channels, whereas in conformal cooling channels is still lacking due to the difficulties in mould fabrication. In this study, the application of optimisation technique to improve the warpage on the front panel housing using the conventional straight drilled and Milled Groove Square Shape (MGSS) conformal cooling channels was explored. Simulation studies using Autodesk Moldflow Insight (AMI) 2013 software were conducted to obtain the recommended processing parameters for both types of channels. Then, by selecting cooling time, coolant temperature, packing pressure and melt temperature as the variable parameters, Design of Experiment (DOE) has been constructed using the face-centered, Central Composite Design (CCD) approach. Response Surface Methodology (RSM) was performed to develop mathematical models to employing Glowworm Swarm Optimisation (GSO) and Genetic Algorithm (GA) optimisation approaches in order to determine the appropriate setting of the processing parameters to optimise the warpage defect. Results from experimental works showed that, the performance of MGSS conformal cooling channels is remarkably improved in terms of quality and productivity compared to the straight drilled cooling channels before and after optimisation. GA offers the lowest warpage value, followed by RSM and then GSO for both types of channels. The warpage on the front panel housing was improved by 32.5% (from 0.375 mm to 0.253 mm) and 22.9% (from 0.205 mm to 0.158 mm) using straight drilled and MGSS conformal cooling channels respectively after optimisation using GA, compared to the recommended setting suggested from simulation studies. Next, it was followed by an RSM approach with the improvement of 30.7% and 22% using straight drilled and MGSS conformal cooling channels respectively as compared to the recommended setting suggested from simulation studies. Lastly, the result using GSO approach showed an improvement of 18.7% and 7.3% using straight drilled and MGSS conformal cooling channels respectively when compared to the recommended setting suggested from simulation studies. Therefore, it can be suggested that, this research provides beneficial scientific knowledge and alternative solution for plastic injection moulding industries to enhance the quality of the moulded parts produced using optimisation techniques.

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Energy absorption characteristics of corrugated grooves thin-walled structure inspired by nautilus shell biological geometry

2025-01 , Mohd. Hazwan Mohd. Hanid , Safian Sharif , Masniezam Ahmad , Mohd Azlan Suhaimi , Khairul Azwan Ismail , Muhammad Syamil Zakaria

Crash box is a vital component for a vehicle in absorbing kinetic energy in the event of a road collision. The thin-walled structure is emerging as a favorable geometry in designing the crash box. This article investigates the energy absorption performance of the corrugated nautilus shell bio-inspired thin-walled structure made of AA6061-T6 aluminum alloy. This structure’s performance was evaluated using finite element analysis (FEA) under quasi-static and dynamic loading conditions in an axial direction, then validated by a quasi-static compression experimental test, which showed satisfactory agreement. The results show that the corrugated nautilus shell bio-inspired thin-walled structure integrated with corrugated grooves reduced peak crushing force (PCF) by 17.9% and increased specific energy absorption (SEA) by 1.3% and crush force efficiency (CFE) by 17.6% compared to non-corrugated design. It can be concluded that the proposed nautilus shell bio-inspired thin-walled structure integrated with corrugated grooves has the potential to replace conventional hollow square designs in vehicle crash box applications.

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Warpage optimisation on the moulded part with straight drilled and conformal cooling channels using Response Surface Methodology (RSM), Glowworm Swarm Optimisation (GSO) and Genetic Algorithm (GA) optimisation approaches

2021 , Mohd. Hazwan Mohd. Hanid , Shayfull Zamree Abd. Rahim , Joanna Gondro , Safian Sharif , Mohd. Mustafa Al Bakri Abdullah , Azlan Mohd Zain , Abdellah El-hadj Abdellah , Mohd. Nasir Mat Saad , Jerzy J. Wysłocki , Marcin Nabiałek

It is quite challenging to control both quality and productivity of products produced using injection molding process. Although many previous researchers have used different types of optimisation approaches to obtain the best configuration of parameters setting to control the quality of the molded part, optimisation approaches in maximising the performance of cooling channels to enhance the process productivity by decreasing the mould cycle time remain lacking. In this study, optimisation approaches namely Response Surface Methodology (RSM), Genetic Algorithm (GA) and Glowworm Swarm Optimisation (GSO) were employed on front panel housing moulded using Acrylonitrile Butadiene Styrene (ABS). Each optimisation method was analysed for both straight drilled and Milled Groove Square Shape (MGSS) conformal cooling channel moulds. Results from experimental works showed that, the performance of MGSS conformal cooling channels could be enhanced by employing the optimisation approach. Therefore, this research provides useful scientific knowledge and an alternative solution for the plastic injection moulding industry to improve the quality of moulded parts in terms of deformation using the proposed optimisation approaches in the used of conformal cooling channels mould.

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Effects of Cutouts on Energy Absorption Characteristics of Thin-walled Tube Impacted under Dynamic Loading

2022-12 , M. H. Zikri , M. Ahmad , Muhamad Nur Misbah , Wan Mohd Faizal Wan Nik , Mohd Al-Hafiz Mohd Nawi , Mohd Haidiezul Jamal Ab Hadi , Mohd. Hazwan Mohd. Hanid

A thin-walled tube is an energy absorber device that is commonly used in automotive and locomotive applications. The function of this element is to convert the kinetic energy into other forms of energy during a collision that can minimize injuries to the passengers. Therefore, various studies have been reported previously to improve the thin-walled structure to decrease the damage and provide protection for the vehicle and occupant. This study aims to determine the effects of the cutout on the thin-walled tube when impacted under dynamic axial loading. The effects of sizes, shapes, locations, and the number of cutouts on the energy absorption characteristics have been analyzed by using the validated finite element model. The result indicates that a circular tube with a square cutout shape, larger cutout sizes, and near the top-end of the tube has more energy absorption characteristics. Furthermore, the results of energy absorption (EA), crush force efficiency (CFE), and specific energy absorption (SEA) are highest when applying four cutouts on the surface of the thin-walled tube. Research information provided in this study will serve as a guide in designing the cutout thin-walled tube for crashworthiness enhancements in the future.

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Determination of moisture content on kenaf via fluidization systems

2020-03-25 , Zainuddin H.H.M. , Mohd Al-Hafiz Mohd Nawi , Kasim M.S. , Mohd. Hazwan Mohd. Hanid , Wan Azani Wan Mustafa , Nik Noriman Zulkepli , Dahham O.S.

Malaysia is a one of tropical forest country in the Southeast Asia and they have a great potential of green agriculture source to be used as a renewable energy. One of this source is a Kenaf that is consist of a core and bast fibers. In this study, biomass which is Kenaf plant was dried using Sherwood M501 air fluid bed dryer. Air fluid bed dryer is one of the fluidization drying process that have potential to be widely used. The current properties in this material used contain the high value of water when produced pellet. Therefore, a study was conducted to determine the characteristics and the percentage of Kenaf focused on moisture loss of Kenaf sample via fluidization drying process. The results of found that during fluidization process the best condition that reduce most of the moisture content of sample is the second condition that applied 4.0 m/s velocity (50% of fan speed), 46°C temperature. Effect of the used of suitable amount of air velocity and temperature would attributed to the physical characteristics change and moisture content value that should be obtained.

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Pollutant emission in diesel engine

2020-01-01 , Mohd Al-Hafiz Mohd Nawi , Mohd. Hazwan Mohd. Hanid , Wan Azani Wan Mustafa , Kasim M.S. , Raja Abdullah R.I.

As for the diesel engine, it is well known as one of the largest contributors to environmental pollution, which cause by exhaust emission. Therefore, due to the energy constraint, the rising cost of raw petroleum and environmental change with the expanding request for vitality preservation and environmental protection further enhancement in fuel adaptability and emission reduction in a diesel engine are direly required. The outflows framed are indigent upon the engine configuration, power yield and working burden. The complete ignition of fuel prompts real diminishments in the development of fumes discharges. Complete on combustion will leads a significant mechanical power for the vehicle, which is perfect on the air-fuel mixture. With a specific end goal to diminish NOx and PM arrangement it is important to comprehend the components of its development.

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Hybrid mold : Comparative study of rapid and hard tooling for injection molding application using Metal Epoxy Composite (MEC)

2021 , Radhwan Hussin , Safian Sharif , Marcin Nabiałek , Shayfull Zamree Abd. Rahim , Mohd Tanwyn Mohd Khushairi , Jerzy J. Wysłocki , Mohd. Mustafa Al Bakri Abdullah , Mohd. Hazwan Mohd. Hanid , Mohd Azlan Suhaimi , Katarzyna Błoch

The mold-making industry is currently facing several challenges, including new competitors in the market as well as the increasing demand for a low volume of precision moldings. The purpose of this research is to appraise a new formulation of Metal Epoxy Composite (MEC) materials as a mold insert. The fabrication of mold inserts using MEC provided commercial opportunities and an alternative rapid tooling method for injection molding application. It is hypothesized that the addition of filler particles such as brass and copper powders would be able to further increase mold performance such as compression strength and thermal properties, which are essential in the production of plastic parts for the new product development. This study involved four phases, which are epoxy matrix design, material properties characterization, mold design, and finally the fabrication of the mold insert. Epoxy resins filled with brass (EB) and copper (EC) powders were mixed separately into 10 wt% until 30 wt% of the mass composition ratio. Control factors such as degassing time, curing temperature, and mixing time to increase physical and mechanical properties were optimized using the Response Surface Method (RSM). The study provided optimum parameters for mixing epoxy resin with fillers, where the degassing time was found to be the critical factor with 35.91%, followed by curing temperature with 3.53% and mixing time with 2.08%. The mold inserts were fabricated for EB and EC at 30 wt% based on the optimization outcome from RSM and statistical ANOVA results. It was also revealed that the EC mold insert offers better cycle time compared to EB mold insert material.

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