Download or read book Transition Region for Corner Cracks at Holes written by P. A. Chansler and published by . This book was released on 1984 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study develops correction factors for currently used stress intensity factor equations to more accurately predict stress intensity factors for a corner-crack emanating from a hole as it transitions to a uniform through-the-thickness crack. These correction factors resulted in an increase in accuracy for total life prediction and much better correlation between analytical stress intensity factor predictions and experimental results in the transition region for 2024-T351 and 7075-T651 aluminum alloys. An experimental program was undertaken to generate all 2024-T351 aluminum test data. The 7075-T651 aluminum test data was generated during earlier work. Correction factors developed by Opel for 7075-T651 aluminum were evaluated for 2024-T351 aluminum and found to be excessively conservative. Hartranft and Sih suggested the stress intensity factors be evaluated at an imaginary surface at an angle phi away from the front and hole-bore surfaces. These stress intensity factors could then be used in the life prediction models for life from a corner-crack until back surface penetration. Life predictions were made using the new model, an instantaneous model (which assumes a through-crack at back surface penetration), Opel's model, Brussat's model and the Collipriest-Ehret model. Keywords include: Cracks, Crack propagation, Cracking (Fracturing).

Download or read book Transition Region for Corner Cracks at Holes written by Phillip A. Chansler (CAPT, USAF.) and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transition of Corner Cracks at Holes Into Through The Thickness Cracks written by S. W. Opel and published by . This book was released on 1983 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study developed correction factors for currently used stress intensity factor equations to more accurately predict stress intensity factors for a corner crack emanating from a hole as it transitions to a uniform through-the-thickness crack. These correction factors resulted in an approximate 15 percent increase in total life prediction and a far better correlation between analytical stress intensity factor predictions and experimental results in the transition region. The material used for total life predictions was 7075-T651 Aluminum, and the initial crack eccentricity, a/c, was always greater than one.

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Download or read book Fracture mechanics fifteenth symposium written by Melvin F. Kanninen and published by ASTM International. This book was released on with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Testing and Analysis Under Variable Amplitude Loading Conditions written by Peter C. McKeighan and published by ASTM International. This book was released on 2005 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Air University Abstracts of Research Reports written by Air University (U.S.). Library and published by . This book was released on 1984 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Air University Abstracts of Research Reports written by and published by . This book was released on 1984 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Life Analysis Methods Experimental evaluation of crack growth analysis methods for attachment lugs written by Thomas Richard Brussat and published by . This book was released on 1984 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fracture Mechanics Nineteenth Symposium written by Thomas A. Cruse and published by ASTM International. This book was released on 1988 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phillips Science of Dental Materials E Book written by Chiayi Shen and published by Elsevier Health Sciences. This book was released on 2021-05-13 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: **Selected for Doody's Core Titles® 2024 with "Essential Purchase" designation in Dentistry** Keep current with the evolving technology of dental materials! Phillips' Science of Dental Materials, 13th Edition provides comprehensive, up-to-date information on the materials used in cosmetic and restorative procedures in dentistry. It introduces the physical and chemical properties that are related to selection and use of dental biomaterials, including their composition, mechanical properties, manipulative variables, and the performance of dental restorations and prostheses. This edition adds three new chapters and hundreds of new full-color photographs. Written by dental scientists Chiayi Shen and H. Ralph Rawls along with prosthodontist Josephine Esquivel-Upshaw, this leading text/reference helps dentists select the right materials for oral procedures and helps dental labs ensure high-quality restorations. - 500 full-color photos and illustrations show concepts, dental instruments, and restorations. - Key terms are defined at the beginning of each chapter, covering terminology related to dental biomaterials and science. - Critical thinking questions stimulate thinking and emphasize important concepts and principles. - Logical, five-part organization of chapters makes the content easier to read and understand, with units on General Classes and Properties of Dental Materials, Direct Restorative Materials, Indirect Restorative Materials, Fabrication of Prostheses, and Assessing Dental Restorations. - Balance between materials science and manipulation bridges the gap of knowledge between dentists and lab technicians. - Major emphasis on biocompatibility serves as a useful guide to the principles and clinical implications of restorative materials safety. - Diverse and respected pool of contributors lends credibility and experience to each dental science topic. - NEW! Three new chapters are added: Digital Technology in Dentistry, In Vitro Research of Dental Materials, and Clinical Research of Restorations.

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Download or read book The Characteristics of Fatigue Damage in the Fuselage Riveted Lap Splice Joint written by Robert S. Piascik and published by . This book was released on 1997 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Case Histories in Offshore Engineering written by G. Maier and published by Springer. This book was released on 2014-05-04 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: