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machine stiffness

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Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... resistance values, although such materials would have lower stiffness. Figure 1 shows the variation of notched impact with flexural modulus for a typical range of acrylonitrile-butadiene-styrene (ABS) resins. Some stiffness can be recovered by adding fibrous reinforcement, but the reinforcement can also...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001851
EISBN: 978-1-62708-241-9
... bearings machine fault misalignment structural materials vibration wear vibration analysis stiffness damping coefficient inertia steel (steel, general) Introduction A spinning system serves as a model for many rotating machinery elements. It is generally composed of a flexible shaft...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001151
EISBN: 978-1-62708-219-8
.... However, any reduction in stiffness in construction or service would allow a greater depth of water ponding on the roof during a heavy rain storm, with the increased loading giving further roof deflection and additional ponding. Thus, a load sufficient to collapse the entire structure may be reached under...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... techniques are used to produce polymer fibers. Such fibers have substantially greater stiffness and strength along their length than do the unoriented polymers from which they are manufactured. This is because special processing has been used to orient the covalent bonds of an appropriate long-chain polymer...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
.... The 5 Hz (300 cpm) frequency is easily perceived by the human body, particularly at night when other motion and noise are at a minimum. It also can excite low stiffness tructures such as lampshades and rocking chairs. The factory installed balancing devices to reduce the amount of force entering...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... for compound-impact testing of titanium alloy RMI 5522S specimens against 17-4 PH stainless steel counterfaces (impact stress: 18.6 MPa, or ksi). Source: Ref 23 Specimen Stiffness Specimen stiffness affects the wear rate of both impacting bodies ( Ref 24 ). As shown in Fig. 14 , the short, stiff...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006814
EISBN: 978-1-62708-329-4
... failure), and when that machine or structure with an unrepaired crack is placed into service, the preexisting crack will likely have an important and negative effect on the performance of the welded connection when service loads are applied. This article discusses the interaction of manufacturing-related...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... as materials for rolling-contact bearing components show some practical advantages over traditional bearing steels. The properties of ceramics, specifically low density and high stiffness, are of most interest to gas turbine ( Ref 1 ) and machine tool manufacturers ( Ref 2 ). High hardness, low coefficient...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... stainless steel counterfaces (impact stress 18.6 MPa). Source: Ref 20 Specimen stiffness affects the wear rate of both impacting bodies ( Ref 21 ). As shown in Fig. 12 , the short, stiff specimen wore the counterface and yet hardly wore at all itself. In contrast, the longer, less stiff specimen...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001703
EISBN: 978-1-62708-227-3
... the chemical composition of the broken spindle, and its associated components.The stud, spacers, and washers were made from alloy AISI 430F (UNS S43020) free-machining stainless steel. Alloy 430F is a non heat-treatable ferritic stainless steel sulphurized to increase machinability. Except in thin sections...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001646
EISBN: 978-1-62708-219-8
... by cold drawing high-carbon wire rod in multi-pass drawing machines. In addition to high tensile strength, roping wires must also possess good surface characteristics and adequate torsion and bend properties to withstand the rigors of rope manufacture and service exposure. The overall strength of a wire...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006938
EISBN: 978-1-62708-395-9
... machining techniques such as CNC) may include sharp features such as burrs which can have damaging effects on interacting softer materials such as polymeric films and rubber gaskets. Additionally, the viscoelastic nature of the components can become important to these interactions, potentially altering...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006928
EISBN: 978-1-62708-395-9
... of thin plastic sheeting D1043 458-1 Stiffness properties of plastics as a function of temperature by means of a torsion test D1044 9352 Resistance of transparent plastics to surface abrasion D1708 6239 Tensile properties of plastics by use of microtensile specimens D1822 8256 Tensile...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006919
EISBN: 978-1-62708-395-9
... for the previously simulated elastomer-filled PP as well as talc and glass-fiber-filled constitutions. These common additives for automotive applications significantly change the impact response of ductile plastics. While the increased stiffness of the material initially leads to greater absorbed energies...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001056
EISBN: 978-1-62708-214-3
..., for a total thermal cycle of 47 s. By keeping the stroke constant, stiff restraints were imposed on the specimen by means of a servohydraulic universal testing machine. The stress resulting from this restraint was increased by an additional monotonic tensile stress. The applied net stress at 100 °C (212 °F...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... variables, such as component size and shape, material fatigue properties, the presence of mean stresses including residual stresses, surface conditions, local stress concentrations due to notches and stiffness changes, as well as material and manufacturing imperfections or discontinuities. The problem...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001596
EISBN: 978-1-62708-225-9
... for decarburization was detected through microhardness measurements. Stress Analysis Table 3 summarizes the characteristics of the helical compressor springs. The spring rate or axial stiffness is calculated from: (Eq 1) k = G d 4 8 N a D m 3  in N / mm where D m is the mean...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006912
EISBN: 978-1-62708-395-9
... factors to evaluate carefully. Temperature not only affects physical properties such as impact strength, tensile strength, stiffness, and fatigue, but it also affects chemical resistance and all long-term properties. Therefore, it is highly recommended to test the candidate material at the maximum...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
.... For machinability, annular and profile dies typically consist of multiple components ( Fig. 8 ). There is a streamlined plate that transitions the flow at the die exit into the rough outer final shape. Contained within the streamlined plate is a torpedo on the upstream side of the mandrel. The torpedo smoothly...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001388
EISBN: 978-1-62708-215-0
... shows the stress of the bolts measured when the pile located at the rear of the crane was drawn out from the ground. Stress measurements were conducted both with and without use of a vibrohammer, a machine used to vibrate the pile. It was difficult to measure the stresses on all the bolts, because...