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statistical quality control

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260233
EISBN: 978-1-62708-336-2
... Fig. 2 Flow diagram for statistical quality test for purity acceptance Fig. 3 Flow diagram of statistical quality control for extrusion die variables Fig. 4 Flow diagram of statistical quality test for extrusion variables Fig. 1 Typical control chart for any...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440243
EISBN: 978-1-62708-262-4
... control, control charting, and in-process inspection and testing; and applying statistical quality control and final testing (sampling) to verify the results. References References 1. Dossett J.L. , Baker G.M. , Brown T.D. , and McCurdy D.W. , Statistical Process Control...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440283
EISBN: 978-1-62708-262-4
... with test coupons in conjunction with statistical quality control (SQC) on heat treated parts, critical process variations may be identified and controlled. Typical Example of Use: Monitoring Carburizing and Hardening of Gears Reference Reference 1. Dossett J.L. , Baker G.M. , Brown...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110666
EISBN: 978-1-62708-247-1
... control of many process parameters. Slight variations of these parameters can drastically (and negatively) affect product yield [1] . Statistical Process Control (SPC) is a systematic way of controlling quality through the use of statistical process programs or “charts” in a manufacturing process...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720365
EISBN: 978-1-62708-305-8
... Inspection Radiographic Inspection Acknowledgment References References 1. Nondestructive Inspection of Forgings , Nondestructive Evaluation and Quality Control , Vol 17 , ASM Handbook , ASM International , 1989 , p 491 – 511 Many large open-die forgings are forged directly from...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... of which are used to evaluate the soundness of the casting. These inspections add to the cost of the product; therefore, the initial consideration must be to determine the amount of inspection needed to maintain adequate control over quality. In some cases, this may require full inspection of each...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260213
EISBN: 978-1-62708-336-2
... and close control of each parameter or variable of the individual units is an important practice from the quality point of view. Central process and quality control systems may analyze each unit separately and statistically to determine any fault in any unit of the system and to take a necessary preventive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180061
EISBN: 978-1-62708-256-3
... treatment 14 Design error 12 Unexpected operating conditions 9 Inadequate environmental control 5 Improper inspection/quality control 4 Wrong material 3 The various failure origins listed in Table 1 , including improper material selection, fabrication defects, design error...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780075
EISBN: 978-1-62708-268-6
...) on nonconforming material reports. This is especially true in highly regulated industries, such as aerospace, defense, biomedical, cosmetics, and food manufacturers. These records are retained in the organization’s quality-assurance files and database. The failure analysis team should review these records...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050281
EISBN: 978-1-62708-311-9
... involves monitoring all important variables that can affect the processing quality. Table 14.2 provides an example of a malfunction check sheet that can be used to record the processing variables with their limits and settings. The fundamental concept of statistical process control is that process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220667
EISBN: 978-1-62708-259-4
... of an undergraduate research project, a thesis or dissertation, a forensic technical report, quality control documentation, or a report of a development project. It should be evident that the section titled “ Methods ” or “ Materials and Methods ” in a publication “should provide sufficient information to allow...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
..., statistical process control (SPC) is usually incorporated. This means of statistical control can enable continual product manufacturing with minimum testing and a high level of quality. Because many hardness tests are done rapidly, they are well suited for use with SPC techniques. Users are cautioned...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230493
EISBN: 978-1-62708-298-3
... Salient beryllium statistics are based mostly on the beryllium content of beryllium-copper alloys and beryllium metal ( Table 27.1 ). In 2000, approximately 130 metric tons of beryllium contained in postconsumer old scrap was generated; approximately 5 metric tons of beryllium was recycled or reused (1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... also be defined by the degree of variability encountered in a process or service. This concept of quality is the underlying basis of statistical process control. All products and services have variability because it is impossible for all units of a product or service to be made exactly alike...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780089
EISBN: 978-1-62708-281-5
... systems, while the second utilizes these thermal characteristics as the basis for monitoring and control during processing. References References 1. Hadad D.K. , Fritzen J.S. , and May C.A. , “ Exploratory Development of Chemical Quality Assurance and Composition of Epoxy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780081
EISBN: 978-1-62708-268-6
... that work well. In companies that use statistical process control (SPC), the SPC charts are helpful in identifying changes. Operators using SPC are trained to note all process changes directly on the SPC chart, so reviewing these offers insight into process changes not noted elsewhere. Test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850410
EISBN: 978-1-62708-260-0
.... K. , and Glass J. J. : “ The Practical Application of Statistics to the Quality Control of Electroplated Products, ” 48th Annual Tech. Proc. , American Electroplaters’ Society 1961 , pp. 115 – 119 . 26. “ Microscopical Method of Measuring Coating Thickness: An Interlaboratory...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720063
EISBN: 978-1-62708-305-8
... machine vision MACHINE VISION emerged as an important new technique for industrial inspection and quality control in the early 1980s. When properly applied, machine vision can provide accurate and inexpensive 100% inspection of workpieces, dramatically increasing product quality. Machine vision...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860095
EISBN: 978-1-62708-338-6
... of the impregnated carbon-fiber tows. This information is usually significant in IR&D investigations rather than for quality control. ASTM D 2343 gives a test standard for glass-fiber strands that have (importantly) been impregnated with resin. There is a translation efficiency in proceeding from bare fiber...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870219
EISBN: 978-1-62708-299-0
... corrosion testing exfoliation corrosion filiform corrosion pitting corrosion quality control test stress corrosion cracking STANDARDIZED TESTS for determining the susceptibility of aluminum alloys to specific forms of corrosion are the focus of this chapter. Table 1 lists applicable ASTM...