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Full-Text Articles in Mechanical Engineering
Work In Progress: Combining Concept Inventories With Rapid Feedback To Enhance Learning, John Chen, Jennifer Kadlowec, Dexter Whittinghill
Work In Progress: Combining Concept Inventories With Rapid Feedback To Enhance Learning, John Chen, Jennifer Kadlowec, Dexter Whittinghill
Mechanical Engineering
In this project our goal is to adapt the Concept Inventory for frequent classroom use, and to implement it in a system to provide rapid feedback to students of their understanding of key concepts being presented. The feedback system acts as the focal point and catalyst to encourage students, working in pairs, to assist each other in correcting misconceptions or deepening each other’s understanding of the topic at hand. Furthermore, the system allows the professor to assess the students’ level of comprehension (or misconception) in a just-in-time fashion, and thus guides his or her pacing and coverage of the material. …
Laser Scanning Thermal Probe: A Novel Approach To Non-Destructive Evaluation, Jacob Kephart, John Chen, Hong Zhang
Laser Scanning Thermal Probe: A Novel Approach To Non-Destructive Evaluation, Jacob Kephart, John Chen, Hong Zhang
Mechanical Engineering
Structuraldefects such as cracks have recently been identifiable through anew nondestructive evaluation (NDE) technique know as sonic IR orthermosonics. However, these defects are depicted through thermal imagining systemas localized "hot spots" indicating a general location of adefect without an accurate portrayal of the dimensions or shapeof the defect. This paper demonstrates a new technique calledLaser Scanning Thermal Probe, LSTP, which utilizes thermography with theuse of heat application in strategic locations to observe spatialheat flow patterns. The LSTP records heat propagation across adefect area previously identified through the thermosonic technique. Thermal gradientswill occur as heat traverses the crack and provide informationto …
Laser Ignition Of Pulverized Coals, John C. Chen, Masayuki Taniguchi, Kiyoshi Narato, Kazuyuki Ito
Laser Ignition Of Pulverized Coals, John C. Chen, Masayuki Taniguchi, Kiyoshi Narato, Kazuyuki Ito
Mechanical Engineering
We present a novel experiment to study the ignition of pulverized coal. A dilute stream of particles is dropped into a laminar, upward-flow wind tunnel with a quartz test section. The gas stream is not preheated. A single pulse from a Nd:YAG laser is focused through the tunnel and ignites the fuel. The transparent test section and cool walls allow for optical detection of the ignition process. In this article we describe the experiment and demonstrate its capabilities by observing the ignition behavior of spherical, amorphous-carbon particles and two coals: an anthracite are a high-volatile bituminous coal. The ignition behaviors …
A Virtual Reality Environment For Multi-Sensor Data Integration, Scott Papson, Joseph Oagaro, Robi Polikar, John Chen, John L. Schmalzel, Shreekanth Mandayam
A Virtual Reality Environment For Multi-Sensor Data Integration, Scott Papson, Joseph Oagaro, Robi Polikar, John Chen, John L. Schmalzel, Shreekanth Mandayam
Mechanical Engineering
Virtual reality (VR) has typically found applications in industrial design, rapid prototyping and advanced scientific visualization. In this paper, we investigate the use of VR for multi-sensor data integration. We attempt to demonstrate that multiple data types-graphical, functional and measurement can be effectively combined inside of a VR environment. This platform allows the user to rapidly sift through large and complex data sets and isolate features of interest. Furthermore, VR environments can be made to evolve based on system data and user input-this provides the ability to develop scenarios that can be used to make informed decisions. Results demonstrating the …
Digital Imaging Experiences For Undergraduate Engineering Students, Kauser Jahan, John Chen, Shreekanth Mandayam, Robert Krchnavek, Beena Sukumaran, Yusuf Mehta, Jennifer Kadlowec, Paris Von Lockette, Robi Polikar
Digital Imaging Experiences For Undergraduate Engineering Students, Kauser Jahan, John Chen, Shreekanth Mandayam, Robert Krchnavek, Beena Sukumaran, Yusuf Mehta, Jennifer Kadlowec, Paris Von Lockette, Robi Polikar
Mechanical Engineering
Our project is an effort by a multidisciplinary team of engineering faculty members at Rowan University to integrate digital imaging technology (DIT) into the undergraduate engineering curriculum. It builds upon the experience and interest of faculty to promote new topics and innovative methods of teaching. The work is an effort to provide students with the skills directly relevant to the evolving needs of the industry and the marketplace. Projects involve the development of digital imaging curriculum and focus on the creation of a leading edge digital imaging laboratory/studio to facilitate the use of nontraditional learning approaches that encourage interactive learning, …