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proof testing

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860115
EISBN: 978-1-62708-338-6
... of the advantages of composites over metals for RMCs. A discussion on a typical design, analysis, and manufacturing operation follows. The chapter introduces the basic design approach and shows some sizing techniques along with example calculations. It discusses the processes involved in the testing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... evaluation methods to flaw detection in P/M parts. The nondestructive evaluation methods covered are mechanical proof testing, metallography, liquid penetrant crack detection, filtered particle crack detection, magnetic particle crack inspection, direct current resistivity testing, x-ray radiography...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610303
EISBN: 978-1-62708-303-4
.... The chapter describes some of methods used to determine maximum permissible crack size and predict growth rates. It explains how the information can then be used to control fractures through periodic inspection, fail-safe features, mandated retirement, and proof testing. It presents a number of fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.t56010001
EISBN: 978-1-62708-384-3
... Abstract Product design requires an understanding of the mechanical properties of materials, much of which is based on tensile testing. This chapter describes how tensile tests are conducted and how to extract useful information from measurement data. It begins with a review of the different...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
... Abstract This chapters discusses the basic steps in the failure analysis process. It covers examination procedures, selection and preservation of fracture surfaces, macro and microfractography, metallographic analysis, mechanical testing, chemical analysis, and simulated service testing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090341
EISBN: 978-1-62708-266-2
... fatigue data. The points represent median times to failure of groups of 10 specimens under static stresses. After Ref 14.16 Proof testing ( Ref 14.18 ), in which parts are overstressed in order to eliminate those with very low strength, can also be used to ensure that no in-service failures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... propagate when the structure is proof tested or otherwise tested for structural integrity. Therefore, it is preferred that leak testing be done after completion of the structural tests. Selection of a leak testing method depends on the environment in which the structure is used and the potential danger...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550511
EISBN: 978-1-62708-307-2
... the highest possible component reliability. Then, if possible, each component should be proof tested to the full design stress condition to force the reliability to 1 (naturally, this assumes that tests have been performed to verify that the proof test does not damage the component). For cases in which...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290193
EISBN: 978-1-62708-319-5
... − exp − V V O σ − σ U σ O M where V is the sample volume, and σ U is the proof stress that must be exceeded for failure (if the samples are not subjected to proof testing, it is set to 0), and V O is the sample volume used for measuring the Weibull...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270080
EISBN: 978-1-62708-301-0
...-rod is put into service. A modified weld design was suggested for the fork end of the tie-rod ( Fig. CH8.5 ). After this modification, the tie-rod was proof loaded as per requirements, and a dye-penetrant test was carried out. The tie-rod withstood the proof loading and there was no cracking after...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... by multiple transducers of acoustic signals emitted by growing cracks Incidence and location of growing cracks (particularly in pressure vessels undergoing proof testing) May be applied to large structures/ plant, intermittently or continuously. Limited equipment required. Suitable for on-site use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110563
EISBN: 978-1-62708-247-1
... them. The chapter also provides information on the testing of MEMS devices. It covers the two common challenges in sample preparation for MEMS: decapping, or opening up the package, without disturbing the MEMS elements; and removing MEMS elements for analysis. Finally, the chapter discusses the aspects...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310257
EISBN: 978-1-62708-286-0
... pitting can occur, SCC will also be avoided even if stress excursions occur since in general pitting is a necessary precondition for SCC. Fig. 2 Stress corrosion cracking (SCC) resistance in neutral chloride solutions containing 8 ppm oxygen. Testing time, 1000 h. Applied stress equal to proof...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
..., it is concluded that the failure of the NLG piston axle was due to the pre-existing crack on the axle. This crack was created prior to or during heat treatment of the part. A new multiple-leg aircraft-handling sling that had just received proof testing was found to have a cracked clevis. The failed adapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.9781627082617
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180029
EISBN: 978-1-62708-256-3
... service or operation, improper maintenance, improper testing, assembly errors, fabrication or manufacturing errors, and design errors. The case of the Tacoma Narrows Bridge collapse is presented to illustrate the consequence of overlooked factors, in this case, wind dynamics, and the importance...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780359
EISBN: 978-1-62708-281-5
... or variations in test specimen configuration. Instead, mechanical testing is most useful in comparing a known good or control sample with a failed part. Many times, this is best accomplished through some sort of proof load testing. Proof load testing involves measuring the strength and dimensional changes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
... to transgranular occurred at approximately 15% Zn for the nontarnishing solutions. This transition has been attributed to a change in the dislocation structure as solute addition increases. Fig. 7.13 Effect of zinc content on time to failure for specimens tested at 10% proof stress (or 10% offset yield...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270045
EISBN: 978-1-62708-301-0
... microanalytical techniques and spot tests are available for detecting and identifying these residues even in traces. Microchemical analysis is complementary to metallurgical examination. The chemical tests should also include tests for other materials such as Wood’s, metal used as an absorbent in dynamite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130285
EISBN: 978-1-62708-284-6
... that the embrittlement phenomenon of tempered martensite is just sensitive to determinate test conditions. The room-temperature tensile test, using unnotched proof tests, does not present changes in terms of reduction of section and tension rupture in the embrittlement temperature range. It is possible to make...