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contact thermographic inspection

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003239
EISBN: 978-1-62708-199-3
... inspection devices include bolometers, thermocouples, thermopiles, and meltable substances, whereas radiometers and pyrometers come under the noncontact category. contact thermographic inspection contact thermometric inspection noncontact thermographic inspection noncontact thermometric inspection...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006447
EISBN: 978-1-62708-190-0
..., other NDT techniques are enhancements of VI. Direct visual examination implies a direct straightline contact and view of the test surface. It involves the use of simple instruments, such as lighting equipment, handheld low-power magnifying loupes (up to 10×), and articulated mirrors...
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
... embedded in a compliant or flexible matrix. The wires heat the matrix, which is often an elastomer that may require several minutes to reach a stable temperature, so the source is heated to the desired excitation temperature before the inspection and then put in contact with the sample. The source blocks...
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
..., 2012 18 ASTM E164, Standard Practice for Contact Ultrasonic Testing of Weldments DoD Adopted 19 ASTM E213, Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing 20 ASTM E376, Standard Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current...
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
... vibrothermography process: vibration of the specimen by a transducer; conversion of vibrational energy into heat by a crack, delamination, and other contacting surfaces; conduction of the heat to an external surface; and infrared detection of the heat with a thermal camera. vibrothermography delaminations...
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
.... Cannot effectively use focused transducers Bubbler/dribbler systems Excellent signal quality. Low implementation cost Edge/cutout inspection limitations, due to the contacting nature of the bubbler scans, cannot cover the full part surface. Speed limitations. Bubblers have been used at up to 50 cm/s...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006050
EISBN: 978-1-62708-172-6
.... These conditions can lead to condensation of the interior conditioned air and also of the exterior humid air as it comes into contact with wall surfaces that are colder than the dewpoint ( Ref 5 ). Condensation of the interior conditioned air can occur at breaches that allow the outside air to cool the...