Abstract The determination of fracture-mechanical properties is often very challenging, because the available standards like ASTM E1820 need specific size-requirements for specimen dimensions to obtain valid fracture toughness. Especially in ductile regime, where presence plasticity around crack tip affected by multiaxial stress state and its triaxiality, are frequently not met. fulfilment need...

Abstract The present work summarizes the results of an experimental campaign aimed at assessing ductility a wrought 17-4PH steel alloy. A simple specimen reproducing multiaxial stress states through universal testing machine is selected. Finite Element Model (FEM) for each test setup to extract local values and strain in most critical point on onset failure. Digital Image Correlation (DIC) tech...

We generate stellar distribution functions (DFs) in triaxial haloes in order to examine the reliability of slopes ≡ log M/ log r inferred by applying mass estimators of the form M ∝ Reσ 2 (i.e. assuming spherical symmetry, where Re and σ are luminous effective radius and global velocity dispersion, respectively) to two stellar subpopulations independently tracing the same gravitational potentia...

We investigate the intrinsic shapes of starless cores in the Orion GMC, using the prestellar core sample of Nutter & Ward-Thompson (2007), which is based on submillimeter SCUBA data. We employ a maximum-likelihood method to reconstruct the intrinsic distribution of ellipsoid axial ratios from observations of the axial ratios of projected plane-of-the-sky core ellipses. We find that, independent...

The existence of triaxial nuclei has been the subject of a long standing debate. The possibility of soft and rigid triaxiality has been proposed very early, and many theoretical and experimental studies have been devoted to this intriguing phenomenon since then. More recently two unique fingerprints of triaxiality in nuclei have been intensively studied: the wobbling motion [1] and the dynamic ...

(2005) Fracture behavior of polyetherimide (PEI) and interlaminar fracture of CF/PEI laminates at elevated temperatures. Abstract To investigate effects of environmental temperature on fracture behaviour of a polyetherimide (PEI) thermoplastic polymer and its carbon fibre (CF/PEI) composite, experimental and numerical studies were performed on compact tension (CT) and double cantilever beam (DC...

We study the expected properties and statistics of giant arcs produced by galaxy clusters in a ΛCDM universe and investigate how the characteristics of CDM clusters determine the properties of the arcs they generate. Due to the triaxiality and substructure of CDM halos, the giant arc cross section for individual clusters varies by more than an order of magnitude as a function of viewing angle. ...

This paper presents a validated finite element modeling approach for simulating shear cutting, needing minimal amount of experimental characterization. Only one uniaxial tensile test and force–displacement relationship from punching experiment are needed calibration, with maintained prediction accuracy compared to more experimentally demanding approaches. A key ingredient is the observation tha...