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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001611
EISBN: 978-1-62708-219-8
...Abstract Abstract Cold cracking of structural steel weldments is a well-documented failure mechanism, and extensive work has been done to recognize welding and materials selection parameters associated with it. These efforts, however, have not fully eliminated the occurrence of such failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0046155
EISBN: 978-1-62708-233-4
... to the member ( Fig. 1 ). At failure, the part was receiving the second set of loads up to 103.6% of design load. The post was made of D-6ac steel and was heat treated to a tensile strength of 1517 to 1655 MPa (220 to 240 ksi). Fig. 1 Structural member (post) of D-6ac steel that failed by fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047113
EISBN: 978-1-62708-219-8
...Abstract Abstract A portion of a 19 mm (0.75 in.) diam structural steel bolt was found on the floor of a manufacturing shop. This shop contained an overhead crane system that ran on rails supported by girders and columns. Inspection of the crane system revealed that the bolt had come from...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001094
EISBN: 978-1-62708-214-3
...Abstract Abstract Cadmium-coated type 410 martensitic stainless steel 1 4 -14 self-drilling tapping screws fractured during retorquing tests within a few weeks after installation. The screws were used to assemble structural steel frames for granite panels that formed the outer skin...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001208
EISBN: 978-1-62708-229-7
...Abstract Abstract A spindle made of hardenable 13% chromium steel X40 Cr13 (Material No. 1.4034) that was fastened to a superheated steam push rod made of high temperature structural steel 13Cr-Mo44 (Material No. 1.7335) by means of a convex fillet weld, fractured at the first operation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001588
EISBN: 978-1-62708-221-1
...Abstract Abstract On 23 Dec 1997, a portion of the main ore conveyor at a large mine collapsed onto a highway and shut down mine operations. The conveyor structure that collapsed was supported by a steel truss spanning 185 ft. Truss failure occurred just as the conveyor transport rate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001644
EISBN: 978-1-62708-219-8
... that the fatigue crack predated the single overload crack. Blades Fans Shafts (power) Structural steel Fatigue fracture In this situation, a large fan assembly deformed and broke at multiple locations. The client wanted to know whether the bearing pillow block ( Fig. 1 ) fracture had caused...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001151
EISBN: 978-1-62708-219-8
... girder and truss materials, and mechanical testing of the truss material. It was concluded that substandard structural components in combination with faulty construction was responsible for this service failure. Angle iron Fabrication defects Roofing Trusses Structural steel (Other...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001135
EISBN: 978-1-62708-219-8
... rates in the banded region. By noting these differences, bridge engineers can re-evaluate existing designs and modify current bridge inspection procedures. The steel used in the construction of this bridge was specified as ASTM A441, a steel commonly used in structural applications. Normally...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001777
EISBN: 978-1-62708-241-9
... flange fracture weld defects structural steel oxidation fractography anisotropy ASTM A36 (structural steel) UNS K02599 Introduction Structural Analysis Mechanical and Microstructural Characterization Fractography Conclusions Recommendations References References 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001210
EISBN: 978-1-62708-227-3
... was not done at all or the preheating was not high enough or sufficiently uniform. This damage was therefore caused by a welding defect. Cracking (fracturing) Pipe Preheating Weld defects Welded joints Structural steel Joining-related failures In a shipyard one of the two posts of a loading...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001524
EISBN: 978-1-62708-221-1
... stresses on the chord during the lifting of enormous loads initiated a fatigue crack in the weld region adjacent to the bolt hole. Bolted joints Cranes Mining Repair welding Stress concentration Structural steel Fatigue fracture Failure analysis is like being a detective trying to solve...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001551
EISBN: 978-1-62708-233-4
... were ground. It was found that the natural frequency of the wheel truing device was the culprit. A tuned damped absorber was designed and built to modify the resonance. This eliminated the problem. Grinding machines Printing press rolls Shafts (power) Vibration analysis Structural steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001549
EISBN: 978-1-62708-224-2
..., fatigue cracks probably would have been detected well before final failure. Bolts Cranes Drive shafts I-beams Steel plate Structural steel Fatigue fracture Introduction 1. Crane Collapse Due to Bolt Fatigue 2. Fatigue Failure of Crane Support Column 3. Fatigue Failure of a Crane...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047512
EISBN: 978-1-62708-219-8
... of the incomplete welds. Continuation of the cracks was attributed to the brittle condition of the steel when cooled by the night air. A steel with a much lower ductile-to-brittle transition temperature is essential for this type of structure. Other necessary steps include better control of the girth-welding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001204
EISBN: 978-1-62708-219-8
...-1.50Mn Joining-related failures Two bolts from the stressed structure of a church building that had broken during stressing were examined to establish the cause of fracture, They had been ordered made of sigma steel 60–90, which is a heat treated low alloy structural steel with a yield point...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001263
EISBN: 978-1-62708-224-2
... steel quality St 37-2 N, a steel with about 0.5% C had been used. The microstructure with the coarse ferrite network indicated that the forged eye bolt had been normalized either at too high a temperature or not at all. In any case the anneal at 900 deg C produced a considerably more finely grained...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089459
EISBN: 978-1-62708-235-8
... in critical area was recommended. Banded structure Forgings Rods Segregation Medium-carbon steel Metalworking-related failures Fatigue fracture The broken connecting end of a forged medium-carbon steel rod used in an application in which it was subjected to severe low-frequency loading...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001179
EISBN: 978-1-62708-228-0
... with it by shrinkage at 530 deg C. The connectors were made of SAE 4140 Cr-Mo steel. The material for the rod pipes was Fe-0.4C-1Mn steel. Structural stresses played a role in the cracking. Iron sulfide formed on the fracture planes and flake-like stress cracks occurred in the steel. The hydrogen sulfide content...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0051866
EISBN: 978-1-62708-228-0
... fluids or modifying the fluids in the tubing or purging by flowing dry nitrogen to dry it out. Coiled steel Drilling Pitting (corrosion) Tubes Structural steel tubing Corrosion fatigue Coiled tubing is used in drilling operations because it eliminates the need for a drilling rig...