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expansion taps

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001358
EISBN: 978-1-62708-215-0
... leak out after only a few minutes. All areas displaying cracks were documented. Ring Testing Ring testing was also conducted on the diaphragms, not only to determine the condition of the vane-to-shroud welds, but also to help locate cracks in the vanes themselves. Each vane was lightly tapped...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
...: Drilling of and installation damage to the composite Delamination of the composite material around the hole and pullout of the fastener under load Differences in expansion coefficients of the composite and the fastener Galvanic corrosion between the composite hole wall and the fastener Moisture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... of and installation damage to the composite, delamination of the composite material around the hole and pullout of the fastener under load, differences in expansion coefficients of the composite and the fastener, galvanic corrosion between the composite hole wall and the fastener, moisture and fuel leaks around...
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
... a 1035 kPa (150 psi) pressure test using tap water. All surfaces were to have been passivated according to MIL-S-5002 before assembly, but no other cleaning techniques were stipulated. Investigation The failed braze had joined a convolute bellows to a cup on the end of a tube elbow ( Fig. 1a...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006910
EISBN: 978-1-62708-395-9
... are created by tapping a fresh, unused razor blade into the machined notch immediately preceding the test. If the pre-cracks cannot be successfully initiated by tapping, a sufficiently sharp crack shall alternatively be generated by sliding or sawing a new razor blade across the notch root. The samples...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
..., usually parallel to casting surface D 231 (a) Plate-like metallic projections with rough surfaces parallel to casting surface; removable by burr or chisel Scabs, expansion scabs D 232 (a) As above, but impossible to eliminate except by machining or grinding Cope spall, boil scab, erosion...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... during thermal cycles because of differential thermal expansion, with the steel having a greater expansion coefficient than the scale. The high density of inclusions was assumed to be the result of improper cropping of the ingot from which the tube for the return bend was made. Conclusions...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... parallel to casting surface; removable by burr or chisel Scabs, expansion scabs D 232 (a) As above, but impossible to eliminate except by machining or grinding Cope spall, boil scab, erosion scab D 233 (a) Flat, metallic projections on the casting where mold or core washes or dressings...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... was not at the surface. The origin was at the apex of a tapped bolt hole that had been drilled from the back face of the gear and had terminated less than 6.4 mm (0.25 in.) from the root radius. Subsequent progression of the fatigue crack was to the surface at the root radius as well as into the core toward the zero...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... by expansion rolling of boiler and heat exchanger tubes into holes in tube sheets. Tensile residual stresses at the surface are generally detrimental in terms of SCC, while compressive residual stresses (from shot peening or other processes) are beneficial. Under some circumstances, severe uniform cold working...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... of equipment and components, additional, unexpected stresses can result in SCC failures. Examples of unexpected stresses include: Misalignment during fabrication and installation Thermal expansion/contraction due to unexpected heating/cooling (e.g., doors left open, insufficient insulations, etc...