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impact parameters

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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
... of the total impact energy expended in interfacial slip, and the term (α k /μ) is replaced by a parameter K , then if I is the energy of impact and n the number of impacts, wear volume can be defined as: (Eq 6) W = K I n H where K is now the nondimensional impact wear...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006650
EISBN: 978-1-62708-213-6
... descriptions and line narrowing and spectral resolution and describing the impact of magnetic field on nuclear spins and the factors determining resonance frequency. This is followed by a description of various systems and equipment necessary for NMR spectroscopy. A discussion on general sampling for solid...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005967
EISBN: 978-1-62708-166-5
... Abstract Of the various thermal processing methods for steel, heat treating has the greatest overall impact on control of residual stress and on dimensional control. This article provides an overview of the effects of material- and process-related parameters on the various types of failures...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... an explanation on mechanisms, forms (sliding, impact, and rolling) and the causes of wear. It describes the wear measuring methods, including the mass loss method, wear width method, and scar depth method. The units used to report wear vary with type of wear and with the purpose for which the data...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005417
EISBN: 978-1-62708-196-2
... determination methods to five tests performed on an experimental rolling mill: Al 5052-H19, emulsion lubrication, SAE 52100 roll steel grade, speed 1 m/s, and variable reduction. Source: Ref 50 The impact of the assumed mechanical properties on the computed friction coefficient must also be taken into...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003187
EISBN: 978-1-62708-199-3
... (≥1000 °C, or 1800 °F). The stresses on the tool tip are also high; the actual values are dependent on the workpiece material and the machining conditions. In addition, the tool may experience repeated impact loads during interrupted cuts, and the freshly produced chips may chemically interact with the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003012
EISBN: 978-1-62708-200-6
... these two parameters. These additives improve flexibility, increase elongation to failure, lower the elastic modulus, and increase the impact resistance. However, these benefits can be offset by less desirable effects, such as reduced tensile strength, increased flammability, lowered heat distortion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... size Drop weight impact Toughness Must fit in the test fixture Requires large surface area Other mechanical testing Component testing Functionality Nonstandardized test requires effort to determine test parameters and attach points Mechanical testing is usually used to verify...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... important role in erosion wear. Two additional key parameters are the impact angle and the particle velocity. Equations 1 and 3 can be modified to express the wear volume, V , due to solid-particle erosion ( Ref 3 , 5 ): (Eq 7) V = Φ SPE · m ⋅ v 2 2 · H where m is the...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005198
EISBN: 978-1-62708-187-0
... not exceed the maximum temperature limit for the crucible; otherwise, the crucible will fail. Tolerance of thermal shock: If the application results in rapid heating or cooling of the crucible, a crucible type must be selected that resists thermal shock. Impact resistance and mechanical...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005293
EISBN: 978-1-62708-187-0
... internal porosity, the degree of improvement varies, depending on the property being considered. Figure 6 displays the relationship between ultimate tensile strength, tensile ductility measured as percent elongation, and impact resistance as a function of pore fraction in sintered iron powder compacts...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... were filed, particularly in recent years, significant impediments remain to broader application that can use the design freedom it offers and enable use in critical and high-load parts. The economics of AM is application specific and still being studied, but AM can have significant impact on costs...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... some situations can be complicated by the combined application of an oscillating normal load. This leads to a hammering effect, which is termed impact fatigue. In this case, the phase relationship between the two motions can be an important factor. Other terms that have been used to designate...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003985
EISBN: 978-1-62708-185-6
... temperature for a longer time during die contact. This has the added advantage of reducing the forging speed, thus lessening the impact of strain rate on flow stress. Typical strain rates used for isothermal forgings are 0.5 mm/mm/min or lower, while hot dies use strain rates in the range of 3 to 10 mm/mm/min...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... velocity, 25 m/s; sand content, 1000 ppm; test duration, 30 min; impact angle, 45° (test 1) and 90° (test 2); pH, 7 (test 1) and 5.5 (test 2). Source: Ref 16 Ceramics, glasses, and glass-ceramics have been essential for a long time in the medical industry for eyeglasses, diagnostic instruments...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005934
EISBN: 978-1-62708-166-5
... product and process specifications. As was shown in Eq 4 , the Q -factor is a single value that is reflective of all parameters throughout the cooling process that will impact as-quenched hardness. These values may be determined in a well-controlled laboratory setting or within an actual load of parts...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005243
EISBN: 978-1-62708-187-0
... a number of variables that will have a great impact on the final dimensions of a cast part. Some of these variables are common to other casting processes, but many are unique to the molding method. Metal contraction, mold influences, and metal variables are described as follows. Most alloys...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006035
EISBN: 978-1-62708-172-6
...) after 1000 cycles. The ability of a coating to resist mechanical damage during both the operating phase and a LOCA event will depend on its impact resistance. Coated floors, piping, and supports could potentially be damaged, leading to detached coating. Reference 15 is the specified test method...
Book Chapter

By H.W. Sizek
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003984
EISBN: 978-1-62708-185-6
... important tasks: adjusts the forging dimensions by changing the height of the cushion, protects the system by cushioning impact loads, provides a more reliable overload protection, and allows measurement of the forging force with greater precision. The hydraulic cushion also requires a much smaller...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001260
EISBN: 978-1-62708-170-2
... throughput, low cost, and simple equipment—with an extra degree of freedom to engineer surface film properties. The potential impact of multiple-layer plating on the performance and economics of engineered surface layers appears to be large, although most commercial applications of the technology are still...