Dissolution and Thermal Spallation of Barre Granite Using Pure Water Hydrothermal Jets
Sign Up to like & getrecommendations! Published in 2018 at "Rock Mechanics and Rock Engineering"
DOI: 10.1007/s00603-018-1647-2
Abstract: Spallation induced by rapid hydrothermal heating was investigated as a possible method of drilling rock. In this study, an electrically-heated hydrothermal jet was impinged on the surface of cylindrical Barre Granite specimens (basement rock) contained… read more here.
Keywords: spallation; water; jet; thermal spallation ... See more keywords
Chromia Scale Thermally Grown on Pure Chromium Under Controlled p(O2) Atmosphere: I. Spallation Investigation Using Photoelectrochemical Techniques at a Mesoscale
Sign Up to like & getrecommendations! Published in 2018 at "Oxidation of Metals"
DOI: 10.1007/s11085-018-9844-7
Abstract: Chromia scales isothermally grown on pure chromium at 900 °C and a p(O2) of 10−12 atm during 30 min exhibit n- and p-type conduction associated with a duplex morphology with an internal equiaxed subscale for an inward (anionic)… read more here.
Keywords: spallation; grown pure; photoelectrochemical techniques; pure chromium ... See more keywords
Spallation Analysis of Concrete Under Pulse Load Based on Peridynamic Theory
Sign Up to like & getrecommendations! Published in 2020 at "Wireless Personal Communications"
DOI: 10.1007/s11277-020-07085-9
Abstract: Spallation analysis is one of important research directions in impact dynamics. By combining the newly developing Peridynamics (PD) theory, the spallation phenomenon of concrete is numerically simulated using C language and MATLAB programming. The factors… read more here.
Keywords: pulse load; spallation; spallation analysis; pulse ... See more keywords
Simulation of rock failure modes in thermal spallation drilling
Sign Up to like & getrecommendations! Published in 2020 at "Acta Geotechnica"
DOI: 10.1007/s11440-020-00927-7
Abstract: Thermal spallation drilling is a contact-less means of borehole excavation that works by exposing a rock surface to a high-temperature jet flame. In this study, we investigate crucial factors for the success of such thermal… read more here.
Keywords: spallation; spallation drilling; jet flame; failure ... See more keywords
Simultaneous thermographic and optical recording media examination of the first oxide spallation event from the surface of an austenitic stainless steel
Sign Up to like & getrecommendations! Published in 2020 at "Corrosion Science"
DOI: 10.1016/j.corsci.2020.109103
Abstract: Abstract Spallation of oxides grown on TP347H FG in air-saturated steam at 923 K for 50–1000 hours was investigated using a newly developed technique termed: Simultaneous Thermographic and Optical Recording Media Examination (STORME), recording the… read more here.
Keywords: simultaneous thermographic; spallation; thermographic optical; optical recording ... See more keywords
Mesoscale investigation of dynamic fracture in quartzite and sandstone and homogenization to macroscale
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2018.04.024
Abstract: Abstract The work presented here is part of the MEMIN (Multidisciplinary Experimental and Modeling Impact Research Network) project, which is devoted to the experimental and numerical investigation of the effects of meteorite impact on geological… read more here.
Keywords: fracture quartzite; spallation; quartzite sandstone; dynamic fracture ... See more keywords
Spallation study of chromia scales thermally grown on pure chromium in synthetic air
Sign Up to like & getrecommendations! Published in 2019 at "Materials Characterization"
DOI: 10.1016/j.matchar.2019.04.011
Abstract: Abstract Pure chromium oxidized at 900 °C in synthetic air (p(O2) ~ 0.2 atm) during 30 min gives a chromia scale presenting significant spallation. Contrary to what has recently been observed at lower oxygen partial pressure (10−12 atm) Latu-Romain… read more here.
Keywords: synthetic air; spallation; pure chromium;
The analytical study of inventories and physicochemical configuration of spallation products produced in Lead-Bismuth Eutectic of Accelerator Driven System
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Engineering and Design"
DOI: 10.1016/j.nucengdes.2019.110192
Abstract: Abstract Lead-Bismuth Eutectic (LBE) is used as a spallation neutron target and coolant material of Accelerator Driven System (ADS), and many kinds of elements are produced as spallation products via spallation reactions in LBE of… read more here.
Keywords: physicochemical configuration; spallation products; accelerator; spallation ... See more keywords
Experimental analysis on characteristics of micro-structure and mineralogy changes in thermal spallation drilling
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2018.03.107
Abstract: Abstract Thermal spallation drilling is a promising technology expected to exploit hydrocarbons in hard rocks. In this paper, thermal spallation experiments are conducted on six types of rocks. Comparisons are made in terms of mineral… read more here.
Keywords: spallation; mineralogy; micro particles; spallation drilling ... See more keywords
Investigation of impact craters on flat surface of cylindrical targets based on experiments and numerical simulations
Sign Up to like & getrecommendations! Published in 2018 at "Planetary and Space Science"
DOI: 10.1016/j.pss.2018.06.002
Abstract: Abstract We carried out impact experiments using cylindrical gypsum targets with various radii and investigated the crater on the top (flat) surface. At a ratio of projectile and target radii ∼1/20, the crater size abruptly… read more here.
Keywords: cylindrical targets; spallation; flat surface; spallation zone ... See more keywords
A new spallation mechanism of thermal barrier coatings on aero-engine turbine blades
Sign Up to like & getrecommendations! Published in 2018 at "Theoretical and Applied Mechanics Letters"
DOI: 10.1016/j.taml.2018.01.007
Abstract: ABSTRACT Laboratory experiments were conducted to study the spallation behaviour of thermal barrier coatings (TBCs) on aero-engine turbine blades manufactured by the electron-beam physical vapour deposition technique (EB-PVD). Intact blades were heated at temperature 1135°C… read more here.
Keywords: spallation; aero engine; turbine blades; thermal barrier ... See more keywords