scholarly journals Динамическая прочность керамических материалов на основе ZrO-=SUB=-2-=/SUB=-, изготовленных по аддитивной технологии

2019 ◽  
Vol 45 (19) ◽  
pp. 28
Author(s):  
В.В. Промахов ◽  
А.С. Савиных ◽  
Я.А. Дубкова ◽  
Н.А. Шульц ◽  
А.С. Жуков ◽  
...  
Keyword(s):  
Elastic Limit ◽  
Spall Strength ◽  
Composite Ceramic ◽  
Ceramic Materials ◽  
Experimental Investigations ◽  
Wave Loading ◽  
Hugoniot Elastic Limit ◽  
Full Wave ◽  
Ceramic Samples ◽  
Wave Profiles

The ceramic and composite ceramic materials based on ZrO2 have been prepared by the additive manufacturing. The experimental investigations on the shock-wave loading of the fabricated samples were carried out. The Hugoniot elastic limit and spall strength of the ceramic samples were determined by analyzing the full wave profiles recorded by means of the laser velocimeter under their shock compression.

scholarly journals Прочностные свойства полученной с применением аддитивной технологии керамики на основе оксида алюминия при ударно-волновом нагружении

2018 ◽  
Vol 44 (19) ◽  
pp. 96
Author(s):  
В.В. Промахов ◽  
А.С. Савиных ◽  
Я.А. Дубкова ◽  
Н.А. Шульц ◽  
Н.В. Грунт ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Shock Compression ◽  
Elastic Limit ◽  
Laser Interferometer ◽  
Spall Strength ◽  
Oxide Ceramic ◽  
Hugoniot Elastic Limit ◽  
Full Wave ◽  
Ceramic Samples ◽  
Wave Profiles

AbstractAluminum-oxide ceramic samples have been prepared by additive manufacturing with subsequent sintering. The Hugoniot elastic limit and spall strength of the ceramics are determined by analyzing the full wave profiles of the samples recorded using a laser interferometer upon their shock compression with amplitudes of 6.8 and 13.8 GPa.

scholarly journals Influence of Material Properties on the Ballistic Performance of Ceramics for Personal Body Armour

2003 ◽  
Vol 10 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Christian Kaufmann ◽  
Duane Cronin ◽  
Michael Worswick ◽  
Gilles Pageau ◽  
Andre Beth
Keyword(s):  
Material Properties ◽  
Elastic Limit ◽  
Spall Strength ◽  
Ceramic Materials ◽  
Ceramic Tiles ◽  
Hugoniot Elastic Limit ◽  
Depth Of Penetration ◽  
Ballistic Performance ◽  
Body Armour ◽  
Penetration Tests

In support of improved personal armour development, depth of penetration tests have been conducted on four different ceramic materials including alumina, modified alumina, silicon carbide and boron carbide. These experiments consisted of impacting ceramic tiles bonded to aluminum cylinders with 0.50 caliber armour piercing projectiles. The results are presented in terms of ballistic efficiency, and the validity of using ballistic efficiency as a measure of ceramic performance was examined. In addition, the correlation between ballistic performance and ceramic material properties, such as elastic modulus, hardness, spall strength and Hugoniot Elastic Limit, has been considered.

scholarly journals The Strength of Inconel 625, Manufactured by the Method of Direct Laser Deposition under Sub-Microsecond Load Duration

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1796
Author(s):  
Vladimir Promakhov ◽  
Nikita Schulz ◽  
Alexander Vorozhtsov ◽  
Andrey Savinykh ◽  
Gennady Garkushin ◽  
...  
Keyword(s):  
Elastic Limit ◽  
Structural Parameters ◽  
Spall Strength ◽  
Laser Deposition ◽  
Inconel 625 ◽  
Chromium Alloy ◽  
Hugoniot Elastic Limit ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Wave Profiles

This paper presents the results of measurements of the spall strength and elastic-plastic proper-ties, under dynamic and static loads, of the high-strength heat-resistant nickel-chromium alloy Inconel 625, obtained by the direct laser deposition method. The structural parameters of the obtained samples and the mechanical properties during static tests were studied. According to our information, anisotropy in the structural parameters operates primarily at the level of plastic deformation of alloys. Shock compression of the additive alloy Inconel 625 samples in the range of 6–18 GPa was carried out using a light-gas gun, both along and perpendicular to the direction of the deposition. The strength characteristics were determined from the analysis of the shock wave profiles, which were recorded using the VISAR laser velocimeter during the loading of samples. It was found that the value of the spall strength of additive samples does not depend on the direction of deposition, and the Hugoniot elastic limit of samples loaded perpendicular to the deposition direction is about ~10% higher. With an increase in the maximum compression stress, the material’s spall strength increases slightly, but for both types of samples, a slight decrease in the Hugoniot elastic limit was observed as the compression stresses increase. On the basis of the measured wave profiles, shock Hugoniots of the samples of the alloy Inconel 625, loaded both along and perpendicular to the direction of deposition, are constructed in this pressure range.

scholarly journals Исследование скоростных зависимостей напряжения пластического течения и разрушения стали 09Г2СА-А при нормальной и повышенной температурах

2021 ◽  
Vol 91 (11) ◽  
pp. 1698
Author(s):  
Г.И. Канель ◽  
Г.В. Гаркушин ◽  
А.С. Савиных ◽  
С.В. Разоренов ◽  
С.А. Атрошенко
Keyword(s):  
Fracture Zone ◽  
Elastic Limit ◽  
Elevated Temperatures ◽  
Armco Iron ◽  
High Strain ◽  
Spall Strength ◽  
Metallographic Analysis ◽  
Hugoniot Elastic Limit ◽  
Wave Profiles ◽  
Temperature Rate

The Hugoniot elastic limit and spall strength of reactor steel 09G2SA-A under shock compression were measured by recording and subsequent analysis of the wave profiles. The temperature-rate dependences of the resistance to high-strain rate and fracture of steel at normal and elevated temperatures are determined. The results of measurements of the strength characteristics of steel under spall are supplemented by a metallographic analysis of the fracture zone and compared with data for 15Kh2NMFA reactor steel and Armco iron.

scholarly journals Влияние высокотемпературного отжига на сопротивление высокоскоростному деформированию и разрушению тантала при температуре 20 и 500-=SUP=-o-=/SUP=-C

2019 ◽  
Vol 89 (5) ◽  
pp. 725
Author(s):  
Г.В. Гаркушин ◽  
А.С. Савиных ◽  
С.В. Разоренов ◽  
Г.И. Канель
Keyword(s):  
Strain Rate ◽  
Elastic Limit ◽  
Spall Strength ◽  
Laser Doppler Velocimeter ◽  
Spall Fracture ◽  
Hugoniot Elastic Limit ◽  
Critical Fracture ◽  
Strength Dependence ◽  
Wave Profiles ◽  
Critical Fracture Stress

AbstractTwo series of shock-wave experiments have been conducted in order to measure the Hugoniot elastic limit and determine the strain rate dependence of critical fracture stress for tantalum experiencing spall fracture. Tantalum specimens have been preannealed in vacuum at 1000°C. The evolution of elastoplastic compression shock waves at room and elevated up to 500°C temperatures has been presented from complete wave profiles recorded by a VISAR laser Doppler velocimeter. The spall strength dependence on the strain rate during the expansion of the material in a rarefaction wave has been determined.

Using Acoustic Emission in Fracture Monitoring of Cementitious Composites

2013 ◽  
Vol 592-593 ◽  
pp. 521-524
Author(s):  
Gabriel Cséfalvay ◽  
Tomas Trčka ◽  
Ondřej Vodák ◽  
Petr Sedlak
Keyword(s):  
Acoustic Emission ◽  
Mechanical Response ◽  
Composite Ceramic ◽  
Ceramic Materials ◽  
Fracture Mechanisms ◽  
Wave Form ◽  
Element Analysis ◽  
Form Analysis ◽  
Full Wave ◽  
External Stresses

In order to predict the mechanical behavior of a material during its service life, it is important to evaluate its mechanical response under different types of external stresses by studying the initiation and development of cracks and the effects induced by damage and degradation. The non-destructive technique of analysis of acoustic emission, especially with source location and full wave-form analysis, provides excellent results on detecting and identifying initiations sites, cracking propagation and fracture mechanisms of polymer matrix composite, ceramic materials and rocks. For this study, loading tests in two different configurations were provided on specimens of same material and geometry. The significant AE features were monitored during each test and also locations of each AE event were estimated. Results of AE analysis are compared with a finite element analysis of the stress distribution and crack propagation within the specimens.

Effect of Thermal Treatment on the Hugoniot Elastic Limit and Spall Strength of the Preeutectic Pb–2.77% Sb Alloy

2020 ◽  
Vol 121 (11) ◽  
pp. 1119-1125
Author(s):  
G. V. Garkushin ◽  
A. S. Savinykh ◽  
G. I. Kanel’ ◽  
S. V. Razorenov ◽  
O. N. Ignatova ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Elastic Limit ◽  
Spall Strength ◽  
Hugoniot Elastic Limit

scholarly journals The spall strength and Hugoniot elastic limit of tantalum with various grain size

2012 ◽  
Author(s):  
Sergey V. Razorenov ◽  
Gennady Garkushin ◽  
Gennady I. Kanel ◽  
Olga Nikolaevna Ignatova
Keyword(s):  
Grain Size ◽  
Elastic Limit ◽  
Spall Strength ◽  
Hugoniot Elastic Limit
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