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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0090439
EISBN: 978-1-62708-220-4
... Abstract A section of clear polymeric tubing failed while in service. The failed sample had been used in a chemical transport application. The tubing had also been exposed to periods of elevated temperature as part of the operation. The tubing was specified to be a polyvinyl chloride (PVC...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0090451
EISBN: 978-1-62708-218-1
... Abstract Cracking occurred within the plastic jacket (injection molded from an impact-modified, 15% glass-fiber-reinforced PET resin.) of several assemblies used in a transportation application during an engineering testing regimen which involved cyclic thermal shock (exposing the parts...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001040
EISBN: 978-1-62708-214-3
... that a salvage welding repair had resulted in the formation of martensite that developed cracks, leading to fatigue failure of the axle. It was recommended that no weld buildup or repair be permitted on the axles. Repair welding Transportation applications 4140 Fatigue fracture Joining-related failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048616
EISBN: 978-1-62708-217-4
... Abstract A T-bolt was part of the coupling for a bleed air duct of a jet engine on a transport plane. Specifications required that the 4.8 mm diam component be made of AISI type 431 stainless steel and heat treated to 44 HRC. The operating temperature of the duct is 425 to 540 deg C (800...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001779
EISBN: 978-1-62708-241-9
... Abstract Material samples collected from failed booster pumps were analyzed to determine the cause of failure and assess the adequacy of the materials used in the design. The pumps had been in service at a power plant, transporting feedwater from a deaerator to a main turbine boiler. Samples...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001822
EISBN: 978-1-62708-241-9
... nondestructive testing, metallography, and scanning electron microscopy. Based on the results, the failure was attributed to transit fatigue, caused during highway transportation. Cracks along the toes of the weld from both the outside and inside surfaces, the transgranular nature of cracking, and the presence...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006833
EISBN: 978-1-62708-329-4
.... Department of Transportation Federal Highway Administration (FHWA) ( Ref 2 ). As of 2017, there were more than 614,000 bridges in the National Bridge Inventory, of which approximately 40% were 50 years old or older ( Ref 3 ). This includes overwater bridges and overpasses of all construction...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001350
EISBN: 978-1-62708-215-0
... exhibited cracks on its shell at two of four shell/nozzle fillet-welded joint regions. Applications The tank is used for storage of liquid sodium, the coolant in a fast breeder test reactor. Circumstances Leading to Failure After fabrication, the tank was transported to the erection site...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001306
EISBN: 978-1-62708-215-0
... fracture Background Application This case study concerns the failure of speciality alloy fasteners used in the mounting of dual wheel assemblies in medium and heavy trucks. Circumstances Leading up to Failure The dual rear wheel assembly on the left side of a single rear axle heavy truck...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001446
EISBN: 978-1-62708-234-1
... Abstract A 2 ft. diam 20 ft. long cylinder with a wall thickness of 1 in. used for the transportation of a compressed gas failed by cracking. The cylinder was forged in a low ally steel. The working pressure was 3000 psi and it had been in service for about seven years. A longitudinal crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001608
EISBN: 978-1-62708-236-5
... Steel Much of the world's production of steel is used in the hot rolled or as-rolled condition. Hot rolled steel is one of the basic raw materials of industry and is transported great distances throughout the world. Usually there is no surface treatment (such as blasting, painting, or galvanizing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001452
EISBN: 978-1-62708-232-7
... Abstract A bracket which formed part of the carrier of a chain conveyor system used to transport components through a continuous oven fractured. A brittle crack originated on the inside of the right-angled bend, the surface having oxidized subsequently. The remaining portion of the fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001504
EISBN: 978-1-62708-217-4
... of the trends in failure mechanisms and causes. Case Histories Main Landing Gear Truck Beam of a Large Transport Aircraft A main landing gear truck beam from a large transport aircraft fractured on the ground just after refuelling as a result of a circumferential crack located about 0.14 m (5.5...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001299
EISBN: 978-1-62708-215-0
... for cracks during periodic maintenance overhauls. Aerospace engines Airplanes Nonmetallic inclusions 4340 UNS G43400 Fatigue fracture Background A steel piston engine crankshaft in a transport aircraft failed catastrophically during flight. Applications The massive, complex-shaped...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... a diverse project team when performing a root-cause analysis. There are many different types and scopes of aircraft investigations. Governmental investigative agencies may perform failure investigations. For instance, the National Transportation Safety Board (NTSB) in the United States engages...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001296
EISBN: 978-1-62708-215-0
... in the fuel supply system of a transport aircraft broke into two pieces during flight. Applications The valve guide was one of a batch of such components imported for tail plane pitch control. Valve failure introduces a great risk of fire, which may endanger the safety of the aircraft by the escape...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... industry corrosion resistance gas turbine components heat exchangers material selection power generation industry process control refractories structural ceramics REFRACTORY MATERIALS are used in various industrial applications to line the interior of a multitude of vessels (mainly made...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001389
EISBN: 978-1-62708-215-0
... and its rating, application, and cost determine the type of plastic used in the molded cases and covers. The working parts are mounted or encased in molded plastic for structural reasons and for electric insulation of current-carrying components. Fig. 1 Typical microstructure of a 50Ag–50Mo contact...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001369
EISBN: 978-1-62708-215-0
... resulted from the welding stresses. Conclusion and Recommendations The steel used, which was not as specified, was not particularly well suited for carburizing and was not strong enough for this application. Excessive case depth resulted in a brittle surface, causing the keyway to chip. The chipped...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001325
EISBN: 978-1-62708-215-0
... quality. Hydrogen sulfide Weld metal Welded joints UNS K03005 UNS K03504 UNS K03006 ASTM A53 grade B ASTM A105 ASTM A234 grade WPB Uniform corrosion High-temperature corrosion and oxidation Background Application This cross-tee was located in piping which conveyed concentrated H...