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test specimens

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses composite testing procedures, including tension, compression, shear, flexure, and fracture toughness testing as well as adhesive shear, peel, and honeycomb flatwise tension testing. It also discusses specimen preparation, environmental conditioning, and data...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... of specimens, mechanical testing, macroexamination, microexamination, metallographic examination, determination of the fracture mechanism, chemical analysis, exemplar testing, and analysis and writing the report. The chapter ends with a discussion on various processes involved in the determination of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
... restricted to inspecting areas of interest or systematically chosen test locations based on sampling convenience. In failure analysis, specimens are usually removed to study the origin of the failure, to examine highly stressed areas, and to examine secondary cracks. All sectioning processes produce...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720117
EISBN: 978-1-62708-305-8
... generally apply to tension or compression testing machines as well. Although there are many types of test systems in current use, the most common are universal testing machines, which are designed to test specimens in tension, compression, or bending. The testing machines are designed to apply a force...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720085
EISBN: 978-1-62708-305-8
... precision, over a very wide test load range, as long as the test specimen is reasonably homogeneous. However, studies of microindentation hardness test results conducted over the past several years on a wide range of loads have shown that results are not constant at very low loads. This problem, called the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... pyramid indenter frequently encounters hidden pores. Microhardness testing and measurement of case depth are covered by Metal Powder Industries Federation standard MPIF 37. Metal Powder Industries Federation standard 10 describes specimens for tensile testing. Specimens include flat unmachined test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720233
EISBN: 978-1-62708-305-8
... is a nondestructive inspection method that is based on differential absorption of penetrating radiation−either electromagnetic radiation of very short wavelength or particulate radiation−by the part or test piece (object) being inspected. Because of differences in density and variations in thickness...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110461
EISBN: 978-1-62708-247-1
... based on focused ion beam milling used for TEM sample preparation. It describes the principles behind commonly used imaging modes in semiconductor failure analysis and how these operation modes can be utilized to selectively maximize signal from specific beam-specimen interactions to generate useful...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... directly on the supplied material. For wrought materials, the test specimens are taken from the same heat or lot of material that is supplied. In the case of castings, separate test bars are cast at the same time as the part casting and from the same material used to pour the part casting. Although the...
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
... sample to the rise with no sample present, the amount of energy absorbed by the specimen on breakage can be calculated. This energy, usually given in units of joules, J, or footpounds force, ft-lbf, is called the Charpy impact energy, or CVN energy. (Note: The Izod impact test is similar to the Charpy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... were tested, and that they were reduced 17% when specimens having quality of ASTM E155 level 8 were tested. Static properties are mostly unaffected by microporosity. Microporosity is found between dendrites, and like macroporosity, is caused by the inability of feed metal to reach the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440027
EISBN: 978-1-62708-262-4
... ferrous and nonferrous metallurgy, hardness is defined and measured on the basis of: a static test in which a standard penetrator is pressed into the specimen, using a standard load, and the resistance of the metal to penetration is the measure of the hardness; and a dynamic test in which a small hammer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
..., inboard flap hinge bolt, nose landing gear piston axle, multiple-leg aircraft-handling sling, aircraft hoist sling, internal spur gear, and MLG axle. In addition, the chapter provides information on full-scale fatigue testing, nondestructive testing, and failure analysis of fin attach bolts. high...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780093
EISBN: 978-1-62708-268-6
... material is cut to a standard tensile-testing configuration and subjected to an increasing tensile load. As the load increases, the technician records elongation data. The loads are converted to stress (by dividing the load by the cross-sectional area of the standard tensile test specimen), and the...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310079
EISBN: 978-1-62708-326-3
... requirements, the test bars for the end-quench test are normally 25 mm (1 in.) in diameter by 100 mm (4 in.) long with a collar on one end to hold it in a quenching jig ( Fig. 3a ). The test involves heating the test specimen to the proper austenitizing temperature and then transferring it to the quenching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
... explains how the delta phase, which is used to control grain size in IN-718, improves strength and prevents stress-rupture embrittlement. It describes heat treatments for different product forms, discusses the effect of tramp elements on grain-boundary ductility, and explains how section size and test...
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
... nondestructive test method for determining the strength of a bonded joint. Therefore, process control test specimens must be fabricated and destructively tested using the same surface preparation, adhesive, and bond cycle as the actual structure. Adhesive materials are perishable. They must be stored...
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 oxidation process proceeded. In some instances, when hot corrosion testing was required, specimens were placed in a crucible with appropriate contaminants and exposed to high temperatures. This is not a satisfactory method for determination of the real-world behavior of a superalloy undergoing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870063
EISBN: 978-1-62708-314-0
... testing must be performed on the starting materials rather than on just the finished product. The quality of a composite part can be assured by either postfabrication testing of “tagalong” or “process control” test specimens fabricated with the production hardware, using the same materials, or by being...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110563
EISBN: 978-1-62708-247-1
... failure occurs. One study used Raman spectroscopy to measure directly the strain in the silicon and corroborated it with finite element calculations to predict the location of fracture [24] . Figure 17 shows a test specimen used to characterize the fatigue life of polysilicon. The notch...