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Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... Abstract In addition to failures in shafts, this article discusses failures in connecting rods, which translate rotary motion to linear motion (and conversely), and in piston rods, which translate the action of fluid power to linear motion. It begins by discussing the origins of fracture. Next...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047865
EISBN: 978-1-62708-225-9
... Abstract Splined rotor shafts (constructed from 1151 steel) used on small electric motors were found to miss one spline each from several shafts before the motors were put into service. Apparent peeling of splines on the induction-hardened end of each rotor shaft was revealed by visual...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001254
EISBN: 978-1-62708-225-9
... Abstract The specified elongation of 10% could not be achieved in several hollow pinion gear shafts made of cast Cr-Mo steel GS 35 Cr-Mo 5 3 that were heat treated to a strength of 90 kp/sq mm. The steel was melted in a basic 3 ton arc furnace and deoxidized in the furnace and in the pan...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001430
EISBN: 978-1-62708-236-5
... Abstract An intermediate shaft (3 in. diam), part of a camshaft drive on a large diesel engine, broke after two weeks of service. Failure occurred at the end of the taper portion adjacent to the screwed thread. The irregular saw-tooth form of fracture was characteristic of failure from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047823
EISBN: 978-1-62708-236-5
... Abstract High-horsepower electric motors were utilized to drive large compressors (made of 4340 steel shafts and gear-type couplings) required in a manufacturing process. The load was transmitted by two keys 180 deg apart. Six of the eight compressor shafts were found cracked in a keyway...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001620
EISBN: 978-1-62708-229-7
... Abstract Two vertical coal-pulverizer shafts at a coal-fired generation station failed after four to five years in service. One shaft was completely broken, and the other was unbroken but cracked at both ends. shaft material was AISI type 4340 Ni-Cr- Mo alloy steel, with a uniform hardness...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... Abstract This article discusses failures in shafts such as connecting rods, which translate rotary motion to linear motion, and in piston rods, which translate the action of fluid power to linear motion. It describes the process of examining a failed shaft to guide the direction of failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0047447
EISBN: 978-1-62708-230-3
... Abstract Small paddles used to mix pulp had experienced a high incidence of breakage through the shafts. In some of the shanks, shrinkage was found relatively close to the surface where threads had been cut all the length of the shaft. Chemistries were within normal CF-8M ranges. Metallography...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001764
EISBN: 978-1-62708-241-9
... Abstract High failure rates in the drive shafts of 40 newly acquired articulated buses was investigated. The drive shafts were fabricated from a low-carbon (0.45%) steel similar to AISI 5046. Investigators examined all 40 buses, discovering six different drive shaft designs across the fleet...
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Published: 01 June 2019
Fig. 1 Two failed coal-pulverizer shafts. The broken shaft is on the right; the cracked shaft is on the left. The arrow indicates the position of the bowl end crack in the cracked shaft. More
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Published: 01 January 2002
Fig. 27 Fracture surfaces of failed shafts. (a) and (b) Failure by fatigue. (c) and (d) Failure by torsional shear. See text for discussion. More
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Published: 01 January 2002
Fig. 39 Distortion of JIS SCM 440 (0.4% C, 1.05% Cr, 0.22% Mo) steel pinion shafts after oil quenching from 850 °C (1560 °F) while vertically suspended and tempering at 600 °C (1110 °F) More
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Published: 01 January 2002
Fig. 6 Fracture surfaces of failed shafts. (a) and (b) Failure by fatigue. (c) and (d) Failure by torsional shear. See text for discussion. More
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Published: 01 January 2002
Fig. 14 Peeling-type cracks in shafts. (a) and (b) Cracks originated at keyways. More
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Published: 01 June 2019
Fig. 1 Stress-corrosion cracks in cast CF-8M mixer paddle shafts. Cracking was most extensive in deformed area of the shafts More
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Published: 01 June 2019
Fig. 8 Shafts. Microstructure of bolts, longitudinal sections, etch: Nital. 500 × More
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Published: 15 January 2021
Fig. 36 Fracture surfaces of failed shafts. (a) and (b) Failure by fatigue. (c) and (d) Failure by torsional shear. See text for discussion. More
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Published: 01 December 2019
Fig. 1 An on-site inspection and identification of replaced drive shafts identified 6 visually discernable designs among the 28 drive shafts inspected. More
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Published: 01 December 2019
Fig. 9 Comparison of cross sections of the Design 1 and 6 drive shafts. The areas marked with circles are of particular concern because they differ in terms of fillet radii and cross-sectional area. More
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Published: 01 December 2019
Fig. 10 Geometry used in the finite-element analysis for the Design 1 drive shafts More