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weld-quality monitoring

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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005638
EISBN: 978-1-62708-174-0
... Abstract This article reviews weld quality monitoring considerations for two automotive materials, steel and aluminum, with a focus on photosensor technology. It provides an overview of the process description, process parameters, and weld characteristics of laser welding. The article discusses...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005628
EISBN: 978-1-62708-174-0
..., quasi-static mechanical tests, dynamic mechanical tests, and metallographic examination, are reviewed. The article reviews weld-quality monitoring using various process signals and provides a discussion on the on-line and off-line nondestructive evaluation methods of spot weld quality. dynamic...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005578
EISBN: 978-1-62708-174-0
... Abstract This article lists the system parameters of the friction welding process and describes the four categories of monitoring and control of the manufacturing process. It discusses the monitoring methods of a rotary friction welded sample, for determining in-process quality of ferrous...
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
... stability and infers weld quality. In Ref 20 , a process signature using arc voltage and wire feed rate is established to monitor arc start instability and estimate the amount of spatter generated during the unstable arcing period during GMAW. The voltage-arc length characteristic has also been used...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005610
EISBN: 978-1-62708-174-0
... concepts described, several application areas, primarily involving machine characterization, weld parameter transfer, and weld quality control, can be pursued using diagnostic tools. It is shown in the following discussions that the use of beam diagnostics to monitor the beam characteristics provides...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006502
EISBN: 978-1-62708-207-5
..., DOC IV-181-75 , 11th Annual Meeting of the Welding Institute , July 6–12, 1975 ( Tel Aviv ), p 1 – 53 4. Moon D.W. and Metzbower E. , Weld. J. , 1983 , p 535 – 585 5. Paura R. , Laser Weld Quality Monitoring , Welding Fundamentals and Processes , Vol 6A , ASM...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001362
EISBN: 978-1-62708-173-3
... that is sometimes higher than that achieved by the GMAW process alone. This is particularly true for aluminum alloys, because the cleaning action of the plasma arc often results in reduced porosity. Quality control requires monitoring the welding parameters for both power sources, as well as monitoring the wire...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005583
EISBN: 978-1-62708-174-0
... or splitting along the weld seam. New quality-control methodologies and monitoring techniques are being applied to HFRW mills, resulting in significant reduction and elimination of weld quality problems related to premature weld seam failures due to a cold-weld condition. Full-scale testing is done...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006454
EISBN: 978-1-62708-190-0
... ” in this article, a common application of AE inspection in production quality control is monitoring welding and shaft-straightening processes. Efforts also have been directed at inspection of integrated circuits. For example, in the early 1970s, a satellite launch mission failed because of a loose particle inside...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005604
EISBN: 978-1-62708-174-0
... is valid for a specific aspect of welding simulation—the 3-D transient approach—in order to obtain high-quality results. It relates to the simulation of line welds produced by fusion welding processes such as arc or beam welding as well as by respective process combinations. It presupposes the occurrence...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005129
EISBN: 978-1-62708-186-3
... combinations. For a typical aluminum-killed drawing-quality (AKDQ) steel, for instance, the plane-strain forming limit can be between 15 and 20% for a typical laser-welded blank and a resistance mash-seam blank with hot planish. To avoid splitting in the weld, the strain component along the weld line should...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001473
EISBN: 978-1-62708-173-3
... the weld groove, could save on repair costs. Using dry powder techniques, MPT can be carried out while surfaces are still hot. Attempts have been made to incorporate NDE techniques with continuous monitoring of the weld process. Eddy-current testing, for example, has been used on small-bore induction...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004215
EISBN: 978-1-62708-184-9
..., and radiographic inspection. References References 1. ASME VIII, “Boiler and Pressure Vessel Code Division I and II,” 2004 2. British Standards Institute PD 5500, “Specification for Unfired Fusion Welded Pressure Vessels,” 2003 3. API 510, “Pressure Vessel Inspection Code: Maintenance...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005616
EISBN: 978-1-62708-174-0
... that is plastically deformed during the weld process. Another ultrasonic method, based on the electromagnetic acoustic transduction technology, has been used to monitor weld quality of flash butt welding of steel coil ( Ref 13 ). The on-line real-time monitoring system detects voids, laps, misalignment, and over...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006477
EISBN: 978-1-62708-190-0
... in the process zone that is plastically deformed during the weld process. Another ultrasonic method, based on the electromagnetic acoustic transduction technology, has been used to monitor weld quality of flash butt welding of steel coil ( Ref 13 ). The on-line real-time monitoring system detects voids, laps...
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
... case, the scanning process is at least an order of magnitude slower than laser or e-beam scanning, and the created melt pool is at least an order of magnitude larger. In many ways, the laser DED process is identical to laser cladding and laser welding. Monitoring systems for these processes provide...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006574
EISBN: 978-1-62708-290-7
... Table 1 Summary of process parameters used to fabricate welds for various materials Alloy Normal force Vibration amplitude, μm Travel speed Preheat N lbf cm/min in./min °C °F Al alloys ( Ref 24 ) 4000–6000 900–1350 30–34 455–510 180–200 ~80–95 ~180–200 Cu alloys...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005598
EISBN: 978-1-62708-174-0
.... The dual action of the GMAW and plasma arcs results in weld quality that is sometimes higher than that achieved by the GMAW process alone. This is particularly true for aluminum alloys, because the cleaning action of the plasma arc often results in reduced porosity. Quality control requires monitoring...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001478
EISBN: 978-1-62708-173-3
... practice, in the opinion of the American Welding Society, and are necessary for the control of brazed joint quality. At the present state of the art, all practices may not be applicable to all products or all brazing processes. However, when some of these practices are omitted on critical components...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003433
EISBN: 978-1-62708-195-5
... temperature and autoclave pressure Materials certifications Weld and weld heat treatment quality assurance through the use of penetrant, magnetic particle, ultrasonic, or visual inspections according to the relevant specification manuals or tool design requirements Surface control data from high...