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long-term tests

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Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003811
EISBN: 978-1-62708-183-2
... considered, by alloy casting users, in material selection. It presents compositions of cast steels tested in atmospheric corrosion in a tabular form. The rate of corrosion of a material in an environment can generally be estimated with confidence only from long-term tests. The article graphically presents...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... analysis and prevention, it is a general term used to imply that a component is unable to adequately perform its intended function. Thus, the intended function of a component and therefore the definition of failure may range greatly. For instance, discoloration of an architectural feature is a failure of...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... article. While the term thermomechanical fatigue is also broadly applied to define testing procedures, generic environmental exposure (both high- and low-temperature exposure), and other aspects of material evolution, this article limits the application of the term thermomechanical fatigue to the...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... characteristics can act singly or combine synergistically to reduce the strength, ductility, and toughness of metallic materials. These factors must also be considered in the evaluation and prevention of overload failures. Therefore, throughout this article, the term overload failure implies fracture due to...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006031
EISBN: 978-1-62708-172-6
... Abstract Polyvinylidene fluoride (PVDF)-based coatings are typically used in outdoor applications that require exceptionally high performance and excellent long-term exterior durability with little maintenance. This article provides a background of three fluoropolymers most commonly used for...
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
... metals where small amounts of material are available. In addition, characterizing the mechanical behavior of anisotropic materials often requires compression testing. For isotropic polycrystalline materials, compressive behavior is correctly assumed to be identical to tensile behavior in terms of...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... testing mechanical testing shear testing stress-strain curves tension testing torsion testing HARDNESS is a term that has different meanings to different people: it is resistance to penetration to a metallurgist, resistance to wear to a lubrication engineer, a measure of flow stress to a...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... further in terms of crack nucleation, crack growth rates, and threshold stress-intensity measurements. In order to determine the susceptibility of alloys to SCC, several types of testing are available. If the objective of testing is to predict the service behavior or to screen alloys for service in...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009007
EISBN: 978-1-62708-185-6
... torsion tests are usually reported in terms of the numbers of twists to failure or the surface fracture strain to failure. Figure 3 shows the relative hot workability of a number of steels and nickel-base superalloys, as indicated by the torsion test. The test identifies the optimal hot working...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003229
EISBN: 978-1-62708-199-3
.... Penetration occurs as a result of a pressure differential between the two regions, or of permeation of a somewhat extended barrier. The term “leak” commonly refers to an actual discontinuity or passage through which a fluid flows or permeates. Two basic types of leaks are real leaks and virtual leaks...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006063
EISBN: 978-1-62708-172-6
... various coating materials under the same conditions. This type of testing, it is thought, provides reproducible test conditions that allow for comparison of coating materials over long periods of time in the industry. A current product can be tested using the same parameters used to test a coating that...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009009
EISBN: 978-1-62708-185-6
... upset test The hot compression of thin ring specimens The hot plane-strain compression test, in which sheet or thin plates are indented with long narrow platens The compression test is the most general-purpose test for workability. Carrying out the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... testing machine is v = dL / dt , then the strain rate expressed in terms of conventional engineering strain is: (Eq 24) e ˙ = d e d t = d ( L − L 0 ) / L 0 d t = 1 L 0 d L d t = v L 0 The engineering strain rate is...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... 66–110 9.6–16 1–4 50 to >100 1 to >2 Source: Ref 2 The mechanical behavior of polymers is time dependent, or viscoelastic. Therefore, design data based on short-term tests have the possibility of misrepresenting that polymer in a design application that involves long-term...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
... cm 2 surface area at i corr = 10 −9 A/cm 2 , the concentration of nickel in a 100 mL flask would increase by only approximately 0.5 ppb per day. The exposure periods in leaching tests are often quite long, with sampling ranging from days to weeks, to determine both the early release rate and the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... to their quantity, that is, major, minor, and trace amounts ( Ref 4 , 6 ). A simple scheme for delineating these categories is: major > 1% > minor > 0.1% > trace. In terms of the chemical composition of ceramic and glaze materials, major and minor elements are usually expressed as a mass...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009010
EISBN: 978-1-62708-185-6
... parameters should be selected in order to produce high-quality products. Although commercial metalworking operations cannot be analyzed in terms of a simple stress state, workpiece failures are caused by localized tensile stresses in most instances ( Ref 1 , Ref 2 , Ref 3 , Ref 4 ). In rolling of plate...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003027
EISBN: 978-1-62708-200-6
... This same type of yellowness occurs when plastics are degraded, either during processing or from long-term exposure to heat or damaging radiation from ultraviolet or shorter wavelengths. Because it is so common, there is a standard test for yellowness, ASTM D 1925, which applies to transparent, nearly...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001296
EISBN: 978-1-62708-170-2
... on the long-time corrosion behavior of parts, accelerated (short-time) tests have been used for decades. The environment used might simulate a humid tropical area, the salty air of a seaside area, a salted road in winter, a highly industrialized area, or one of many others. Even these few examples...