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fatigue crack growth

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001028
EISBN: 978-1-62708-214-3
... metallographic section obtained through the outer portion of the upper sheet, showed a fully austenitic structure adjacent to the crack, with no evidence of melting or heat-affected zone along the crack boundary ( Fig. 19 ). This indicates that the fatigue crack growth was related to the stress state...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001682
EISBN: 978-1-62708-229-7
... of similar design also known to contain microcracks in weld heat-affected zones. The metallurgical evaluations of the failed expansion joint bellows demonstrated that failure was by fatigue crack growth from intergranular microcracks which resulted from liquation cracking in the weld HAZ. However, the GTAW...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0047414
EISBN: 978-1-62708-233-4
...). This fatigue failure was the result of poor design, which incorporated a notch that acted as a stress raiser, leading to fatigue-crack growth. A generous radius was recommended to avoid similar failures. Radii Stress concentration Steel casting Fatigue fracture Figure 1 shows a fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001576
EISBN: 978-1-62708-219-8
... Abstract Macrofractographs of the fracture surface from a multibladed fan showed that cracks started at the corner where bending stress was concentrated and propagated through the blade by fatigue. Peak stress at the monitoring position was less than 10 MPa. To simulate crack growth, the rotor...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001025
EISBN: 978-1-62708-214-3
.... Note contamination evidence on a large portion of the surface and the existence of two distinct regions. Region I is smooth, flat, and contains beach marks, all features that indicate fatigue crack growth. Region II is rough and dull and possesses large shear lips, indicating that it is the region...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001027
EISBN: 978-1-62708-214-3
... the yoke in the region of the cracking indicated that the failure was caused by fatigue-crack initiation and growth from severe corrosion damage to a pillow-block bolt hole. Corrosion occurred because of failure of the protection scheme. An upgraded corrosion protection scheme for the bolt holes...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... Abstract This article describes three design-life methods or philosophies of fatigue, namely, infinite-life, finite-life, and damage tolerant. It outlines the three stages in the process of fatigue fracture: the initial fatigue damage leading to crack initiation, progressive cyclic growth...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... Crack Growth Under Variable-Amplitude Loading , Fatigue and Fracture , Vol 19 , ASM Handbook , ASM International , 1996 , p 110 – 133 15. Fatigue Failures, Failure Analysis and Prevention , Vol 11 , Metals Handbook ( 9th ed. ) American Society for Metals , 1986 , p 102 – 135 16...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001621
EISBN: 978-1-62708-227-3
...-range cyclic stresses (for example, bending in a shaft) are enough to cause continued fatigue crack growth. In a small number of cases, however, the long-range stresses in the body of the component are insufficient to cause continued propagation. 4 In those cases, the result is shallow, nonpropagating...
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
... 388 . 10.1016/0142-1123(90)90003-W 6. Hull A. , Dainty R.V. , Raizenne M.D. , and Hoeppner D.W. , Fatigue Crack Growth Testing of Compressor Discs , J. Can. Aerospace Inst. , Vol 3 ( No. 4 ), 1986 , p 321 . Selected References • Fatigue Failures , Failure...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... for Metals , 1985 13. Stulen F.B. and Schulte W.C. , Fatigue Failure Analysis and Prevention , Source Book in Failure Analysis , American Society for Metals , 1974 14. Schijve J. , Fatigue Crack Growth Under Variable-Amplitude Loading , Fatigue and Fracture , Vol 19...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001291
EISBN: 978-1-62708-215-0
... for fatigue crack growth during service. It was recommended that the damaged undercarriage struts be withdrawn from service pending further analysis and development of a repair technique. Crack propagation Military planes 35NCD16 Surface treatment related failures Intergranular fracture Fatigue...
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
... Utilities Electric Company (TU Electric) has implemented in response to these failures. High-cycle fatigue is invisible to proven commercial nondestructive evaluation (NDE) methods during crack initiation and the initial phases of crack growth. Under a constant applied stress, cracks grow at accelerating...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... crack growth mechanisms, and final fracture. They have also contributed to the optimization of materials, manufacturing, and component design as well as to the conduction of a proper failure analysis. Table 1 Methods and material characteristics for fatigue design concepts Design philosophy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001144
EISBN: 978-1-62708-217-4
... of the fold pin hole. Further examination of the fracture surfaces revealed an initial smooth area of beach markings which extended approximately 5.6 mm from the origin as shown in Fig. 2 , representative of slow fatigue crack growth. Fractographic analysis of the fractures by scanning electron microscopy...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
.... and Weiner J.H. , Theory of Thermal Stresses , Courier Corporation , 2012 9. Yokobori T. , Yokobori A.T. , and Kamei A. , Dislocation Dynamics Theory for Fatigue Crack Growth , Int. J. Fract. , Vol 11 ( No. 5 ), 1975 , p 781 – 788 10.1007/BF00012896 10. Tang N.Y...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001005
EISBN: 978-1-62708-215-0
... in Fig. 8 . An approximate threshold for fatigue crack propagation of 8.8 Mpa m (8.0 ksi in. ) is also shown ( Ref 1 ). A flaw larger than 0.07 mm (0.003 in.) will propagate by fatigue crack growth under repeated cyclic stressing at a stress amplitude of 903.2 MPa (131 ksi). Fig. 8...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
.... Dowling N.E. and Begley J.A. , Fatigue Crack Growth Under Gross Plasticity and J-Integral , Mechanics of Crack Growth , STP 590, American Society for Testing and Materials , 1976 , p 82 – 103 17. Dowling N.E. , Geometry Effects and J-Integral Approach to Elastic-Plastic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001606
EISBN: 978-1-62708-226-6
.... Recommendations to improve the fixation implant design are suggested, and the potential benefits of the substitution of titanium or a titanium alloy for the stainless steel are discussed. Biomaterials Biomechanics Fatigue crack growth Medical device 300 series Fatigue fracture The use of surgically...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
.... The article concludes with case studies of fatigue life assessment from the aerospace industry. aerospace industry aluminum crack growth software damage-tolerance approach fatigue crack growth fatigue-life assessment fracture mechanics retardation spectrum load steel stress spectrum stress...