Sa'ardin Abdul Aziz

Universiti Teknologi Malaysia | UTM · Razak School of Engineering and Technology

Ultrasonic spot welding (USW) is a solid joining technique widely known for the joining of metals and composite materials. However, joining dissimilar metals using USW introduces voids, swirl-like structures, and poor intermetallic compounds around weld interfaces. This paper examines the current state of USW for joining dissimilar metals and compo...

Natural and synthetic fibres have emerged in high demand due to their excellent properties. Natural fibres have good mechanical properties and are less expensive, making them a viable substitute for synthetic fibers. Owing to certain drawbacks such as their inconsistent quality and hydrophilic nature, researchers focused on incorporating these two...

Recently, because of the rising population, carbon overloading, and environmental distress, human beings have needed to increase awareness and responsibility for the reduction of agricultural waste. The utilization of agricultural waste as a filler material in reinforced polymers is a fascinating discovery. This review paper attempts to study the p...

Hybrid composites have recently become attractive to scholars due to their significant potential to overcome the drawbacks of monofiber composites. However, the simultaneous effects of independent parameters on the properties of these hybrid composites are still not clear as the previous studies have mostly focused on varying one parameter only. Th...

Utilizing agro-waste material such as rice husk (RH) and coco peat (CP) reinforced with thermoplastic resin to produce low-cost green composites is a fascinating discovery. In this study, the effectiveness of these blended biocomposites was evaluated for their physical, mechanical, and thermal properties. Initially, the samples were fabricated by u...

Banana pseudo-stem fibers used as a reinforcing material in synthetic matrix polymers have offered various advantages as they are environmentally friendly, have relatively low density and are abundantly available. The main factors that influence the mechanical behavior of natural composites are fiber length, fiber content, and chemical treatment. T...

This paper presents the field tests conducted as part of activity to establish the vehicle accelerated corrosion test procedure in Malaysia, initiated by the national car manufacturer company, PROTON, Malaysia. Vehicle accelerated corrosion test is a combination of corrosion exposures and durability cycles to accelerate the corrosion process and de...

In the past few decades, a rapid of industrialization increasing the noise pollution and provides a people awareness to combat this issue. Here, apart from providing employment opportunities to worker, manufacturing industry also produce disturbing noise that is generated by various sources especially from the machineries. The aim of this study is...

Car jack is an equipped accessory package in every units of car sold to customer that used to uplift the cars while replacing tires during an emergency or repair. The automotive manufacturers are actively conducting their Product Improvement Campaign and the objective of the campaign is to improve the quality of product sold to the customers. The c...

The aim of this paper is to identify, review and carry out comparisons to five Standards where the main interest is on its risk assessment elements related to confined space activities. This is due to lack of specific approach of the Standards for confined space such as entry procedure requirements, risk assessment method, current practice of risk...

In the past few decades, a rapid of industrialization increasing the noise pollution and provides a people awareness to combat this issue. Here, apart from providing employment opportunities to worker, manufacturing industry also produce disturbing noise that is generated by various sources especially from the machineries. The aim of this study is...

The aim of this paper is to identify, review and carry out comparisons to three legislations. The main interest of the paper is on the risk assessment elements in these legislations which are related to confined space activities. This is due to lack of specific approach of the legislation for confined space such as entry procedure requirements and...

The aim of this paper is to identify, review, and compare seven Guidelines, mainly focusing on risk assessment elements related to confined space activities. This is due to the lack of a specific approach regarding Guidelines for confined spaces such as entry procedure requirements, risk assessment methods, rather general existing risk assessment p...

The application of ultrasonic vibration has been extended into the powder metallurgy compaction. Special design of ultrasonic compaction tool was used. In the present study, stainless steel powder was compacted under quasi-static and ultrasonic compression processes. The green compact specimens then sintered using vacuum furnace. In order to invest...

Mechanical characteristics of composite sandwich structure have expanded its potential in industries. The local government also encourages the researcher to develop more on natural fibres including kenaf to replace conventional composites. The aims of this study are to investigate the compression response, energy absorbing and subsequent failure mo...

Energy is an important element in human daily life. In Malaysia, about 80% of electrical energy produced from burning fuels that will cause of carbon dioxide emission to atmosphere. The effect could be reduced with less energy consumption. This project focuses on energy management strategies for energy saving that can be done on the HVAC system, ai...

In the composite industry, natural fibres have great potential to replace synthetic fibres like carbon and glass, due to their low cost and environmentally friendly materials. Bamboo is emerging as a versatile reinforcing fibre candidate because this woody plant has a number of advantages, such as being naturally strong, biodegradable and abundantl...

The current study is presented into the investigation of the application of ultrasonic vibration on the lower punch during compaction process of powder metallurgy material. The lower punch is specifically designed of ultrasonic horn which has been tuned at frequency of 20 kHz and vibrates in longitudinal mode. Finite Element modeling was used to as...

Flutter is a dynamic instability problem represents the interaction among structural, aerodynamic, elastic and inertial forces and occurred when the energy is continuously transformed by the surrounding fluids to a flying structure in the form of kinetic energy. The study was conducted to investigate the relationship of the control surface deflecti...

An investigation through experiments and finite element analysis (FEA) has been carried out to study the effects of applying ultrasonic oscillations to the lower platen in forming tests for two different metals. Previous research has shown that by applying ultrasonic vibrations to the lower platen in compression tests on pure aluminium specimens, t...

The use of ultrasonic excitation of tools and dies in metal forming and joining operations has been the subject of ongoing research for many years. However, the lack of understanding about the effects of ultrasonic vibrations on the forming process has resulted in difficulties in maximising the benefits and applications of this technology. In parti...

The use of ultrasonic excitation of tools and dies in metal forming operations has been the subject of ongoing research for many years. However, the lack of understanding about the effects of ultrasonic vibrations on the forming process has resulted in difficulties in maximising the benefits and applications of this technology. In particular, exper...