Mechanical & Industrial Engineering: Recent submissions
Now showing items 441-460 of 1321
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Comparison between variable and constant refrigerant flow air conditioning systems in arid climate: Life cycle cost analysis and energy savings
( MDPI , 2021 , Article)All over the world, there is a call to encourage sustainable energy thinking and implementation. There is an urgent need to consider sustainable solutions in any design projects that are able to reduce energy consumption. ... -
A need for functionally graded stiffness femoral stem for reduction in stress shielding and promoting bone growth: Computational analysis
( American Society of Mechanical Engineers (ASME) , 2017 , Conference Paper)Total Hip Arthroplasty (THA) is an orthopaedic procedure that is available to reduce pain and restore the functionality of hip joints. THA has been successfully implemented for the last 40 years. However, after more than ... -
A novel design, analysis and 3D printing of Ti-6Al-4V alloy bio-inspired porous femoral stem
( Springer , 2020 , Article)The current study is proposing a design envelope for porous Ti-6Al-4V alloy femoral stems to survive under fatigue loads. Numerical computational analysis of these stems with a body-centered-cube (BCC) structure is conducted ... -
An experimental validation of numerical model for top-hat tubular structure subjected to axial crush
( MDPI AG , 2021 , Article)Vehicle crashworthiness is an important aspect to consider when designing a vehicle to ensure the safety of the occupants. Besides this, vehicles are also designed to reduce weight for better fuel economics. One possible ... -
Effect of swirl at intake manifold on engine performance using ethanol fuel blend
( Taylor and Francis Inc. , 2020 , Article)Ethanol fuel is widely used as an alternative fuel in spark ignition engines. The use of ethanol reduces dependence on fuel from the fraction of hydrocarbons. As such, adding swirl generators to the intake manifold aims ... -
Development of diverse assessment methods for pbl implementation at a course level in engineering education in qatar
( Aalborg University , 2021 , Conference Paper)While the current literature collectively agrees that Problem and/or Project-Based Learning (PBL) is a useful instructional methodology, the majority of the literature has been based on the assumption that all PBL stems ... -
Effect of Geometrical Parameters on the Performance of Longitudinal Functionally Graded Femoral Prostheses
(2015 , Article)This study aimed to assess the performance of different longitudinal functionally graded femoral prostheses. This study was also designed to develop an appropriate prosthetic geometric design for longitudinal functionally ... -
Design of thin wall structures for energy absorption applications: Enhancement of crashworthiness due to axial and oblique impact forces
(2013 , Article)This paper describes a computationally aided design process of a thin wall structure subject to dynamic compression in both axial and oblique directions. Several different cross sectional shapes of thin walled structures ... -
Comparison between contact and immersion ultrasonic techniques to evaluate longitudinal residual stress in friction stir welding of aluminum plates
( American Society for Nondestructive Testing , 2015 , Article)Ultrasonic stress measurement is a nondestructive technique that has increasingly been employed to evaluate the welding residual stress of different materials. This study compares contact and immersion ultrasonic waves ... -
A framework for developing innovative problem-solving and creativity skills for engineering undergraduates
( Springer International Publishing , 2015 , Book chapter)Background and Purpose Problem-solving and creativity skills are a set of skills that are highly looked for in today's engineers. Globalization and the rapid pace of technology growth, including awareness on sustainability, ... -
Composite sandwich structures for crashworthiness applications
(2007 , Article)Fibre-reinforced polymer sandwiches are promising materials for reducing vehicle mass, thereby improving the fuel economics. Nonetheless, to fully explore these materials as the primary structures and energy absorbers in ... -
Composite Hat Structure Design for Vehicle Safety: Potential Application to B-Pillar and Door Intrusion Beam
( MDPI , 2022 , Article)Regarding crashworthiness, many published works have focused on designing thinwalled structures for frontal collisions compared to side-impact collisions. This paper presents an experimental investigation and finite element ... -
A comparative analysis of experimental and numerical investigations of composite tubes under axial and lateral loading
(2010 , Article)Quasi-static tests are performed in order to determine the crash behavior of composite tubes. The specimens are made from woven fiber carbon/epoxy. The crash experiments show that the tubes crushed in a progressive manner ... -
A comprehensive analysis of bio-inspired design of femoral stem on primary and secondary stabilities using mechanoregulatory algorithm
( Springer Science and Business Media Deutschland GmbH , 2020 , Article)The coated porous section of stem surface is initially filled with callus that undergoes osseointegration process, which develops a bond between stem and bone, lessens the micromotions and transfers stresses to the bone, ... -
Integrated TOPSIS-COV approach for selecting a sustainable PET waste management technology: A case study in Qatar
( Elsevier , 2022 , Article)In 2018, the global annual consumption of Polyethylene terephthalate (PET) bottles was approximately 27.64 million tons, with one million bottles sold worldwide every minute. Unmanaged PET bottles in the environment lead ... -
Robust Resource Investment Problem with Time-Dependent Resource Cost and Tardiness Penalty
( IEEE Computer Society , 2016 , Conference Paper)In this paper, the classical Resource Investment Problem (RIP) is extended to consider time-depended resource cost instead of time-independent resource cost. The problem is named as the Resource Investment Problem with ... -
Improved bounds for hybrid flow shop scheduling with multiprocessor tasks
(2013 , Article)In this paper, we investigate the problem of minimizing makespan in a multistage hybrid flow-shop scheduling with multiprocessor tasks. To generate high-quality approximate solutions to this challenging NP-hard problem, ... -
Optimal design and operation of conventional, solar electric, and solar thermal district cooling systems
( John Wiley and Sons Ltd , 2022 , Article)This research investigates the integration of solar energy with traditional cooling technologies using solar electric cooling systems. A holistic optimization process is introduced to enable the cost-effective design of ... -
Optimization of design and operation of solar assisted district cooling systems
( Elsevier , 2020 , Article)The demand for air conditioning and cooling services is rapidly increasing worldwide. As cooling demand has high coincidence to occur in countries with high solar irradiation, the combination of solar thermal energy and ... -
MIP models for minimizing total tardiness in a two-machine flow shop
( Palgrave Macmillan Ltd. , 2013 , Article)We propose compact mixed-integer programming models for the NP-hard problem of minimizing tardiness in a two-machine flow shop. Also, we propose valid inequalities that aim at tightening the models' representations. We ...