Mechanical & Industrial Engineering: Recent submissions
Now showing items 521-540 of 1396
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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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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, ... -
Solving a large-scale crew pairing problem
( Palgrave Macmillan Ltd. , 2015 , Article)Airline companies seek to solve the problem of determining an assignment of crews to a pre-determined flight schedule with minimum total cost, called the Crew Pairing Problem (CPP). Most of the existing studies focus on ... -
Robust optimization for the discrete time-cost tradeoff problem with cost uncertainty
( Springer International Publishing , 2015 , Book chapter)Projects are subject to various sources of uncertainty that hamper reaching project targets; hence, it is crucial importance to use effective approaches to generate robust project schedules, which are less vulnerable to ... -
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 ... -
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 ... -
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 ... -
Green hydrogen for industrial sector decarbonization: Costs and impacts on hydrogen economy in qatar
( Elsevier , 2021 , Article)This study focuses on the development of a strategic framework for the design of a hydrogen supply chain network (HSCN) mainly investigating the potential of industrial decarbonization and multi-sectors integration (i.e., ... -
Optimization models for a single-plant District Cooling System
( Elsevier , 2015 , Article)A District Cooling System (DCS) is an interconnected system encompassing a centralized chiller plant, a Thermal Energy Storage (TES) unit, a piping network, and clusters of consumers' buildings. The main function of a DCS ... -
Optimal planning of liquefied natural gas deliveries
( Elsevier , 2016 , Article)We investigate the problem of designing an optimal annual delivery plan for Liquefied Natural Gas (LNG). This problem requires determining the long-term cargo delivery dates and the assignment of vessels to the cargoes ... -
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 ... -
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 ...
