Dwell Time

Dwell Time PDF Author: Rosa Lowinger
Publisher: Simon and Schuster
ISBN: 1955905282
Category : Biography & Autobiography
Languages : en
Pages : 328

Get Book Here

Book Description
A Simon & Schuster eBook. Simon & Schuster has a great book for every reader.

Dwell Time

Dwell Time PDF Author: Rosa Lowinger
Publisher: Simon and Schuster
ISBN: 1955905282
Category : Biography & Autobiography
Languages : en
Pages : 328

Get Book Here

Book Description
A Simon & Schuster eBook. Simon & Schuster has a great book for every reader.

Effect of Dwell-times on Crack Propagation in Superalloys

Effect of Dwell-times on Crack Propagation in Superalloys PDF Author: Jonas Saarimäki
Publisher: Linköping University Electronic Press
ISBN: 9176858715
Category :
Languages : en
Pages : 62

Get Book Here

Book Description
Gas turbines are widely used in industry for power generation and as a power source at "hard to reach" locations where other possibilities for electrical supply are insufficient. There is a strong need for greener energy, considering the effect that pollution has had on global warming, and we need to come up with ways of producing cleaner electricity. A way to achieve this is by increasing the combustion temperature in gas turbines. This increases the demand on the high temperature performance of the materials used e.g. superalloys in the turbine. These high combustion temperatures can lead to detrimental degradation of critical components. These components are commonly subjected to cyclic loading of different types e.g. combined with dwell-times and overloads at elevated temperatures, which influence the crack growth. Dwell-times have shown to accelerate crack growth and change the cracking behaviour in both Inconel 718 and Haynes 282. Overloads at the beginning of the dwell-time cycle have shown to retard the dwell time effect on crack growth in Inconel 718. To understand these effects more microstructural investigations are needed. The work presented in this licentiate thesis was conducted under the umbrella of the research program Turbo Power; "High temperature fatigue crack propagation in nickel-based superalloys", concentrating on fatigue crack growth mechanisms in superalloys during dwell-times, which have shown to have a devastating effect on the crack propagation behaviour. Mechanical testing was performed under operation-like conditions in order to achieve representative microstructures and material data for the subsequent microstructural work. The microstructures were microscopically investigated in a scanning electron microscope (SEM) using electron channeling contrast imaging (ECCI) as well as using light optical microscopy. The outcome of this work has shown that there is a significant increase in crack growth rate when dwell-times are introduced at the maximum load (0% overload) in the fatigue cycle. With the introduction of a dwell-time there is also a shift from transgranular to intergranular crack growth for both Inconel 718 and Haynes 282. When an overload is applied prior to the dwell-time, the crack growth rate decreases with increasing overload levels in Inconel 718. At high temperature crack growth in Inconel 718 took place as intergranular crack growth along grain boundaries due to oxidation and the creation of nanometric voids. Another observed growth mechanism was crack advance along phase boundaries with subsequent severe oxidation of the phase. This thesis comprises two parts. The first giving an introduction to the field of superalloys and the acting microstructural mechanisms that influence fatigue during dwell times. The second part consists of two appended papers, which report the work completed so far in the project.

Welder's Handbook

Welder's Handbook PDF Author: Richard Finch
Publisher: Penguin
ISBN: 1440639310
Category : Technology & Engineering
Languages : en
Pages : 164

Get Book Here

Book Description
A newly-updated, state-of-the-art guide to MIG and TIG arc welding technology. Written by a noted authority in the field, this revised edition of HP's bestselling automotive book-for over 20 years-is a detailed, instructional manual on the theory, technique, equipment, and proper procedures of metal inert gas (MIG) and tungsten inert gas (TIG) welding.

Analysis and Synthesis of Switched Time-Delay Systems: The Average Dwell Time Approach

Analysis and Synthesis of Switched Time-Delay Systems: The Average Dwell Time Approach PDF Author: Dan Zhang
Publisher: Springer
ISBN: 9811311293
Category : Technology & Engineering
Languages : en
Pages : 202

Get Book Here

Book Description
This book, written by experts in the field, is based on the latest research on the analysis and synthesis of switched time-delay systems. It covers the stability, filtering, fault detection and control problems, which are studied using the average dwell time approach. It presents both the continuous-time and discrete-time systems and provides useful insights and methods, as well as practical algorithms that can be considered in other complex systems, such as neuron networks and genetic regulatory networks, making it a valuable resource for researchers, scientists and engineers in the field of system sciences and control communities.

Practical Guide to ICP-MS and Other Atomic Spectroscopy Techniques

Practical Guide to ICP-MS and Other Atomic Spectroscopy Techniques PDF Author: Robert Thomas
Publisher: CRC Press
ISBN: 1000915514
Category : Science
Languages : en
Pages : 604

Get Book Here

Book Description
Written by one of the very first practitioners of ICP-MS, Practical Guide to ICP-MS and Other Atomic Spectroscopy Techniques: A Tutorial for Beginners presents ICP-MS in a completely novel and refreshing way. By comparing it with other complementary atomic spectroscopy (AS) techniques, it gives the trace element analysis user community a glimpse into why the technique was first developed and how the application landscape has defined its use today, 40 years after it was first commercialized in 1983. What’s new in the 4th edition: Updated chapters on the fundamental principles and applications of ICP-MS New chapters on complementary AS techniques including AA, AF, ICP-OES, MIP-AES, XRF, XRD, LIBS, LALI-TOFMS Strategies for reducing errors and contamination with plasma spectrochemical techniques Comparison of collision and reaction cells including triple/multi quad systems Novel approaches to sample digestion Alternative sample introduction accessories Comprehensive glossary of terms used in AS New vendor contact information The book is not only suited to novices and beginners, but also to more experienced analytical scientists who want to know more about recent ICP-MS developments, and where the technique might be heading in the future. Furthermore, it offers much needed guidance on how best to evaluate commercial AS instrumentation and what might be the best technique, based on your lab’s specific application demands.

Electronics

Electronics PDF Author:
Publisher:
ISBN:
Category : Electronics
Languages : en
Pages : 1736

Get Book Here

Book Description
June issues, 1941-44 and Nov. issue, 1945, include a buyers' guide section.

Materials and Manufacturing

Materials and Manufacturing PDF Author: Jian Zhong Wang
Publisher: Trans Tech Publications Ltd
ISBN: 3038136298
Category : Technology & Engineering
Languages : en
Pages : 1378

Get Book Here

Book Description
Selected, peer reviewed papers from the International Conference on Material and Manufacturing (ICMM), September 7-9, 2011 Jinzhou, Liaoning, P. R. China

Assessing Information Processing and Online Reasoning as a Prerequisite for Learning in Higher Education

Assessing Information Processing and Online Reasoning as a Prerequisite for Learning in Higher Education PDF Author: Olga Zlatkin-Troitschanskaia
Publisher: Frontiers Media SA
ISBN: 2832501648
Category : Science
Languages : en
Pages : 374

Get Book Here

Book Description


Chemical and Mechanical Engineering, Information Technologies

Chemical and Mechanical Engineering, Information Technologies PDF Author: B. Li
Publisher: Trans Tech Publications Ltd
ISBN: 303826217X
Category : Technology & Engineering
Languages : en
Pages : 2286

Get Book Here

Book Description
Selected, peer reviewed papers from the 2013 3rd International Symposium on Chemical Engineering and Material Properties (ISCEMP 2013), June 22-24, 2013, Sanya, China

Replacement of Renal Function by Dialysis

Replacement of Renal Function by Dialysis PDF Author: Walter H. Hörl
Publisher: Springer Science & Business Media
ISBN: 1402022751
Category : Medical
Languages : en
Pages : 1640

Get Book Here

Book Description
The leading Textbook on the subject. A completely rewritten and up-to-date fifth edition, based upon the highly respected fourth edition, edited by C. Jacobs, C.M. Kjellstrand, K.M. Koch and J.F. Winchester. This new edition is truly global in scope and features the contributions of the top experts from around the world.