Download or read book Mechanics of Crack Arrest in Mild Steel written by Stanford University. Department of Materials Science and published by . This book was released on 1967 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic K sub IC values for mild steel were measured using instrumented impact bend tests containing fatigued notches and compared with the stress intensity values in a Robertson crack arrest test. It is proposed that crack arrest occurs by the initial slowing down of the crack due to increased temperature which leads to a dramatic deceleration due to the large strain-rate sensitivity of the material. When the strain rate at the crack tip is maintained by dynamic loading which causes forced crack propagation, the crack will remain brittle to much higher temperatures than the crack arrest temperature. (Author).

Download or read book Crack Arrest Methodology and Applications written by George T. Hahn and published by ASTM International. This book was released on 1980 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brittle Fracture in Steel Structures written by G.M. Boyd and published by Elsevier. This book was released on 2016-01-22 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brittle Fracture in Steel Structures emphasizes the prevention of brittle fracture in structures fabricated from mild and low alloy steel operating at normal ambient temperatures. This book is divided into seven chapters. Chapter 1 provides the historical background and summarizes numerous case histories of brittle fractures. The nature of the phenomenon and factors that influence brittle fracture, including various methods of testing to determine the notch ductilities of different steels are described in Chapters 2 to 4. The fifth chapter elaborates the design considerations affecting the choice of steel for structural applications. Chapter 6 reviews the main methods for assessing the degree of notch ductility needed for different applications, while Chapter 7 deliberates practical procedures, recommended by the Navy Department Advisory Committee on Structural Steels, for assessing the suitability of different steels for particular applications. This publication is beneficial to metallurgists and welders intending to acquire knowledge of mild steel structures fabricated by welding from rolled steel plates and sections.

Download or read book Crack Arrest Concepts for Failure Prevention and Life Extension written by Gyoujin Cho and published by Woodhead Publishing. This book was released on 1996-04-30 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of a seminar held at TWI in September, 1995, focusing on crack arrest philosophy which aknowledges that a brittle crack is arrested when it emerges from the critical region. Papers from prestigious researchers presented a critique and assessment of the theory and its application under: Introduction to crack arrest concepts; Recent trends in crack arrest research; Application of crack arrest concepts.

Download or read book Fast Fracture and Crack Arrest written by George T. Hahn and published by ASTM International. This book was released on 1977 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue crack Arrest in for Mild Steel Specimens Under Constant Amplitude Loading written by L. P. Pook and published by . This book was released on 1984 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brittle Fracture in Steel written by Great Britain. Admiralty. Advisory Committee on Structural Steel and published by . This book was released on 1962 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Grain Size and Temperature on Flat Fracture Propagation and Arrest in Mild Steel written by G. Bullock and published by . This book was released on 1977 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper presents results from an experimental program whose objective is the determination of the effects of grain size and temperature on flat fracture propagation and arrest in mild steel. Small laboratory test specimens, containing nitrided notches and surfaces so as to eliminate respectively the initiation barrier and shear lip formation, have been deformed by four-point bending. The onset of crack arrest has been correlated with the applied loading, and the fracture surface appearance during both propagation and arrest has been studied in detail; cleavage rather than ductile fracture is the predominent failure mechanism for a wide range of testing conditions. The results are discussed in relation to theoretical models describing the micromechanics of flat fracture propagation and arrest.

Download or read book Brittle Fracture in Steel written by and published by . This book was released on 1962 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brittle Fracture of Welded Plate written by William Joel Hall and published by . This book was released on 1967 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computer Simulation of Fast Crack Propagation and Arrest in Steel Plate with Temperature Gradient Based on Local Fracture Stress Criterion written by S. Machida and published by . This book was released on 1997 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fracture mechanics model for fast crack propagation and arrest is proposed based on the local fracture stress criterion. Dynamic fracture toughness (KD) for a propagating crack is calculated as a function of crack velocity and temperature. The model is extended to incorporate the effect of unbroken ligament (UL) formed near the plate surfaces and crack-front-tunneling. The model simulates acceleration, deceleration and arrest of a crack in a ESSO or a double-tension test plate with temperature-gradient. Calculated arrested crack lengths compare well with experimental results. It is shown that the conventional crack arrest toughness calculated from applied stress and arrested crack length depends on temperature-gradient and the toughness is not a unique material property.

Download or read book Fracture Mechanics written by Ted L. Anderson and published by CRC Press. This book was released on 2017-03-03 with total page 849 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture Mechanics: Fundamentals and Applications, Fourth Edition is the most useful and comprehensive guide to fracture mechanics available. It has been adopted by more than 150 universities worldwide and used by thousands of engineers and researchers. This new edition reflects the latest research, industry practices, applications, and computational analysis and modeling. It encompasses theory and applications, linear and nonlinear fracture mechanics, solid mechanics, and materials science with a unified, balanced, and in-depth approach. Numerous chapter problems have been added or revised, and additional resources are available for those teaching college courses or training sessions. Dr. Anderson’s own website can be accessed at www.FractureMechanics.com.

Download or read book Dynamic Fracture Mechanics written by Arun Shukla and published by World Scientific. This book was released on 2006-06-08 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering a wide variety of topics in dynamic fracture mechanics, this volume presents state-of-the-art experimental techniques and theoretical analysis on dynamic fracture in standard and exotic materials. Written by world renowned researchers, this valuable compendium contains eleven chapters on crack initiation, crack propagation, crack arrest, crack-stress wave interactions, and experimental, analytical and numerical methods in dynamic fracture mechanics.

Download or read book Micromechanisms of Fracture and Crack Arrest in Two High Strength Steels written by J. P.. Gudas and published by . This book was released on 1986 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of fracture properties of a quenched and tempered martensitic steel and copper precipitation on strengthened low carbon ferritic steel possessing similar yield strengths was conducted. The objective included evaluation of fracture toughness, and explanation of metallurgical mechanisms causing changes in relative fracture performance. A crack arrest toughness test procedure was developed to obtain full plate thickness, lower bound measurements of dynamic fracture toughness at various test temperatures. Micromechanisms of fracture processes were described using metallurgical analysis techniques. Keywords: crack arrest, crack initiation, cleavage fracture, and structural steel.

Download or read book Stress Analysis and Growth of Cracks written by and published by ASTM International. This book was released on 1972 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Fatigue and Fracture Mechanics written by John H. Underwood and published by ASTM International. This book was released on 1997 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: