A computer-based intelligent system for fault diagnosis of an aircraft engine

In this paper, an intelligent knowledge-based system (KBS) capable of assisting aircraft mechanics and engineers to deal with fault diagnosis of the turbo-prop aircraft engine is presented. The KBS intelligent jet engine trouble-shooting system (IJETSS) employs expert knowledge to act in a way similar to that of a human expert in an aircraft maintenance field by using if-then rule-based system. The major aim of the KBS of IJETSS is to generate rapid and precise engine fault diagnosis that can simulate the work of experienced aircraft maintenance mechanics and engineers. The developed system can also be useful for the inexperienced aircraft mechanics and engineers and can be used for training module for them

Nonlinear finite element analysis of axially crushed cotton fibre composite corrugated tubes

It is proven experimentally that introducing corrugation along a shell generator together with a proper advanced composite material will enhance the crashworthiness performance of energy device units. This is because corrugation along the shell generator will force the initial crushing to occur at a predetermined region along the tube generator. On the other hand, a proper composite material offers vast potential for optimally tailoring a design to meet crashworthiness performance requirements. In this paper, the energy absorption characteristics of cotton fibre/propylene corrugated tubes are numerically studied. Finite element simulation using ABAQUS/Explicit was carried out to examine the effects of parametric modifications on the tube’s energy absorption capability. Results showed that the tube’s energy absorption capability was affected significantly by varying the number of corrugation and aspect ratios. It is found that as the number of corrugations increases, the amount of absorbed energy significantly increases

Experimental optimization of composite collapsible tubular energy absorber device

A four-phase program to improve the specific energy absorbed by axially crushed composite collapsible tubular energy absorber devices was undertaken. In the first phase, examining of the crushing behaviour of non-triggered tubes was carried out. The second phase is aimed at obtaining the best position for the triggered wall. The third phase focuses on the effects of material sizing in order to understand the influence of triggered wall length on the responses of composite circular tubes to the axial crushing load. The results of these three phases of the study contribute to the fourth whose objective is to optimize the shape geometry of the cross-section area to further improving in tube energy absorption capability. The experimental results demonstrated the strong potential benefits of optimizing the material distribution. The sizing and shape optimization of composite collapsible tubes exhibited a pronounced effect on their capability to absorb high specific energy under axial compressive load

Effects of blowing ratio on the heat transfer coefficient distribution downstream of a single film cooling hole

Detailed distributions of heat transfer coefficients downstream of a single film cooling hole were presented. The film cooling hole has an angle of inclination of 45° and a circular shape diameter of 10 mm. Tests were conducted in a purpose built heat transfer rig at the Department of Aerospace Engineering, UPM. The rig has been modified to conduct transient heat transfer testing using thermochromic liquid crystal technique. A single narrow-band liquid crystal was used to map the distribution of heat transfer coefficient downstream of a single film cooling hole at a blowing ratio ranging between 0.5-0.94. The detailed heat transfer coefficient distributions provide a clear understanding of free jet-mainstream flow interactions for different blowing ratio. Results shows that blowing ratio of 0.64 provides a better cooling protection compared to the other blowing ratios tested

K-chart: research planning and monitoring tool for engineering and technology applications

This paper elaborates on the construction of K-Chart and its advantages on application to engineering and technology research. The importance of planning and monitoring in any activities, more particularly researches can never be over-emphasized. Inadequate research planning and monitoring leads to delayed delivery of results, inefficient use of resources and increased cost. There are various research tools available and being used to assist in research planning and monitoring. An efficient tool should address the issues under study, the methodologies used, the expected results in sufficient details, the timelines, and monitoring features. However, there is arguably no existing tool that can support all the features individually. In this paper, a new research planning and monitoring tool, K-Chart is proposed. K-Chart provides all the features mentioned above and presents them in a simple way

K-Chart: a tool for research planning and monitoring

The importance of planning and monitoring in any activities, more particularly researches can never be over-emphasized. Inadequate research planning and monitoring leads to delayed delivery of results, inefficient use of resources and increased cost. There are various research tools available and being used to assist in research planning and monitoring. An efficient tool should address the issues under study, the methodologies used, the expected results in sufficient details, the timelines, and monitoring features. However, there is arguably no existing tool that can support all the features individually. In this paper, a new research planning and monitoring tool, K-chart is proposed. K-chart provides all the features mentioned above and presents them in a simple way. This paper elaborates on the construction of K-chart and its advantage

Proceedings of International Technical Postgraduate Conference 2022

This conference proceedings contains articles on the various research ideas of the academic & research communities presented at the International Technical Postgraduate Conference 2022 (TECH POST 2022) that was held at Universiti Malaya, Kuala Lumpur, Malaysia on 24-25 September 2022. TECH POST 2022 was organized by the Faculty of Engineering, Universiti Malaya. The theme of the conference is “Embracing Innovative Engineering Technologies Towards a Sustainable Future”.  TECH POST 2022 conference is intended to foster the dissemination of state-of-the-art research from five main disciplines of Engineering: Electrical Engineering, Biomedical Engineering, Civil Engineering, Mechanical Engineering, and Chemical Engineering. The objectives of TECH POST 2022 are to bring together innovative researchers from all engineering disciplines to a common forum, promote R&D activities in Engineering, and promote the dissemination of scientific knowledge and research know-how between researchers, engineers, and students. Conference Title: International Technical Postgraduate Conference 2022Conference Acronym: TECH POST 2022Conference Date: 24-25 September 2022Conference Location: Faculty of Engineering, Universiti Malaya, Kuala Lumpur Malaysia (Hybrid Mode)Conference Organizers: Faculty of Engineering, Universiti Malaya, Kuala Lumpur, Malaysia