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Proceedings Papers

Guided Waves in Pipes Versus Lamb Waves in Plates - A Convergence Analysis

Fadhel Alsaffar, Lifu Wang, Ajit Mal, Christoph Schaal
Proc. ASME. QNDE2022, 2022 49th Annual Review of Progress in Quantitative Nondestructive Evaluation, V001T03A005, July 25–27, 2022
Paper No: QNDE2022-98270
DOI: https://doi.org/10.1115/QNDE2022-98270
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Topics: Pipes, Plates (structures), Waves, Nondestructive evaluation, Wall thickness
Proceedings Papers

Features of Guided Waves Propagating in a Honeycomb Sandwich Structure

Lifu Wang, Leonardo Araque, Steffen Tai, Ajit Mal, Christoph Schaal
Proc. ASME. QNDE2021, 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, V001T06A005, July 28–30, 2021
Paper No: QNDE2021-75053
DOI: https://doi.org/10.1115/QNDE2021-75053
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Topics: Honeycomb structures, Sandwich structures, Waves, Nondestructive evaluation, Materials properties, Aerospace industry
Journal Articles

Multi-Objective Collaborative Flexibility Optimization Design of the Strengthening Layer of a Flexible Riser

Zhixun Yang, Lifu Wang, Jun Yan, Dongyan Shi, Zhirui Fan, Lijiang Dai
Journal: Journal of Offshore Mechanics and Arctic Engineering
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. April 2022, 144(2): 021802.
Paper No: OMAE-21-1075
DOI: https://doi.org/10.1115/1.4052934
Published Online: December 2, 2021
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Topics: Design, Flexible risers, Optimization, Stiffness, Torsion, Stress, Pipes, Tension
Proceedings Papers

The Optimization Design of the Cross-Sectional Layout of an Umbilical Based on the Hybrid Genetic Algorithm

Xu Yin, Zhixun Yang, Dongyan Shi, Jun Yan, Lifu Wang, Qingzhen Lu, Geng Tian
Proc. ASME. OMAE2021, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A010, June 21–30, 2021
Paper No: OMAE2021-63384
DOI: https://doi.org/10.1115/OMAE2021-63384
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Topics: Design, Genetic algorithms, Optimization
Proceedings Papers

Topology Optimization Design of Filling Bodies in an Umbilical Based on Moving Morphable Components Theory

Lifu Wang, Zhixun Yang, Jun Yan, Dongyan Shi, Yandong Mao, Pengcheng Zhu
Proc. ASME. OMAE2021, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A011, June 21–30, 2021
Paper No: OMAE2021-63523
DOI: https://doi.org/10.1115/OMAE2021-63523
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Topics: Design, Optimization, Topology
Proceedings Papers

Optimization Design of the Cross-Section of the Umbilical Based on the Pseudo Mechanical Mechanism

Zhixun Yang, Xu Yin, Dongyan Shi, Jun Yan, Lifu Wang, Qingzhen Lu, Qianjin Yue
Proc. ASME. OMAE2020, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A024, August 3–7, 2020
Paper No: OMAE2020-19234
DOI: https://doi.org/10.1115/OMAE2020-19234
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Topics: Design, Optimization, Cables, Fillers (Materials), Ocean engineering, Optical cables, Steel, Algorithms, Cross section (Physics), Manufacturing systems
Journal Articles

Modeling Ultrasonic Elastic Waves in Fiber-Metal Laminate Structures in Presence of Sources and Defects

Steffen Tai, Fumika Kotobuki, Lifu Wang, Ajit Mal
Journal: Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2020, 3(4): 041102.
Paper No: NDE-20-1004
DOI: https://doi.org/10.1115/1.4046946
Published Online: May 11, 2020
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Topics: Displacement, Electromagnetic scattering, Excitation, Fibers, Laminates, Metals, Modeling, Radiation scattering, Scattering (Physics), Transducers
Journal Articles

An Improved Damage Index for Nondestructive Evaluation of a Disbond in Honeycomb Sandwich Structure Using Guided Waves

Lifu Wang, Fei Gao, Yichi Zhang, Leonardo Araque, Steffen Tai, Bhav Patel, Ajit Mal
Journal: Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
Article Type: Research Papers
ASME J Nondestructive Evaluation. August 2020, 3(3): 031110.
Paper No: NDE-19-1080
DOI: https://doi.org/10.1115/1.4046725
Published Online: April 21, 2020
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Topics: Damage, Honeycomb structures, Nondestructive evaluation, Sandwich structures, Signals, Waves, Excitation