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Book Chapter
Fault Isolation Using Time Domain Reflectometry, Electro Optical Terahertz Pulse Reflectometry and Time Domain Transmissometry
Available to PurchaseSeries: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110132
EISBN: 978-1-62708-247-1
... Abstract Time-domain based characterization methods, mainly time-domain reflectometry (TDR) and time-domain transmissometry (TDT), have been used to locate faults in twisted cables, telegraph lines, and connectors in the electrical and telecommunication industry. This article provides a brief...
Abstract
Time-domain based characterization methods, mainly time-domain reflectometry (TDR) and time-domain transmissometry (TDT), have been used to locate faults in twisted cables, telegraph lines, and connectors in the electrical and telecommunication industry. This article provides a brief review of conventional TDR and its application limitations to advanced packages in semiconductor industry. The article introduces electro optical terahertz pulse reflectometry (EOTPR) and discusses how its improvements of using high frequency impulse signal addressed application challenges and quickly made it a well-adopted tool in the industry. The third part of this article introduces a new method which combines impulse signal and the TDT concept, and discusses a combo TDR and TDT method. Cases studies and application notes are shared and discussed for each technique. Application benefits and limitations of these techniques (TDR, EOTPR, and combo TDR/TDT) are summarized and compared.
Book Chapter
The Iron-Carbon Phase Diagram and Time-Temperature-Transformation (TTT) Diagrams
Available to PurchaseSeries: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560003
EISBN: 978-1-62708-353-9
... Abstract This chapter describes the two types of Time-Temperature-Transformation (TTT) diagrams used and outlines the methods of determining them. As a precursor to the examination of the decomposition of austenite, it first reviews the phases and microconstituents found in steels...
Abstract
This chapter describes the two types of Time-Temperature-Transformation (TTT) diagrams used and outlines the methods of determining them. As a precursor to the examination of the decomposition of austenite, it first reviews the phases and microconstituents found in steels. This includes a presentation of the iron-carbon phase diagram and the equilibrium phases. The chapter also covers the common microconstituents that form in steels, including the nomenclature used to describe them. The chapter provides a comparison of isothermal and continuous cooling TTT diagrams. These diagrams are affected by the carbon and alloy content and by the prior austenite grain size, and the way in which these factors affect them is examined.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
..., strain-range partitioning (SRP), several variants of the frequency-modified life equation, a hysteresis energy function, several variants of time- and cycle-fraction damage accumulation, methods based on crack- and void-growth considerations, damage mechanics, and a thermomechanical fatigue, oxidation...
Abstract
This chapter provides a detailed review of creep-fatigue analysis techniques, including the 10% rule, strain-range partitioning, several variants of the frequency-modified life equation, damage assessment based on tensile hysteresis energy, the OCTF (oxidation, creep, and thermomechanical fatigue) damage model, and numerous methods that make use of creep-rupture, crack-growth, and void-growth data. It also discusses the use of continuum damage mechanics and includes examples demonstrating the accuracy of each method as well as the procedures involved.
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(a) Real-time deflection measurement system; (b) real-time measurement of l...
Available to PurchasePublished: 01 August 2012
Fig. 9.11 (a) Real-time deflection measurement system; (b) real-time measurement of load, moment and tilting of the press. Reprinted with permission from Ref 9.19
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Stroke time and energy time for a hydraulic press and an equivalent mechani...
Available to PurchasePublished: 01 August 2012
Fig. 12.13 Stroke time and energy time for a hydraulic press and an equivalent mechanical press. BDC, bottom dead center; TDC, top dead center. Source: Ref 12.1
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Minimum sensitization time from a time-temperature-sensitization diagram as...
Available to PurchasePublished: 01 July 1997
Fig. 7 Minimum sensitization time from a time-temperature-sensitization diagram as a function of carbon content for a typical 300-series stainless steel alloy. Source: Ref 15
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Minimum sensitization time from a time-temperature-sensitization diagram as...
Available to PurchasePublished: 01 December 2006
Fig. 7 Minimum sensitization time from a time-temperature-sensitization diagram as a function of carbon content for a typical 300-series stainless steel alloy. Source: Ref 14
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Design for thermoplastic part performance. (a) Time-independent. (b) Time-d...
Available to PurchasePublished: 01 December 2003
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Input information for analysis of hold-time test. (a) Strain-time history. ...
Available to Purchase
in Total Strain-Based Strain-Range Partitioning—Isothermal and Thermomechanical Fatigue
> Fatigue and Durability of Metals at High Temperatures
Published: 01 July 2009
Fig. 6.2 Input information for analysis of hold-time test. (a) Strain-time history. (b) Strain-range life curves. (c) Cyclic stress-strain curve. (d) Relationship between steady-state creep rate and stress. (e) Hysteresis loop with various tensile hold times. (f) Stress relaxation curve during
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Time-temperature-transformation (TTT) diagram for a eutectoid (0.77%) carbo...
Available to PurchasePublished: 01 March 2006
Fig. 6 Time-temperature-transformation (TTT) diagram for a eutectoid (0.77%) carbon steel. Source: Ref 3
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Comparison of time-temperature-transformation cycles for conventional quenc...
Available to PurchasePublished: 01 March 2006
Fig. 7 Comparison of time-temperature-transformation cycles for conventional quenching and tempering and for austempering. Source: Ref 8
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Time-temperature-transformation diagrams with superimposed cooling curves s...
Available to PurchasePublished: 01 March 2006
Fig. 4 Time-temperature-transformation diagrams with superimposed cooling curves showing quenching and tempering. (a) Conventional process. (b) Martempering. (c) Modified martempering. Source: Ref 4
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Image
Case depth as a function of carburizing time for normal carburizing (no dif...
Available to PurchasePublished: 01 March 2006
Fig. 2 Case depth as a function of carburizing time for normal carburizing (no diffusion cycle) of low-carbon and certain low-alloy steels. Curve A: Total case depth. Curve B: Effective case depth for surface carbon content of 1.1% to saturation. Curve C: Effective case depth for surface
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Effects of time and temperature for liquid carburizing of 1020 steel. Sourc...
Available to PurchasePublished: 01 March 2006
Fig. 3 Effects of time and temperature for liquid carburizing of 1020 steel. Source: Ref 9
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Published: 01 June 2008
Fig. 7.11 Effect of solidification time on secondary dendrite arm spacing. Source: Ref 3
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Published: 01 June 2008
Fig. 9.14 Time-temperature profile for solution-treated and naturally aged alloys
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Published: 01 June 2008
Fig. 9.16 Time-temperature profile for solution-treated and peak-aged alloys
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Published: 01 June 2008
Fig. 9.18 Typical time-temperature profile for precipitation and overaged alloys
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Published: 01 June 2008
Fig. 13.11 Load-time curve for instrumented charpy impact test. Source: Ref 7
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