Dr. Valery F. Godinez-Azcuaga Profile

Dr. Valery F. Godinez-Azcuaga

at MISTRAS Group Inc

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 18 April 2022 Presentation + Paper

Detecting thermal crack growth on a large additive manufactured structure using acoustic emission

Ryan Spencer, Miguel González Núñez, Hossain Saboonchi, Valery Godinez-Azcuaga, Uday Vaidya, Vlastimil Kunc, Ahmed Arabi Hassen

Proceedings Volume 12047, 120470W (2022) https://doi.org/10.1117/12.2615094

KEYWORDS: Additive manufacturing, Amplitude modulation, Sensors, Nondestructive evaluation, Composites, Acoustic emission, Fourier transforms, Manufacturing, Acoustics, Wave propagation

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Proceedings Article | 1 April 2019 Presentation + Paper

The identification of accurate and computationally efficient arrival time pick-up method for acoustic tomography

D. Ozevin, L. Zhang, J. Dong, V. Godinez-Azcuaga, Obdulia Ley, H. Saboonchi, E. Lowenhar

Proceedings Volume 10971, 1097114 (2019) https://doi.org/10.1117/12.2515403

KEYWORDS: Sensors, Tomography, Signal to noise ratio, Aluminum, Wave plates, Acoustics, Transmitters, Receivers, Interference (communication), Error analysis

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Proceedings Article | 9 March 2014 Open Access

New strategies for SHM based on a multichannel wireless AE node

Valery Godinez-Azcuaga, Obdulia Ley

Proceedings Volume 9063, 906302 (2014) https://doi.org/10.1117/12.2045343

KEYWORDS: Structural health monitoring, Sensors, Bridges, Data transmission, Data acquisition, Composites, Acoustic emission, Signal processing, Signal analyzers, Electronics

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Proceedings Article | 29 March 2013 Paper

Online acoustic emission monitoring of combustion turbines for compressor stator vane crack detection

Jaya Koduru, Sepandarmaz Momeni, Miguel Gonzalez, Boris Zarate, Valery Godinez

Proceedings Volume 8690, 86900B (2013) https://doi.org/10.1117/12.2013870

KEYWORDS: Sensors, Acoustic emission, Combustion, Failure analysis, Acoustics, Corrosion, Inspection, Waveguides, Data acquisition, Lead

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Proceedings Article | 18 May 2012 Paper

Inspection of composite structures using line scanning thermography

Valery Godinez, Manny Butera, Obdulia Ley

Proceedings Volume 8354, 835406 (2012) https://doi.org/10.1117/12.919176

KEYWORDS: Composites, Thermography, Inspection, Cameras, Nondestructive evaluation, Infrared cameras, Aerospace engineering, Carbon, Ultrasonics, Wind turbine technology

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Proceedings Article | 2 May 2012 Paper

Status in the development of self-powered wireless sensor node for structural health monitoring and prognosis

Paul Ziehl, Victor Giurgiutiu, Valery Godinez-Azcuaga, Justin Farmer, Daniel Inman, Antonio Nanni

Proceedings Volume 8347, 83471V (2012) https://doi.org/10.1117/12.917522

KEYWORDS: Sensors, Energy harvesting, Bridges, Corrosion, Structural health monitoring, Acoustic emission, Wind energy, Prototyping, Data modeling, Composites

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Proceedings Article | 20 April 2011 Paper

Feasibility of using line scanning thermography in NDE of wind turbine blades

Valery Godinez, Obdulia Ley

Proceedings Volume 7983, 79831W (2011) https://doi.org/10.1117/12.880095

KEYWORDS: Thermography, Inspection, Cameras, Nondestructive evaluation, Composites, Foam, Neodymium, Adhesives, Glasses, Wind turbine technology

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Proceedings Article | 20 April 2011 Paper

Adaptation of PWAS transducers to acoustic emission sensors

Sepandarmaz Momeni, Valery Godinez, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 7983, 798327 (2011) https://doi.org/10.1117/12.880157

KEYWORDS: Sensors, Acoustic emission, Transducers, Signal detection, Bridges, Aluminum, Signal to noise ratio, Active sensors, Semiconducting wafers, Interference (communication)

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Proceedings Article | 20 April 2011 Paper

Recent advances in the development of a self-powered wireless sensor network for structural health prognosis

Daniel Inman, Victor Giurgiutiu, Valery Godinez-Azcuaga, Paul Ziehl, Antonio Nanni

Proceedings Volume 7983, 798325 (2011) https://doi.org/10.1117/12.880249

KEYWORDS: Sensors, Bridges, Corrosion, Wind energy, Acoustic emission, Prototyping, Data modeling, Signal detection, Sensor networks, Energy harvesting

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Proceedings Article | 9 April 2010 Paper

Application of line scanning thermography for the detection of interlaminar disbonds in sandwich composite structures

Jaco Schutte, Valery Godinez, Simon Chung, Anthony Caiazzo, Bruce Bandos, Obdulia Ley

Proceedings Volume 7649, 76491B (2010) https://doi.org/10.1117/12.847542

KEYWORDS: Composites, Thermography, Inspection, Solids, Carbon, Cameras, Temperature metrology, Infrared cameras, Nondestructive evaluation, Interfaces

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Proceedings Article | 28 April 2008 Paper

Acoustic emission analysis of full-scale honeycomb sandwich composite curved fuselage panels

Tein-Min Tan, Didem Ozevin, Bao Mosinyi, Frank Leone, John Bakuckas, Jonathan Awerbuch, Alan Lau, Valery Godinez

Proceedings Volume 6934, 69340E (2008) https://doi.org/10.1117/12.776146

KEYWORDS: Sensors, Composites, Acoustic emission, Photogrammetry, Signal generators, Nondestructive evaluation, Inspection, Picture Archiving and Communication System, Data acquisition boards, Research facilities

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Proceedings Article | 19 April 2007 Paper

Integrated acoustic emission/vibration sensor for detecting damage in aircraft drive train components

Athanasios Anastasopoulos, Richard Finlayson, Valery Godínez-Azcuaga, Didem Ozevin, Apostolos Tsimogiannis

Proceedings Volume 6531, 65310C (2007) https://doi.org/10.1117/12.714753

KEYWORDS: Sensors, Acoustic emission, Interference (communication), Data acquisition, Signal processing, Pattern recognition, Signal detection, Acoustics, Nondestructive evaluation, Detection and tracking algorithms

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Diaphragm-type couplings are high misalignment torque and speed transfer components used in aircrafts. Crack development in such couplings, or in the drive train in general, can lead to component failure that can bring down an aircraft. Real time detection of crack formation and growth is important to prevent such catastrophic failures. However, there is no single Nondestructive Monitoring method available that is capable of assessing the early stages of crack growth in such components. While vibration based damage identification techniques are used, they cannot detect cracks until they reach a considerable size, which makes detection of the onset of cracking extremely difficult. Acoustic Emission (AE) can detect and monitor early stage crack growth, however excessive background noise can mask acoustic emissions produced by crack initiation. Fusion of the two mentioned techniques can increase the accuracy of measurement and minimize false alarms. However, a monitoring system combining both techniques could prove too large and heavy for the already restricted space available in aircrafts. In the present work, we will present a newly developed integrated Acoustic Emission/Vibration (AE/VIB) combined sensor which can operate in the temperature range of -55°F to 257°F and in high EMI environment. This robust AE/VIB sensor has a frequency range of 5 Hz-2 kHz for the vibration component and a range of 200-400 kHz for the acoustic emission component. The sensor weight is comparable to accelerometers currently used in flying aircraft. Traditional signal processing approaches are not effective due to high signal attenuation and strong background noise conditions, commonly found in aircraft drive train systems. As an alternative, we will introduce a new Supervised Pattern Recognition (SPR) methodology that allows for simultaneous processing of the signals detected by the AE/VIB sensor and their classification in near-real time, even in these adverse conditions. Finally, we will discuss the architecture developed to produce a fully autonomous monitoring tool based on the fusion of the AE and Vibration techniques.

Proceedings Article | 9 May 2005 Paper

Development of acoustic health monitoring for railroad tank cars

Richard Finlayson, Jose Penya, Adrian Pollock, Richard Gostautas, Valery Godinez

Proceedings Volume 5770, (2005) https://doi.org/10.1117/12.601772

KEYWORDS: Sensors, Corrosion, Inspection, Acoustics, Fourier transforms, Wave plates, Dispersion, Nondestructive evaluation, Calibration, Picture Archiving and Communication System

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Proceedings Article | 9 May 2005 Paper

Acoustic emission (AE) health monitoring of diaphragm type couplings using neural network analysis

Fong Shu, Valery Godinez-Azcuaga, Bruce O'Donnell, Richard Finlayson

Proceedings Volume 5770, (2005) https://doi.org/10.1117/12.601464

KEYWORDS: Metals, Sensors, Acoustic emission, Signal processing, Software development, Neural networks, Warfare, Picture Archiving and Communication System, Control systems, Data acquisition

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Proceedings Article | 21 July 2004 Paper

Acoustic Emission (AE) of fiberglass insulation material

Valery Godinez, Fong Shu, Richard Finlayson

Proceedings Volume 5392, (2004) https://doi.org/10.1117/12.538066

KEYWORDS: Principal component analysis, Acoustic emission, Picture Archiving and Communication System, Pattern recognition, Statistical analysis, Manufacturing, Data acquisition, Signal generators, Control systems, Inspection

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Proceedings Article | 21 July 2004 Paper

Semi-real-time monitoring of cracking on couplings by neural network analysis of acoustic emission signals

Richard Finlayson, Bruce O'Donnell, Valery Godinez-Azcuaga, Fong Shu

Proceedings Volume 5394, (2004) https://doi.org/10.1117/12.540085

KEYWORDS: Interference (communication), Neural networks, Sensors, Acoustic emission, Signal detection, Data acquisition, Computing systems, Pattern recognition, Signal processing, Acoustics

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Proceedings Article | 5 May 2000 Paper

Acoustic emission structural health management systems (AE-SHMS)

Mark Carlos, Richard Finlayson, Valery Godinez, Ronnie Miller, Mark Friesel

Proceedings Volume 3994, (2000) https://doi.org/10.1117/12.385016

KEYWORDS: Acoustic emission, Composites, Sensors, Acoustics, Neurons, Inspection, Ultrasonics, Rockets, Data processing, Computing systems

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Showing 5 of 17 publications

Conference Committee Involvement (6)

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure X

21 March 2016 | Las Vegas, Nevada, United States

Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure IX

9 March 2015 | San Diego, California, United States

Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security VIII

10 March 2014 | San Diego, California, United States

Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security VII

10 March 2013 | San Diego, California, United States

Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security VI

12 March 2012 | San Diego, California, United States

Showing 5 of 6 Conference Committees

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