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temperature-control methodology

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... of a failure. Although designers have always had to be concerned with the possible effects of item failures, FMEA developed as a formal methodology during the 1950s at Grumman Aircraft Engineering Corporation, where it was used to analyze the safety of flight control systems for naval aircraft ( Ref 1 , 2...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
...-temperature equipment and structures subjected to steady-state or cyclic stresses, the principal design considerations are creep control, oxidation prevention through the use of oxidation-resistant materials or coatings, and selection of materials that have good stress-rupture and creep properties...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006802
EISBN: 978-1-62708-329-4
... are creep control, oxidation prevention through the use of oxidation-resistant materials or coatings, and selection of materials that have good stress-rupture and creep properties. The criteria for failure is to not go below a minimum stress-rupture strength for a given operating stress and temperature...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... Abstract This article provides some new developments in elevated-temperature and life assessments. It is aimed at providing an overview of the damage mechanisms of concern, with a focus on creep, and the methodologies for design and in-service assessment of components operating at elevated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001559
EISBN: 978-1-62708-229-7
... of low level surface chlorides. Controls were implemented to insure that temperatures are kept below 150 deg F, or, walls of the pipe are moisture-free or the cumulative wetted period will never exceed 30 h. Chlorides Piping 304 UNS S30400 Stress-corrosion cracking Transgranular fracture...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006809
EISBN: 978-1-62708-329-4
... ( San Antonio, TX ) 10.1115/PVP2019-93207 12. Kummari S. , Macejko B. , and Prueter P. , “ Proposed Methodology Changes to Determine Minimum Design Metal Temperature of ASME/API Impact Tested Materials Based on Fracture Mechanics ,” PVP2018-84795, Proceedings of the ASME 2018...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
.... It is noteworthy that the value of fatigue strength exponent, b , decreases with temperature. However, due to the non-availability of b at different temperatures, a value of b equal to –0.0928 is used [ 8 ] in all case studies. Methodology The numerical simulation of extrusion process and dynamic die...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... was below 7 for more than 1 hEliminate flow disruptions when possibleReduce local heat flux regions Use equilibrium phosphate boiler water control using trisodium phosphate only (no mono- or bisodium phosphate)Volatile feedwater chemistry controlReduce drum pressure The methodology used by EPRI...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
... the rate-controlling mechanism is associated with temperature. Tribofilm mechanisms are those that involve the formation of layers of wear debris on and between surfaces and the loss of material from these layers. Tribofilm mechanisms tend to be significant in unlubricated sliding situations, particularly...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... predictions from multipoint polymer aging data. ISO 176 and ASTM D1203 cover the stability of plasticizers in polymers and are used for quality-control testing. Thermal gravimetric analysis can be used to evaluate thermal stability as a function of temperature (see ISO 11358 and ASTM E1131). The technique...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... disruptions when possible Reduce local heat-flux regions Use equilibrium phosphate boiler water control using trisodium phosphate only (no mono- or bisodium phosphate) Volatile feedwater chemistry control Reduce drum pressure The methodology used by EPRI to classify boiler tube damage mechanisms...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... to: Controlled access Avoiding storing outside when possible Providing temperature and/or humidity control for components of interest Packaging certain component(s) separately Storing specific component(s) in or with desiccant Using protective packaging In addition to documenting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
... and not exhaustive; they provide a way in which to view the TMF process and a methodology for developing engineering models. Stable Precipitate Structure and Plasticity/ Oxidation In certain applications, such as disks and turbine blades in jet engines, the temperatures and stresses...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
...-processing industries, with design requirements involving corrosion resistance and elevated-temperature service. Many other engineering disciplines also have unique and special requirements for design and materials selection. In electrical engineering design, for example, the physical property...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... the site for almost six months. This CSB report also highlights four other BAHX fatigue failures and emphasizes the need for improved design, operating, and mechanical integrity practices, including changing inspection strategies and limiting the magnitude of process temperature fluctuations ( Ref 22...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006921
EISBN: 978-1-62708-395-9
... content and pH values that equate to a minimum 825 mv oxidation reduction potential (ORP) ( Ref 9 ). Typically, the test fluid is controlled at 4 ppm free chlorine at a pH of 6.8. A multiple regression of the data obtained under two stresses and a minimum of three temperatures with two replications...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... and fabrication sources of failure, addresses the key factors in production and quality control, and explains failure analysis of AM parts. binder jet sintering directed energy deposition failure analysis metal products metallurgical characteristics powder bed fusion quality assurance ADDITIVE...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
...-processing industries with design requirements involving corrosion resistance and elevated-temperature service. Many other engineering disciplines also have unique and special requirements for design and materials selection. In electrical engineering design, for example, the physical property...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001820
EISBN: 978-1-62708-241-9
... that the sulfur content is in the level of 24,000 ppm. Fluid circulating through the wellhead flow control valve is sour gas with wet H 2 S. The upstream pressure is 1100 psi and the maximum working temperature 90 °C. These bodies (three valve bodies installed in different sour gas wells) have been operating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
... or to determine whether a plastic resin has undergone partial oxidation. Thermogravimetric Analysis Thermogravimetric analysis (TGA) is a thermal analysis technique that measures the amount and rate of change in the weight of a material as a function of temperature or time in a controlled atmosphere...