Additive Manufacturing (AM) incorporates a group of processes which utilize a layer-based material deposition approach to manufacture parts. These processes are now widely used in the industry as the primary manufacturing process for fabricating high precision parts. The dimensional accuracy of the parts and components manufactured using AM depend mainly on the type of Additive process used and the process parameters. The part build orientation is one of the principal process parameters which has a direct influence on the staircase effect and volume of support structure required for building the part. These factors eventually contribute to the surface finish, dimensional accuracy, and the post-processing requirements. In this paper, an optimization model is developed to obtain the build orientation which will minimize the support structure volume as well as support contact area and maximize the support structure removal while satisfying all the GD&T callouts. The mathematical correlation of cylindricity, flatness, parallelism, and perpendicularity tolerances with build orientation is analyzed and developed. A voxel-based approach is employed to calculate support structure requirement at any part build orientation, while a ray tracing approach is used to calculate the accessibility of supports and identifying removable supports.

little understood question that has motivated her program of research is: How can we effectively and efficiently promote cyberlearning in complex knowledge domains such as STEM (science, technology, engineering and mathematics)? Towards this direction, she (1) investigates the development of higher-order thinking and complex problem-solving competencies following a comprehensive framework that includes cognition, metacognition, cognitive regulation, motivation, emotion, and epistemic beliefs; (2) develops innovative assessment methods that can benchmark progress of learning and the development of complex problem-solving competencies; (3) develops new and effective approaches to design state-of-the-art digital learning environments (such as intelligent tutoring, system dynamics modeling, simulations, virtual reality, and digital games) to facilitate complex problem-solving competencies; and (4) investigates effective ways to prepare teachers and administrators for digital transformation of education to support effective integration and seamless adoption of advanced learning technologies into education. In addition to her work focusing on STEM learning in K-20 educational settings, her research was also carried out in professional contexts including army, aircraft maintenance, air-traffic control, emergency response, environmental sciences, climate change, medical education, instructional design, architecture, construction science, mechanical engineering, industrial engineering, and systems engineering.Uzair Nadeem, Prairie View A&M University I am a junior mechanical engineer at Prairie View A&M University. I currently tutor in UGS NX 7.5, a CAD based class that implements both hand and computer based drafting. My main duty is to lecture the CAD section of the class known as Intro to Mechanical Drawing along with the tutoring or any other related duties that entail. Page 26.737.1 Paper ID #12508Deron Arceneaux , Prairie View A&M University My name is Deron Arceneaux; I am a sophomore at Prairie View A&M University. I am a member of the National Society of Black Engineers, and a member of the American Society of Mechanical Engineers. In these organizations I participated in many community service events, I am a very active member in these organizations. I am also a teachers assistant for the Mechanical Engineering Drawing I, in this class we teach NX 7.5 CAD software.c American Society for Engineering Education, 2015Page 26.737.2 Exploring the Impact of Peer-Generated Screencast Tutorials on Computer-Aided Design Education AbstractThis paper presents the design strategies of an engineering education research project funded by the National Science Foundation (NSF) and discusses the preliminary findings. Study participants were the students who enrolled in the "Mechanical Engineering Drawing" course and learned about computer-aided design (CAD). We grouped students into two sections as control section versus experimental section. Control group students received a traditional and teacher-centered instruction. The scr...

This paper presents the preliminary work of implementing the learning by teaching approach, a student-centered pedagogy, in the Computer-Aided Design (CAD) education. Following an experimental study design, students were grouped into control section and experimental section. In the control section, students received the traditional instructor-centered instruction. In the experimental section, students were assigned into small groups and taught the course content to their peers during the class meeting. The students’ learning outcomes were evaluated, such as life-long learning skill, engineering attitude, and CAD modeling skills using NX. A CAD modeling test was used at the end of semester to assess the students’ CAD modeling skills. The engineering attitude survey and the life-long learning scale were conducted at the beginning and the end of semester. The statistical analyses were performed to examine the impact of activities. The results revealed that the students’ engineering attitude was significantly improved. In addition, experimental group students completed an exit survey that collected their feedback on the teaching activities.

little understood question that has motivated her program of research is: How can we effectively and efficiently promote cyberlearning in complex knowledge domains such as STEM (science, technology, engineering and mathematics)? Towards this direction, she (1) investigates the development of higher-order thinking and complex problem-solving competencies following a comprehensive framework that includes cognition, metacognition, cognitive regulation, motivation, emotion, and epistemic beliefs; (2) develops innovative assessment methods that can benchmark progress of learning and the development of complex problem-solving competencies; (3) develops new and effective approaches to design state-of-the-art digital learning environments (such as intelligent tutoring, system dynamics modeling, simulations, virtual reality, and digital games) to facilitate complex problem-solving competencies; and (4) investigates effective ways to prepare teachers and administrators for digital transformation of education to support effective integration and seamless adoption of advanced learning technologies into education. In addition to her work focusing on STEM learning in K-20 educational settings, her research was also carried out in professional contexts including army, aircraft maintenance, air-traffic control, emergency response, environmental sciences, climate change, medical education, instructional design, architecture, construction science, mechanical engineering, industrial engineering, and systems engineering.Uzair Nadeem, Prairie View A&M University I am a senior mechanical engineer at Prairie View A&M University. I currently tutor in UGS NX 7.5, a CAD based class that implements both hand and computer based drafting, along with solid modeling. My main duty is to lecture the CAD modeling section of the class known as "Intro to Mechanical Drawing" along with the tutoring, and any other related duties that entail. I have also Interned at Kennedy Space Center for NASA as a Systems engineer, that utilized my CAD background in modeling for fluid route configurations for different tank types and commodities. Using Peer-Generated Screencast in Teaching Computer-Aided Design Abstract This paper presents a new method of using peer-generated screencast in the computer-aided design (CAD) education. Instead of using instructor-made screencasts, students were asked to make their own screencasts, review each others" screencasts, and provide feedback. To explore the impact of student-made screencast exercises on students' learning outcomes, we conducted a pretest posttest quasi-experimental research. A life-long learning survey, an engineering attitude survey, an exit project survey, and a CAD modeling exam were used as the study instruments. Among the students enrolled in six different sections of a CAD course, 110 of them completed all research instruments and participated in the study. This is a continuing research project, sponsored by the National Science Foundation, starting from Fall 2014. In Fall 2014 and Spring 2015, students...