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Published: 01 January 2002
Fig. 51 Effect of sample size on the fracture of notched samples tested in slow bending. Data are normalized to the sample size for comparison. b , specimen width; d , retained depth at bottom of notch More
Image
Published: 15 January 2021
Fig. 51 Effect of sample size on the fracture of notched samples tested in slow bending. Data are normalized to the sample size for comparison. b , specimen width; d , retained depth at bottom of notch More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001732
EISBN: 978-1-62708-218-1
... values. To resolve the sample size problem, we decided to construct a fixture capable of cycling twelve lock assemblies simultaneously. To save time and expense, the test would be concluded when there was sufficient data available for analysis, rather than run all samples to failure. The first step...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... require multiple samples Properties can be specimen-size dependent Unidirectional compression Yield strength Tensile strength Ductility Components may not be conducive to a test specimen Anisotropic materials require multiple samples Bend Ductility Bending is not a mechanical property...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006766
EISBN: 978-1-62708-295-2
... and seal the stand opening. Typical stand openings range in size from 2 to 10 mm (0.08 to 0.40 in.). Tray inserts or ceramic inserts are available for most instruments to provide a range of openings. Sample stands can also be interchangeable to provide a range of openings. Equipment, such as wire holders...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006803
EISBN: 978-1-62708-329-4
... of the Monte Carlo simulation method and work performed at the Los Alamos National Laboratories at the end of World War II ( Ref 12 ). The limitation of the original method is the large sample size required for convergence, which can become a problem when the individual “deterministic” model evaluation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001688
EISBN: 978-1-62708-234-1
... on the basis of the microstructural changes observed did not give cause for any immediate concern, although the sample size was small, and it was considered that a more extensive study should be made, particularly as the ruptured tube bend indicated that much higher local temperature existed locally than...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001079
EISBN: 978-1-62708-214-3
..., including tensile, Charpy V-notch impact, and fracture toughness. Because of the limited sample size, standard specimens were fabricated by electron beam welding similar material attachments. This method also allowed determination of the properties in the proper orientation of interest—namely, the axial...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001266
EISBN: 978-1-62708-215-0
... fracture. Metallographic examination of samples revealed an extremely large grain size and corroborated fatigue fracture. Chemical analysis indicated that the material conformed to the requirements for type 316L stainless steel. Substandard-size tensile bars machined from another prosthesis from the same...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001135
EISBN: 978-1-62708-219-8
... size measurements were made per ASTM E112. Following the initial examination samples were categorized as to the severity of the segregation problem and representative samples were chosen for chemical and hardness evaluation. Charpy V-notch samples were then machined from the longitudinal direction...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... and the filament, the resultant field emission of electrons produces a much smaller crossover point than for a conventional thermionic SEM, which produces their higher resolving capabilities by allowing a smaller electron beam spot or probe size on the sample surface. Once the focused electron beam passes...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... and depth of field obtained is determined by the relationship between the probe size, the angle of convergence of the beam to produce this probe, and the pixel size on the sample. The pixel size is determined by the magnification and may be thought of as a discreet area on the sample where data is taken...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0060154
EISBN: 978-1-62708-234-1
... from different sections (ruptured area, slightly bulged but nonruptured area and visually sound metal) were inspected. The presence of pinhead-size intergranular fissures throughout the cross sections of the latter two samples was observed. An ultrasonic attenuation method was employed to investigate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046015
EISBN: 978-1-62708-235-8
.... The fracture surfaces were examined visually and by optical (light) stereomicroscopy. Material testing showed a sample to be within the specified material limits for aluminum alloy 6061. Microscopic examination showed no significant differences in microstructure or grain size among the four T-sections...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048791
EISBN: 978-1-62708-234-1
... of a sectioned and oxalic acid etched sample. The grain size was found to exceed the ASTM standard. No indications of sensitization were observed during testing with practice A of ASTM A 262. Definitive evidence of contaminants to support SCC as the failure mechanism was not disclosed during analysis...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001768
EISBN: 978-1-62708-241-9
... at service. One splice plate angle piece about 0.5 m length was collected for the study. Sample blocks of appropriate sizes were cut in the longitudinal direction both from the heel portion (corner) as well as from the edge portion of the angle for chemical analysis, hardness measurement, tensile testing...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001815
EISBN: 978-1-62708-241-9
... not be of sufficient magnitude to cause this fracture mode, since the bolt pre-stress would have to have been released. Releasing the pre-stress would result in system leakage and shut-down before cracking of the pins. Additionally, the grain size was significantly smaller in the failed samples, contrary...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001596
EISBN: 978-1-62708-225-9
... testing for these two compressor models. In fact, for such a small sample size, more tests should be run to verify acceptance of the springs to the levels in Table 7 . To test the springs at a confidence level of 95% (5% probability of accepting lot when lot is unacceptable) 59 springs with no failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001715
EISBN: 978-1-62708-219-8
... ferrite (pro-eutectoid ferrite). The grain size (or pearlite colony size) of the prestressed wire varies between wire samples and with location within a given sample. The grains are small, however, which improves the toughness of the wire and its resistance to hydrogen embrittlement. 1 The grains...