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pulse thermographic process

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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...
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
... reconstruction ( Ref 15 ) analyze the time evolution of the heating process. Pulse phase analysis is based on the phase of the Fourier transform of a pixel’s heating and cooling profile. The time lag from a more distant source gives a delayed phase. The signal reconstruction approach represents the heating and...
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
... nonhomogeneous, anisotropic characteristics, pose significant challenges for defect detection and materials property characterization. Throughout their life cycle, composites are susceptible to the formation of many possible defects, primarily due to their multiple-step production process, nonhomogeneous nature...
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
... process. Resistance and hydrogen probes monitor on-line corrosion in reactor cooling waters, oil pipelines, and refineries ( Ref 1 , 2 ). The location and monitoring of these probes are critical for obtaining meaningful data. NACE Standard, RP0189-95 discusses such methods for on- line monitoring of...
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
... materials property characterization. Throughout their life cycle, composites are susceptible to the formation of many possible defects, primarily due to their multiple-step production process, nonhomogeneous nature, and brittle matrix. These defects include delaminations, matrix cracking, fiber fracture...
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
..., then all items within that batch and with similar manufacturing process parameters are deemed to be acceptable; or (3) sample NDE where random or worst-case/highest susceptibility components are targeted for inspection and serve as harbingers of the condition of similar untested components. Selection...
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
... broad categories: quantum detectors and thermal/nonquantum detectors. Before getting into practical considerations for generating TSA data and discussing exactly how TSA data can be captured, it is instructive to examine the process from a more theoretical perspective. In the previous section...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006409
EISBN: 978-1-62708-192-4
... can be defined as the transformation of frictional energy produced during a friction process. The temperature rise depends on intrinsic and extrinsic parameters such as material properties, tribological conditions, and ambient conditions. In dry sliding contact, so-called friction materials are...