In order to define a procedure for integrity assessment of pipelines and determining the fracture mechanics parameters, new type specimen with sharp notch, Pipe Ring Notched Tension (PRNT) specimen, is tested. The aim study determine influence geometry (cylindrical shape, as well number length stress concentrators) on parameters such force, Crack Mouth Opening Displacement CMOD, Tip CTOD J inte...

Detailed information about the mechanical properties of components in power plant was crucial process design. One essential piece characteristics material at various temperatures a tension load. In this study, tensile test applied to Alloy 800H with ranging from 24oC 900oC constant deformation rate 10-4/s. promising candidate for plants due its high corrosion resistance high-temperature environ...

Over the years, the ev8 code has been a very useful tool for the study of nuclear mean-field theory. Its main characteristic is that it solves the Hartree-Fock plus BCS equations for Skyrme type functionals via a discretization of the individual wave-functions on a three-dimensional cartesian mesh. This allows maximal flexibility in the determination of the nuclear shape by the variational proc...

The present paper describes a male coccid (Hemiptera: Coccoidea) in mid-Cretaceous Burmese amber with the largest known hamulohalteres on any extant or extinct coccid. Aside from this character, specimen has an unusual assortment of features, including prolonged head three cylindrical dorsal simple eyes rows joining laterally, single ocellus dorsally placed at apex head, compound ventro-lateral...

In this study, we measured the interfacial shear strength between a thermoplastic resin and carbon fiber by novel pinhole-type pull-out method. method, specimen had pinhole formed on thin metal plate filled with resin. A was embedded into pulled out from pinhole. Seven types of polymers were used as resin, including PP, Modified PA6, PA12, PC, PMMA PEEK. shape is determined geometry always cyli...

Fatigue crack growth in Al 2024 and 7050 specimens was assessed experimentally numerically. In the experimental investigation, various specimen configurations loading conditions were used to achieve pure mode I, II, mixed I/II, I/III, I/II/III. Sample as follows: first, compact tension shear (CTS) reproduce mode-I initial mode-II conditions; second, surface (SCT) analyze behavior of semiellipti...

the objective of this study was to determine the prevalence and distribution of chlamydia trachomatisgenotypes in shiraz, iran. two hundred twelve cervical swab samples were collected from women attendingshahid motahari polyclinic in shiraz, iran. the endocervical specimens were screened for c. trachomatis byplasmid pcr. genotyping was performed in c. trachomatis-positive samples by nested pcr ...

The paper describes new combined heating capability of the IPMech RAS inductively coupled plasma facility VGU-4. A 200 W ytterbium laser was added to as a source radiative heating. cylindrical specimen made Buran orbital vehicle’s heat-shielding tile material with black low catalytic coating exposed subsonic pure nitrogen jet and radiation. surface temperature reached 1325 ∘C during convective ...

Loading rates affect the behavior of concrete specimens from beginning loading process until failure. At rather high rates, longitudinal deformations in under a compressive load are practically elastic up ultimate limit state. It has been previously demonstrated that transverse effectively indicate high-strength entire static range. A theoretical model for cylindrical specimen failure load, bas...

The article describes the development of a modification Kolsky method used for testing brittle materials at splitting. scheme experiment involves application dynamic load along diametrically opposite generatrices cylindrical surface test specimen. At same time, it is in biaxial stressed state and fracture into two halves from action tensile stresses. based on assumption that material under beha...