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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
... Abstract Coiled tubing used in drilling operations failed at the halfway point of its estimated fatigue life. The failure was found to be transverse to the tubing axis. Visual examination revealed a flat fracture surface extending 13 mm with the rest of the fracture showing shear lips...
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
... Abstract During natural gas drilling in the EMS region in 1956, considerable numbers of longitudinal cracks and transverse fractures occurred in the connecting pieces of the bore rods. The connectors were screwed onto the rods by means of a fine thread and tightly joined with it by shrinkage...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001787
EISBN: 978-1-62708-241-9
... Fig. 1 The macromorphology of the drilling bit ( a ) the fracture surface; ( b ) the beach mark; ( c ) the crack of the tooth profile Fig. 2 SEM morphology of the spline: ( a ) A; ( b ) B; ( c ) C; ( d ) D; ( e ) area D-detail Fig. 3 SEM morphology of the area C...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001817
EISBN: 978-1-62708-241-9
... tension Abstract A wire hoisting rope on a drilling rig failed during a lift, after a few cycles of operation, causing extensive damage to support structures. The failure investigation that followed included mechanical property testing and chemical, metallurgical, and finite element analysis...
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 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 of a high...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001187
EISBN: 978-1-62708-226-6
... Abstract A stainless tool steel bone drill broke during an operation on a patient and was examined. It showed two fatigue fractures, one of which had started from a sharp-edged, coarsely milled slot (fracture A1), and the other from a point on the outer sheath surface which was not subjected...
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Published: 01 December 2019
Fig. 1 The macromorphology of the drilling bit ( a ) the fracture surface; ( b ) the beach mark; ( c ) the crack of the tooth profile More
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Published: 01 December 2019
Fig. 4 SEM morphology of the inner hole of the drilling bit More
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Published: 01 December 2019
Fig. 9 The microstructure in the transverse direction section of the drilling bit More
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Published: 01 December 1992
Fig. 1 Riser system for a floating drilling ridge. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001518
EISBN: 978-1-62708-228-0
... Abstract A fireball engulfed half of a drill rig while in the process of drilling a shot hole. Subsequent investigation revealed the cause of the fire was the failure of the oil return hose to the separator/receiver in the air compressor. The failed hose was a 50.8 mm 100R1 type hose...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046210
EISBN: 978-1-62708-235-8
... drilling, giving rise to surface defects. The fracture surface was characteristic of fatigue in that it was flat, relatively shiny, and exhibited beach marks. The crack surface was at a 45 deg angle to the axis of the shaft, indicating dominant tensile stresses. The material was the French designation...
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Published: 01 June 2019
Fig. 1 Bone drill with crack in the coupling. 3× More
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Published: 01 June 2019
Fig. 3 Crack in drill of Fig. 1 , after being broken open, showing several fatigue fractures which had started from machining grooves. 15× More
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Published: 01 June 2019
Fig. 9 Showing smeared material at bore of drilled hole. (×100). More
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Published: 01 June 2019
Fig. 10 “Crack-line” defect at bore of drilled hole. (×100). More
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Published: 01 June 2019
Fig. 13 A drilled hole with tool marking that was altered by the woody textured fracture plane More
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Published: 01 June 2019
Fig. 3 Fatigue failure of shaft originating drilled radial hole. More
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Published: 01 January 2002
Fig. 13 Fracture surface where a welded connection failed in a drill pipe connection. (a) General view of part of the fracture surface, which was covered with rust. (b) High-magnification view (approximately 2000×) of the rust nodules on the fracture surface. (c) View of the fracture surface More
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Published: 30 August 2021
Fig. 4 Undesirable altered surface caused by dull drill bits in holemaking. (a) Section perpendicular to the drilled hole axis in high-strength alloy steel. (b) Cross section through a hole made in stainless steel with a dull drill bit. Original magnification: ~20× More