Beschreibung
As Directors of this NATO Workshop, we welcome this opportunity to record formally our thanks to the NATO Scientific Affairs Division for making our meeting possible through generous financial support and encouragement. This meeting has two purposes: the first obvious one because we have collected scientists from East, far East and west to discuss new development in the field of fracture mechanics: the notch fracture mechanics. The second is less obvious but perhaps in longer term more important that is the building of bridges between scientists in the frame of a network called Without Walls Institute on Notch Effects in Fatigue and Fracture". Physical perception of notch effects is not so easy to understand as the presence of a geometrical discontinuity as a worst effect than the simple reduction of cross section. Notch effects in fatigue and fracture is characterised by the following fundamental fact: it is not the maximum local stress or stress which governs the phenomena of fatigue and fracture. The physic shows that a process volume is needed probably to store the necessary energy for starting and propagating the phenomenon. This is a rupture of the traditional "strength of material" school which always give the prior importance of the local maximum stress. This concept of process volume was strongly affirmed during this workshop.
Inhaltsverzeichnis
Preface. Notch Effects in Fatigue and Fracture; G. Pluvinage. Characteristic Distance as a Material''s Structure Parameter in the Theory of Fracture Emanating from Notches and Cracks; A.J. Krasowsky. Inclusions Effect on the Notch Behaviour of a Low-Alloy Tempered Steel; R. Doglione, D. Firrao. Local Fracture Criterion for Notched Structures; E.M. Morozov. Notch Effects on the Fracture Behaviour of Orthotropic Materials; P. Jodin. Experimental Results on Temperature, Strain Rate and Size Effects in Steel of Reactor Pressure Vessel; K. Labibes, G. Solomos, B. Moras. The Notch and Size Effect in Brittle-Ductile Transition Behaviour of Materials; L. Toth. Mixed Mode Fracture for Notched Structures; L.S. Niu, Q.Y. Hu, W. Wang. Local Characteristics of (Brittle) Failure Assessed from Charpy Type Specimen; I. Dlouhy, Z. Chlup, M. Holzmann. Probabilistic Local Approach Based on Notched Tensile Specimen Data; V. Kozak, A. Novak. Analysis of the Ecolution of the Charpy Impact Test Through the Notch Fracture Mechanics; G. Pluvinage, L. Toth. The Critical Volume Method in Fatigue Analysis; D. Taylor, G. Wang. Notch Effect in High Cycle Fatigue; N. Kadi. Loading Mode and Notch Effect in High Cycle Fatigue; G. Qilafku. Probabilistic Description of Fatigue Crack Growth in a Titanium Alloy Notched Member; D. Kocanda, S. Kocanda, H. Tomaszekv. Experimental Analysis of Crack Growth in a Notched Specimen Made of Ni3al Intermetallic Alloy; P. Jozwik, L. Sniezek. Numerical Simulation of Fatigue Crack Growth for Corner Cracks Emanating from Fastener Holes; X.B. Lin, R.A. Smith. A Numerical Analysis of the Fatigue Life of Electron Beam Welds in an Aircraft Hydraulic Pump; B.T. Valaire. Fatigue Strength of Welded Joints by the Local Strain Method; C. Pappalettere, R. Nobile. Growth Rates and Closure Development of Short Fatigue Cracks at Notches and at Weld Toes; Y. Verreman. On Corrowion Fatigue Initiation from Notches and the Local Corrosion Fracture Approaches; I.M. Dmytrakh. Notch Effect in Welded Joints Submitted to Fatigue; D. Pigneaux, J. Gilgert. Index.
