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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001424
EISBN: 978-1-62708-233-4
...Abstract Abstract Two examples concerning fabricated mild steel rotor spiders which failed due to lack of torsional rigidity, probably supplemented by the presence of high internal stress, are described. The machine concerned in the first case was a 3,000 hp three-phase slip-ring motor...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001353
EISBN: 978-1-62708-215-0
...Abstract Abstract A reversible four-way carbon steel flap valve in a thermal power station failed after 7 years of service. The flap had been fabricated by welding two carbon steel plates to both sides of a carbon steel forging. The valve was used for reversing the flow direction of seawater...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091362
EISBN: 978-1-62708-220-4
.... The increase in the weld nitrogen level was a direct result of inadequate argon gas shielding of the molten weld puddle. Two areas of inadequate shielding were identified: improper gas flow rate for a 19 mm (0.75 in.) diam gas lens nozzle, and contamination of the manifold gas system. Recommendations included...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001491
EISBN: 978-1-62708-217-4
... passed proof tests. Warp direction mechanical properties could not be used to predict pass or fail in a proof test. The convergent sections of two silica phenolic nozzle liners failed during proof pressure tests. The proof testing was conducted in Marquardt Jet Laboratory Test Cell No. 3 in Van Nuys...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... considerations, and quality assurance. The emphasis is on the design and metallurgical aspects for the two main types of metal AM processes: powder-bed fusion (PBF) and directed-energy deposition (DED). The article also describes the processes involved in binder jet sintering, provides information on the design...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001141
EISBN: 978-1-62708-227-3
... and more graphically in two dimensions in Fig. 13 reduce the through-thickness ductility enough to cause lamellar tearing when the steel is strained in this direction. The fern-like pattern of the inclusions shows that simple crosssections like that in Fig. 2 may not adequately represent the extent...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001528
EISBN: 978-1-62708-219-8
... safety until replacement. This tank, another like it, and two heaters are part of a 60,000 liter (16,000 gallon) direct-contact hot water system that has been in service for five years. The approximately 4 m (13.5 ft) high, 2.5 m (8 ft) diameter tanks are fabricated from 3.18 mm (0.125 inch) thick...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001053
EISBN: 978-1-62708-214-3
... psi), the vessel fractured, ejecting two large sections of the wall. The temperature of the water being used for the hydrotest was 15 °C (60 °F), and the ambient temperature was about 10 °C (50 °F). The pressure vessel was fabricated from ASTM A515 grade 70 steel plate, in accordance with the ASME...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... and in many φ directions. The examples shown in Fig. 3 demonstrate that an elliptical fit gives good results ( Fig. 3a ), whereas a linear fit using either the ψ > 0 or the ψ < 0 branch leads to incorrect results ( Fig. 3b ). In this case, the results from the two opening branches of the curve...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... to melt the bronze alloy and transform the approximately eutectoidal carbon steel of the drive axle to austenite. Fig. 3 Broken axles from two different Seaboard Coast Line locomotives that failed due to overheated friction-bearing failures. The pictures show both axles that were used to learn...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... Two tensile specimens were fabricated from each leaf. Tensile coupons from leafs 1 through 5 met the mechanical requirements of the engineering drawing ( Table 2 ). One coupon from each of the softer leafs (6a and 7a) failed to meet the drawing requirements. Tensile properties Table 2 Tensile...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001517
EISBN: 978-1-62708-217-4
.... The cross-sections indicated that the component had been manufactured utilizing 20 plys of a plain weave fabric. A smaller weave fabric, however, was utilized for one exterior and three interior plys ( Figure 2 ) . Overall, the two cross sections revealed more similarities than differences. Both cross...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001583
EISBN: 978-1-62708-217-4
... program for these components. Three different manufacturers each fabricated two of the components. One of the manufacturers was the OEM, while the other two were being considered for second source status. The second source components were required to meet or exceed the cycles to failure achieved...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001150
EISBN: 978-1-62708-235-8
... of the vessel. The beets are carried from the low to high end of the diffuser by two intermeshed screw-type conveyor assemblies that have opposite rotations. Along their routes of travel, any solid plugs of beets are separated by stationary breaking bars welded to the vessel shell. As the beets are conveyed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... fibers Mixed reinforcements (either with fiber and filler, or with two types of fillers known as hybrid composites ) and fabrics Each section discusses various aspects such as friction and wear performance of the composites, correlation of performance with various materials properties...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001520
EISBN: 978-1-62708-235-8
...Abstract Abstract Two types of chromium-plated hydraulic cylinders failed by cracking on their outer surfaces. In one case, the parts had a history of cracking in the nominally unstressed, as-fabricated condition. In another, cracks were detected after the cylinders were subjected to a pressure...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001314
EISBN: 978-1-62708-215-0
... in the material itself If sufficient fluid is present to maintain the annular flow, pooling of liquid in the bottom of the coils near the exit of the tank is expected to occur. This pooling results in one and possibly two conditions in these coils which leads to the development of thermal stresses: Pooling...
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
... joints in service, it was recommended to replace all the tubes in the furnaces within two years. Cracking in the circumferential orientation at the inside diameter weld root resulted from creep in the longitudinal direction and was accelerated by a high-temperature excursion that exceeded the design...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001661
EISBN: 978-1-62708-229-7
... extraneous matter that would interfere with the examination. The normal examination shall consist of orienting the prod in two directions to produce approximately perpendicular magnetic lines of force over each inspection area. (See Figure 4 ). When applicable, expected flaw location and/or orientation...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... repairs had been performed and not reported. Fig. 8 High-pressure steam separator vessels received from overseas after fabrication (two of four) Fig. 9 Typical polished and etched location around manway weld showing the extended boundary of weld that was originally hidden by grinding...