April 2013
The browsable journal is available at this link
Gentilissimo lettore,
il presente numero è prevalentemente dedicato alla prestigiosa Scuola Russa di Meccanica della Frattura. L’obiettivo del numero è quello di offrire un aggiornamento su alcune delle linee di ricerca seguite in questo immenso paese, non tentando nemmeno di essere esaustivi (sarebbe stato necessario un numero certamente ben più corposo), ma cercando di offrire degli spunti di riflessione e, magari, dei riferimenti per possibili collaborazioni. Desidero cogliere l’occasione per ringraziare di cuore Oleg Plekhov, dell’Institute of continuous media mechanics UB RAS, Perm, Russia, e Guest Editor del presente numero, per il continuo supporto che ha reso possibile la pubblicazione di questo numero speciale, e Giacomo Risitano, componente del Consiglio di Presidenza IGF, che ha appunto proposto la special issue dedicata alla Scuola Russa di Meccanica della Frattura e che tanto si è adoperato per il suo successo.
Il numero è inoltre arricchito da alcuni lavori non legati alla “special issue”. Preferiamo mantenere i quattro appuntamenti annuali, conservando la tempistica di pubblicazione dei lavori presentati al di fuori delle special issue (massimo tre mesi dal primo invio). Come nel precedente numero di Frattura ed Integrità Strutturale, i lavori appartenenti alla special issue sono quindi contraddistinti da una scritta nella prima pagina in alto a destra.
Infine, qualche informazione riguardante il prossimo Convegno IGF XXII (Roma 1-3 luglio 2013). Il convegno si terrà presso la Facoltà di Ingegneria dell’Università di Roma “Sapienza”, nell’Aula del Chiostro (via Eudossiana 18). Al fine di agevolare il processo di indicizzazione, la lingua preferenziale degli atti è l’inglese. Sono comunque accettati anche lavori in italiano, ma con abstract lungo in inglese (almeno 800 parole). Nel sito IGF sono disponibili i template per la preparazione degli atti.
Le prossime scadenze sono:
- 10.04.2013: invio Abstract
- 15.04.2013: accettazione Abstract
- 31.05.2013: invio memorie
Francesco Iacoviello
Presidente IGF
Direttore Frattura ed Integrità Strutturale
The work deals with experimental study of macro localization of plastic yielding occurrences of structural carbon steel, research of singularity of deformation wave processes by complex use of contemporary test equipment and high effective…
The general regularities of damage healing during the annealing after cold deformation of metal materials are presented in this paper. In categories of damage mechanics the kinetic equations of damage healing during recovery and…
In-service fatigue cracking of turbine disks of EI698 superalloy is discussed based on crack growth analyses. In the bolt joint for disks to shaft connecting there is high level of stress-state, which directed to earlier in-disks fatigue…
A general approach to realization of models of elasticity, plasticity and fracture of heterogeneous materials within the framework of particle-based numerical methods is proposed in the paper. It is based on building many-body forces of…
The study of fragmentation statistics of brittle materials that includes four types of experiments is presented. Data processing of the fragmentation of glass plates under quasi-static loading and the fragmentation of quartz cylindrical…
The computational method of optimum fractional composition of a dispersible filler of polymeric composite on the basis of three-dimensionally linked elastomer is developed according to non-linear programming. The coefficient of dynamic…
An approach to multiscale description of deformation and fracture of brittle porous materials on the basis of movable cellular automaton method was proposed. The material characterized by pore size distribution function having two maxima…
The work is devoted to the experimental study of heat dissipation caused by plastic deformation and failure processes taking place in a titanium alloy Ti-4.2Al-1.6Mn. To investigate the spatial and time evolution of temperature, a set of…
In this paper is carried out the comparative analysis of effectiveness of test methods of determination of stiffness and strength properties of highly filled unidirectional fiberglass (Direct "E" roving 0.7 - orthophthalic polyester resin…
The paper is devoted to theoretical and experimental investigation of materials behavior on postcritical deformation stage (strain softening). Tests results, which confirm theoretical justification of specimen configuration impact on the…
Joint theoretical and experimental investigations have allowed to realize an approach with use of mathematical and physical modeling of processes of a shock wave loading of powder materials. In order to gain a better insight into the…
When we want to compare the strength of two materials, we compare the table values of quasistatic strength. However results of some experiments show that the strength ratio of the materials can change with increase in rate of loading. Such…
The hydrogen effect on the fracture toughness and fatigue crack growth behaviour in the martensitic high strength steel is investigated. The secondary ion mass spectrometry method has been employed to analyse the distribution of hydrogen…
On the basis of the developed model of quasibrittle medium the brittle and quasibrittle failure of composite ceramic materials with zirconium dioxide matrix and various percentage of hardening particles of corundum are studied numerically.…
Preferred formulation of the problem in two space dimensions are described for solving the three fundamental equations of mechanics (conservation of mass, conservation of momentum, and conservation of energy). Models of the behavior of…
The effect of processing parameters on the mechanical and metallurgical properties of dissimilar joints of AA6082–AA6061 produced by friction stir welding was analysed in this study. Different FSW samples were produced by varying the…
The scope of the present work is to point out a consistent simulation procedure for the quasi-static fracture processes, starting from the micro-structural characteristics of the material. To this aim, a local nineparameters…
