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surface geometry

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Published: 30 April 2020
Fig. 11.10 Example wear surface pattern taken from the geometry found in snake skin. This is an example of biologically inspired design. Powder-binder processing routes, such as via additive manufacturing, provide a means to adjust morphology and composition to mimic such a structure. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390456
EISBN: 978-1-62708-459-8
... influenced by tool wear. Indeed, many general wear mechanisms are also related to cutting. Therefore, machining could be taken as a capstone topic to illustrate the important branches of tribology. Machining is mainly valuable because the requisite tolerances, surface finish, or geometry can often...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040001
EISBN: 978-1-62708-300-3
... Abstract This chapter provides a brief introduction to manufacturing processes used to produce metal parts and how they differ in terms of achievable geometries, tolerances, surface finishes, and production rate. manufacturing process dimensional accuracy surface roughness 1.1...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390241
EISBN: 978-1-62708-459-8
... or rethreading at unreasonably short intervals. As in other processes, mixed-film lubrication is often encountered, but the high speeds, coupled with a favorable process geometry, make plastohydrodynamic lubrication possible and even desirable, at least for early draws in which a rougher surface can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480293
EISBN: 978-1-62708-318-8
.... It describes the basic machining requirements for titanium in terms of tool geometry and materials, machine setup rigidity, cutting speeds and feed rates, and surface conditions, and explains how the requirements are met in practice in milling, turning, drilling, surface grinding, and broaching operations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900153
EISBN: 978-1-62708-350-8
... Abstract The nitriding process can be applied to various materials and part geometries. This chapter focuses on tool steels, pure irons, low-alloy steels, and maraging steels. Various considerations such as the surface metallurgy requirements of the die, including case depth, compound layer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... Abstract This chapter is largely a compendium of best practices and procedures for minimizing the effects of fatigue. It explains how to make products more resistant to fatigue by choosing the right materials and manufacturing processes, avoiding geometries and features that concentrate strains...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860035
EISBN: 978-1-62708-338-6
... Clairault. Clairault’s relation ( Ref 4.1 ) is a formula in classical differential geometry. The relation is valid for any point on a geodesic path on an arbitrary surface of revolution and gives: (Eq 4.1) r ⋅ sin ( α ) = Constant where r is the radial distance of any point...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260087
EISBN: 978-1-62708-336-2
... bearings is dependent on many factors, including temperature rise in the die, extrusion speed, shape and geometry of die, die bearing length and surface condition, and materials properties of the die steel and the extruding alloy. Because the temperature rise in the die bearing has a direct effect...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870179
EISBN: 978-1-62708-344-7
... concentration factors and how they are determined for the general case and for specific geometries, materials, and surface conditions. The chapter covers both elastic and plastic fatigue behaviors as well as a wide range of methods. It also explains how small nuances in loading can introduce tensile...
Image
Published: 01 August 2005
Fig. 7.29 Cleavage fracture in soda lime glass. Crack progresses from left to right. (a) Fracture surface shows the initiation region (featureless mirror region), surrounded by the mist and hackle marks. (b) Geometry of a tensile test bar showing position of fracture surface normal to tensile More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780177
EISBN: 978-1-62708-281-5
... or worse, depending on the wavelength of light used. Macroscopic Surface Irregularities Macroscopic surface irregularities are tested in several ways, depending on geometry and intended surface use. Curved surfaces of optical quality are tested using test glasses and interferometers, which are based...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400001
EISBN: 978-1-62708-316-4
... such as drawing, bending, and coining. manufacturing sheet metal forming IN A MANUFACTURING process, a given material is transformed into a useful part having a complex geometry with well-defined (a) shape, (b) size, (c) accuracy and tolerances, (d) appearance, and (e) properties ( Ref 1.1...
Image
Published: 01 October 2011
Fig. 16 Schematic representation of the contact geometry between a real blunt indenter and a real rough surface (a) for the macro range, and (b) for the nano range. The scales and the mean roughnesses, Ra , between the macro and the nano range are in the ratio 20:1, whereas the lateral curve More
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360107
EISBN: 978-1-62708-435-2
... Abstract This chapter analyzes four gearbox failures, in each case identifying the underlying failure mechanism and recommending changes to reduce vibration. These include failure of an offset parallel gearbox due to gear tooth geometry error; high vibration on high-speed offset parallel...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030039
EISBN: 978-1-62708-282-2
... to accelerated attack of the metal surface, as shown in Fig. 2 . There are numerous practical cases of geometries that lead to crevice corrosion. In almost any engineered structure there are many instances in which two or more materials are, by design, in close proximity as described previously. If electrolyte...
Image
Published: 01 October 2011
Fig. 35 Representation of the indentation and sphere geometry for calculation of the indentation surface More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
... equipment, (6) product, (7) plant environment Tooling/Dies Tool geometry Surface conditions, lubrication Material/heat treatment/hardness Temperature Conditions at the Die/Billet Interface Lubricant type and temperature Insulation and cooling characteristics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
..., it would have been even more difficult to determine the basic ductile or brittle behavior of the material without knowledge of the loading geometries and expected fragment shape. Stress versus Strength Almost all real loading geometries cause the stress to be highest somewhere along the part surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400005
EISBN: 978-1-62708-316-4
...-dimensional geometry, usually without any intended significant change in sheet thickness and surface characteristics. Sheet metal forming operations are usually performed as cold working processes, which means that they are performed at a temperature that is below the recrystallization temperature...