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cyclic loading machinery

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... continued cyclic loading, and that can then lead to fracture of the part or structure. Once initiated, the fatigue fracture can propagate by high stresses and low cycles or by low stresses and high cycles. The final rupture may have characteristics of brittle and/or ductile fracture modes, depending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270053
EISBN: 978-1-62708-301-0
... that followed, the crane company claimed that the cable was defective because the load of the concrete was well below the maximum load limit of the cable. The cable manufacturer claimed that the crane operation allowed the cable to flex at the area of failure and, in effect, created a cyclic stress...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... Constructing a constant-life diagram from a set of S - N curves containing three R ratios, where R = −1 is the fully reversed cyclic loading condition and R = + 1 is the monotonic ultimate strength of the material (no cyclic load). (a) Typical S - N curves. (b) Typical constant-life diagram. Source...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... either during fabrication (e.g., welding, riveting, or forming) or during operation (due to fatigue, corrosion, etc.). The flaw propagates in a stable mode under repeated cyclic loads, corrosive environments, or both. The initial crack growth rate is so slow that the flaw remains undetectable by all...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140039
EISBN: 978-1-62708-264-8
..., by producing residual compressive stresses on the surface, it is possible to reduce the crack growth during cyclic loading. As shown in Fig. 5.14 , the local residual compressive stress at the surface will cause the tensile stress on the rotating axle to decrease, because the cyclic stress produced...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490111
EISBN: 978-1-62708-340-9
... fatigue low-cycle fatigue rupture ductility superalloys thermal fatigue A metal subjected to repetitive or fluctuating stress will fail at a stress much lower than that required for failure on a single application of load. Failures occurring under cyclic loading are termed fatigue failures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540215
EISBN: 978-1-62708-309-6
... tolerance design/analysis procedure consists of the following steps: Establish design criteria suitable to the expected use of the vehicle, machinery, etc. Identify structural elements and the expected loading conditions. Develop a systematic means of identifying the criticality...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270005
EISBN: 978-1-62708-301-0
..., failure analysis helps considerably in improving the reliability and safety of machinery and structural hardware that form the heart of modern industries. In the last few decades, systematic failure investigations carried out on several failed components have generated a fund of useful information...
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
.... Both rolling and sliding types of bearings, gears, and parts, such as pumps, impellers, and propellers, are subject to this type of damage. As discussed in this chapter, fatigue is the mechanism that results from cyclic slip under repetitive load applications for many thousands or millions of load...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
... Contacts , 1982, p 19 Sphere-on-reciprocating flat, 0.49 N (0.050 kgf) load, 1.0 mm/s (0.039 in./s) velocity 3. M.J. Manjoine, Bearing and Seal Design in Nuclear Power Machinery , American Society of Mechanical Engineers, 1967 Flat plate-on-flat plate, 28 MPa (4.1 ksi) contact pressure, 0.25 mm/s...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... specimen is required, as in microhardness testing. Portable hardness testers are useful for field examination. But the type of hardness test must be appropriate for the sample. For example, Brinell is preferred over Rockwell for a gray cast iron part. One must ensure the proper load is used for the test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550001
EISBN: 978-1-62708-307-2
... and carbon/epoxy. Source: Ref 1.9 The response of damaged composites to cyclic loading is also significantly different from that of metals. In contrast to the poor composite static strength when it has damage or defects, the ability of composites to withstand cyclic loading is far superior...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
... part, and the manner in which it interacts with other parts, include: Loading. Were the nature, rate, and magnitude of the applied load correctly anticipated in the design of the part? Were repeated or cyclic loadings involved? What was the direction of the principal stress relative...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... Abstract The machinery and equipment required for rod and tube extrusion is determined by the specific extrusion process. This chapter provides a detailed description of the design requirements and principles of machinery and equipment for direct and indirect hot extrusion. It then covers...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630169
EISBN: 978-1-62708-270-9
.... In some cases, some roughness or waviness may be desirable so that the depressions can act as reservoirs to retain lubricant. A word of caution: there is also a level where creating too smooth of a surface will cause severe adhesive wear, depending on surface loading conditions. Contaminate surfaces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
...: The alloy is made as oxidation resistant as possible, consistent with mechanical-property goals. A suitable protective coating is placed on exposed surfaces. The result of this two-pronged approach is that the structural alloy that is coated is left intact as the major load-carrying facet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820001
EISBN: 978-1-62708-339-3
... ). There are a number of other common weld deposit/base metal combinations that are known to form galvanic couples. It is common practice to use austenitic stainless steel welding consumables for field repair of heavy machinery, particularly those fabricated from high-strength low-alloy steel. This practice leaves...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910099
EISBN: 978-1-62708-250-1
...-chromium alloys High-temperature oxidizing atmospheres Chromium, which forms a protective film Nickel-molybdenum alloys Oxygen at high temperature Molybdenum The term hydrogen damage has been used to designate a number of processes in metals by which the load...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290243
EISBN: 978-1-62708-306-5
... joining methods in many applications. Many adhesives make superior stress-bearing components. Whether bonding metal to metal, plastic, glass, rubber, ceramic, or another substrate material, adhesives distribute stress load evenly over a broad area, reducing stress on the joint. Since they are applied...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720267
EISBN: 978-1-62708-305-8
..., surface area, and shape; and type of backing material and degree of loading. Four basic types of search units are straight beam contact, angle beam contact, dual element contact, and immersion, both flat and focused. Their primary areas of application are listed in Table 2 . Sectional views...