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rock bolts

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
...., bolt No. 2, Fig. CH28.2 ). The other bolts, 1, 4, and 5, showed a clear pattern of intergranular cracking, with a rock candy appearance. Figure CH28.3 is a typical SEM fractograph. Fig. CH28.2 Fracture surface of bolt No. 2 showing mud cracks Fig. CH28.3 Intergranular cracks seen...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630071
EISBN: 978-1-62708-270-9
... of the section, with multiple cracks that join and spread outward until the 45° shear lip forms at the end of the fracture. Photo courtesy of Packer Engineering Associates, Inc. Fig. 3 Two identical steel bolts that had been given different heat treatments and then pulled to fracture in a tensile test...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... that flooring is generally slip resistant. Polished stone may look pretty—but could be a slip hazard. There are standard tests to check the slip resistance of floors in most countries. An earthquake is a stick-slip event between subsurface rock shelves. Lubrication (with water, etc.) can induce...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630169
EISBN: 978-1-62708-270-9
... stationary but in reality has slight movement between the hub and the shaft. Fretting frequently occurs in “stationary” joints that are “fixed” from shrinking or pressing by interference fits or by bolts, pins, rivets, or other mechanisms, and also at the various contact points in antifriction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... International , 1992 19. Levy E. , Cracking of an Alloy Steel Bolt , Handbook of Case Histories in Failure Analysis , ASM International , 1992 20. Tanner G.M. , Hydrogen Embrittlement Failure of Socket Head Cap Screws , Handbook of Case Histories in Failure Analysis , ASM...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
... makes orbital, spiral, planetary, or straight-line motions. Orbital forging presses. Carbon and low-alloy steels, aluminum alloys and brasses, stainless steels, all forgeable materials. This process is also called rotary forging, swing forging, or rocking die forging. In some cases...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... number of particles removed over a long period of time can produce staggering degrees of erosion. The classic example is the Grand Canyon of the Colorado River. Whenever the dirt particles carried by the river current come in contact with the relatively soft rock of the riverbed, small amounts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
... at temperatures above 540 °C (1000 °F). They were initially developed for use in aircraft piston engine turbosuperchargers. Current applications include: Aircraft gas turbines : disks, combustion chambers, bolts, casings, shafts, exhaust systems, cases, blades, vanes, burner cans, afterburners, thrust...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300227
EISBN: 978-1-62708-323-2
... is to use only a 50% thread on threaded holes in stainless steel that will mate with stainless steel bolts. The use of an oversized tap drill solves the problem (most of the time). The galling and seizure problem that was just discussed suggests that stainless steels are not particularly suited to self...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180029
EISBN: 978-1-62708-256-3
... out, but instead of replacing them, the airline mechanics bolted them down and immobilized the thrust reversers—rendering them essentially useless when the planes landed. The pilots had to step down hard on the brakes to stop the planes, thus quickly wearing out the brake pads. The difference...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... to achieve the optimum combination of properties desired for a particular part. Many nonmetals lack ductility and normally are subject to brittle fracture; examples are chalk, rock, brick, and—under normal conditions of use—glass. However, as soon as glass is mentioned, one must be careful to qualify its...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... , Proc. Fourth International Conference on Fracture , June 1977 ( Waterloo Canada ), p 61 8. Wilsforf H.G. , Mater. Sci. Eng. , Vol 59 , 1983 , p 1 9. Bøgner B. , Rørvik G. , and Marken L. , Bolt Failures—Case Histories from the Norwegian Petroleum Industry...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860065
EISBN: 978-1-62708-338-6
... filament-wound material, except for the balsa and brass fittings ( Fig. 6.22 ). It is called a car top because it weighs 60 to 65 lb (27 to 29.5 kg). The mandrel was a series of boxes bolted together and removed from the overwound cockpit area, then discarded after cure. The quantity of edge-grained balsa...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
... Sliding:  Lubricated, such as engine crosshead or shaft in a bearing  Nonlubricated, such as fasteners, nuts, and bolts Rolling:  Lubricated, such as roller bearings and gears  Nonlubricated, such as wheels on tracks Liquid or vapor impingement on metals Wet steam, such as turbines...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... of ferromagnetic materials Cold shuts (casts) Liquid penetrant inspection Surfaces of most metals; smooth regular line; casts difficult x-radiography Distinct dark line Fillet cracks (bolts) (wrought metals) Ultrasonic testing Extensively used; sharp reflection Liquid penetrant inspection All...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... in the direction of arrow. Grain boundaries were crossed without apparent effect. Original magnification at 2000× Fig. 8 Intergranular fracture in hardened steel, viewed under the scanning electron microscope. Note that fracture takes place between the grains; thus the fracture surface has a “rock-candy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
... in heading tool recess. (d) Stock supported in heading tool recess and die impression. Source: Ref 10 Although hot upsetting originally was restricted to single-blow heading of parts such as bolts, present-day machines and tooling permit the use of multiple-pass dies that can produce complex shapes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030360
EISBN: 978-1-62708-282-2
... continuity Electrostatic dehydration arrangements, including the security of any internal cables Security, tightness, and general condition of bolting Other fittings such as demisters, vane packs, filter supports, etc. Risk-based inspection allows operators to manage the integrity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.9781627083386
EISBN: 978-1-62708-338-6