Scholars@Duke
George Delagrammatikas

George Delagrammatikas

Professor of the Practice in the Thomas Lord Department of Mechanical Engineering and Materials Science
Thomas Lord Department of Mechanical Engineering and Materials Science
george.delagrammatikas@duke.edu
Duke Box 90300, Durham, NC 27708-0300
100 Science Drive, 1112 Hudson Hall, Durham, NC 27708-0300
Manage Profile
Embed Profile Data

Selected Publications

Measuring the traction limits and suspension forces of a formula SAE racecar

Conference ASEE Annual Conference and Exposition, Conference Proceedings · June 15, 2019 Intercollegiate competitions have established themselves as authentic engineering experiences as both extracurricular learning opportunities and hands-on supplements to traditional course instruction. The following paper describes the integration of a Form ... Cite

Using human-centered design to drive project-based learning in a high school summer stem course (evaluation)

Conference ASEE Annual Conference and Exposition, Conference Proceedings · June 15, 2019 This paper presents a case study describing improvements made to an existing makerspace high school summer outreach course, by using survey data to evaluate the effectiveness of adding Human Centered Design (HCD) into a project-based inventorship curriculu ... Cite

Teaching hands-on racecar design in a summer pre-college program

Conference ASEE Annual Conference and Exposition, Conference Proceedings · June 15, 2019 Competitive motorsports at the undergraduate level has become an increasingly popular extra- and co-curricular activity at universities throughout the world. The importance of these experiential, industry-centered projects has long been understood by servi ... Cite

A high performance, continuously variable engine intake manifold

Conference SAE 2011 World Congress and Exhibition · July 6, 2011 Manifold tuning has long been considered a critical facet of engine design and performance optimization. This paper details the design, analysis and preliminary testing of a continuously variable, carbon fiber intake manifold for a restricted 2003 Suzuki G ... Full text Cite

The traction control system of the 2011 cooper union FSAE vehicle

Conference SAE 2011 World Congress and Exhibition · July 6, 2011 A critical limitation preventing newer FSAE teams from improving in the international rankings is that of the person-machine interface, where driver inexperience and lack of training lead to loss of traction. The Traction Control System (TCS) described her ... Full text Cite

The traction control system of the 2011 cooper union FSAE vehicle

Conference SAE Technical Papers · January 1, 2011 A critical limitation preventing newer FSAE teams from improving in the international rankings is that of the person-machine interface, where driver inexperience and lack of training lead to loss of traction. The Traction Control System (TCS) described her ... Cite

A high performance, continuously variable engine intake manifold

Conference SAE Technical Papers · January 1, 2011 Manifold tuning has long been considered a critical facet of engine design and performance optimization. This paper details the design, analysis and preliminary testing of a continuously variable, carbon fiber intake manifold for a restricted 2003 Suzuki G ... Cite

Chronic intermittent hypoxia induces NMDA receptor-dependent plasticity and suppresses nitric oxide signaling in the mouse hypothalamic paraventricular nucleus.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · September 2010 Chronic intermittent hypoxia (CIH) is a concomitant of sleep apnea that produces a slowly developing chemosensory-dependent blood pressure elevation ascribed in part to NMDA receptor-dependent plasticity and reduced nitric oxide (NO) signaling in the carot ... Full text Cite

The suspension system of the 2009 cooper union fsae vehicle: A comprehensive design review

Conference SAE International Journal of Passenger Cars - Mechanical Systems · August 1, 2010 This work details the process employed to design the 2009 Cooper Union FSAE® suspension system, spanning the overarching design philosophy, configuration selection, analysis, fabrication, and implementation, while offering recommendations to those especial ... Full text Cite

Advanced development and dynamometer tuning of a Suzuki GSXR 600cc engine for an FSAE® vehicle

Conference SAE Technical Papers · January 1, 2010 The engine tuning study presented here serves as an introduction to the basic concepts of implementing a motorcycle engine on an eddy current dynamometer test stand. This work represents the first engine tuning effort of a young FSAE® team and depicts the ... Full text Cite

An onboard telemetry system for low-level electrical signals

Conference SAE Technical Papers · January 1, 2010 A low-cost, high precision strain gauge data acquisition system was designed and implemented to aid in optimizing the design of suspension and steering members in an FSAE vehicle. The primary focus of the project was to capture load limits in A-arms, steer ... Full text Cite

A cost-effective engine-in-the-loop powertrain testing system

Conference SAE Technical Papers · January 1, 2010 The increasing push to accelerate the product design process and to minimize physical testing expense has promoted the development of hardware-in-the-loop testing procedures which couple well-defined virtual models with physical systems. Clear advantages i ... Full text Cite

Variable runner length intake manifold design: An interim progress report

Conference SAE Technical Papers · January 1, 2010 Manifold tuning has long been a critical facet of engine design and performance optimization. This paper details the design, analysis, and initial fabrication of a variable runner length intake manifold for a restricted 2003 Suzuki GSXR 600 engine. A serie ... Full text Cite

Design under uncertainty and assessment of performance reliability of a dual-use medium truck with hydraulic-hybrid powertrain and fuel cell auxiliary power unit

Conference SAE Technical Papers · January 1, 2005 Medium trucks constitute a large market segment of the commercial transportation sector, and are also used widely for military tactical operations. Recent technological advances in hybrid powertrains and fuel cell auxiliary power units have enabled design ... Full text Cite

Simulation-based optimal design of heavy trucks by model-based decomposition: An extensive analytical target cascading case study

Journal Article International Journal of Heavy Vehicle Systems · January 1, 2004 We present the findings of an extensive case study for the decomposed, simulation-based, optimal design of an advanced technology heavy truck by means of analytical target cascading. The use of a series hybridelectric propulsion system, in-hub motors, and ... Full text Cite

Development of a neural network model of an advanced, turbocharged diesel engine for use in vehicle-level optimization studies

Conference Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering · January 1, 2004 The following work documents the development of an artificial neural network (ANN) model of an advanced, turbocharged diesel engine, and its implementation within an overall vehicle simulation. The purpose of this research was to create a model that would ... Full text Cite

Target cascading in vehicle redesign: A class VI truck study

Journal Article International Journal of Vehicle Design · January 1, 2002 The analytical target cascading process is applied to the redesign of a U.S. class VI truck. Necessary simulation and analysis models for predicting vehicle dynamics, powertrain, and suspension behaviour are developed. Vehicle design targets that include i ... Full text Cite

Optimization of advanced engine controls for conventional vehicles: A driving cycle perspective

Conference ASME International Mechanical Engineering Congress and Exposition, Proceedings · January 1, 2002 A controls optimization methodology for advanced diesel engines, as they are utilized in a specific driving cycle, is addressed in this work. The technique illustrated here accounts for realistic engine use regimes encountered during the FTP driving schedu ... Full text Cite

Analytical target cascading for the design of an advanced technology heavy truck

Conference ASME International Mechanical Engineering Congress and Exposition, Proceedings · January 1, 2002 Analytical target cascading (ATC) is a methodology that can be used during the early development stages of large and complex systems for propagating desirable overall product targets to appropriate individual specifications for the various subsystems and c ... Full text Cite

The reverse engineering of a turbocharged diesel engine through a unified systems approach

Conference SAE Technical Papers · January 1, 2001 The need for a rigorous systems engineering approach to automotive powertrains has been addressed in this work from the perspective of the diesel engine. A high-fidelity engine simulation has been integrated with a total vehicle model for the purpose of re ... Full text Cite

Measuring the traction limits and suspension forces of a formula SAE racecar

Conference ASEE Annual Conference and Exposition, Conference Proceedings · June 15, 2019 Intercollegiate competitions have established themselves as authentic engineering experiences as both extracurricular learning opportunities and hands-on supplements to traditional course instruction. The following paper describes the integration of a Form ... Cite

Using human-centered design to drive project-based learning in a high school summer stem course (evaluation)

Conference ASEE Annual Conference and Exposition, Conference Proceedings · June 15, 2019 This paper presents a case study describing improvements made to an existing makerspace high school summer outreach course, by using survey data to evaluate the effectiveness of adding Human Centered Design (HCD) into a project-based inventorship curriculu ... Cite

Teaching hands-on racecar design in a summer pre-college program

Conference ASEE Annual Conference and Exposition, Conference Proceedings · June 15, 2019 Competitive motorsports at the undergraduate level has become an increasingly popular extra- and co-curricular activity at universities throughout the world. The importance of these experiential, industry-centered projects has long been understood by servi ... Cite

A high performance, continuously variable engine intake manifold

Conference SAE 2011 World Congress and Exhibition · July 6, 2011 Manifold tuning has long been considered a critical facet of engine design and performance optimization. This paper details the design, analysis and preliminary testing of a continuously variable, carbon fiber intake manifold for a restricted 2003 Suzuki G ... Full text Cite

The traction control system of the 2011 cooper union FSAE vehicle

Conference SAE 2011 World Congress and Exhibition · July 6, 2011 A critical limitation preventing newer FSAE teams from improving in the international rankings is that of the person-machine interface, where driver inexperience and lack of training lead to loss of traction. The Traction Control System (TCS) described her ... Full text Cite

The traction control system of the 2011 cooper union FSAE vehicle

Conference SAE Technical Papers · January 1, 2011 A critical limitation preventing newer FSAE teams from improving in the international rankings is that of the person-machine interface, where driver inexperience and lack of training lead to loss of traction. The Traction Control System (TCS) described her ... Cite

A high performance, continuously variable engine intake manifold

Conference SAE Technical Papers · January 1, 2011 Manifold tuning has long been considered a critical facet of engine design and performance optimization. This paper details the design, analysis and preliminary testing of a continuously variable, carbon fiber intake manifold for a restricted 2003 Suzuki G ... Cite

Chronic intermittent hypoxia induces NMDA receptor-dependent plasticity and suppresses nitric oxide signaling in the mouse hypothalamic paraventricular nucleus.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · September 2010 Chronic intermittent hypoxia (CIH) is a concomitant of sleep apnea that produces a slowly developing chemosensory-dependent blood pressure elevation ascribed in part to NMDA receptor-dependent plasticity and reduced nitric oxide (NO) signaling in the carot ... Full text Cite

The suspension system of the 2009 cooper union fsae vehicle: A comprehensive design review

Conference SAE International Journal of Passenger Cars - Mechanical Systems · August 1, 2010 This work details the process employed to design the 2009 Cooper Union FSAE® suspension system, spanning the overarching design philosophy, configuration selection, analysis, fabrication, and implementation, while offering recommendations to those especial ... Full text Cite

Advanced development and dynamometer tuning of a Suzuki GSXR 600cc engine for an FSAE® vehicle

Conference SAE Technical Papers · January 1, 2010 The engine tuning study presented here serves as an introduction to the basic concepts of implementing a motorcycle engine on an eddy current dynamometer test stand. This work represents the first engine tuning effort of a young FSAE® team and depicts the ... Full text Cite

An onboard telemetry system for low-level electrical signals

Conference SAE Technical Papers · January 1, 2010 A low-cost, high precision strain gauge data acquisition system was designed and implemented to aid in optimizing the design of suspension and steering members in an FSAE vehicle. The primary focus of the project was to capture load limits in A-arms, steer ... Full text Cite

A cost-effective engine-in-the-loop powertrain testing system

Conference SAE Technical Papers · January 1, 2010 The increasing push to accelerate the product design process and to minimize physical testing expense has promoted the development of hardware-in-the-loop testing procedures which couple well-defined virtual models with physical systems. Clear advantages i ... Full text Cite

Variable runner length intake manifold design: An interim progress report

Conference SAE Technical Papers · January 1, 2010 Manifold tuning has long been a critical facet of engine design and performance optimization. This paper details the design, analysis, and initial fabrication of a variable runner length intake manifold for a restricted 2003 Suzuki GSXR 600 engine. A serie ... Full text Cite

Design under uncertainty and assessment of performance reliability of a dual-use medium truck with hydraulic-hybrid powertrain and fuel cell auxiliary power unit

Conference SAE Technical Papers · January 1, 2005 Medium trucks constitute a large market segment of the commercial transportation sector, and are also used widely for military tactical operations. Recent technological advances in hybrid powertrains and fuel cell auxiliary power units have enabled design ... Full text Cite

Simulation-based optimal design of heavy trucks by model-based decomposition: An extensive analytical target cascading case study

Journal Article International Journal of Heavy Vehicle Systems · January 1, 2004 We present the findings of an extensive case study for the decomposed, simulation-based, optimal design of an advanced technology heavy truck by means of analytical target cascading. The use of a series hybridelectric propulsion system, in-hub motors, and ... Full text Cite

Development of a neural network model of an advanced, turbocharged diesel engine for use in vehicle-level optimization studies

Conference Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering · January 1, 2004 The following work documents the development of an artificial neural network (ANN) model of an advanced, turbocharged diesel engine, and its implementation within an overall vehicle simulation. The purpose of this research was to create a model that would ... Full text Cite

Target cascading in vehicle redesign: A class VI truck study

Journal Article International Journal of Vehicle Design · January 1, 2002 The analytical target cascading process is applied to the redesign of a U.S. class VI truck. Necessary simulation and analysis models for predicting vehicle dynamics, powertrain, and suspension behaviour are developed. Vehicle design targets that include i ... Full text Cite

Optimization of advanced engine controls for conventional vehicles: A driving cycle perspective

Conference ASME International Mechanical Engineering Congress and Exposition, Proceedings · January 1, 2002 A controls optimization methodology for advanced diesel engines, as they are utilized in a specific driving cycle, is addressed in this work. The technique illustrated here accounts for realistic engine use regimes encountered during the FTP driving schedu ... Full text Cite

Analytical target cascading for the design of an advanced technology heavy truck

Conference ASME International Mechanical Engineering Congress and Exposition, Proceedings · January 1, 2002 Analytical target cascading (ATC) is a methodology that can be used during the early development stages of large and complex systems for propagating desirable overall product targets to appropriate individual specifications for the various subsystems and c ... Full text Cite

The reverse engineering of a turbocharged diesel engine through a unified systems approach

Conference SAE Technical Papers · January 1, 2001 The need for a rigorous systems engineering approach to automotive powertrains has been addressed in this work from the perspective of the diesel engine. A high-fidelity engine simulation has been integrated with a total vehicle model for the purpose of re ... Full text Cite

Development and use of a regenerative braking model for a parallel hybrid electric vehicle

Conference SAE Technical Papers · January 1, 2000 A regenerative braking model for a parallel Hybrid Electric Vehicle (HEV) is developed in this work. This model computes the line and pad pressures for the front and rear brakes, the amount of generator use depending on the state of deceleration (i.e. the ... Full text Cite

Optimization Approach to Hybrid Electric Propulsion System Design

Journal Article Mechanics of Structures and Machines · January 1, 1999 Environmentally friendly ground vehicles with range and performance capabilities surpassing those of conventional vehicles require a careful balance among competing goals for fuel efficiency, performance, and emissions. The research objective here is to in ... Full text Cite