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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
Publisher: American Society of Mechanical Engineers
Paper No: QNDE2022-98270
https://doi.org/10.1115/QNDE2022-98270
View Paper titled, Guided Waves in Pipes Versus Lamb Waves in Plates - A Convergence Analysis
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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
Publisher: American Society of Mechanical Engineers
Paper No: QNDE2021-75053
https://doi.org/10.1115/QNDE2021-75053
View Paper titled, Features of Guided Waves Propagating in a Honeycomb Sandwich Structure
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Topics: Honeycomb structures, Sandwich structures, Waves, Nondestructive evaluation, Materials properties, Aerospace industry
Journal Articles

Special Issue: Quantitative Nondestructive Evaluation

Shiv Joshi, Ajit Mal, Xiuming Wang
Journal: Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
Publisher: ASME
Article Type: Guest Editorial
ASME J Nondestructive Evaluation. August 2020, 3(3): 030301.
Paper No: NDE-20-1038
https://doi.org/10.1115/1.4047467
Published Online: June 24, 2020
View Article titled, Special Issue: Quantitative Nondestructive Evaluation
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Topics: Nondestructive evaluation
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
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2020, 3(4): 041102.
Paper No: NDE-20-1004
https://doi.org/10.1115/1.4046946
Published Online: May 11, 2020
View Article titled, Modeling Ultrasonic Elastic Waves in Fiber-Metal Laminate Structures in Presence of Sources and Defects
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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
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. August 2020, 3(3): 031110.
Paper No: NDE-19-1080
https://doi.org/10.1115/1.4046725
Published Online: April 21, 2020
View Article titled, An Improved Damage Index for Nondestructive Evaluation of a Disbond in Honeycomb Sandwich Structure Using Guided Waves
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Topics: Damage, Honeycomb structures, Nondestructive evaluation, Sandwich structures, Signals, Waves, Excitation
Journal Articles

Core-Skin Disbond Detection in a Composite Sandwich Panel Using Guided Ultrasonic Waves

Christoph Schaal, Ajit Mal
Journal: Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
Publisher: ASME
Article Type: Research-Article
ASME J Nondestructive Evaluation. February 2018, 1(1): 011006–011006-8.
Paper No: NDE-17-1034
https://doi.org/10.1115/1.4037544
Published Online: September 29, 2017
View Article titled, Core-Skin Disbond Detection in a Composite Sandwich Panel Using Guided Ultrasonic Waves
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Topics: Composite materials, Damage, Scattering (Physics), Skin, Ultrasonic waves, Waves, Signals, Honeycomb structures, Simulation
Proceedings Papers

Guided Waves in a Plate With a Delamination-Like Discontinuity

Christoph Schaal, Ajit Mal
Proc. ASME. IMECE2016, Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis, V009T17A008, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-68193
https://doi.org/10.1115/IMECE2016-68193
View Paper titled, Guided Waves in a Plate With a Delamination-Like Discontinuity
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Topics: Delamination, Waves, Nondestructive evaluation, Aerospace industry, Composite materials, Cross section (Physics), Design, Electromagnetic scattering, Experimental methods, Flow (Dynamics)
Proceedings Papers

A Vibration and Wave Propagation Based Methodology for Near Real-Time Damage Monitoring of Composite Structures

Sauvik Banerjee, Fabrizio Ricci, Ajit Mal
Proc. ASME. IMECE2007, Volume 9: Mechanical Systems and Control, Parts A, B, and C, 73-80, November 11–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2007-42095
https://doi.org/10.1115/IMECE2007-42095
View Paper titled, A Vibration and Wave Propagation Based Methodology for Near Real-Time Damage Monitoring of Composite Structures
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Topics: Composite materials, Damage, Vibration, Wave propagation, Sensors, Signals, Algorithms, Computer software, Data acquisition, Frequency response
Journal Articles

Calculation of the Response of a Composite Plate to Localized Dynamic Surface Loads Using a New Wave Number Integral Method

Sauvik Banerjee, Ph.D. Student, Assoc. Mem. ASME,, William Prosser, Ajit Mal, Fellow ASME
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. January 2005, 72(1): 18–24.
https://doi.org/10.1115/1.1828064
Published Online: February 1, 2005
View Article titled, Calculation of the Response of a Composite Plate to Localized Dynamic Surface Loads Using a New Wave Number Integral Method
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Topics: Composite materials, Graphite, Stress, Waves, Plates (structures), Laminates, Anisotropy, Epoxy adhesives, Epoxy resins
Journal Articles

Erratum: “A Volume Integral Equation Technique for Multiple Inclusion and Crack Interaction Problems” [ASME Journal of Applied Mechanics, 1997, 64(1), pp. 23–31]

Jungki Lee, Ajit Mal
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Errata
J. Appl. Mech. December 1998, 65(4): 1068.
https://doi.org/10.1115/1.2791906
Published Online: December 1, 1998
View Article titled, Erratum: “A Volume Integral Equation Technique for Multiple Inclusion and Crack Interaction Problems” [ASME Journal of Applied Mechanics, 1997, 64(1), pp. 23–31]
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Topics: Engineering mechanics, Fracture (Materials), Integral equations
Journal Articles

A Volume Integral Equation Technique for Multiple Inclusion and Crack Interaction Problems

Jungki Lee, Ajit Mal
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. March 1997, 64(1): 23–31.
https://doi.org/10.1115/1.2787282
Published Online: March 1, 1997
View Article titled, A Volume Integral Equation Technique for Multiple Inclusion and Crack Interaction Problems
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Topics: Fracture (Materials), Integral equations, Stress, Microcracks, Solids