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case crushing

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Published: 01 January 2002
Fig. 35 Case crushing at midprofile of a spiral bevel gear tooth. Progression is from the subcase area into the core and outward to the surface. More
Image
Published: 01 January 1996
Fig. 7 Micrographs showing etched cross-sections of (a) a carburized cylindrical test specimen (1.9×) and (b) a carburized gear tooth in which subcase fatigue cracks initiated and propagated during testing. Subcase fatigue, called case crushing by Pederson and Rice, shows the early stages More
Image
Published: 01 January 2002
Fig. 44 Subcase fatigue cracking. The micrographs show etched cross sections of (a) a carburized cylindrical test specimen (1.9×) and (b) a carburized gear tooth in which subcase fatigue cracks initiated and propagated during testing. Subcase fatigue, also known as case crushing, shows the early More
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005952
EISBN: 978-1-62708-168-9
... in e root fillet, particularly that of the pinion Case-crushing load at the lowest point of tooth contact in the pinion Interface temperature of the gear set at several anticipated speeds Level and rate of application of the overloads. (This factor can be determined with strain gages and high...
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
... or spalling), rolling contact, thermal fatigue Impact Tooth bending, tooth shear, tooth chipping, case crushing, torsional shear Wear Abrasive, adhesive Stress rupture Internal, external Fatigue Fatigue failure results from cracking under repeated stresses much lower than the ultimate...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009083
EISBN: 978-1-62708-177-1
... the differences in the constituents and resin intermingling. The article discusses the factors that govern the honeycomb core movement and honeycomb core crush, with illustrations. Some common tests performed on honeycomb composites to characterize the skin-to-core bond strength are the climbing drum peel...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002141
EISBN: 978-1-62708-188-7
... of supporting the workpiece, and the method of restoring the cutting contour of the grinding wheel (diamond dressing or truing, or crush truing). Thread grinding machines are sometimes classified as external, internal, or universal. The universal type is capable of grinding both external and internal threads...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003388
EISBN: 978-1-62708-195-5
... the bag-side facesheet changes direction, the core is subject to flatwise tension and/or compression. In the case of flatwise tension, the face-to-core adhesive must provide an adequate bond, and in the case of flatwise compression, the core must have adequate crushing strength. The shear force normal...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005951
EISBN: 978-1-62708-168-9
... compressive loads Resistance to scuffing or seizing Bending or torsional strength Bending fatigue strength Resistance contact fatigue, pitting, or case crushing Case-hardening processes and their characteristics Table 1 Case-hardening processes and their characteristics Process...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002401
EISBN: 978-1-62708-193-1
... Scabbing Shelling Fatigue wear Subcase Fatigue Case crushing Micropitting Microspalling Frosting Glazing Gray staining Surface distress Peeling Macropitting As previously noted, macropitting is a preferred general term that includes spalling ( Ref 22...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005982
EISBN: 978-1-62708-168-9
... applications, a martensitic core is desired. Low-carbon martensite has higher strength and fracture resistance or toughness than do ferrite-pearlite microstructures. This increased strength is necessary to prevent subsurface crack initiation, sometimes referred to as case crushing ( Ref 8 , 13 , 19...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003037
EISBN: 978-1-62708-200-6
... is used exclusively for energy absorption applications. Honeycomb Properties The basic mechanical properties used to quantify core are: bare compression strength, stabilized compression strength and modulus, L and W shear strengths and moduli, and crush strength. In general, bare compression...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006121
EISBN: 978-1-62708-175-7
... in the natural state. Beneficiation will typically start above 0.1% WO 3 for economic reasons, whereas the average WO 3 content is approximately 0.5%. The ore is first crushed and milled to separate the minerals. Because wolframite ore mainly occurs in vein-type deposits, it can typically be concentrated using...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003375
EISBN: 978-1-62708-195-5
... Compressive modulus, measured as stabilized with facings Crush strength, for energy absorption applications Shear strength and modulus in the L and W directions Figure 4 shows a typical load-deflection curve for honeycomb. Fig. 3 Honeycomb orientation: L (length or ribbon), W (width...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... of construction; or sometimes, the entire mechanism/component is no longer needed. In each of these cases, an opportunity exists whereby the part or component is modified in a significant manner, with attendant changes in its operating performance. The act of material removal or surface modification...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
... of construction; or sometimes, the entire mechanism/component is no longer needed. In each of these cases, an opportunity exists whereby the part or component is modified in a significant manner, with attendant changes in its operating performance. The act of material removal or surface modification...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005867
EISBN: 978-1-62708-167-2
... affects the ability to obtain a certain surface hardness and pattern, but it also must provide required strength below the hardened case. Insufficiently low core hardness can lead to case crushing. Carbon content also has a direct effect on the austenitization temperature (Ac 3 ) of a material...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... … … … High-density inclusions (chips, etc.) X X … … X Voids, foam joint … X X … … Disbond, shear ties X X … … … Lack of sealant at fasteners … X … … … Thick foam adhesive … X … … … Broken fasteners X X … … … Crushed core … … X … … Wrinkled core … … X...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003169
EISBN: 978-1-62708-199-3
... as environmental impact of the mining activity. This decision is also time sensitive, being strongly influenced by changing technological, economic, and social constraints. The ore minerals that are most simple to treat are those where the valuable metal occurs in its elemental or native form; in such cases...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002438
EISBN: 978-1-62708-194-8
... have been found for decreasing and cleaning, and for many years foams have been made with non-CFC foaming agents. There may be some difficulty with older appliances such as refrigerators with foams that were made with CFC foaming agents. In that case, the CFCs released in crushing the foam may...