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Prahalad Rao
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Proceedings Papers

Flaw Detection in Wire Arc Additive Manufacturing Using In-Situ Acoustic Sensing and Graph Signal Analysis

Benjamin Bevans, André Ramalho, Ziyad Smoqi, Aniruddha Gaikwad, Telmo G. Santos, Prahalad Rao, J. P. Oliveira
Proc. ASME. MSEC2023, Volume 1: Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering, V001T01A005, June 12–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2023-101622
https://doi.org/10.1115/MSEC2023-101622
View Paper titled, Flaw Detection in Wire Arc Additive Manufacturing Using In-Situ Acoustic Sensing and Graph Signal Analysis
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Topics: Acoustics, Additive manufacturing, Flaw detection, Signals, Welding, Wire, Electric arcs, Energy resources, Geometry, Joining
Proceedings Papers

Thermal Modeling in Metal Additive Manufacturing Using Graph Theory: Experimental Validation With In-Situ Infrared Thermography Data From Laser Powder Bed Fusion

Reza Yavari, Richard Williams, Kevin Cole, Paul Hooper, Prahalad Rao
Proc. ASME. MSEC2020, Volume 1: Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation, V001T01A028, September 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2020-8433
https://doi.org/10.1115/MSEC2020-8433
View Paper titled, Thermal Modeling in Metal Additive Manufacturing Using Graph Theory: Experimental Validation With In-Situ Infrared Thermography Data From Laser Powder Bed Fusion
Open the PDF for Thermal Modeling in Metal Additive Manufacturing Using Graph Theory: Experimental Validation With In-Situ Infrared Thermography Data From Laser Powder Bed Fusion in another window
Topics: Additive manufacturing, Cooling, Lasers, Metals, Modeling, Thermography
Proceedings Papers

Predicting Part-Level Thermal History in Metal Additive Manufacturing Using Graph Theory: Experimental Validation With Directed Energy Deposition of Titanium Alloy Parts

Reza Yavari, Jordan Severson, Aniruddha Gaikwad, Kevin Cole, Prahalad Rao
Proc. ASME. MSEC2019, Volume 1: Additive Manufacturing; Manufacturing Equipment and Systems; Bio and Sustainable Manufacturing, V001T01A038, June 10–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2019-3034
https://doi.org/10.1115/MSEC2019-3034
View Paper titled, Predicting Part-Level Thermal History in Metal Additive Manufacturing Using Graph Theory: Experimental Validation With Directed Energy Deposition of Titanium Alloy Parts
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Topics: Additive manufacturing, Heat flux, Metals, Titanium alloys
Proceedings Papers

A Graph Theoretic Approach for Near Real-Time Prediction of Part-Level Thermal History in Metal Additive Manufacturing Processes

Reza Yavari, Kevin D. Cole, Prahalad Rao
Proc. ASME. MSEC2019, Volume 1: Additive Manufacturing; Manufacturing Equipment and Systems; Bio and Sustainable Manufacturing, V001T01A030, June 10–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2019-2875
https://doi.org/10.1115/MSEC2019-2875
View Paper titled, A Graph Theoretic Approach for Near Real-Time Prediction of Part-Level Thermal History in Metal Additive Manufacturing Processes
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Topics: Additive manufacturing, Heat flux, Metals, Theoretical methods
Proceedings Papers

Design Rules and In-Situ Quality Monitoring of Thin-Wall Features Made Using Laser Powder Bed Fusion

Aniruddha Gaikwad, Farhad Imani, Prahalad Rao, Hui Yang, Edward Reutzel
Proc. ASME. MSEC2019, Volume 1: Additive Manufacturing; Manufacturing Equipment and Systems; Bio and Sustainable Manufacturing, V001T01A039, June 10–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2019-3035
https://doi.org/10.1115/MSEC2019-3035
View Paper titled, Design Rules and In-Situ Quality Monitoring of Thin-Wall Features Made Using Laser Powder Bed Fusion
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Topics: Additive manufacturing, Design, Lasers, Thin wall structures
Proceedings Papers

Modeling and Experimental Validation of Part-Level Thermal Profile in Fused Filament Fabrication

Mriganka Roy, Reza Yavari, Chi Zhou, Olga Wodo, Prahalad Rao
Proc. ASME. MSEC2019, Volume 1: Additive Manufacturing; Manufacturing Equipment and Systems; Bio and Sustainable Manufacturing, V001T01A031, June 10–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2019-2897
https://doi.org/10.1115/MSEC2019-2897
View Paper titled, Modeling and Experimental Validation of Part-Level Thermal Profile in Fused Filament Fabrication
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Topics: Manufacturing, Modeling, Thermocouples
Journal Articles

Joint Multifractal and Lacunarity Analysis of Image Profiles for Manufacturing Quality Control

Farhad Imani, Bing Yao, Ruimin Chen, Prahalad Rao, Hui Yang
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. April 2019, 141(4): 044501.
Paper No: MANU-18-1168
https://doi.org/10.1115/1.4042579
Published Online: February 27, 2019
View Article titled, Joint Multifractal and Lacunarity Analysis of Image Profiles for Manufacturing Quality Control
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Topics: Finishes, Fractals, Manufacturing, Process monitoring, Quality control, Spectra (Spectroscopy), Additive manufacturing, Imaging, Machining, Dimensions
Journal Articles

Real-Time Identification of Incipient Surface Morphology Variations in Ultraprecision Machining Process

Prahalad Rao, Satish Bukkapatnam, Omer Beyca, Zhenyu (James) Kong, Ranga Komanduri
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research-Article
J. Manuf. Sci. Eng. April 2014, 136(2): 021008.
Paper No: MANU-11-1393
https://doi.org/10.1115/1.4026210
Published Online: January 16, 2014
View Article titled, Real-Time Identification of Incipient Surface Morphology Variations in Ultraprecision Machining Process
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Topics: Machining, Sensors, Signals, Vibration, Dynamics (Mechanics), Finishes