RU2012113993A - METHOD FOR DETERMINING RESIDUAL STRESSES AND ENERGY CHARACTERISTICS OF GAS-METRIC COATINGS - Google Patents
METHOD FOR DETERMINING RESIDUAL STRESSES AND ENERGY CHARACTERISTICS OF GAS-METRIC COATINGS Download PDFInfo
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- RU2012113993A RU2012113993A RU2012113993/28A RU2012113993A RU2012113993A RU 2012113993 A RU2012113993 A RU 2012113993A RU 2012113993/28 A RU2012113993/28 A RU 2012113993/28A RU 2012113993 A RU2012113993 A RU 2012113993A RU 2012113993 A RU2012113993 A RU 2012113993A
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Abstract
Способ определения остаточных напряжений и энергетических характеристик газотермического покрытия, включающий нагружение образца с газотермическим покрытием, расположенного на опорах покрытием вниз, статической нагрузкой по 4-точечной схеме, отличающийся тем, что нагружение образца осуществляют плавно, до величины нагрузки, не превышающей предел упругости материала покрытия, последовательно разгружают до значения деформации растяжения, равной нулю, при этом измеряют остаточное усилие, продолжают разгружение до получения значения усилия, равного нулю, и измеряют остаточную деформацию сжатия; по полученному деформационному гистерезису рассчитывают остаточные напряжения в покрытии и его энергетические характеристики, включающие: энергию высвобождения внутренних напряжений (Дж); энергию, необходимую для полной релаксации остаточных напряжений (Дж); плотность энергии, необходимой для полной релаксации остаточных напряжений (Дж/м).A method for determining the residual stresses and energy characteristics of a thermal spray coating, including loading a specimen with a thermal spray coating, placed on the supports downward, with a static load in a 4-point circuit, characterized in that the loading of the specimen is carried out smoothly, up to a load value not exceeding the elastic limit of the coating material , successively unload to a tensile strain value equal to zero, while measuring the residual force, continue unloading until a value of y a force equal to zero, and measure the residual compressive strain; Based on the obtained deformation hysteresis, residual stresses in the coating and its energy characteristics are calculated, including: internal stress release energy (J); energy necessary for complete relaxation of residual stresses (J); energy density necessary for complete relaxation of residual stresses (J / m).
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RU2012113993/28A RU2499244C1 (en) | 2012-04-10 | 2012-04-10 | Method to determine residual stresses and energy characteristics of gas thermal coatings |
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RU2012113993/28A RU2499244C1 (en) | 2012-04-10 | 2012-04-10 | Method to determine residual stresses and energy characteristics of gas thermal coatings |
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RU2012113993A true RU2012113993A (en) | 2013-10-20 |
RU2499244C1 RU2499244C1 (en) | 2013-11-20 |
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RU2012113993/28A RU2499244C1 (en) | 2012-04-10 | 2012-04-10 | Method to determine residual stresses and energy characteristics of gas thermal coatings |
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Families Citing this family (1)
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RU2659620C1 (en) * | 2017-06-06 | 2018-07-03 | Общество с ограниченной ответственностью "КАИ-ЭЙНЕРЕН" ООО "КАИ-ЭЙНЕРЕН" | Method for calculating plastic deformation and residual life of gas-thermal coating |
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SU1681188A1 (en) * | 1989-07-14 | 1991-09-30 | Московский Инженерно-Физический Институт | Method for determining limit of elasticity at bending |
RU2357224C1 (en) * | 2007-10-04 | 2009-05-27 | Открытое акционерное общество "Государственный научный центр - Научно-исследовательский институт атомных реакторов" (ОАО "ГНЦ НИИАР") | Method of testing for relaxation under bending strain |
RU2349894C1 (en) * | 2007-10-04 | 2009-03-20 | Федеральное государственное унитарное предприятие "Государственный научный центр Росийской Федерации Научно-исследовательский институт атомных реакторов" | Bending stress relaxation test rig for plane samples |
US8177953B2 (en) * | 2008-12-17 | 2012-05-15 | Hamilton Sundstrand Corporation | Method and apparatus for evaluation of coated parts |
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