Roy Mcgrann

Binghamton University | SUNY Binghamton · Department of Mechanical Engineering

In all forms of education, the method of representation of the concepts presented has a strong effect on both the learning of the students as well as the overall language and processes that the students will use when dealing with those concepts. With a focus specifically on mechanical engineering education, this paper provides a review of the role...

This paper analyzes the implementation of a restructured model for activity sections in a first-year engineering program led by graduate teaching assistants. The aim of the new model is to increase student-centered learning and to provide for more uniformity amongst sections led by different graduate teaching assistants. In this program, all freshm...

Retention of material taught to students can be affected by their active participation in a laboratory. The purpose of this active learning memory retention study is to determine how learning, varying active or passive participation, affects memory retention. This paper uses a weekly laboratory in a first-year engineering course as an example. We c...

In most capstone engineering projects, it is not unlikely to have collaborative work between engineers of different disciplines, but few projects incorporate the work of disciplines outside of the engineering school. This paper is a case study of a student initiated capstone engineering project which incorporates collaborative work between engineer...

SOCRATES (Student Oriented Creative Resource for the Assessment and Teaching of Engineering Skills) will be an automated computer-based system for simulating the Socratic Method of learning in the subject area of Probability and Statistics. The goal is for the student to be an active partner in the learning process using directed self-reflections....

Fuzzy logic is a topic traditionally taught in artificial intelligence, machine learning, and robotics courses. Students receive the necessary mathematical and theoretical foundation in lecture format. The final learning experience may require that students create and code their own fuzzy logic application that solves a real world problem. This can...

The purpose of this special session is to continue the conversation began at FIE 2007 that asked the question “Can philosophy of engineering education improve the practice of engineering education? The session is summarised on http://www.ws. binghamton. edu/PhilEngEd/ It has become clear that this debate fits in with a broader and international deb...

In reflecting on the philosophy of engineering education as a distinct field, questions from other fields of philosophy are encountered. Among these, in addition to philosophy of education, are: ethics, epistemology, ontology, philosophy of science, and philosophy of technology. Within the philosophy of technology, a discussion of ldquophilosophy o...

As practitioners of engineering education, reflecting on our profession, we propose the question: Can philosophy of engineering education improve the practice of engineering education? It is intended to seek through discussion answers to such questions as - Is a philosophy of engineering education distinct from a philosophy of education? What are t...

Teaching effective communication skills to engineering students, especially first year students in large classes, can be a time-consuming, labor-intensive endeavor. This paper describes an instructional system that employs undergraduate course assistants (UCA's) from the liberal arts college, typically the English department, to promote effective w...

This interactive session will demonstrate the use of undergraduate course assistants (UCAs) from liberal arts majors, typically the English department, to promote the effective written communication skills of freshman engineering students. The session demonstrates a collaborative learning experience that will allow participants to create a similar...

Cyclic, mechanical fatigue testing of coated materials has increased with the wider use of thermal spray coatings on components experiencing fatigue loading. Fatigue testing of coated specimens presents all of the difficulties associated with fatigue testing of uncoated specimens and several difficulties that do not arise when testing uncoated spec...

Cyclic, mechanical fatigue testing of coated materials has increased with the wider use of thermal spray coatings on components experiencing fatigue loading. Fatigue testing of coated specimens presents all of the difficulties associated with fatigue testing of uncoated specimens and several difficulties that do not arise when testing uncoated spec...

Thermal spray coatings are subjected to mechanical loadings in many applications, and there is a need to evaluate the mechanical properties of these coatings. Mechanical properties of interest in the performance of thermal spray coatings include fatigue life, wear resistance, bond strength. Young's modulus, Poisson's ratio, and residual stresses. O...

In situ values of Young's modulus and Poisson's ratio for thermal spray coatings are needed to evaluate properties and characteristics of thermal spray coatings such as residual stresses, in-service stresses, bond strength, fracture toughness, and fatigue crack growth rates. It is important to have methods documented in detail so that people can fo...

Thick thermal spray coatings are used to repair worn parts during aircraft overhaul. The thermal spray coating is used to restore a part to its original dimensions. Characteristics of the as-applied coating that affect the performance of thermal sprayed parts are the residual stress in the coating, the tensile bond strength, the amount of porosity,...

In situ values of Young's modulus and Poisson's ratio for thermal spray coatings are needed to evaluate properties and characteristics of thermal spray coatings such as residual stresses, in-service stresses, bond strength, fracture toughness, and fatigue crack growth rates. It is important to have methods documented in detail so that people can fo...

One candidate alternative to chrome plating and hard anodizing is a tungsten carbide (WC) coating applied by the High Velocity Oxy-Fuel (HVOF) process. HVOF WC coatings are currently being evaluated in many service life tests, including fatigue. The purpose of this paper is to compare the fatigue life of HVOF WC coated specimens with the fatigue li...

One factor that affects the suitability of tungsten carbide (WC) coatings for wear and corrosion control applications is the fatigue life of the coated part. Coatings, whether anodized or thermal spray coated, can reduce the fatigue life of a part compared to an uncoated part. This study compares the fatigue life of uncoated and thermal spray coate...

The acceptance of thermal spray coatings in many applications depends on the effect of the coating on the fatigue performance of the coated part. One of the factors that influences the fatigue life of thermal spray-coated components is the residual stress in the coating. This study investigates the fatigue performance of tungsten carbide–cobalt (WC...

Tungsten carbide thermal spray coatings have been used for more than twenty years in the commercial aircraft industry in applications such as turbine blade and flap-track wear surfaces. Additionally, the evaluation of tungsten carbide (WC) coatings to replace chrome plating in other aircraft applications has been underway for several years. For exa...

Tungsten carbide thermal spray coatings have been used for more than twenty years in the commercial aircraft industry in applications such as turbine blade and flap-track wear surfaces. Additionally, the evaluation of tungsten carbide (WC) coatings to replace chrome plating in other aircraft applications has been underway for several years. For exa...

Tungsten caibide (WC) thermal spray coatings are being used for wear protection on selected components of aircraft. Tungsten carbide coatings are being used on aircraft flap tracks and fan and compressor blade mid-span dampers. However, a larger use of tungsten carbide coatings is being considered for other commercial aircraft applications where it...

The Young's modulus of the ceramic top coat of a plasma sprayed thermal barrier coating (TBC) has been reported to vary by as much as a factor of three with changes in processing parameters and by as much as a factor of four due to prolonged thermal exposure. Since the residual stress is expected to vary directly with the modulus of the ceramic lay...

Tungsten carbide (WC) thermal spray coatings applied by the high velocity oxy-fuel (HVOF) process are considered the leading candidates for replacement of hard chrome plating. This article describes the decision-making process followed to establish the acceptability of WC thermal spray coatings for aircraft landing gear applications. Descriptions o...

To improve gas turbine and diesel engine performance using thermal barrier coatings (TBC's) requires an understanding of the factors that influence the in-service behavior of thermal barrier coatings. One of the many factors related to coating performance is the state of stress in the coating. The total stress state is composed of the stresses due...

Thermal barrier coatings are used in several industries to improve thermal efficiency, for example, of gas turbine engines. The performance and life of thermal barrier coated components depend on many factors. One important factor is the residual stresses in the coating and substrate. Residual stresses can be influenced by the parameters of the app...

Tungsten carbide cobalt thermal spray coatings are used in the aircraft industry to reduce wear damage of lightweight metals such as titanium The performance and life of tungsten carbide (WC-Co) coated titanium materials depend on many factors. An important factor that has received increased attention in thermal spray research is the residual stres...

Residual stresses are inherent in thermal barrier coatings (TBC's) and can influence in-service performance and life of the coatings. Therefore, the effective design and processing of TBC's requires knowledge about residual stress generation and the effect of residual stresses on TEC life. Understanding residual stress generation and the effects on...