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hydrostatic pressure effects

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230209
EISBN: 978-1-62708-298-3
... composition, impurities, and grain size and the use of hydrostatic testing. beryllium creep properties fatigue properties fracture toughness tensile properties THE EFFECT of the many variables of the material, in the processing and in testing (such as temperature, grain size, impurities...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980059
EISBN: 978-1-62708-342-3
... be interrupted at any time by stopping the stem movement. The risk of total extrusion usually does not occur in the thick film process. On the other hand, in conventional hydrostatic extrusion the die is externally supported by the pressure of the hydrostatic medium, which is advantageous for the stresses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860095
EISBN: 978-1-62708-338-6
... techniques that have been used successfully in the field. The chapter describes the effects of various factors on the properties of composite constituents, including fibers, resins, and unidirectional plies. Some aspects of specimen selection are also described. The chapter provides information on pressure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... expansion and the interface pressure induced are over 500% and 290 ksi (2000 MPa), respectively. In determining the friction factor, f, or the shear factor, m, for hot forming, in addition to lubrication effects, the effects of die chilling or heat transfer from the hot material to colder dies must...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
.... As resin bleeding increases, fiber volume increases, resulting in an increase in the load-carrying capability of the fiber bed and a decrease in the hydrostatic resin pressure. Fig. 7.14 Effect of fiber volume on bulk compressive stress. Source: Ref 3 Once a laminate is collated, it must...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780199
EISBN: 978-1-62708-281-5
... temperature than they are to metals. Two additional influences on the mechanical behavior of polymers are hydrostatic pressure (or the hydrostatic component of the stress) and the aging effect that polymers often undergo at room temperature, depending on their thermal and mechanical history. This article...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400053
EISBN: 978-1-62708-316-4
... to the hydrostatic pressure acting on a structure except that the sign is reversed and can be expressed in terms of hydrostatic pressure: (Eq 5.7) p = − ( σ 1 + σ 2 + σ 3 ) 2 = − ( σ x x + σ y y + σ z z ) 3 The stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500157
EISBN: 978-1-62708-317-1
... Abstract This chapter describes a sheet metal forming method, called hydroforming, that uses pressurized liquid and a shaped punch or die. It discusses the advantages and disadvantages of the two approaches, the effect of process variations, and tooling modifications intended to reduce sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... resulting in subsequent fatigue crack growth Selection and development of materials with improved toughness at the service temperature of –160 °C (–250 °F) Comet aircraft failures 1950s Fatigue crack initiation in pressurized skins due to high gross stresses and stress-concentration effects from...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... into a shape involves the application of heat and pressure, and possibly solvents. The approaches rely on powder with different levels of saturation (pore filling by binder): If pores between particles are saturated with binder or a binder-solvent mixture, then the mixture is formed under hydrostatic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290067
EISBN: 978-1-62708-319-5
... focuses on customizing the feedstock response to heating, pressurization, or solvent exposure as associated with a specific shaping process. References 1. Tam K.C. and Hu X. , The Effects of Binder Characteristics on the Flow and Mechanical Properties of Injection...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
..., and a dead-metal zone is formed in front of the extrusion die. Lubricated extrusion, as the name implies, uses a suitable lubricant, usually glass powder or grease, between the extruded billet and the die. With hydrostatic extrusion, a fluid film present between the billet and the die exerts pressure...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
... of a body-centered cubic structure, shaded to show (a) the diagonal plane along which shear deformation and eventual fracture can occur and (b) one face of the cell, the site of the cleavage mode of fracture References 1. Bridgman P.W. , Fracture and Hydrostatic Pressure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030338
EISBN: 978-1-62708-282-2
.... Beavers J.A. and Jaske C.E. , Near-Neutral-pH SCC In Pipelines: Effects of Pressure Fluctuations on Crack Propagation, Paper No. 98257 , CORROSION/98 , NACE International , 1998 33. “ White Metal Blast Cleaning, ” NACE No. 1/SSPC-SP 5 (latest revision), NACE 34. “ Near-White Metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630169
EISBN: 978-1-62708-270-9
... Abstract This chapter is a detailed account of the general characteristics and effects of and the methods for preventing or reducing different categories of wear failures, namely abrasive (erosive, grinding, and gouging), adhesive, and fretting wear. abrasive wear adhesive wear fretting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040051
EISBN: 978-1-62708-300-3
..., is not important for the start of plastic flow. The mean principal stress is (Eq 5.5) σ m = σ 1 + σ 2 + σ 3 3 and the hydrostatic pressure is (Eq 5.6) P = − σ m Figure 5.7 shows Mohr circles for biaxial and triaxial states of stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... exhibit a hydrostatic pressure dependence in yield stress, and, as a result, there are ordered differences in yield stress data measured in compression, shear, and tension ( Ref 4 ). For PC, this dependence results in a yield stress difference between tensile and compressive data of only approximately 6...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000039
EISBN: 978-1-62708-312-6
... viscosity for the feedstock to flow into the cavity under hydrostatic pressure (>60 MPa, or 8700 psi). Cooling channels in the die accelerate cooling of the feedstock, so that the shape of the molded part is retained after it is ejected from the die cavity. Removal of the binder from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410315
EISBN: 978-1-62708-265-5
.... It then explains how wire drawing, patenting, and the Stelmor process affect microstructure, and describes various fracture mechanisms and how they appear on steel wire fracture surfaces. The chapter concludes by discussing the effects of torsional deformation, delamination, galvanizing, and aging on patented...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240201
EISBN: 978-1-62708-251-8
.... The addition of lubrication and/or Teflon (E.I. DuPont de Nemours & Co., Inc.) strips helps in reducing the frictional forces. Fig. 12.19 Barreling during compression test A solid under hydrostatic pressure ( Fig. 12.20 ) undergoes a volume change called dilatation. If the volume change is Δ...