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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001818
EISBN: 978-1-62708-241-9
... Abstract A sleeve-shaped fire shield that operates inside one of two burner trains in an oil and gas processing unit ruptured after 15 y of service. A detailed analysis was conducted to determine how and why the sleeve failed. The investigation included visual inspection, chemical and gas...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001042
EISBN: 978-1-62708-214-3
... Abstract Failure occurred in a type 304 stainless steel leaf spring attached to the undercarriage assembly of an airport shuttle train. Failure analysis showed that the fracture was caused by low-cycle, reversed bending fatigue. The stresses leading to failure were imposed by poor alignment. It...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
... Abstract An ASTM A 504 carbon steel railway car wheel that was used on a train in a metropolitan railway system failed during service, causing derailment. The wheel was completely fractured from rim to hub. Macrofractography of the fracture surface showed road grime, indicating that the crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0091092
EISBN: 978-1-62708-224-2
... Abstract A 60.3 mm (2.375 in.) diam drive shaft in the drive train of an overhead crane failed. The part submitted for examination was a principal drive shaft that fractured near a 90 deg fillet where the shaft had been machined down to 34.9 mm (1.375 in.) to serve as a wheel hub. A 9.5 mm...
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
...-train components are often subject to severe fatigue loading and are perhaps even more prone to fatigue failure. In all instances, the presence of fatigue cracks at least contributed to the failure. In most instances, fatigue was the sole cause. Further, in each case, with regular inspection, fatigue...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001023
EISBN: 978-1-62708-214-3
.... Consequently, wear damage to the splines of both components was accelerated, eventually leading to complete failure of the splines. The failed splined shaft and gear assembly forms an integral part of the ATAR engine accessory drive gear train. The gear train provides power from the main engine to the...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006754
EISBN: 978-1-62708-295-2
..., assemblies, or structures, and its approach is consistent with the knowledge base of a person trained in materials engineering. The contribution of the materials engineer to the advancement of the scientific foundation of failure analysis has been great in the last few decades. This is evidenced by the fact...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001382
EISBN: 978-1-62708-215-0
... fracture. It was recommended that proper lubrication procedures be maintained to allow free rotation of the bolts while in service. Axles Couplings Lubrication Railroads 1045 UNS G10450 Fatigue fracture A trunnion bolt that was part of a coupling system in a train failed in...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001081
EISBN: 978-1-62708-214-3
... investigation were regularly updated by the engine manufacturer on the basis of field experience. After almost 14 years of engine operation, severe bolt hole cracking of disks and spacers in the eight-stage compressor train assembly of all engines, including the baseline, was observed during scheduled overhaul...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... assessments. The optimal time to obtain chemical information on corrosion products, surface contamination, greases, lubricants, and fluid media is as soon as the failure is discovered. Having a well-trained analyst, technician, or engineer is critical in maintaining the integrity of the sample and not...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001077
EISBN: 978-1-62708-214-3
... through a train of spiral bevel and planetary gears. The 62-tooth spiral bevel gear ( Fig. 1 ) operates in a transmission oil environment. Fig. 1 Carburized AISI 19310 spiral bevel gear with two fractured teeth. While the helicopter was in flight, a loud grindingnoise was heard coming from the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... directly in lbf at each frequency present. Equally spaced photoreflective tapes were placed at 20 locations around the output hub of the gearcase for the second measurement. A photocell device was then mounted to pick up the pulse train of the reflective tapes. The output from the photocell provided the...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
... used more often to describe the investigation and subsequent analysis of any unexpected event that causes loss or injury. Accident reconstruction is rarely a simple endeavor and requires personnel with proper training and experience in performing a comprehensive investigation and accurate...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001759
EISBN: 978-1-62708-241-9
... given application. A propeller shaft, or cardan shaft, is a mechanical component for transmitting torque and rotation, normally utilized to connect other components of a drive train, which cannot be connected directly because of distance or the need to allow for relative movement between them. The...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001786
EISBN: 978-1-62708-241-9
... The Short Bed Heavy Duty [ 1 ] conventional Lathe of Beco make housed at CWD, IGCAR was procured in the year 1991. It is used for machining large diameter components. It has a power house with a motor of capacity 40 hp. Main parts are head stock (head stock gear train, main spindle, feed gear box, and...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
... personnel capable of performing the task. Sometimes, these personnel have just enough training, and sometimes they have too little training. Unfortunately, this business attitude can foster a situation in which the personnel performing the task may cause a failure by selecting the wrong test, by performing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... of the weld root and lengthen the axial weld leg, and 2) requiring specific socket-weld training to improve welder skills. Fatigue failures of small-bore pipe are not safety significant. The reasons for this are as follows: Experience shows operators discover leaks quickly, and corrective...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001004
EISBN: 978-1-62708-229-7
... tensile testing machine. The load train contains the punch/die set which holds the small disc test sample, environmental or temperature chamber and loads which record the punching force. The Instron cross head speed was kept constant at 0.02mm/sec. The specimens were punched until a 10% or greater...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001609
EISBN: 978-1-62708-229-7
... solution can be used to confirm that mill annealing and PWHTs have been effectively performed. 8 The natural-gas-fired combined cycle plant in this study has two separate power trains—units A and B—each having a CT and HRSG. The HRSGs were manufactured in modules with up to 10 harp assemblies each. The...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... conducted and appropriate preventive actions were not taken. This was primarily due to too much reliance on MSDSs for information. MSDSs can provide adequate chemical hazards information, but not the process hazards information. Standard operating procedures and training were less than adequate. The...