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weldment failure

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... Abstract This article briefly reviews the general causes of weldment failures, which may arise from rejection after inspection or failure to pass mechanical testing as well as loss of function in service. It focuses on the general discontinuities observed in welds, and shows how some...
Image
Published: 01 January 1996
Fig. 10 Failure locations in weldments: ripple, toe, root, or weld termination. The distinction between a wraparound (continuous) termination and a simple termination (stop or start) is not made in this drawing. The termination and ripple are sites of fatigue crack initiation only when More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002367
EISBN: 978-1-62708-193-1
... devoted to crack nucleation ( N N ) and early crack growth ( N P1 ) are generally relatively short. Engineers for whom a single failure would be catastrophic and who are forced to use low-quality welding procedures must by necessity adopt a very pessimistic view regarding the fatigue life of weldments...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002408
EISBN: 978-1-62708-193-1
... strength of aluminum alloy weldments. The progressive failure mechanisms that operate in welded joints are no different from those in the metals which they join. However, welds are usually located at a structural (global) stress concentration, typically introduce a severe notch (i.e., local stress...
Image
Published: 01 January 1996
Fig. 8 Typical data for AISC category C weld details. Data taken from the University of Illinois at Urbana-Champaign weldment fatigue databank. Data for details 7, 10–14, 19, and 22–25 are in Table 2 . Tests that were discontinued before failure are termed “run outs.” More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003621
EISBN: 978-1-62708-182-5
... Abstract Corrosion of carbon steel weldments can be due to metallurgical effects, such as preferential corrosion of the heat-affected zone (HAZ) or weld metal, or it can be associated with geometrical aspects, such as stress concentration at the weld toe, or creation of crevices due to joint...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003623
EISBN: 978-1-62708-182-5
... Abstract Corrosion resistance can usually be maintained in the welded condition by balancing alloy compositions, shielding molten and hot metal surfaces, and choosing the proper welding parameters. This article describes some of the metallurgical factors that affect corrosion of weldments...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... that the weld discontinuities evaluated through NDE in weld production are not considered a weld failure, but they may contribute to developing into one while in service. Methods of Nondestructive Inspection of Welds The nondestructive inspection of weldments has two functions: Quality control...
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
... simultaneous tension and shear loading. Source: Ref 16 A less commonly conducted test on spot welds is the torsion test. Two types of torsional loading can be applied to a spot weldment. One is twisting a standard tension test specimen in which the angle of twist at failure is measured...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001034
EISBN: 978-1-62708-161-0
...-treatable low-alloy (HTLA) steels Precoated steels This article addresses only the basic principles that affect the weldability of carbon and low-alloy steels. More detailed information concerning the other aspects of welding, such as joint design, defects, and failure in weldments...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006814
EISBN: 978-1-62708-329-4
... often be built and tested as prototypes before designs are finalized. While not minimizing the importance of the mechanical engineer’s weldments, the failure of a single weldment will rarely have the same consequences as the failure of a structure, such as a bridge. Because structural failures often...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001475
EISBN: 978-1-62708-173-3
... a technique for determining the distribution of residual stresses in a weldment by observing the pattern of hydrogen-induced cracks ( Ref 1 ). Buckling Under Compressive Loading Failures caused by instability or buckling sometimes occur in metal structures composed of slender bars or thin plates, when...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005607
EISBN: 978-1-62708-174-0
... by using a dual-head system in which the ultrasonic energy is introduced from both sides of the weldment. Production applications include wire to wire and wire to terminals for wire harnesses for appliance, automotive, and the cable industry; buss bars; circuit breakers; contacts; ignition modules...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006108
EISBN: 978-1-62708-175-7
..., the weld integrity will be jeopardized and the weldment prone to premature failure. Weldments involving dissimilar metals may also be subject to electrochemical corrosion. The differences in electrochemical potential indicate the susceptibility of the weldment to corrosion. If the alloys are at opposite...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003622
EISBN: 978-1-62708-182-5
.... The effects of gas-tungsten arc weld shielding gas composition and heat-tint oxides on corrosion resistance are also discussed. The article explains microbiological corrosion of butt welds in water tanks with the examples. In addition, it provides information on corrosion of ferritic stainless steel weldments...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005617
EISBN: 978-1-62708-174-0
... cracking of weldments in various steels has been studied, and attempts have been made to develop a technique for determining the distribution of residual stresses in a weldment by observing the pattern of hydrogen-induced cracks ( Ref 6 ). Buckling Under Compressive Loading Failures caused...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005557
EISBN: 978-1-62708-174-0
... a qualification test weldment as well as documenting the results on a procedure qualification record (PQR). The most common method of procedure qualification involves welding a test weldment that is specifically designed for this purpose and testing it as described by the applicable code or standard. Some codes...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001471
EISBN: 978-1-62708-173-3
... Abstract Weldments exhibit special microstructural features that need to be recognized and understood in order to predict acceptable corrosion service life of welded structures. This article describes some of the general characteristics associated with the corrosion of weldments. It emphasizes...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001474
EISBN: 978-1-62708-173-3
... weldments represent the type of weld and weld joint that are to be used in production. Groove welds in butt joints in plate and pipe are shown in Fig. 1 and 2 , respectively. Two examples of fillet welds in T-joints are shown in Fig. 3 . Fillet welds can also be deposited on lap, corner, or edge joints...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.9781627081757
EISBN: 978-1-62708-175-7