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data interpretation

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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006762
EISBN: 978-1-62708-295-2
...Abstract Abstract As a failure investigation progresses, the time arrives when the data and results of the various testing and analyses are compiled, compared, and interpreted. Data interpretation should be relatively straightforward for results that align well. However, interpretation can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001640
EISBN: 978-1-62708-235-8
... by the presence of surface imperfections. Improving the surface finish or choosing a stronger alloy, were more likely to improve part durability than reducing the porosity. Complex failures Data interpretation Deviations from ideality Thinking errors Aluminum casting Casting-related failures A new...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... or ground with 60-grit grinding paper. ICP-OES requires chips for acid digestion. Qualitative methods require subjective judgement by an experienced user to interpret the data and the results are not considered accurately quantifiable. Some methods allow for the results to be easily manipulated or biased...
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
... were able to rapidly convert laboratory test data into useful and easily interpreted engineering information. We were able to obtain an accurate definition of the early life characteristics of the door lock assembly, using a relatively small sample size. We were able to determine...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006754
EISBN: 978-1-62708-295-2
... required to interpret the images is less widely available. The other major type of defects, those related to design issues, may also require the assessment of a materials engineer. This is because many design engineers are not very familiar with the natural variations within a material grade. Evaluation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003518
EISBN: 978-1-62708-180-1
.... This is an important point, because many people believe that the failure analyst should operate “blindly” in order to avoid clouding his or her judgement. However, data may be interpreted in widely varying ways by different people, or even by the same person at different times or in different circumstances. This must...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001580
EISBN: 978-1-62708-229-7
...Abstract Abstract Laser surface mapping of a canister closure weld provided data that was used to generate three-dimensional images of the weld failure. These images were invaluable in that they allowed people who did not have access to the canister to see the anomaly in great detail...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
...., comparison of the toughness of the failed material as received and after various experimental heat treatments). Certain types of simulation tests require accelerated testing to obtain the desired information in a reasonable length of time. Interpretation of accelerated test data must be done with care...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
..., as well as information on specimen preparation, test conditions and procedures, and data interpretation. In both cases, the test apparatus is calibrated, and comparisons of the relative resistances of materials are made by the use of reference materials. Vibration is responsible for significant...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
...Abstract Abstract The goal of using nondestructive evaluation (NDE) in conjunction with failure analysis is to obtain the most comprehensive set of data in order to characterize the details of the damage and determine the factors that allowed the damage to occur. The NDE results can be used...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006770
EISBN: 978-1-62708-295-2
... during a failure analysis investigation. Valid interpretation of EDS data must rely on examination of the full EDS spectrum and knowledge of the analysis conditions. Clearly, it is important in any failure analysis to know the material comprising the failed component. Qualitative analysis is often...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
..., and wear failures. The article provides information on the synthesis and interpretation of results from the investigation. Finally, it presents key guidelines for conducting a failure analysis. chemical analysis corrosion failure corrosion testing data collection failure analysis fracture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... intensity versus average asperity height for fatigue crack propagation in IN-718 nickel-base alloy. The data include specimens of two different grain sizes tested at three different Δ K levels. Source: Ref 6 Fig. 9 A schematic fracture profile containing overlapped (or reentrant) segments...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0048728
EISBN: 978-1-62708-228-0
... by energy-dispersive analysis of the deposits. It was interpreted by the hardness values (higher than typical for annealed copper tubing) that the tubes may not have been annealed after the U-bends were formed and thus the role of residual stresses in the crack was revealed. It was concluded that the tubes...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001629
EISBN: 978-1-62708-235-8
... in order to facilitate quantification of the analyzed elements. Careful interpretation of SIMS data by an experienced analyst is essential because sputtering may alter the composition of the sample surface. The analysis results showed evidence of a thicker oxide layer in a typical discolored region...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003515
EISBN: 978-1-62708-180-1
... “nondestructive inspection,” “testing,” and “evaluation” are occasionally used somewhat synonymously, the word “evaluation” has become increasingly associated with those methods for which quantitative interpretation of the test results in terms of characteristics of the material or defects is possible...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001545
EISBN: 978-1-62708-236-5
... a firm believer in this modified Murphy's Law: “Whenever an improper interpretation relative to cause of a failure is made, the resultant actions — the cure — can produce conditions far worse than the original illness.” So that you can better appreciate the basis of my concern, I'll review three...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089534
EISBN: 978-1-62708-223-5
... 150 deg C by the hardness values (close to the maximum hardness values attainable) for the core. It was interpreted that the low tempering temperature used may have contributed to the brittleness. The procedures used for casting the jaws were recommended to be revised to eliminate the internal...
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 Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0005695
EISBN: 978-1-62708-180-1
... analysis can be confusing or interpreted variously by different persons. Cases in point include mode, stress cracking, ductile, brittle , and cleavage . An example of the evolution of definitions, as previously noted, is the term quasi-cleavage, which is truly a form of cleavage and a microscale...