Nik Noriman Zulkepli, Assoc. Prof. Ts. Dr.
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/34027
This page provides access to scholarly publication by UniMAP Faculty members and researchers2024-03-28T23:57:41ZShrinkage analysis on thick plate part using Response Surface Methodology (RSM)
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/69164
Shrinkage analysis on thick plate part using Response Surface Methodology (RSM)
M. Isafiq; Shayful Zamree, Abd Rahim; Mohd Nasir, Mat Saad; M., M. Rashidi; Mohd Fathullah, Ghazli @ Ghazali; Nik Noriman, Zulkepli
The work reported herein is about an analysis on the quality (shrinkage) on a thick plate part using Response Surface Methodology (RSM). Previous researches showed that the most influential factor affecting the shrinkage on moulded parts are mould and melt temperature. Autodesk Moldflow Insight software was used for the analysis, while specifications of Nessei NEX 1000 injection moulding machine and P20 mould material were incorporated in this study on top of Acrylonitrile Butadiene Styrene (ABS) as a moulded thermoplastic material. Mould temperature, melt temperature, packing pressure and packing time were selected as variable parameters. The results show that the shrinkage have improved 42.48% and 14.41% in parallel and normal directions respectively after the optimisation process.
Link to publisher's homepage at https://www.matec-conferences.org/
2016-01-01T00:00:00ZAnalysis of shrinkage on thick plate part using genetic algorithm
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/69163
Analysis of shrinkage on thick plate part using genetic algorithm
S., N. Najihah; Shayful Zamree, Abd Rahim; S., M. Nasir; Mohd Sazli, Saad; M., M. Rashidi; Mohd Fathullah, Ghazli @ Ghazali; Nik Noriman, Zulkepli
Injection moulding is the most widely used processes in manufacturing plastic products. Since the quality of injection improves plastic parts are mostly influenced by process conditions, the method to determine the optimum process conditions becomes the key to improving the part quality. This paper presents a systematic methodology to analyse the shrinkage of the thick plate part during the injection moulding process. Genetic Algorithm (GA) method was proposed to optimise the process parameters that would result in optimal solutions of optimisation goals. Using the GA, the shrinkage of the thick plate part was improved by 39.1% in parallel direction and 17.21% in the normal direction of melt flow.
Link to publisher's homepage at https://www.matec-conferences.org/
2016-01-01T00:00:00ZCommon Defect of Colonial Buildings in Malaysia
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/69006
Common Defect of Colonial Buildings in Malaysia
Mohd Hanizun, Hanafi; Mohd Umzarulazijo, Umar; A. A., Razak; Zul Zakiyuddin, Ahmad Rashid; Nik Noriman, Zulkepli; Omar S., Dahham
Defects and damage to heritage buildings constitute a significant problem to be understood and addressed by the organisation. Lack of information on defects towards the heritage buildings results in decisions or actions made by the authorities not meeting the proper targets. Therefore, this research purposely to identify the types of defects inherent in the heritage buildings and to determine the degree of errors in the heritage buildings surveyed. Nine (9) heritage buildings from eight (8) states in Malaysia reviews and Systematic Visual Assessment (SVA) approaches apply to the main building comprises seven (7) major building
component namely roof, wall, column and beam, windows, doors, floor, stair and apron including building services (air-condition). A total of thirty-three (33) defect generally occurs in the heritage building by previous researchers, and the assessment result indicates that twenty-two (22) type of glitch with dampness problems at twenty-nine (29.1%) dominates the cumulative count compares to others listed defect. The defect frequently occurs for nine (9) study building starts with wall component at (33.67%) deficiency followed by the column and beam (21.67%), roof (15.0%). Therefore to organise heritage building in general, the relevant authority and stakeholders’ must prioritise the three (3) critical components and dampness problems as a framework in mitigating overall issues related to the heritage building.
Link to publisher's homepage at https://iopscience.iop.org/
2018-01-01T00:00:00ZGreen Curb - An Alternative Method to Produce Road Curb Using Old Tire
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/69005
Green Curb - An Alternative Method to Produce Road Curb Using Old Tire
Izwan, Johari; Md Azlin, Md Said; Md Azree, Othuman Mydin; D Gunasegar; Nik Noriman, Zulkepli; Omar S., Dahham
Green curb was introduced to be an alternative material for a traditional road curb. This green curb is having a different concrete mix but the dimension and other requirement with respect to JKR requirement is still the same. The coarse aggregate will be replaced with crumb rubber (CR) that was extracted from vehicle tires after been shredded to the specified
size from 15-20 mm as coarse aggregate. Testing such as slump test, compressive strength test
and rebound hammer test was conducted to obtain the results. From the results, the slump test
shows a high workability and decrease in compressive strength as the percentage of CR
increase. The total weight of road curb is reduced by almost 8% compared to the control
specimen. This 20% CR mixtures shows good result among other mixtures. The percentage of
CR used are 20%, this particular percentage has good workability, satisfy the concrete grade 25
as required by JKR guideline (JKR/SPJ/1988).
Link to publisher's homepage at https://iopscience.iop.org/
2018-01-01T00:00:00Z