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Author : Wolfgang Tischer
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (221 download)
Download or read book Spectral Analysis of Acoustic Emission in Drilling written by Wolfgang Tischer and published by . This book was released on 1990 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yingjian Xiao
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)
Download or read book Evaluation of Drilling Performance and Penetration Mechanisms Using Seismic While Drilling and Acoustic Emission Methods written by Yingjian Xiao and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In oil and gas industry, drilling provides the path to exploit underground resources. Increasing rate of penetration (ROP) is one of the goal of drilling engineers to build this path. This dissertation focuses on study of a novel drilling technique, i.e. passive Vibration Assisted Rotary Drilling (pVARD) technique, and characterization of drilling mechanisms in comparison to the other two widely used drilling techniques, i.e. rotary drilling and rotary-percussion drilling (RPD). In terms of the fundamental differences between drill bit vibrations from three drilling techniques, seismic while drilling (SWD) and acoustic emission (AE) technologies are used to study drill bit sources and corresponding drilling mechanisms. First, geomechanics response of synthetic rock is studied using AE technique based on standard confined compressive strength (CCS) tests. This research aims to compare synthetic to natural rock in terms of deformation properties and provides support for the following drill-off test (DOT). Second, pVARD tool drillings are conducted in comparison to rotary drilling both in laboratory and field tests using AE and SWD techniques, respectively. In laboratory, AE signal energy and cutting size distribution are correlated to polycrystalline diamond compact (PDC) bit drilling performance. Results show that micro crack is generated from drag bit shearing action and the higher AE energy, coarser cuttings and higher ROP are obtained. In field test, surface wave energy and frequency bandwidth are correlated to drill bit vibration and drilling performance. Third, laboratory active vibration DOTs are conducted to study the penetration mechanisms from a diamond coring bit using AE technique. Spectral and energy analysis of the AE signals indicate that the higher ROP and larger cutting size are correlated with a higher AE energy and a lower AE frequency, indicating larger fractures are being created to generate the larger size of cuttings. Fourth, rotary-percussion drilling sources are studied by two field experiments on weak shales and hard arkose using SWD technique. Characterization of these sources consist of spectral analysis and mean power study, along with field measurements of the source radiation patterns. In addition, polarization analysis is conducted on P-waves recorded at surface geophones for understanding the particle motions.
Author : Valentyn Skalskyi
Publisher : Springer Nature
ISBN 13 : 3031112911
Total Pages : 231 pages
Book Rating : 4.0/5 (311 download)
Download or read book Acoustic Emission written by Valentyn Skalskyi and published by Springer Nature. This book was released on 2022-08-20 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents topical theoretical and experimental studies for developing advanced methods of detecting materials fracture and assessing their structural state using acoustic emission. It introduces new mathematical models characterizing the displacement fields arising from crack-like defects and establishes a new criterion for classifying different types of materials fracture based on specific parameters obtained from wavelet transforms of acoustic emission signals. The book applies this approach to experimental studies in three types of materials—fiber-reinforced composites, dental materials, and hydrogen-embrittled steels.
Author : Ronald A. Kline
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (37 download)
Download or read book The Spectral Analysis of Acoustic Emission Signals written by Ronald A. Kline and published by . This book was released on 1975 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Murat Karakus
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (15 download)
Download or read book Acoustic Emission Analysis for Rock-bit Interactions in Impregnated Diamond Core Drilling written by Murat Karakus and published by . This book was released on 2014 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main problems encountered in impregnated diamond core drilling operations for deep mineral explorations is to remotely infer bit wear state and to drill with optimal performance at great depth. Currently the optimal drilling performance relies heavily on operator experience. This paper aims to assess the feasibility of acoustic emission (AE) monitoring of the impregnated diamond drilling process and to establish relations between AE signals and diamond drill bit wear to improve overall drilling performance. AE relations with various drilling parameters have also been investigated to understand signal characteristics in relation to operational parameters. Echidna drill apparatus that simulates field exploration diamond drilling on a small scale is used to monitor AE during rock bit interaction. AE sensors were attached to both the drill and the rock in question to record acoustic signals being emitted whilst drilling. Two different tests viz. 'step tests' and 'wear tests' were carried out. Step tests on the Echidna drill include stepping down the depth of cut from 130μm to 0μm, while cutting speed is constant. Secondly, wear tests performed on the Echidna drill, involves accelerating the wear rate of the drill bit via two different types of tests, both in highly abrasive rock. Based on the step test results, a series of linear relations were developed. These relations are capable of estimating the depth of cut, weight on the bit (WOB) and torque on the bit (TOB) by simply using time spectrum of the AE signals. Wear tests also showed that AE amplitudes start to trend down over the time of accelerated wear.
Author : G. CURTIS
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (227 download)
Download or read book Acoustic Emission-4, Spectral Analysis of Acoustic Emission written by G. CURTIS and published by . This book was released on 1974 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE AUTHOR DISCUSSES THE SIGNIFICANCE AND MEASUREMENT OF THE FREQUENCY AND SHAPE OF ACOUSTIC EMISSION. HE CONSIDERS THEORETICAL DESCRIPTIONS OF ACOUSTIC EMISSION AND COMPARES THEM WITH EXPERIMENTAL EVIDENCE. HE CONSIDERS THE IMPLICATIONS OF THIS UNDERSTANDING OF THE NATURE OF ACOUSTIC EMISSION AND ILLUSTRATES THESE IMPLICATIONS BY A DESCRIPTION OF A PROGRAMME OF INVESTIGATION AT AERE HARWELL. THIS PROGRAMME ADDED TO OUR KNOWLEDGE OF ACOUSTIC EMISSION AND THE AUTHOR CONSIDERS THE RESULTS IN THE LIGHT OF OTHER EXPERIMENTS. HE CONCLUDES THAT SPECTRAL ANALYSIS COULD COMPLEMENT THE USE OF AMPLITUDE DISTRIBUTION AND RING-DOWN COUNTING BUT NOT ENOUGH IS YET KNOWN OF THE GENERAL MEANING OF THE SPECTRUM OF AN ACOUSTIC EMISSION.
Author : Shankar Krishnapillai
Publisher : Springer Nature
ISBN 13 : 9811641382
Total Pages : 530 pages
Book Rating : 4.8/5 (116 download)
Download or read book Composite Materials for Extreme Loading written by Shankar Krishnapillai and published by Springer Nature. This book was released on 2021-11-06 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the Indo-Korean workshop on Multi Functional Materials for Extreme Loading, 2021. The book mainly focuses on the very important emerging area of response to extreme loading of composites as well as other materials involving characterization studies, failure mechanisms conditions under quasi static to high strain rates, impact loads, blast loads, crash analysis, and other thermal and fatigue loads. The book also includes other important areas related to special materials and techniques such as 3D printing, nano-composites, multifunctional materials, and high temperature materials. The contents of this book are useful for beginners, industrial designers, academic researchers, and graduate students.
Author : T. Kishi
Publisher : Elsevier
ISBN 13 : 0080438512
Total Pages : 243 pages
Book Rating : 4.0/5 (84 download)
Download or read book Acoustic Emission-beyond the Millennium written by T. Kishi and published by Elsevier. This book was released on 2000-09 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theme of the 15th International Acoustic Emission Symposium (IAES15) was set as 'practicality for life-extension and maintenance of plants and structures'. Special emphasis was placed on the review of acoustic emission (AE) research and applications in the 20th century and its future in the 21st century. The technique for monitoring defects and abnormal vibrations due to machine failures is vitally important for the safety of structures in a modern society. AE, as a passive, rather than an active NDT method, has drawn much attention because of its applicability to on-stream surveillance of structures. One important point is its capability to acquire data very simply but with high sensitivity so that the development of a non-contact sensing technique is particularly important. A quantitative method to evaluate structural integrity and remaining life from the detected AE signals is strongly required. Quantitative analysis, based on inverse procedures, has provided a certain solution, but has not been utilized widely enough in structures due to its complexity. Its applicability is limited partly because the accuracy of solutions depends on noise levels and partly because the phenomenon is usually non-reproducible. AE is expected to be a next-generation technique not only to monitor conditions but also for the repair of damaged structures, combined with an active-adaptive technique using a 'solid state actuator'. 'Smart Materials and Structures' are known in this respect. AE is considered to be a very promising technique, together with such sensing techniques as optical fiber, shape memory alloy and electro-rheological fluid. Thus, AE can play a very important roll in monitoring, evaluating and repairing structures. In this workshop, a limited number of invited papers are presented for technical discussion to review the achievements of AE research and applications in the 20th century. The proceedings are entitled Acoustic Emission - Beyond the Millennium to celebrate the new millennium, and stepping forward to a new era. The authors and topics of these review papers were selected by the editorial board.
Author :
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.3/5 (91 download)
Download or read book Journal of Acoustic Emission written by and published by . This book was released on 1990 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 452 pages
Book Rating : 4.F/5 ( download)
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Henry Reginald Hardy
Publisher :
ISBN 13 : 9780878491025
Total Pages : 714 pages
Book Rating : 4.4/5 (91 download)
Download or read book Acoustic Emission/microseismic Activity in Geologic Structures and Materials written by Henry Reginald Hardy and published by . This book was released on 1998 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jr., H. Reginald Hardy
Publisher : CRC Press
ISBN 13 : 0203971108
Total Pages : 308 pages
Book Rating : 4.2/5 (39 download)
Download or read book Acoustic Emission/Microseismic Activity written by Jr., H. Reginald Hardy and published by CRC Press. This book was released on 2003-01-01 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of topics related to acoustic emission/microseismic (AE/MS) activity. It covers basic material behaviour, stress wave propagation, transducer design and installation, electronic instrumentation, data acquisition and analysis, and signal processing, as well as practical applications.
Author : National Institute of Standards and Technology (U.S.)
Publisher :
ISBN 13 :
Total Pages : 442 pages
Book Rating : 4.:/5 (31 download)
Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1983 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sotirios J. Vahaviolos
Publisher :
ISBN 13 :
Total Pages : 546 pages
Book Rating : 4.0/5 ( download)
Download or read book 4th World Meeting on Acoustic Emission written by Sotirios J. Vahaviolos and published by . This book was released on 1991 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karuppasamy, Karthik Selva Kumar
Publisher : IGI Global
ISBN 13 : 1799816915
Total Pages : 269 pages
Book Rating : 4.7/5 (998 download)
Download or read book Applications and Techniques for Experimental Stress Analysis written by Karuppasamy, Karthik Selva Kumar and published by IGI Global. This book was released on 2019-12-27 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of mechanical components for various engineering applications requires the understanding of stress distribution in the materials. The need of determining the nature of stress distribution on the components can be achieved with experimental techniques. Applications and Techniques for Experimental Stress Analysis is a timely research publication that examines how experimental stress analysis supports the development and validation of analytical and numerical models, the progress of phenomenological concepts, the measurement and control of system parameters under working conditions, and identification of sources of failure or malfunction. Highlighting a range of topics such as deformation, strain measurement, and element analysis, this book is essential for mechanical engineers, civil engineers, designers, aerospace engineers, researchers, industry professionals, academicians, and students.
Author : Curt Everson
Publisher :
ISBN 13 :
Total Pages : 340 pages
Book Rating : 4.:/5 (369 download)
Download or read book The Application of Acoustic Emission for Precision Drilling Process Monitoring written by Curt Everson and published by . This book was released on 1996 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Magdalena Diering
Publisher : Springer
ISBN 13 : 3030186822
Total Pages : 298 pages
Book Rating : 4.0/5 (31 download)
Download or read book Advances in Manufacturing II written by Magdalena Diering and published by Springer. This book was released on 2019-05-08 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers timely contributions on metrology and measurement systems, across different disciplines and field of applications. The chapters, which were presented at the 6th International Scientific-Technical Conference, MANUFACTURING 2019, held on May 19-21, 2019, in Poznan, Poland, cover cutting-edge topics in surface metrology, biology, chemistry, civil engineering, food science, material science, mechanical engineering, manufacturing, metrology, nanotechnology, physics, tribology, quality engineering, computer science, among others. By bringing together engineering and economic topics, the book is intended as an extensive, timely and practice-oriented reference guide for both researchers and practitioners. It is also expected to foster better communication and closer cooperation between universities and their business and industry partners.
