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J. P. Oliveira
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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
Open the PDF for Flaw Detection in Wire Arc Additive Manufacturing Using In-Situ Acoustic Sensing and Graph Signal Analysis in another window
Topics: Acoustics, Additive manufacturing, Flaw detection, Signals, Welding, Wire, Electric arcs, Energy resources, Geometry, Joining
Journal Articles

Numerical Simulation of Ultrasonic Spot Welding of Superelastic NiTi Alloys: Temperature Distribution and Deformation Behavior

Yuxin Wang, Sansan Ao, Wei Zhang, Anqi Wang, Mingpeng Cheng, Yi Chen, J. P. Oliveira, Z. Zeng, Zhen Luo
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. August 2022, 144(8): 081003.
Paper No: MANU-21-1476
https://doi.org/10.1115/1.4053523
Published Online: February 16, 2022
View Article titled, Numerical Simulation of Ultrasonic Spot Welding of Superelastic NiTi Alloys: Temperature Distribution and Deformation Behavior
Open the PDF for Numerical Simulation of Ultrasonic Spot Welding of Superelastic NiTi Alloys: Temperature Distribution and Deformation Behavior in another window
Topics: Deformation, Nickel titanium alloys, Temperature, Welding, Pressure, Heat, Temperature distribution, Stress concentration
Journal Articles

Effect of Laser Surfacing on the Microstructure and Mechanical Properties of Ultrasonic Welded NiTi Joints

S. S. Ao, C. J. Li, W. Zhang, J. P. Oliveira, Z. Zeng, Z. Luo
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. January 2022, 144(1): 011003.
Paper No: MANU-21-1078
https://doi.org/10.1115/1.4051330
Published Online: July 1, 2021
View Article titled, Effect of Laser Surfacing on the Microstructure and Mechanical Properties of Ultrasonic Welded NiTi Joints
Open the PDF for Effect of Laser Surfacing on the Microstructure and Mechanical Properties of Ultrasonic Welded NiTi Joints in another window
Topics: Bonding, Deformation, Diffusion (Physics), Fracture (Materials), Joining, Lasers, Mechanical properties, Nickel titanium alloys, Shear (Mechanics), Surface roughness
Journal Articles

Effects of Postweld Heat Treatment on the Phase Transformation and Mechanical Behavior of NiTi Ultrasonic Spot Welded Joints With Al Interlayer

Chunjie Li, Sansan Ao, J. P. Oliveira, Zhi Zeng, Huijie Cui, Zhen Luo
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. October 2020, 142(10): 101006.
Paper No: MANU-20-1223
https://doi.org/10.1115/1.4048002
Published Online: August 27, 2020
View Article titled, Effects of Postweld Heat Treatment on the Phase Transformation and Mechanical Behavior of NiTi Ultrasonic Spot Welded Joints With Al Interlayer
Open the PDF for Effects of Postweld Heat Treatment on the Phase Transformation and Mechanical Behavior of NiTi Ultrasonic Spot Welded Joints With Al Interlayer in another window
Topics: Heat, Heat treating (Metalworking), Mechanical properties, Nickel titanium alloys, Phase transitions, Temperature, Welded joints