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laser ultrasonic testing

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... ultrasound is at the basis of material testing, similarly to conventional ultrasonics, laser-ultrasonics entails the same applications, which include thickness measurement, flaw detection, and materials characterization. Thickness measurement is based on the measurement of the time interval between...
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
...Abstract Abstract This article introduces the principal methodologies and some technologies that are being applied for nondestructive evaluation of composite materials. These include ultrasonic testing (UT), air-coupled UT, laser UT, ultrasonic spectroscopy, leaky lamb wave method, acousto...
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
... and flexibility are the primary benefits for testing composite materials with laser systems, while the noncontact remote-sensing feature is most important for process-control applications in the steel industry. For many composite materials and configurations, laser UT can be faster than other ultrasonic...
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: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006559
EISBN: 978-1-62708-290-7
... test. Cong et al. successfully obtained bulk Al 2 O 3 and Al 2 O 3 /10wt% ZrO 2 composite ceramics ( Ref 19 , 20 ). They studied the effects of DED process parameters on the morphology and microhardness of alumina and further prepared Al 2 O 3 /10wt% ZrO 2 composite ceramics by ultrasonic-assisted...
Image
Published: 01 August 2018
Fig. 30 Application of laser ultrasonics to additive manufacturing. (a) Inconel test specimen with the scan zone 25 mm × 10 mm (1.0 in. × 0.4 in.), 0.1 mm (0.004 in.) steps, indicated in red. (b) C-scan. (c, d) B-scans extending from the top of deposition to 7 mm (0.28 in.) below and across More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003437
EISBN: 978-1-62708-195-5
... methods and data analysis is available in Mechanical Testing and Evaluation, Volume 8 of ASM Handbook. Nondestructive Evaluation Nondestructive assessment methods that have been successfully applied to particulate-reinforced aluminum composites are listed in Table 3 . Ultrasonic techniques...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006471
EISBN: 978-1-62708-190-0
... ultrasonic waves; some examples are shown in Fig. 1 ( Ref 1 , 2 ). Conventional technologies most commonly have used single-element piezoelectric-based transducers that couple energy into a part using a couplant. This couplant can be a grease or gel in contact testing, or a large volume of fluid, commonly...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006461
EISBN: 978-1-62708-190-0
...Abstract Abstract This article provides an overview of the characteristics of Rayleigh waves plus methods for generation and detection of waves, including using piezoelectric transducers or noncontact techniques such as lasers, electromagnetic acoustic transducers, or air-coupled ultrasonics...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
...Abstract Abstract This article reviews nondestructive testing (NDT) and inspection techniques, namely liquid penetrant, magnetic particle, ultrasonics, X-ray, eddy current, visual and radiography that are commonly used to detect and evaluate flaws or leaks in an engineering system. This article...
Book Chapter

Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006474
EISBN: 978-1-62708-190-0
..., on a liquid surface. A pulsed laser captures the diffraction image of the liquid surface, giving an image of the part with a video rate frame of 50 to 60 per second. In Dassault’s system, specimens to be inspected were placed in front of a 10 cm (4 in.) diameter ultrasonic transducer, which can give discrete...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003240
EISBN: 978-1-62708-199-3
... a suitable mechanism exists for stressing or otherwise exciting the object. Pulsed-laser techniques allow the inspection of test objects in unstable or hostile environments. It has an inherent sensitivity to the displacement or deformation of at least one-half an optical wavelength, or about 125 nm...
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: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006557
EISBN: 978-1-62708-290-7
..., such as spatially resolved microscopy ( Ref 67 ), laser ultrasonics ( Ref 9 , 80 ), and acoustic emission testing ( Ref 70 ), have shown great promise for investigating AM materials on an ex situ level. Ultrasonic characterization and inspection offers additional bulk material property and subsurface information...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006466
EISBN: 978-1-62708-190-0
... to generate the ultrasound, and a focused laser beam as a point source detector of the ultrasonic signal. Acoustic images are produced at a rate of 30 images per second. The simplest geometries for SLAM imaging are flat plates or disks. However, with proper fixturing, complex shapes and large samples...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001469
EISBN: 978-1-62708-173-3
... joining method. The techniques are hot-tool, hot-gas, extrusion, focused infrared, laser, friction, vibration, spin, ultrasonic, and electromagnetic welding techniques (resistance, induction, dielectric, and microwave welding). The article concludes with a discussion on welding evaluation methods...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005605
EISBN: 978-1-62708-174-0
... microhardness testing nanohardness testing peel testing process consumables push-pin testing quality control ultrasonic additive manufacturing ultrasonic welding welding parameters THE ULTRASONIC ADDITIVE MANU-FACTURING (UAM) PROCESS consists of building up solid metal objects by ultrasonically...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
...-particle inspection radiography surface discontinuities surface inspection ultrasonic inspection NONDESTRUCTIVE TESTING (NDT), also known as nondestructive evaluation (NDE), includes various techniques to characterize materials without damage. The methods of NDE involve dimensional metrology...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... S. , Dickens P. , Tuck C. , and Dutton B. , Evaluation of Laser Ultrasonic Testing for Inspection of Metal Additive Manufacturing , Proc. SPIE 9353, Laser 3D Manuf. II , Vol 9353 , 2016 , p 935316 8. Seifi M. , Salem A. , Beuth J. , Harrysson O...
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
... no indication of any substantial surface damage to hard metals (Ti-6-4 and Inconel 718) from repeated testing with an ultrasonic welder. The study indicates that repeated welder contact could result in some cold working of the metal surface and fretting. Welder testing did not cause any statistically...