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statistical quality control

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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
... to permit adequate annealing of all subsequent experimental links. Had this been a production component, quality control would have been altered so that they could initiate reasonable processing controls. Fig. 5 Actuating link failure. Evaluation of Corrective Action A new group of 12 lock...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001699
EISBN: 978-1-62708-234-1
... system was not possible. The cause of the observed corrosion of steel piping was a lack of proper corrosion monitoring and control of the cooling water quality. Consistent, appropriate corrosion monitoring and control actions were recommended. This would help to prevent pitting corrosion damage...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... be factored with time is also important when looking at failure patterns ( Fig. 3 ). Early life failures are often associated with fabrication issues, quality-control issues, or initial “shakedown” stresses, while age-related failure rates would increase with time. This is discussed in more detail...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... of a consumer ( Ref 12 ). These characteristics of quality also apply internally to those in organizations, either in the services, or in manufacturing, operating, or administering products, processes, and systems ( Ref 12 ). Computer software systems for quality control have also gained prominence. The intent...
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
... as well as several statistical techniques. Finally, it illustrates some of the techniques with application problems for which probabilistic analysis is an essential element. discrete probability distribution sampling Latin hypercube sampling Monte Carlo sampling probabilistic life assessment...
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
... paper suggested that rational methods of developing safety factors for engineering structures should give due consideration to observed statistical distributions of the design factors. It was not until the 1960s that rapid growth of academic interest in structural reliability theory occurred, stimulated...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
... become an unruly mob? When the investigator lets it become one. A potential solution to maintaining control of a failure investigation team is delegation of work and creation of subteams. One choice is to break into subteams by organizational groups: management quality, manufacturing, and technical...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003519
EISBN: 978-1-62708-180-1
.... A bird may be ingested into an engine at takeoff or landing. The engine must be able to handle a bird strike without an uncontained failure, fire, or engine mount failure. An engine must be able to shut down in a controlled fashion to pass this U.S. Federal Aviation Administration requirement. The jet...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003505
EISBN: 978-1-62708-180-1
... of excessive carbide segregation. Plaintiff alleged defective design, defective manufacture, unsuitable or defective material, lack of sufficient quality control, and failure to foresee. The defendant manufacturer believed the twist drill met all specifications for M1 high-speed steel. Both...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006832
EISBN: 978-1-62708-329-4
.... Manufacturing defects are defects acquired during the manufacturing process, which may or may not compromise product safety. Manufacturing defects not discovered through internal quality audits and inspections may cause a defective product to become introduced into the stream of commerce. Warnings defects...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... and cracks, while methods such as radiography and ultrasound are capable of detecting imperfections within a part. Other methods are more suited for online monitoring, which is a quality-control function in production systems. Also, there are many NDE methods used for condition monitoring of parts in service...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... be put in place to avoid unintended consequences of altering the environment, such as the introduction of a contaminant. In some cases, an environment is subject to seasonal changes such as changes in water quality and temperature. Controls must then be seasonally adjusted as well. Controlling the pH...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
... provides a sensitive analysis of the quality of coatings on thin substrates. Uniformity and thickness of the coatings are crucial to the performance of the coated films. These factors are largely controlled by the wetting properties and the rheology of the coating during application. In Fig. 17...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001531
EISBN: 978-1-62708-231-0
... into five types: shelling, spalling, flat, rim cracking, and brittle fracture. The brittle fracture of wheels occurs very infrequently and can be prevented by regular quality control (compositional analysis, mechanical testing, and physical inspection). If brittle fracture occurs on only one wheel, then all...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
...). The identification and elimination of the root cause of failure becomes extremely difficult if the controls and records of these controls are shoddy or nonexistent. Thus, most manufacturing companies have statistical quality-control and statistical process-control programs that document and analyze incoming...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... such as: Selection of an appropriate test for ranking and screening, performance testing, design data, and quality-assurance/quality-control (i.e., conformance to design standards/codes) purposes Knowledge of existing standards/legislative requirements An understanding of the material characteristics, test...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006938
EISBN: 978-1-62708-395-9
..., the designer generally cannot fully prevent these other failure types. Product designers, however, define material choice, shape, tolerance, finish, and function, and provide critical input into the selection of manufacturing methods and quality control. This article can assist in both failure analysis...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
...-dispersive x-ray spectroscopy (WDS) is a quantitative microchemical analysis technique performed in conjunction with SEM. Energy-dispersive x-ray spectroscopy and WDS are complimentary to each other. Quantitative WDS is used extensively in process and quality control of metals, ceramics, cement, minerals...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006817
EISBN: 978-1-62708-329-4
... on the condition that the check revealed low air pressure. It is possible to look for potential failure by using specialized condition-monitoring equipment, existing process instrumentation (such as flow rates, pressures, and temperatures), existing quality management techniques (such as statistical process...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
..., such as the American Society of Mechanical Engineers (ASME), the American Bureau of Shipping (ABS), and European agencies have pressure vessel design codes. Strict adherence to these codes for the design, fabrication, testing, and quality control and assurance allows the finished pressure vessel to be certified...