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Experiments on fracture of materials are made for various purposes. Of primary importance are those through which criteria predicting material failure by deformation and/or fracture are investigated. Since the demands of engineering application always precede the development of theories, there is another kind of experiment where conditions under which a particular material can fail are simulated as closely as possible to the operational situat...

An International Conference on the Application of Fracture Mechanics to Ma­ terials and Structures was held at the Hotel Kolpinghaus in Freiburg, West Ger­ many, June 20-24, 1983. It was attended by more than 250 participants from different countries which include Austria, Canada, Czechoslovakia, Democratic Republic of Germany, Denmark, Federal Republic of Germany, Finland, France, Greece, Hungary, Israel, Italy, Japan, Netherlands, Norway, Pe...

This book contains results of more than a decade's effort on coupled deformation and diffusion obtained in research performed at the Institute of Fracture and Solid Mechanics, Lehigh University. Despite the overwhelming number of theories on this subject, little is known on the assessment of coupling effects because of the inherent difficulties associated with experimentation. A case in point is couple thermoelasticity, a theory that has remai...

More than six years ago, several of Rabotnov's close friends and colleagues from the USSR and USA decided to contribute a volume on Plasticity and Failure of Solids in honor of his 70th birthday. The celebration was interrupted unexpectedly by his death on May 13, 1985 at which time another decision was made still to publish the work, but as a memorial volume. As in any field of scientific endeavor, research confronts the scientists with anoma...

This third volume of a series on Mechanies of Fraeture deals with eraeks in plates and shelIs. It was noted in Volume 2 on three-dimensional eraek problems that additional free surfaees can lead to substantial mathematical complexities, often making the analysis unmanageable. The theory of plates and shelIs forms a part of the theory of elasticity in which eertain physieal assumptions are made on the basis that the distanee between two bounded...

This book elucidates the correlation of fatigue crack growth data to multiscale cracking, particularly to the understanding of micrographs influenced by mechanical disturbance and thermodynamic variables. Attention is given to the interpretation of test data by fatigue crack growth rate using two empirical parameters in consistence with the fracture control methodology currently used by industry. Micrograph and crack growth rate data are prese...

It is weH known that the traditional failure criteria cannot adequately explain failures which occur at a nominal stress level considerably lower than the ultimate strength of the material. The current procedure for predicting the safe loads or safe useful life of a structural member has been evolved around the discipline oflinear fracture mechanics. This approach introduces the concept of a crack extension force which can be used to rank mate...

Contained in the volume are the papers presented at an International Symposium on Advanced Technology for Design and Fabrication of Composite Materials and Structures. The Symposium was organized by Consorzio per la Ricerca e l'Educazione Permanente, Institute of Fracture and Solid Mechanics, Lehigh University, Pennsylvania USA, Dipartimento di Ingegneria Strutturale del Politecnico di Torino, and Dipartimento di Ingegneria Aeronautica e Spazi...

The International Conference on Fracture Mechanics in Engineering Applica­ tion convened at the r~ational Aeronautical Laboratory (NAL) in Bangalore, India, March 26-30, 1979, with the presence of approximately 400 scientists and engi­ neers. The participants included individuals from all parts of India, United States of America, United Kingdom, Japan, Holland, France, Hong Kong, Korea, Sweden and Poland. The Conference was organized jointly b...

An International Conference on the Application of Fracture Mechanics to Ma­ terials and Structures was held at the Hotel Kolpinghaus in Freiburg, West Ger­ many, June 20-24, 1983. It was attended by more than 250 participants from different countries which include Austria, Canada, Czechoslovakia, Democratic Republic of Germany, Denmark, Federal Republic of Germany, Finland, France, Greece, Hungary, Israel, Italy, Japan, Netherlands, Norway, Pe...

The International Conference on Fracture Mechanics Technology Applied to Material Evaluation and Structure Design was held in Melbourne, Australia, from August 10 to 13, 1982. It was sponsored jointly by the Australian Fracture Group and Institute of Fracture and Solid Mechanics at Lehigh University. Pro­ fessor G. C. Sih of Lehigh University, Drs. N. E. Ryan and R. Jones of Aeronau­ tical Research Laboratories served as Co-Chairmen. They init...

The assessment of crack initiation and/or propagation has been the subject of many past discussions on fracture mechanics. Depending on how the chosen failure criterion is combined with the solution of a particular theory of continuum mechanics, the outcome could vary over a wide range. Mod­ elling of the material damage process could be elusive if the scale level of observation is left undefined. The specification of physical dimension alone ...

Section I Inclusions and Void Growth.- A critical assessment of plastic hole-growth mechanisms of ductile fracture.- Particles and crack growth in aluminum alloys.- Observations of cavity nucleation, growth and coalescence in dimpled rupture.- Propagation of cleavage microcracks in triaxial stress fields.- Section II Energy Criteria and Path Independent Integrals.- The calculation of energy release rates.- Surface layer energy and strain energ...

The planning meeting for a conference on Dynamic Crack Propagation was held at M.LT. in February 1971 and attended by research workers from several industrial, governmental and academic organizations. It was felt that a more specialized meeting would provide a better opportunity for both U.S. and foreign researchers to exchange their ideas and views on dynamic fracture, a subject which is seldom emphasized in national or international fracture...

The current situation with regard to the use of high-performance composites is one of seeking a reliable means of characterizing the fundamental properties and/or behavior of composite materials. The employment of such materials in vi­ tal structural applications require criteria as part of the materials selection and design procedures. However, the principal limitation of the many currently available procedures, most of which were borrowed fr...

The International Conference on Fracture Mechanics Technology Applied to Material Evaluation and Structure Design was held in Melbourne, Australia, from August 10 to 13, 1982. It was sponsored jointly by the Australian Fracture Group and Institute of Fracture and Solid Mechanics at Lehigh University. Pro­ fessor G. C. Sih of Lehigh University, Drs. N. E. Ryan and R. Jones of Aeronau­ tical Research Laboratories served as Co-Chairmen. They init...

An International Symposium on Defects and Fracture was held in Tuczno, Poland, 13-17 October 1980 under the sponsorship of the Polish Academy of Sci­ ences and Institute of Fracture and Solid Mechanics, Lehigh University. Profes­ sor H. Zorski of the Academy and Professor G. C. Sih of Lehigh University were Co-Chairmen. The idea for the Symposium was initiated by the members of the Organizing Committee: G. C. Sih (Co-Chairman), H. Zorski (Co-C...

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The assessment of crack initiation and/or propagation has been the subject of many past discussions on fracture mechanics. Depending on how the chosen failure criterion is combined with the solution of a particular theory of continuum mechanics, the outcome could vary over a wide range. Mod­ elling of the material damage process could be elusive if the scale level of observation is left undefined. The specification of physical dimension alone ...

Proceedings of a workshop on Composite Material Response: Constitutive Relations and Damage Mechanisms, held at the Stakis Grosvenor Hotel, Glasgow, UK, 30-31 July 1987