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stress rupture failure

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430149
EISBN: 978-1-62708-253-2
... Abstract Boiler tubes operating at high temperatures under significant pressure are vulnerable to stress rupture failures. This chapter examines the cause, effect, and appearance of such failures. It discusses the conditions and mechanisms that either lead to or are associated with stress...
Image
Published: 01 November 2012
Fig. 18 Intergranular failure in nickel-base alloy. Inconel 751, stress rupture at 1350 °F, 55 ksi, 125 h. Source: Ref 8 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
... Abstract This chapter provides an outline of the failure modes and mechanisms associated with most boiler tube failures in coal-fired power plants. Primary categories include stress rupture failures, water-side corrosion, fire-side corrosion, fire-side erosion, fatigue, operation failures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540297
EISBN: 978-1-62708-309-6
..., fatigue life, and stress rupture failures. ceramics engineering plastics fatigue crack propagation fracture toughness glasses mechanical behavior IN PREVIOUS CHAPTERS, discussion has focused on metals—their mechanical behavior and the analytical methods applicable to them. The structural...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
.... The principal types of elevated-temperature failure mechanisms discussed in this chapter are creep, stress rupture, overheating failure, elevated-temperature fatigue, thermal fatigue, metallurgical instabilities, and environmentally induced failure. The causes, features, and effects of these failures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240265
EISBN: 978-1-62708-251-8
...-rupture test, the specimen is normally loaded at higher stresses than for the creep test and is complete upon failure of the specimen. In the creep test, the total strain is often less than 0.5%, while in the stress-rupture test, the strain can approach 50%. An advantage of the stress-rupture test is time...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
..., the specimen is normally loaded at higher stresses than in the creep test, and the test is taken to failure. In the creep test, the total strain is often less than 0.5%, while in the stress-rupture test the strain can approach 50%. An advantage of the stress-rupture test is time; a stress-rupture test can...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060021
EISBN: 978-1-62708-343-0
... failure, or more precisely, the time required for such a failure to occur at a given stress and temperature. It begins with a review of creep-rupture phenomena and the various ways creep-rupture data are presented and analyzed. It then examines a large collection of creep-rupture data corresponding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... they reveal about the load-carrying characteristics of engineering materials. It then discusses the use of failure criteria and the determination of yielding and fracture limits. It goes on to describe the mechanisms and appearances of brittle and ductile fractures and stress rupture, providing detailed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430409
EISBN: 978-1-62708-253-2
... of contact with the water used for steam generation. High-pressure parts such as superheater and reheater tubes are prone to creep damage because of acting or residual stresses at elevated temperatures. The starting and stopping of the boiler results in cyclic stresses and failure due to fatigue. All...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270067
EISBN: 978-1-62708-301-0
... measurements. fatigue fracture fractography microstructural analysis turbine blades Summary A low-pressure turbine rotor blade failed in service, causing extensive damage to the engine. The blade failed by stress rupture followed by fatigue due to high operating temperature. Background...
Image
Published: 01 August 2005
Fig. 4.39 Rupture time as a function of applied stress at room temperature for 0.15 mm (6 mils) thick joints made with silver-base filler metal between type 304 stainless steel components. Failure occurs through the thickness of the joint. The triaxial stress regime results in failure More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... Abstract Boiler tubes subjected to cyclic or fluctuating loads over extended periods of time are prone to fatigue failure. Fatigue can occur at relatively low stresses and is implicated in almost 80% of the tube failures in firetube boilers. This chapter covers the most common forms of boiler...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... in the spheroidized condition. As another example, in the case of a bolt failure it is desirable to examine the nuts and other associated parts that may have contributed to the failures. Also, in failures involving corrosion, stress-corrosion, or corrosion fatigue, a sample of the fluid that has been in contact...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
...</xref>) Table 5.3. Failure mechanisms for boiler tubing ( Ref 1 ) Stress-rupture Short-term overheating High-temperature creep Dissimilar-metal welds Water-side corrosion Caustic corrosion Hydrogen damage Pitting (localized corrosion) Stress-corrosion cracking Fire-side...
Image
Published: 01 January 2015
Fig. 3.15 Notched stress-rupture properties under sustained loading. The Ti-8Mn sheet alloy is susceptible to the strain-aging type of hydrogen embrittlement. Notched tensile specimens were loaded to stresses below normal failure stress. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... not as serious (or as sudden) as fracture, because wear is usually anticipated. Failures can also be induced by service temperatures. Examples include creep deformation and rupture at elevated temperature, or the brittle fracture of body-centered cubic (bcc) metals at low temperatures. Cyclic stress (fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
...-flow nozzle box. Fig. 6.49. Relationship between relaxed stress and rupture strength at the same duration for times from 1000 to 30,000 h and temperatures from 475 to 600 °C (885 to 1110 °F) ( Ref 118 ). Fig. 6.50. Rupture strengths of bolt steels ( Ref 119 ). Fig. 6.51...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
... Failure mode Type of failure Fatigue Tooth bending, surface contact (pitting or spalling), rolling contact, thermal fatigue Impact Tooth bending, tooth shear, tooth chipping, case crushing, torsional shear Wear Abrasive, adhesive Stress rupture Internal, external List of contact...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490059
EISBN: 978-1-62708-340-9
...:    Acoustic emission    Positron annihilation    Barkhausen noise analysis Not sufficiently developed at this time Strain (dimension) measurement Uncertainty regarding original dimensions Lack of clear-cut failure criteria Difficulty in detecting localized damage Rupture testing Difficulty in sample...