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proof testing

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Published: 01 November 2012
Fig. 26 Brittle fracture of solid rocket motor case during proof test. (a) Catastrophic brittle fracture of a 660 cm (260 in.) diameter solid propellant rocket motor case made of 18% Ni, grade 250, maraging steel. The case fractured at a repaired weld imperfection during a hydrostatic pressure More
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Published: 01 November 2012
Fig. 5 Destructive inspection with proof test. (a) Crack growth. (b) Detection of cracks equal to or greater than proof size. (c) Lower proof load with cooling. RT, room temperature. Source: Ref 1 More
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Published: 01 June 1983
Figure 8.20 The proof test concept. More
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...
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Published: 01 January 2017
Fig. 7.13 Effect of zinc content on time to failure for specimens tested at 10% proof stress (or 10% offset yield stress) in tarnishing and nontarnishing ~15 N ammoniacal solutions containing 8 g/L Cu. DNF, did not fail. Source: Ref 7.45 More
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Published: 01 December 2001
Fig. 5 Effect of zinc content on time to failure for specimens tested at 10% proof stress in tarnishing and nontarnishing ~15 N ammoniacal solutions containing 8 g/L Cu. DNF, did not fail. Source: Ref 2 More
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Published: 01 October 2012
Fig. 10.11 Statistical aspects of material design. (a) Weibull plot for reaction-bonded silicon nitride. (b) Improved Weibull distributions. (c) Modification of normal distribution by proof testing. Source: Ref 10.9 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090341
EISBN: 978-1-62708-266-2
... dynamic 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... of assembly damage and operating overload, the importance of surface cleanliness and finish, and the role of inspection, testing, replacement, and repair in safe-life and fail-safe designs. Examples highlighting the benefits and potential pitfalls of proof loading tests are included as well. References...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... for Specifying Optimal Proof Load Levels , Advances in Fatigue Lifetime Predictive Techniques: Second Volume , STP 1211, Mitchell M.R. and Landgraf R.W. , Ed., American Society for Testing and Materials , 1993 , p 186 – 202 10.1520/STP15086S 10.6 Halford G.R. and Nachtigall A.J...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060195
EISBN: 978-1-62708-355-3
... standard, namely, product hardness; proof load by length measurement, yield strength, or uniform hardness; axial tension testing of full-sized products; wedge tension testing of full-sized products; tension testing of machined test specimens; and total extension at fracture testing. Finally, the chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270080
EISBN: 978-1-62708-301-0
.... 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 proof loading. Fig. CH8.5 (a) 1. Original tie-rod that failed in the trial run. 2. Modified tie-rod...
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...
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
... be incorporated to ensure 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...
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Published: 01 December 2008
Fig. 2 Stress corrosion cracking (SCC) resistance in neutral chloride solutions containing 8 ppm oxygen. Testing time, 1000 h. Applied stress equal to proof strength at testing temperature More
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.t53720411
EISBN: 978-1-62708-305-8
... of nondestructive inspection of weldments including visual inspection, liquid penetrant inspection, magnetic particle inspection, radiographic inspection, ultrasonic inspection, leak testing, and eddy current and electric current perturbation inspection. The chapter also describes the properties of brazing filler...
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Published: 01 December 2006
Fig. 7.107 Comparison of the 0.2% hot proof stress of the hot working tool steel 1.2343 measured in hot tensile tests between 500 and 600 °C, with the 0.2% 100 h creep stress in the same temperature region [ Güm 81 ] More
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Published: 01 December 2001
Fig. 4 Plot of stress level vs. time to failure to compare behavior of low-cobalt-bearing, standard, and cobalt-free 18Ni-250 maraging steels, tested in stagnant 3.5% NaCl solution for 1000 h using proof-ring tensile specimens More