Nptel provides elearning through online web and video courses various streams. Fundamentals and applications, which has remained the top selling textbook in its field since the 1st edition was published in 1991. Ravindra gettu, department of civil engineering, iit madras. Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. This text is prepared for a series of lectures on fracture mechanics. The preceding analysis considered fracture from an energy standpoint. Fracture mechanics lecture 1 free download as powerpoint presentation. The course covers the basic aspects of engineering fracture mechanics. Rcurve applications of fracture mechanics probabilistic fracture of.
Spectacular failures that triggered the birth of fracture mechanics, modes of loading. Mechanical engineering engineering fracture mechanics. Find materials for this course in the pages linked along the left. Introduction to fluid mechanics and fluid engineering. Spectacular failures that triggered the birth of fracture mechanics, modes of loading, classification as lefm and epfm, crack growth and fracture mechanisms. Definition of fracture and modes of fracture fracture. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the materials resistance to fracture in modern materials science, fracture mechanics is an important tool used to improve the.
Central questions in fracture mechanics are for example. The starting point of a fracture mechanics analysis therefore is a structure with a preexisting crack or flaw. Dynamic behavior of materials and structures fracture mechanics fracture mechanics is a branch of mechanics that is concerned with the study of the propagation of cracks and growth of flaws. Inglis solution for an elliptical hole has brought out the severity of a crack. Introduction to fracture mechanics david roylance department of materials science and engineering massachusetts institute of technology cambridge, ma 029. Lecture notes solid mechanics civil and environmental. Fracture previously, we have analyzed problems in which the plastic zone was small compared to the specimen dimensions small scale yielding. Fracture mechanics part 1 modern construction materials by dr. Fracture mechanics examples fracture mechanics can be applied in a large number of fields.
Definition of fracture and modes of fracture video lecture from introduction to fracture mechanics chapter of strength of materials subject for all engineering students. They help in understanding the sophisticated concepts of fracture mechanics prof. Ppt fracture mechanics powerpoint presentation free to. Author of elements of fracture mechanics, 1999, wheeler publishing, india. For more details on nptel basic fracture mechanics in this video i present a basic look at the field of fracture mechanics, introducing the. This course will cover topics in that begin with an overview of linear elastic fracture mechanics lefm and build to.
Prashant kumar, dept of mechanical engg, iit kanpur. To develop an understanding of the various aspects involved in the area. It should not be seen as a replacement to the oral class but more as a support as well as the powerpoint presentations are. The emphasis is on continuum mechanics models for energy flows and cracktip stress and deformation fields in elastic and elasticplastic materials. Welcome to the website of the online class of the fracture mechanics course. This book is written for students who want to begin to understand, apply and contribute to this vast and important. Basic notions of fracture mechanics ductile fracture. Scope teaching hours 4 the scope of theory covered is.
The precise location of cracks are unpredictable the load level. The main aim of the lectures is to provide amrl staff who are involved in aircraft fatigue and fracture research with a broad. We now carry out a linear elastic stress analysis of the cracked body, which will allow us to formulate critical conditions for the 16 growth of flaws more precisely. Fracture mechanics lecture 1 fracture mechanics fracture. The science of linear elastic fracture mechanics lefm has enjoyed great success in predicting the behaviour of bodies containing cracks, both in terms of brittle fracture and fatigue strength. Engineering fracture mechanics mechanical engineering. The aim of this website is to give you an easy access to the whole content of the fracture mechanics class.
Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Lectures from the national programme on technology enhanced learning nptel s. A free powerpoint ppt presentation displayed as a flash slide show on id. Fracture mechanics fracture mechanics is a branch of mechanics that is concerned with the study of the propagation of cracks and growth of flaws. Lecture notes fracture and fatigue materials science and. A search of the cornell library in winter 2006 uncovered over 181 entries containing fracture mechanics in the subject heading and 10,000 entries in a relevance keyword search.
Prediction of crack growth can be based on an energy balance. Ramesh, fnae professor department of applied mechanics indian institute of technology, madras chennai, india600 036. Objectives the objective of this section is to understand in detail the use of fracture mechanics for welded structures. This is the case for linear elastic fracture mechanics lefm. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Mechanics of defects and heterogeneities non destructive testing, modeling impact for ductile and brittle materials, mechanics of grain boundaries in polycrystals, dislocation dynamics, fracture in layered and graded materials. Video lecture in engineering fracture mechanics, prof. Video lecture on engineering fracture mechanics, prof. In todays lecture we present techniques for analyzing situations in which there can be large scale yielding, and determine expressions for the stress components inside the plastic zone. To put fracture mechanics into context for the design engineer. Deformation and fracture mechanics of engineering materials solution free 2. Sudden fracture suffered by brittle materials at ordinary temperatures.
Me3 fundamentals of fracture mechanics lecture notes 201415 shaun crofton imperial college london uk. Ramesh, fnae indian institute of technology madras. This book develops the basic elements needed for both fracture research and engineering practice. Spectacular failures that triggered the birth of fracture mechanics, modes of loading, classification as lefm and epfm, crack growth and fracture mechanisms, energy release rate, resistance, griffith theory of fracture, extension of griffith theory by irwin and orowan, rcurve, popin phenomena, crack branching. Engineering fracture mechanics nptel online videos. Ramesh, fnae professor department of applied mechanics indian institute of technology, madras chennai, india600 036 91442257405140584050 o 22437175 home. Fracture mechanics lecture notes in applied and computational mechanics, vol. Field and ctod lecture 39 fad and mixed mode fracture lecture 40 crack arrest and repair methodologies lecture 41 discussion session ii. Engineering fracture mechanics nptel online videos, courses. Deformation and fracture mechanics of engineering materials solution manual basic fracture mechanics in this video i present a basic look at the field of fracture mechanics, introducing the critical stress intensity factor, or fracture. Mechanics of fracture overview failure in materials and structures through fracture is extremely important in many structural, material and geophysical applications, at length scales that span from the atomic to the tectonic. Ramesh, department of applied mechanics, iit madras. Nptel nptel 2 course organisation modules title lectures module 1.
Although several text books are available on fracture mechanics, this is the first ebook on fracture mechanics. Mechanics of solids oscillations of a boat in a tank the research activities in this track involve theoretical, experimental and numerical techniques applied over a wide range of materials, composites, metals, polymers, etc. This book has been adopted as a required text by over 150 universities, and is a favorite reference for practicing engineers. Lectures from the national programme on technology enhanced learning mechanical engineering engineering fracture mechanics. Rcurve applications of fracture mechanics probabilistic fracture of brittle materials. Ramesh, iit madras 3 keep changing the load amplitude a. This website presents the fundamental principles of fracture mechanics, with many examples included. Aug 05, 2016 definition of fracture and modes of fracture video lecture from introduction to fracture mechanics chapter of strength of materials subject for all engineering students. Ramesh, department of mechanical engineering, iit madras. An analysis of this type falls within the field of linear elastic fracture mechanics lefm. It has come about from teaching the course to graduate and under graduate students for the last 15 years at iit kanpur and at iit madras.
Lecture notes fracture and fatigue materials science. Mechanics of fracture indian institute of technology. In todays lecture we present techniques for analyzing situations in which there can be large scale yielding, and. Proceedings of the institution of mechanical engineers.
Introduction to fracture mechanics david roylance department of materials science and engineering massachusetts institute of technology cambridge, ma 029 june 14, 2001. Nptel mechanical engineering engineering fracture mechanics. Apr 03, 2012 engineering fracture mechanics by prof. Mechanical engineering engineering fracture mechanics nptel.
9 243 279 1295 217 110 1259 637 799 885 811 1458 374 477 445 138 961 234 356 509 232 1017 1383 291 486 576 1295 728 1371 341 616 903 956 132 1495 110 309 1263