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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001516
EISBN: 978-1-62708-234-1
... Coated Al-Mg-Si Electroless nickel (Other, miscellaneous, or unspecified) failure Introduction Data storage disk drives are rightly called the minds of computers and are necessary for essentially all important functions of a computer. Disk drives are small complex machines consisting...
Image
Published: 01 June 2019
Fig. 4 Theoretical fatigue input image/Fourier transform pair: (a) computer generated parallel lines with two repeat frequencies; (b) resulting Fourier transform power spectrum. More
Image
Published: 01 December 2019
Fig. 2 Front ( a ) and rear ( b ) views of the BSR computational model developed for numerical structural analysis More
Image
Published: 01 December 1992
Fig. 21 Hub-to-blade computer simulation of stress contours values × 207 MPa (30 ksi). (a) 13 mm (0.5 in.) radius. (b) 50 mm (2 in.) radius. All contour plot numbers given in psi. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047968
EISBN: 978-1-62708-225-9
... Abstract The radial-contact ball bearings (type 440C stainless steel and hardened) supporting a computer microdrum were removed for examination as they became noisy. Two sizes of bearings were used for the microdrum and a spring washer that applied a 50 lb axial load on the smaller bearing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001711
EISBN: 978-1-62708-229-7
... Abstract Failures of 10Cr-Mo9-10 and X 20Cr-Mo-V12-1 superheated pipes during service in steam power generation plants are described. Through micrographic and fractographic analysis, creep and overheating were identified as the cause of failure. The Larson-Miller parameter is computed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
... and is commonly computed by classical design or limit analysis. This article discusses the common aspects of failure by distortion with suitable examples. Analysis of a distortion failure often must be thorough and rigorous to determine the root cause of failure and to specify proper corrective action...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... with a functional failure. Then, a more general consideration of distortion in failure analysis is introduced. Several common aspects of failure by distortion are discussed and suitable examples of distortion failures are presented for illustration. The article provides information on methods to compute load limits...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... Abstract When complex designs, transient loadings, and nonlinear material behavior must be evaluated, computer-based techniques are used. This is where the finite-element analysis (FEA) is most applicable and provides considerable assistance in design analysis as well as failure analysis...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001777
EISBN: 978-1-62708-241-9
... Front ( a ) and rear ( b ) views of the BSR computational model developed for numerical structural analysis Fig. 3 Front region of BSR after the collapse Fig. 5 Ratios of maximum load to structural resistance are displayed in the gray boxes. The box outlined in red represents...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
.... Fig. 20 FIV in water. (a) Pendulum (lst mode).(b) n = 2 (2nd mode). Fig. 21 Hub-to-blade computer simulation of stress contours values × 207 MPa (30 ksi). (a) 13 mm (0.5 in.) radius. (b) 50 mm (2 in.) radius. All contour plot numbers given in psi. Fig. 23 Displacement response...
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
... than a large-scale accident. The approach presented is that the analysis and reconstruction is based on the physical evidence. The article provides a brief review of some general concepts on the use and limitations of advanced data acquisition tools and computer modeling. Legal implications...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003514
EISBN: 978-1-62708-180-1
... components to design for appropriate levels of safety. Computational resources are becoming less of an impediment through enhancements in computational algorithms and computer efficiency. Factor of safety approaches may not give the desired reliability or may lead to overdesigned structures...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006763
EISBN: 978-1-62708-295-2
.... Nondestructive inspection may be required to document cracks present in a component. Computed tomography radiography may be required to fully characterize a failed component. Component failure simulation testing, if performed, should be photographically documented in a manner similar to the documentation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003523
EISBN: 978-1-62708-180-1
... consists of simple mathematical modeling of a physical system or more complex computer modeling of a system or part, the modeling technique may directly or indirectly give insight to the cause of an accident. Accident Reconstruction The term “accident reconstruction” has traditionally been used...
Image
Published: 01 December 1992
Fig. 6 Plot of typical stress-scaling factors versus crack depth obtained by repeated computation of incremental crack depths using the actual loading history modified by a synthetic “fatigue meter”. More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
..., displacements, temperatures, vibrations, and other service-related factors that the part experiences. It may also include numerous analytical, classical, and computer techniques that are available to assist in a structural design failure analysis. A traditional closed-form analytical technique such as beam...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001797
EISBN: 978-1-62708-241-9
... over a range of speeds . J. Mech. Des. Trans. ASME 117 , 1157 – 1164 ( 1995 ) 10.1115/1.2826102 11. Sergeyev V.I. : The investigation of the accuracy of nonautomated friction devices . In: Problems of the Design and Accuracy of Complex Continuous-Action Devices and Computer...
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
.... , Fedorko G. , Fabian M. , Kmet S. : Computer modeling of wire strands and ropes part I: theory and computer implementation . Adv. Eng. Softw. 42 , 305 – 315 ( 2011 ) 10.1016/j.advengsoft.2011.02.008 10. Stanova E. , Fedorko G. , Fabian M. , Kmet S...
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
... fatigue crack. The scale markings are 0.1 in. Fracture Mechanics Approach In principle, the stresses can be computed by measuring the final crack size and shape and noting that at fracture the stress intensity parameter is equal to the plane-strain fracture toughness K Ic . The problem...