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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001199
EISBN: 978-1-62708-235-8
... of production. Castings examined were of an automobile name-plate holder with two flat sides of approximately 113 sq cm. All castings produced during a trial showed laking defects, the number and position varying from casting to casting. It was found that formation of metal waves and lakes depended primarily...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048421
EISBN: 978-1-62708-226-6
... Abstract Wear on a titanium screw head with a lip of material that that was transported by fretting at a plate-hole edge was studied. A flat fretting zone was visible on the screw surface over the material lip. A cellular wear structure containing wear debris was found. No morphological signs...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001298
EISBN: 978-1-62708-215-0
..., there was an absence of significant amounts of corrosion product and all of the pits were filled with corrosion-preventative primer. This indicated that the pitting occurred during spar manufacture, prior to the application of the primer The pitting resulted from multiple nickel plating and defective plating removal...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001297
EISBN: 978-1-62708-215-0
.... Approximately 0.66×. Testing Procedure and Results Surface Examination Visual Visual examination of the spar fracture surface revealed a flat fracture with beach mark features typical of fatigue. The fatigue fracture initiated at the inner surface of the spar cavity and propagated outward until...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001124
EISBN: 978-1-62708-214-3
... oil fields in Alaska. The transmission towers were 20 m (65 ft) high with a span length of 80 m (260 ft). The utilization of the current-carrying capacity of the transmission lines was 10 to 15%. The terrain was flat, featureless Alaskan tundra, with east-west winds up to 160 km/h (100 mi/h...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006402
EISBN: 978-1-62708-217-4
.... The expanding corrosion product had cracked and, in some places, had flaked away the anodized coating. The corrodent had penetrated the base aluminum in the form of subsurface intergranular attack to a depth of 0.035 mm (0.0014 in.). It was recommended that a vapor degreaser be used during cleaning prior...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001690
EISBN: 978-1-62708-226-6
... established as a consequence of the failure of medical implants in service. 6 The present U.S. legislation governing failure of medical devices is rigorous with respect to liability of the manufacturer. The manufacturers are considered legally responsible for the performance of the products and are often...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091678
EISBN: 978-1-62708-217-4
... to be corrosion products. Apparently, the origin of the failure was a tiny region of pitting corrosion on one flat surface of the lug (back surface, Fig. 1a ; arrow there shows location of pitting corrosion region). The opposite flat surface (front, Fig. 1a ) had a shear lip at the fracture edge. Fig. 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001569
EISBN: 978-1-62708-229-7
..., transgranular crack with oxide products. 50×, Nital Etch. The side wall failures contained transverse cracking on both the hot side of the tube and in the membrane area ( Figure 4 ). The fractures were oxidized, crescent-shaped, flat with ratchet marks and propagated from the outside inward ( Figure 5...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001733
EISBN: 978-1-62708-225-9
... It is characterized by a flat transverse break and a fracture which has a smooth shear surface toward the outer periphery of the wire and a microvoid formation at the center. Fig. 4 Laboratory ductile torsion failure reveals a flat, transverse break having smooth shear surface and microvoid formation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047192
EISBN: 978-1-62708-235-8
... flat fracture surfaces with no apparent yielding, but the two large segments did show evidence of bending (yielding) near the fractures. In addition, some segments contained fine radial cracks. Analysis (visual inspection, optical microscopy on polished-and-etched specimens, hardness testing...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006801
EISBN: 978-1-62708-329-4
... in quantifying the relationship with processing quality parameters in production. Factors known to influence the ability to expand a cut edge include: Sheet metal Sheet metal strength Edge-creation method (punching, laser, waterjet, etc.) Edge quality of the hole Hole diameter Punch/die...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001370
EISBN: 978-1-62708-215-0
... on the fracture surface. The fracture surface was helical in shape, smooth, and flat. Some portion of the fracture surface was found to have been rubbed. A cavity near the center was observed ( Fig. 3 ). The presence of corrosion deposits masked the macroscopic fracture details. After cleaning with 50...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... was used in the subject component Microchemical analysis: to find evidence of contamination, to evaluate the composition of microphases revealed on a metallographic specimen, or to evaluate corrosion products Extreme care must be used in interpretation of chemical analysis work performed as part...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001119
EISBN: 978-1-62708-214-3
... surfaces (one from each spring sample) revealed a fine intergranular structure in the flat region adjacent to the coil ID ( Fig. 3 and 4 ). No fatigue striations were seen at the magnifications used; higher magnifications were not effective because of the presence of iron-oxide corrosion products...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001715
EISBN: 978-1-62708-219-8
...-hand side of the photograph, and a twist on the right-hand side of the photograph. Fig. 5 A split in sample SRS #9 is shown in cross section. The split depth is approximately equal to the radius of the wire. The split is full of corrosion products. Corrosion is occurring at inclusions...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001274
EISBN: 978-1-62708-215-0
... Microwaves Paper products Laminated paper (Other, miscellaneous, or unspecified) failure Background A claim was made that a microwave food tray made of laminated paper was defective and collapsed, spilling hot food on the user. Circumstances Leading to Failure A laminated-paper tray...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001527
EISBN: 978-1-62708-224-2
... examination, the rope, strand, and wire diameters should all be measured. Examination should also address the presence or absence of lubricant, corrosion evidence, and gross mechanical damage. Failed wires can exhibit classic cup-and-cone ductile features, flat fatigue features, and various appearances...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006937
EISBN: 978-1-62708-395-9
... Transmission is one of the most obvious characteristics of a transparent plastic. It is measured using a spectrophotometer or a hazemeter in accordance with ASTM D 1003. This method uses a collimated light source, an integrating sphere, and a detector. Measurements are taken on a flat, dust-free test specimen...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
...) inspection, ultrasonic testing (UT), and evaluation of the external cathodic protection (CP) system were used in the failure analysis. The corrosion products were analyzed using energy-dispersive X-ray analysis (EDAX). The failure is attributed to the ingress of water and its impoundment under the tank...