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manufacturing imperfections

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... geometric factors and materials aspects that influence the stress-strain behavior and fracture of ductile metals. It highlights fractures arising from manufacturing imperfections and stress raisers. The article presents a root cause failure analysis case history to illustrate some of the fractography...
Book Chapter

By R.J. Glodowski
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001016
EISBN: 978-1-62708-161-0
... for the manufacture of carbon steel wire is produced with manufacturing controls and inspection procedures intended to ensure the degree of soundness and freedom from injurious surface imperfections necessary for specific applications. This article also describes the various quality descriptors applicable to the rods...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... materials always have some imperfections or discontinuities that can be acceptable, if they do not interfere with the utility or service of a part. Laps, seams, bursts, hot tears, and thermal cracks are typically considered to be manufacturing defects. However, whether these manufacturing defects...
Image
Published: 01 January 2005
Fig. 16 Conventional hollow cam cylinder forging, used in the manufacture of stationary propeller cams. The upper section shows machined contours in phantom, and the lower view indicates grain flow. See Example 10 . Dimensions in figure given in inches Item Conventional forging More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003095
EISBN: 978-1-62708-199-3
... detrimental surface imperfections. Proper control of hardness and microstructure by heat treatment and cold working is important for cold forming. Axle Shaft Quality Axle shaft quality applies to cold-finished alloy steel bars intended for the manufacture of automotive or truck-type, power-driven axle...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... Abstract The primary purpose of this article is to describe general root causes of failure that are associated with wrought metals and metalworking. This includes a brief review of the discontinuities or imperfections that may be common sources of failure-inducing defects in the bulk working...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001478
EISBN: 978-1-62708-173-3
... the last step in the manufacturing process. However, quality issues must be addressed during every stage, that is, during the design, prototype development, production, and service of the brazed assembly. The requirements for a brazed assembly must be formally established among the design authority...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001014
EISBN: 978-1-62708-161-0
... are produced for the manufacture of power-driven axle shafts for cars, trucks, and other vehicles. Because of their design or method of manufacture, these axles either are not machined all over or undergo less than the recommended amount of stock removal for proper cleanup of normal surface imperfections...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002468
EISBN: 978-1-62708-194-8
... for the wall thickness below which the wall itself becomes unstable and causes local buckling. Experience shows that the values of P cr calculated according to Eq 12 are higher than the buckling loads observed in practice. The discrepancy is usually attributed to manufacturing imperfections...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006814
EISBN: 978-1-62708-329-4
... Abstract Welded connections are a common location for failures for many reasons, as explained in this article. This article looks at such failures from a holistic perspective. It discusses the interaction of manufacturing-related cracking and service failures and primarily deals with failures...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
..., bending, torsion). Finally, the factors influencing the appearance of a fracture surface and various imperfections or stress raisers are described, followed by a root-cause failure analysis case history to illustrate some of these fractography concepts. brittle fracture crack nucleation crack...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003141
EISBN: 978-1-62708-199-3
... also reduces oxygen-rich or nitrogen-rich inclusions in the microstructure to a very low level by providing an additional melting operation to dissolve them. Engine manufacturers usually require triple melting for rotating grade material. Segregation and other compositional variations directly...
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
... metallographic examination microfractography process simulation visual examination X-ray techniques FAILURES may be caused by any of the following factors or combinations of factors: Design shortcomings Material imperfections due to faulty processing or fabrication Overloading and other...
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
... 1823). There are a group of terms used to describe deviations from ideality and that are in some instances the technical root cause for failure. They include imperfection , discontinuity , defect and root cause. In some instances these terms are used interchangeably by some writers...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006828
EISBN: 978-1-62708-329-4
... Abstract The various methods of furnace, torch, induction, resistance, dip, and laser brazing are used to produce a wide range of highly reliable brazed assemblies. However, imperfections that can lead to braze failure may result if proper attention is not paid to the physical properties...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... the distinction between a manufacturing imperfection and a manufacturing flaw (or defect). Manufactured components may contain geometric and material imperfections or nonconformities, but whether an imperfection caused a failure is critical in the determination of root cause. Manufacturing imperfections...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... propagation Fabrication imperfections that influenced crack initiation and/or crack propagation In the latter case, it is very important to make the distinction between a manufacturing imperfection and a manufacturing flaw (or defect ). Manufactured components typically contain geometric...
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
... fracture) occurs from crack propagation by ductile and/or brittle fracture mechanisms. The failure mechanism also may be may be a combination of design and/or manufacturing imperfections acting to cause crack initiation. In many cases a metallurgical failure analysis will provide sufficient information...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... to differentiate between primary and secondary damage are material flaws and welding flaws. Material imperfections can be the source of potential failure initiation sites in any component system. They pertain to deficiencies in manufacture and installation of material compared with expected and specified quality...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006054
EISBN: 978-1-62708-175-7
... diagram of depth of cut (DOC) in grinding As-sintered cemented carbide has a surface finish of approximately 1.3 to 1.5 μm (50 to 60 μin.) and can have surface irregularities and imperfections 25 μm (several thousandths of an inch) deep as a result of the sintering operation. The as-sintered...