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free-surface cracking

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270156
EISBN: 978-1-62708-301-0
... of the crack. There were no other visible damages to the blade and the vent holes were free from any blockages. Fig. CH39.1 Tail rotor blade in the as-received condition Fig. CH39.2 Tail rotor blade with cracking at the joggled line (arrow) Testing Procedure and Results Scanning...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270135
EISBN: 978-1-62708-301-0
... on the inner surface of the shroud hole, in region C. Deep rub marks were noticed on the cylindrical surface in region D. Region E of the surface perpendicular to the fracture surface had cracks and also evidence of deformation ( Fig. CH30.3 ). Region F was free from cracks. Fig. CH30.3 Cracks...
Image
Published: 30 November 2013
Fig. 20 Sketch of a Belleville spring washer showing how fatigue cracks can form in a nominally compressive stress area. The spring, actually a cone-shaped spring steel washer, is shown in the (a) free condition and in the (b) flattened condition. When flat, the corner of the hole More
Image
Published: 01 September 2008
Fig. 14 Fatigue striations in (a) interstitial-free steel and (b) aluminum alloy AA2024-T42. (c) Fatigue fracture surface of a cast aluminum alloy where a fatigue crack was nucleated from a casting defect, presenting solidification dendrites on the surface. Arrow at top right indicates fatigue More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270084
EISBN: 978-1-62708-301-0
... is homogeneous and free from porosity and voids. nut had been sheared off. Close examination all around the fracture surface indicated se- Testing Procedure and Results vere circumferential cracking near the llet of the ange, parallel to the fracture surface, as shown in the SEM (Fig. CH10.5). Metallography...
Image
Published: 01 December 2006
Fig. 28 Internal surface of the flange was free of corrosion. Several secondary stress-corrosion cracks penetrated the flange thickness. 1.5× More
Image
Published: 01 December 2006
Fig. 21 The internal surface of this pipe section was free of general and pitting corrosion and was covered with a thin, adherent oxide layer. Cracks had initiated in the weld and HAZ. More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630071
EISBN: 978-1-62708-270-9
... Abstract In order to understand how various types of single-load fractures are caused, one must understand the forces acting on the metals and also the characteristics of the metals themselves. All fractures are caused by stresses. Stress systems are best studied by examining free-body diagrams...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270180
EISBN: 978-1-62708-301-0
... where the studs were fixed had no threads machined for an initial depth equal to about three threads. The leading thread in the stud was thus well inside and not at the shear region ( Fig. CH49.4 ). With this kind of free, unrestricted length of the stud, every time the load is applied, a fluctuating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000203
EISBN: 978-1-62708-312-6
... the sintering temperature. These are oxides of silicon, and their formation is promoted by a high dew point of the sintering atmosphere and slow rate of cooling from sintering temperature Fig. 22 SEM image of as-sintered surface of a 434L part showing an oxide free surface, achieved by sintering...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910497
EISBN: 978-1-62708-250-1
... of marine organisms on a submerged metal surface and also includes the accumulation of deposits (usually inorganic) on heat exchanger tubing. free corrosion potential. Corrosion potential in the absence of net electrical current flowing to or from the metal surface. fretting corrosion. The accelerated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1
Image
Published: 01 August 2018
Fig. 12.50 (a) Longitudinal cross section of a bolt machined from AISI 303 stainless steel, subjected to vibration testing. Fatigue cracks are present in the thread root. Large quantity of sulfides (nonmetallic inclusions), since this is a free cutting steel. The structure corresponds More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030380
EISBN: 978-1-62708-282-2
... glass. amphoteric. A term applied to oxides and hydroxides that can act basic toward strong acids and acidic toward strong alkalis. Substances that can dissociate electrolytically to produce hydrogen or hydroxyl ions according to conditions. anaerobic. Free of air or uncombined oxygen. anchorite. A zinc...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930057
EISBN: 978-1-62708-359-1
.... Visual examinations are only effective for surface defects, which are not common in this process. Friction Welding If impurities are properly dispelled during upsetting, friction or inertia welds are generally free of voids and inclusions. Incomplete center fusion can occur when flywheel speed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090333
EISBN: 978-1-62708-266-2
... in the specimens ( Table 13.1 ). The amounts of hydrogen absorbed during tensile testing in the corrosive solution, where cracking occurred, are high enough to induce local embrittlement in comparison with those in crack-free specimens traction tested in 5 N H 2 SO 4 without chloride. Amount of hydrogen...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... (0.18 in.) thickness. Investigation and Findings Visual examination of the failed tube sample revealed fine multiple and parallel cracks in the transverse (circumferential) direction. The outer surface of the tube was dark brown in color. Overall, the piece appeared straight and free from any...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130111
EISBN: 978-1-62708-284-6
... the crack begins to propagate rapidly, a shear lip is formed wherever the crack front exits from the interior to the free surface. Beach marks, which are associated with fatigue-initiated fractures, also provide a definite indication of the crack origin; however, it should be noted that fracture surfaces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440243
EISBN: 978-1-62708-352-2
... force gauss (alternate cgs-emu system) Gibbs free energy enthalpy heat-affected zone acceleration due to gravity height of solder cap dissolution rate constant stress concentration factor Boltzman constant represents a metal in a reaction microelectromechanical system multi-chip modules parts per...