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infrared pulse thermography

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003657
EISBN: 978-1-62708-182-5
... Abstract This article begins with an overview of the various aspects of infrared pulse thermography used to detect disbondments, delaminations, and generalized corrosion. It describes the distinctive phases of the pulse thermographic process and the key components that are required to perform...
Image
Published: 01 January 2001
Fig. 38 Energy conversion in pulsed thermography. (a) A brief light pulse uniformly heats the sample surface. (b) Infrared radiation is emitted uniformly from the surface as thermal energy from the surface diffuses toward the interior of the sample. (c) Increased infrared radiation More
Image
Published: 01 August 2018
Fig. 38 Energy conversion in pulsed thermography. (a) A brief light pulse uniformly heats the sample surface. (b) Infrared radiation is emitted uniformly from the surface as thermal energy from the surface diffuses toward the interior of the sample. (c) Increased infrared radiation More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006464
EISBN: 978-1-62708-190-0
... surface. This article discusses the strategies for implementing thermography for NDE, including the steady-state/whole-body approach and transient heat conduction. It describes the most common signal-processing methods, such as thermographic signal reconstruction, lock-in thermography, and pulsed-phase...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006444
EISBN: 978-1-62708-190-0
... – 1854 14. Maldague X. and Marinetti S. , Pulse Phase Infrared Thermography , J. Appl. Phys ., Vol 79 ( No. 5 ), 1996 , p 2694 – 2698 10.1063/1.362662 15. Holland S. D. , Thermographic Signal Reconstruction for Vibrothermography , Infrared Phys. Techn ., Vol 54...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006453
EISBN: 978-1-62708-190-0
... and selective excitation configuration of the signal-generation mechanisms in thermal nondestructive evaluation methods. The three widely used approaches to TNDE are surface-excited thermography, vibrothermography, and thermoelastic stress analysis. The article provides information on the common features...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006451
EISBN: 978-1-62708-190-0
... stress on the surface of a part subjected to time-varying loads. Thermoelastic stress analysis differs from other thermal techniques in that it does not measure heat transfer through a part due to an externally applied excitation, as in pulse thermography or vibrothermography, but instead it measures...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0007023
EISBN: 978-1-62708-439-0
...) and x-ray computed tomography (XCT), would potentially have better results, but integration and development are more complex and expensive, that is, with XCT. Although TT has some limitations in detecting surface defects in AM parts, new methods such as pulsed thermography (PT) and step-heating...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... are not necessarily optimal ( Ref 21 ). The temporal pulse width from an improved TEA carbon dioxide laser yields a useful energy for ultrasound generation in the first 100 ns that varies between 6 and 15% of the total energy. Recent research has identified the use of mid-infrared lasers in the 3 to 4 μm (120...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
..., radiography, X-ray computed tomography, thermography, low-frequency vibration methods, acoustic emission, eddy current testing, optical holography, and shearography. The article presents some examples are for fiber-reinforced polymer-matrix composites. Many of the techniques have general applicability...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.9781627081900
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003653
EISBN: 978-1-62708-182-5
... or infrared light, and some unique methods utilizing reflected and amplified light to look at surface topography, triboluminescent sensing, thermography, and the superconducting quantum interference device (SQUID). Reports describing these methods are included in NACE Symposia on corrosion monitoring...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006936
EISBN: 978-1-62708-395-9
... the most promising are infrared thermography and laser shearography, which excel at detecting defects that are parallel to the inspection surface, such as delaminations and disbonds. These methods tend to be less quantitative and less penetrating, but they offer advantages in speed over ultrasonic systems...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003431
EISBN: 978-1-62708-195-5
... are the technologies of choice in determining composite quality. Continuous improvement research has developed additional inspection methods, such as leaky Lamb wave, polar backscattering, nonlinear acoustics, ultrasonic, radiography, computed tomography, and infrared thermography, to name a few. The continued...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
... “steer” the beam by pulsing a large number of adjacent transducers on a single PAUT probe. This method is also able to direct the beam around angles and corners such as T and L joints, where it is difficult to obtain UT information with single element UT probes. The angle beam UT techniques can also...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
..., ultrasound, radiography, penetrant test, magnetic particle test, leak test, eddy current tests, potential drop tests, flash and vibro thermography, shearography, acoustic emissions, and many other methods. This article provides discussion on general NDE science and considerations for specific technique...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005553
EISBN: 978-1-62708-174-0
... of the more commonly applied sensing techniques for arc welding control. Arc Sensing Arc sensing (also commonly referred to as through-the-arc sensing) monitors the change in current (constant voltage power sources) or voltage (constant current and pulsed current power sources) in the arc. Systems...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003459
EISBN: 978-1-62708-195-5
... for detecting delaminations parallel to the plane of the x-ray image. Thermography Thermography uses an infrared camera to videotape parts as they are heated or cooled and uses the visible thermal differences to extract information about the part. It is useful in bondline inspection, detection...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006968
EISBN: 978-1-62708-439-0
... M.A. , and Wicker R.B. , Approximation of Absolute Surface Temperature Measurements of Powder Bed Fusion Additive Manufacturing Technology Using In Situ Infrared Thermography , Addit. Manuf. , Vol 5 , 2015 , p 31 – 39 10.1016/j.addma.2014.12.001...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006564
EISBN: 978-1-62708-290-7
... monitoring include optical and thermal methods that monitor light reflected or emitted in the visible and infrared wavelengths, respectively. Monitoring methods for laser directed-energy deposition (DED) discussed are those that measure the size and shape of the melt pool, the temperature of the melt pool...