ABU ABDULLAH - Academia.edu (original) (raw)

Papers by ABU ABDULLAH

Abstract: The High Pressure Waterjet Assisted Machining (HPWAM) is a machining process that invol... more Abstract: The High Pressure Waterjet Assisted Machining (HPWAM) is a machining process that involves high pressure coolant being delivered at the cutting zone. This paper investigates the performance of conventional and HPWAM when machining Ti-6Al-4V titanium alloy. The evaluations were based on the tool life, wear mechanisms, surface profile and chip formation. The coolant pressures, cutting speed, feed rate and depth of cut were set at 11-20.3 MPa, 110m/min, 0.15 mm/rev and 0.5 mm respectively. The results showed that improved tool life as much as 195 % can be achieved when machining Ti-6Al-4V with HPWAM due to better coolant access at the cutting zone. Surfaces generated when machining with HPWAM were generally acceptable with negligible physical damage. Long and continuous chip formations were observed when machining in conventional coolant supply corresponded to the low coolant pressure. Increasing coolant pressure significantly reduces the chip size, resulting in a reduction i...

The International Journal of Learning: Annual Review, 2004

Nowadays the applications of sensors are a very promising research field since they find applicat... more Nowadays the applications of sensors are a very promising research field since they find application in many different areas. Biosensors are an increasingly important technology in the detection of compounds ranging from pesticides to biological weapons. Typically, biosensors consist of a biological macromolecule that is immobilized on the surface of a signal transducer. As the macromolecule binds specifically to the ligand being detected, the signal transducer can measure a physical change due to the binding event. One promising type of detector is the Quartz Crystal Microbalance (QCM). The QCM is a piezoelectric mass-sensing device. A QCM device works by sending an electrical signal through a gold-plated quartz crystal, which causes a vibration at some resonant frequency. The QCM then measures the frequency of oscillation in the crystal. When used as a biosensor, the QCM can detect changes in frequency of the crystal due to changes in mass on the surface of the crystal. In the pre...

Lecture Notes in Mechanical Engineering, 2019

Drilling is one of the major machining operations in manufacturing. The application of robots in ... more Drilling is one of the major machining operations in manufacturing. The application of robots in machining is the alternative technique to produce new products of the future. However, the performance of the robot always been a challenge in production. This paper presents the investigation on the effect of arm robot itinerary, holes orientation and materials type on holes accuracy and toolpath angularity of Aluminum Alloy 6061 (Al 6061) and High-density polyethene (HDPE). A series of drilling experiments by using COMAU robot with 24 runs were conducted at difference combination parameters. The measurement on hole accuracy and toolpath angularity were done by CMM machine. Response surface methodology (RSM) was used as a design of experiment (DOE) for optimization. Evaluation by ANOVA showing that the interaction between arm robot itinerary and material type found to be significant factor for the hole accuracy whilst the orientation of the hole dominant factor affecting the toolpath an...

The purpose of this paper is to investigate the perception of small medium and enterprises (SMEs)... more The purpose of this paper is to investigate the perception of small medium and enterprises (SMEs) that motivates to adopt halal food supply chain (HFSC) in their business. Data were collected through a survey responded 183 out of 410 potential respondents from Halal Industry Development Corporation (HDC) directory website. Reliability analyses were applied to test the internal consistency of survey instrument. Moreover, regression analysis was applied to determine the predicted factors of SME’s perception towards the adoption of HFSC. Results showed that top management, organizational readiness, halal integrity, halal awareness and expected business benefits showed significantly positive relationship towards the adoption of HFSC. Furthermore, halal integrity showed the strongest factors towards its adoption. However, the understanding practice of halal showed insignificant towards it adoption. The findings of the present study have several relevant contributions towards food industr...

Purpose: The study attempts to evaluate the Entrepreneurship Development course(s) offered at the... more Purpose: The study attempts to evaluate the Entrepreneurship Development course(s) offered at the undergraduate level in different public and private universities in Bangladesh in terms of their objectives and contribution in developing traits, skills, and knowledge among the students. Methods: This is a descriptive study based on a questionnaire survey. Data were collected from the faculty members who were teaching or taught entrepreneurship courses at the undergraduate level (BBA). A total of 58 respondents, 16 from Public Universities, and 42 Private Universities filled up the questionnaire properly and used for data analysis. The questionnaire was developed based on the Entrepreneurship Education Model (Azim & AlKahtani 2015). Results: It is found that as a whole the courses are offered with a medium level of effectiveness with the mean score of 2.36 on the scale of 4. It is also observed that the Entrepreneurship courses offered at various academic Levels in Bangladesh are run ...

International Journal of Advanced Mechatronic Systems, 2021

The American war on Iraq in 2003 has unleashed tremendous changes to the Iraqi media. It has been... more The American war on Iraq in 2003 has unleashed tremendous changes to the Iraqi media. It has been changed from a draconian, state-run institution into a free-for-all one. However, the relative freedom the media enjoyed was marred by the US management of the press, as part of the military operation and the campaign to win the hearts and minds of Iraqis who were suspicious of America’s plans for ‘liberation and democracy’. The stages of this US policy of press management and its impact on the shaping of the Iraqi media are the core elements of this thesis. This study examines the relations between the media in Iraq and the American occupation military forces, including the Coalition Provisional Authority (CPA). It focuses on how American practices formed the media in Iraq after the invasion, how these practices and policies have affected the freedom of press and whether they conform to the international standards of journalism. It argues that the American policies undermined their pro...

The utilisation of natural fibres in composite materials is expanding because of an enactment tha... more The utilisation of natural fibres in composite materials is expanding because of an enactment that constrains automotive makers to reuse and recycle materials,leading to an increase in bio-based materials substances in automotive applications.An experimental investigation was conducted to explore car door map pocket for PROTON Saga FL by using non-woven kenaf (N-W)and hybrid from non- oven/ woven fabric kenaf (HN-W/W).The Hand Lay-up Method followed by vacuum bagging process were used.The results revealed that L2 HN-W/W was the reasonable sample for car door map pocket due to its light weight,good tensile strength and flexural strength as compared to PP.It was also found that the tensile strength and flexural strength were improved by utilising woven kenaf fabric in composites.Result implications and future research directions were also presented.

Journal of Advances in Medicine and Medical Research, 2018

Background: Comprehensive Emergency Obstetric Care (C-EmOC) equipment were provided to 47 Upazila... more Background: Comprehensive Emergency Obstetric Care (C-EmOC) equipment were provided to 47 Upazila Health Complexes (UHCs) and Basic Emergency Obstetric Care (B-EmOC) equipment to 192 UHCs in 2003-2004. The tools required for repairing the equipment were also provided to the National Electro-Medical Equipment Maintenance Workshop and Training Centre (NEMEW&TC) in Dhaka and District Electro-Medical Equipment Maintenance Workshops (DEMEW) in 18 districts. Japan International Cooperative Agency (JICA) provided financial support to purchase and distribute of these logistics. This study explored the utilization of EmOC equipment in the sub-district facilities.

Management Science Letters, 2018

Information System (IS) is a strife to exploit Business Intelligence (BI) in an organization. In ... more Information System (IS) is a strife to exploit Business Intelligence (BI) in an organization. In the Malaysian Halal Food Manufacturing, a league of Information Technology (IT) professional and decision makers is the architect of the perspective in IT. There are numerous research studies on utilizing and investigating strategic effects of environmental factors augmentation on the organizations, but compact information is acknowledged prevailing how the subjective conception for the strategic source of decisions is transformed into the objective principle. Hence, general interpretation of the IT professional and the decision makers is crucial for a comprehensive and collaborative decision-making process. Therefore, prosper stimulate assimilation of the environmental factors that persuade the knowledge integration between IT professionals and decision makers is compulsory. BI and Big Data (BD) help organizations derive enhance decision-making process and knowledge creation. The objective of this research study is to emerge knowledge from organizing BD and to utilize BI together with perceiving MIT90s framework and environmental factors for the analysis of decision-making process of halal food manufacturers in Malaysia. The study applied regression analysis to predicted 103 responses to determine decision making of business performance. The results indicate that halal market demand played important role in predicting business performance of halal manufactures. This study provides some insights into decision making perspectives of business performance management among halal food manufacturers in Malaysia.

IOP Conference Series: Materials Science and Engineering, 2016

Journal of Technology Studies, 2004

AIP Conference Proceedings, 2016

Today’s Malaysia has more than 70 companies that are actively involved in composite activities. T... more Today’s Malaysia has more than 70 companies that are actively involved in composite activities. The activities are ranging from various business sectors, using different technology and material. Composites has been used in a wide range of applications in Malaysia and contributes to growth in a diverse range of industry value chains from utilities through to boat building, manufacturing and industrial applications, aerospace, consumer products and construction products. Thus, a key part of this strategy is the establishment of the National Composites Centre (NCC), which will bring together dynamic companies and enterprising academics to develop new technologies for the design and rapid manufacture of high-quality composite products.

International journal of environmental research and public health, Jan 26, 2016

Asian Social Science, 2015

Technical and Vocational Education (TVE) is facing new challenges in an increasingly competitive ... more Technical and Vocational Education (TVE) is facing new challenges in an increasingly competitive global context. The continuing under representation of women in engineering fields at semiskilled and high-skilled levels is receiving renewed attention. This paper explores women as part of special population in Malaysia who desire to be placed as equal to men in Malaysian context. Policy, leadership, and professional growth are discussed comprehensively to support Malaysian females' involvement in engineering disciplines, one of Technical and Vocational Education (TVE) programs in Malaysia. This paper also explores issues and challenges facing by Malaysian women in order to be recognized by the subordinates , peers, leaders and society within male-dominated professions and environment.

Applied Mechanics and Materials, 2015

This paper aims to study the tool life of coated and uncoated high speed steel (HSS) when machini... more This paper aims to study the tool life of coated and uncoated high speed steel (HSS) when machining LM6 aluminium. The experiment was carried out in dry condition with spindle speed of 5000 rpm and 6000 rpm, and feed rate of 90 mm/min and 120 mm/min. Axial and radial depth of cut remain constant at 0.5 mm and 1.0 mm, respectively during the experiment. Throughout the experiments, coated HSS showed higher tool life as compared to uncoated HSS due to the coating layer of titanium aluminium nitride (TiAlN) provides protection from rapid wear during machining. For both cutting tools, the optimum cutting parameter was recorded at 5000 rpm spindle speed, 90 mm/min feed rate, 0.5 mm axial depth of cut and 1.0 mm radial depth of cut. Some evidence of built up edge (BUE) formation were observed at most of cutting tools, showing the dominant wear mechanisms appear to be adhesive wear.