Dr. Ralph Barton Dinwiddie Profile

Dr. Ralph Barton Dinwiddie

Sr. Research Scientist at Oak Ridge National Lab

SPIE Involvement:

Author

Proceedings Article | 19 April 2017 Paper

Understanding the thermal sciences in the electron beam melting process through in-situ process monitoring

J. Raplee, A. Plotkowski, M. Kirka, R. Dinwiddie, R. Dehoff, S. Babu

Proceedings Volume 10169, 101690O (2017) https://doi.org/10.1117/12.2263315

KEYWORDS: Additive manufacturing, Electron beam melting, Fabrication, Calibration, Liquids, Solids, Materials processing, Nondestructive evaluation, Structural health monitoring, Aerospace engineering, Cameras, Infrared cameras, Process control, Infrared imaging, Metals, Thermography

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Proceedings Article | 8 June 2016 Paper

Calibrating IR cameras for in-situ temperature measurement during the electron beam melt processing of Inconel 718 and Ti-Al6-V4

R. Dinwiddie, M. Kirka, P. Lloyd, R. Dehoff, L. Lowe, G. Marlow

Proceedings Volume 9861, 986107 (2016) https://doi.org/10.1117/12.2229070

KEYWORDS: Calibration, Infrared cameras, Cameras, Temperature metrology, Black bodies, Metals, Infrared imaging, Glasses, Manufacturing, Electron beams

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Proceedings Article | 12 June 2014 Paper

Infrared imaging of the polymer 3D-printing process

Ralph Dinwiddie, Vlastimil Kunc, John Lindal, Brian Post, Rachel Smith, Lonnie Love, Chad Duty

Proceedings Volume 9105, 910502 (2014) https://doi.org/10.1117/12.2053425

KEYWORDS: Printing, Carbon, Temperature metrology, Infrared cameras, Infrared imaging, Cameras, Additive manufacturing, Forward looking infrared, Polymers, Long wavelength infrared

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Proceedings Article | 22 May 2013 Paper

Real-time process monitoring and temperature mapping of a 3D polymer printing process

Ralph Dinwiddie, Lonnie Love, John Rowe

Proceedings Volume 8705, 87050L (2013) https://doi.org/10.1117/12.1518454

KEYWORDS: Infrared cameras, Cameras, Infrared imaging, Thermography, Head, Temperature metrology, Printing, Fused deposition modeling, Calibration, 3D printing

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Proceedings Article | 22 May 2013 Paper

Thermographic in-situ process monitoring of the electron-beam melting technology used in additive manufacturing

Ralph Dinwiddie, Ryan Dehoff, Peter Lloyd, Larry Lowe, Joe Ulrich

Proceedings Volume 8705, 87050K (2013) https://doi.org/10.1117/12.2018412

KEYWORDS: Infrared cameras, Metals, Electron beam melting, Infrared imaging, Additive manufacturing, Thermography, Cameras, Mirrors, Glasses, Infrared radiation

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Proceedings Article | 18 April 2006 Paper

Case study of IR reflectivity to detect and document the underdrawing of a 19^th century oil painting

R. Dinwiddie, S. Dean

Proceedings Volume 6205, 620510 (2006) https://doi.org/10.1117/12.669219

KEYWORDS: Infrared imaging, Photography, Infrared radiation, Cameras, Optical filters, Infrared cameras, Infrared photography, Transparency, Infrared detectors, Oxides

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Proceedings Article | 15 March 2002 Paper

IR imaging of integrated circuit power transistors during operation

Hsin Wang, Ralph Dinwiddie, H. Maleki, J. Oglesbee, C. Thougsouk

Proceedings Volume 4710, (2002) https://doi.org/10.1117/12.459555

KEYWORDS: Infrared cameras, Cameras, Infrared imaging, Transistors, Thermography, Lamps, Microscopes, Integrated circuits, Infrared microscopy, Signal generators

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Proceedings Article | 23 March 2001 Paper

Synchronizing the IR camera to capture high-speed thermal transients

Hsin Wang, Ralph Dinwiddie

Proceedings Volume 4360, (2001) https://doi.org/10.1117/12.421024

KEYWORDS: Cameras, Infrared cameras, Clocks, Thermography, High speed cameras, Infrared imaging, Image acquisition, Resistors, Data acquisition, Semiconductors

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Proceedings Article | 30 March 2000 Paper

Application of high-speed IR imaging during mechanical fatigue tests

Hsin Wang, Ralph Dinwiddie, Liang Jiang, Peter Liaw, C. Brooks, D. Klarstrom

Proceedings Volume 4020, (2000) https://doi.org/10.1117/12.381550

KEYWORDS: Infrared imaging, Cameras, Infrared cameras, Temperature metrology, Thermography, Infrared radiation, Nondestructive evaluation, Manufacturing, Scanning electron microscopy, Electron microscopes

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Proceedings Article | 30 March 2000 Paper

Development of a high-speed system for temperature mapping of a rotating target

Dale Hartsock, Ralph Dinwiddie, James Fash, Tom Dalka, Gregory Smith, Yun-Bo Yi, Rena Hecht

Proceedings Volume 4020, (2000) https://doi.org/10.1117/12.381533

KEYWORDS: Sensors, Infrared cameras, Infrared sensors, Imaging systems, Cameras, Calibration, Temperature metrology, Infrared radiation, Infrared imaging, Composites

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Proceedings Article | 19 March 1999 Paper

Time-resolved tribo-thermography

Ralph Dinwiddie, Peter Blau

Proceedings Volume 3700, (1999) https://doi.org/10.1117/12.342327

KEYWORDS: Cameras, Surface finishing, Coating, Aluminum, Thermography, Oxides, Polishing, Infrared imaging, Infrared cameras, Calibration

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Proceedings Article | 26 March 1998 Paper

IR-camera methods for automotive brake system studies

Ralph Dinwiddie, Kwangjin Lee

Proceedings Volume 3361, (1998) https://doi.org/10.1117/12.304744

KEYWORDS: Cameras, Infrared cameras, Calibration, Distortion, Video, Temperature metrology, Infrared radiation, Infrared imaging, Switches, Image acquisition

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Showing 5 of 12 publications

SPIE Conference Volume | 4 May 2010

Thermosense XXXII

SPIE Conference Volume | 23 April 2009

Thermosense XXXI

SPIE Conference Volume | 23 March 2001

Thermosense XXIII

SPIE Conference Volume | 30 March 2000

Thermosense XXII

Conference Committee Involvement (20)

Thermosense: Thermal Infrared Applications XLII

27 April 2020 | Online Only, California, United States

Thermosense: Thermal Infrared Applications XLI

15 April 2019 | Baltimore, MD, United States

Thermosense: Thermal Infrared Applications XL

16 April 2018 | Orlando, FL, United States

Thermosense: Thermal Infrared Applications XXXIX

11 April 2017 | Anaheim, CA, United States

Thermosense: Thermal Infrared Applications XXXVIII

18 April 2016 | Baltimore, MD, United States

Thermosense: Thermal Infrared Applications XXXVII

20 April 2015 | Baltimore, MD, United States

Thermosense: Thermal Infrared Applications XXXVI

5 May 2014 | Baltimore, MD, United States

Thermosense: Thermal Infrared Applications XXXV

30 April 2013 | Baltimore, Maryland, United States

Thermosense: Thermal Infrared Applications XXXIV

23 April 2012 | Baltimore, Maryland, United States

Thermosense: Thermal Infrared Applications XXXIII

26 April 2011 | Orlando, Florida, United States

Thermosense XXXII

6 April 2010 | Orlando, Florida, United States

Thermosense XXXI

14 April 2009 | Orlando, Florida, United States

Thermosense XXX

18 March 2008 | Orlando, Florida, United States

Thermosense XXIX

10 April 2007 | Orlando, Florida, United States

Thermosense XXVIII

17 April 2006 | Orlando (Kissimmee), Florida, United States

Thermosense XXVII

29 March 2005 | Orlando, Florida, United States

Thermosense XXVI

13 April 2004 | Orlando, Florida, United States

Thermosense XXV

22 April 2003 | Orlando, Florida, United States

Thermosense XXIII

16 April 2001 | Orlando, FL, United States

Thermosense XXII

25 April 2000 | Orlando, FL, United States

Showing 5 of 20 Conference Committees

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