Dr. James R. Lhota Profile

Dr. James R. Lhota

at Thermal Wave Imaging Inc

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 22 April 2009 Paper

Measurement limits in flash thermography

Steven Shepard, James Lhota, Tasdiq Ahmed

Proceedings Volume 7299, 72990T (2009) https://doi.org/10.1117/12.820062

KEYWORDS: Cameras, Infrared cameras, Thermography, Signal processing, Diffusion, Nondestructive evaluation, Infrared technology, Quantization, Temperature metrology, Aluminum

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SPIE Journal Paper | 1 May 2007

To reduce costs and facilitate automation in the automotive industry, adhesive bonding has gained popularity as a replacement for conventional mechanical fasteners such as bolts, screws, rivets, and welding. Adhesive bonding is particularly useful for bon

Steven Shepard, Julin Hou, James Lhota, Joe Golden

OE, Vol. 46, Issue 05, 051008, (May 2007) https://doi.org/10.1117/12.10.1117/1.2741274

KEYWORDS: Thermography, Inspection, Diffusion, Interfaces, Nondestructive evaluation, Optical engineering, Manufacturing, Thermal modeling, Signal processing, Visualization

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SPIE Journal Paper | 1 May 2007

Review and comparison of shearography and pulsed thermography for adhesive bond evaluation

Y.Y. Hung, Nelson Ng, Rolly Ng, Steven Shepard, YuLin Hou, James Lhota

OE, Vol. 46, Issue 05, 051007, (May 2007) https://doi.org/10.1117/12.10.1117/1.2741277

KEYWORDS: Shearography, Thermography, Adhesives, Aluminum, Inspection, Nondestructive evaluation, Fringe analysis, Optical engineering, Interfaces, Cameras

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Proceedings Article | 18 April 2006 Paper

Reference-free analysis of flash thermography data

Steven Shepard, Yulin Hou, Tasdiq Ahmed, James Lhota

Proceedings Volume 6205, 620513 (2006) https://doi.org/10.1117/12.669396

KEYWORDS: Neodymium, Thermography, Diffusion, Copper, Cameras, Nondestructive evaluation, Infrared cameras, Image analysis, Thermal modeling, Data modeling

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Proceedings Article | 28 March 2005 Paper

Thermographic measurement of thermal barrier coating thickness

Steven Shepard, Yu Hou, James Lhota, David Wang, Tasdiq Ahmed

Proceedings Volume 5782, (2005) https://doi.org/10.1117/12.606124

KEYWORDS: Coating, Infrared cameras, Cameras, Thermography, Translucency, Diffusion, Mid-IR, Photons, Nondestructive evaluation, Infrared radiation

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Proceedings Article | 28 March 2005 Paper

Flash duration and timing effects in thermographic NDT

Steven Shepard, James Lhota

Proceedings Volume 5782, (2005) https://doi.org/10.1117/12.606122

KEYWORDS: Cameras, Infrared cameras, Thermography, Thermal modeling, Sensors, Temperature metrology, Photons, Infrared radiation, Nondestructive evaluation, Data modeling

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Proceedings Article | 12 April 2004 Paper

Blind characterization of materials using single-sided thermography

Steven Shepard, James Lhota, Yu Lin Hou, Tasdiq Ahmed

Proceedings Volume 5405, (2004) https://doi.org/10.1117/12.546596

KEYWORDS: Thermography, Calibration, Infrared cameras, Nondestructive evaluation, Cameras, Temperature metrology, Statistical analysis, Time metrology, Data acquisition, Deconvolution

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Proceedings Article | 12 April 2004 Paper

Experimental considerations in vibrothermography

Steven Shepard, Tasdiq Ahmed, James Lhota

Proceedings Volume 5405, (2004) https://doi.org/10.1117/12.546599

KEYWORDS: Infrared cameras, Inspection, Thermography, Cameras, Acoustics, Solids, Nondestructive evaluation, Visualization, Signal processing, Reflection

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SPIE Journal Paper | 1 May 2003

Reconstruction and enhancement of active thermographic image sequences

Steven Shepard, James Lhota, Bruce Rubadeux, David Wang, Tasdiq Ahmed

OE, Vol. 42, Issue 05, (May 2003) https://doi.org/10.1117/12.10.1117/1.1566969

KEYWORDS: Infrared cameras, Thermography, Signal to noise ratio, Cameras, Signal processing, Image enhancement, Image processing, Diffusion, Infrared imaging, Data acquisition

Proceedings Article | 1 April 2003 Paper

Spatial-temporal signal processing for subsurface thermographic imaging

Steven Shepard, James Lhota

Proceedings Volume 5073, (2003) https://doi.org/10.1117/12.497523

KEYWORDS: Thermography, Visualization, Infrared cameras, Image processing, Cameras, Signal processing, Signal to noise ratio, Nondestructive evaluation, Temperature metrology, Infrared imaging

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Proceedings Article | 18 June 2002 Paper

Reconstruction and enhancement of thermographic sequence data

Steven Shepard, D. Wang, James Lhota, Bruce Rubadeux, Tasdiq Ahmed

Proceedings Volume 4704, (2002) https://doi.org/10.1117/12.470711

KEYWORDS: Thermography, Infrared cameras, Infrared imaging, Cameras, Nondestructive evaluation, Diffusion, Defect detection, Neodymium, Data acquisition, Signal to noise ratio

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Proceedings Article | 15 March 2002 Paper

Enhancement and reconstruction of thermographic NDT data

Steven Shepard, James Lhota, Bruce Rubadeux, Tasdiq Ahmed, D. Wang

Proceedings Volume 4710, (2002) https://doi.org/10.1117/12.459603

KEYWORDS: Thermography, Infrared cameras, Nondestructive evaluation, Infrared imaging, Cameras, Diffusion, Visualization, Defect detection, Visual analytics, Data acquisition

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Proceedings Article | 3 August 2001 Paper

Quantification and automation of pulsed thermographic NDE

Steven Shepard, James Lhota, Tasdiq Ahmed, Bruce Rubadeux, D. Wang

Proceedings Volume 4336, (2001) https://doi.org/10.1117/12.435577

KEYWORDS: Signal processing, Thermography, Cameras, Nondestructive evaluation, Data storage, Image processing, Interference (communication), Signal to noise ratio, Data acquisition, Data conversion

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Proceedings Article | 13 May 2000 Paper

Systems-based approach to thermographic NDE

Steven Shepard, Tasdiq Ahmed, James Lhota, Bruce Rubadeux

Proceedings Volume 3993, (2000) https://doi.org/10.1117/12.385487

KEYWORDS: Thermography, Nondestructive evaluation, Inspection, Modulation transfer functions, Modulation, Spatial frequencies, Image processing, Imaging systems, Cameras, Calibration

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Proceedings Article | 30 March 2000 Paper

Onward and inward: extending the limits of thermographic NDE

Steven Shepard, James Lhota, Bruce Rubadeux, Tasdiq Ahmed

Proceedings Volume 4020, (2000) https://doi.org/10.1117/12.381551

KEYWORDS: Modulation, Image processing, Nondestructive evaluation, Thermography, Inspection, Spatial frequencies, Point spread functions, Defect detection, Calibration, Visualization

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Showing 5 of 15 publications

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