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公开(公告)号：US11137751B2
公开(公告)日：2021-10-05
申请号：US16674886
申请日：2019-11-05
摘要： A method for estimating life of a component includes obtaining fracture data corresponding to a component. The fracture data includes a first dataset corresponding to a threshold region where the crack in the component is dormant below a fatigue threshold. The method further includes determining initial estimates of parameters of a crack growth rate model and parameters of temperature models corresponding to the crack growth rate model based on the fracture data. The method also includes computing optimized parameters of temperature models corresponding to the crack growth rate model, and a scatter parameter via simulation of a joint optimization method using the initial estimates. The method includes determining a cumulative distribution function based on the optimized parameters and the scatter parameter and estimating life of the component based on the cumulative distribution function.
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公开(公告)号：US20150129564A1
公开(公告)日：2015-05-14
申请号：US14076351
申请日：2013-11-11
CPC分类号： B23K1/19 , B23K1/0018 , B23K1/0056 , B23K1/20 , B23K1/203 , B23K35/36 , B23K2101/001 , B23K2103/08 , B23K2103/14 , B23K2103/26 , B23P6/002 , F01D5/005 , F05D2230/237 , F05D2300/607
摘要： A method of brazing including melting a surface region (26) of a substrate (12, 14, 22) and contacting a braze material (10) with the melted surface region, the braze material including a plurality of braze fillers (16) and a plurality of carbon structures (18). The method further includes subjecting the braze material to an amount of energy effective to melt the braze fillers but not the carbon structures, and cooling the braze material to form a brazement (28, 32) including the carbon structures within at least a portion of the substrate. The brazement includes a gradient (30) of the carbon structures, wherein a concentration of the carbon structures increases in a direction away from an interior of the substrate.
摘要翻译： 一种钎焊方法，包括熔化基底（12,14,22）的表面区域（26）并使钎焊材料（10）与熔化的表面区域接触，钎焊材料包括多个钎焊填料（16）和 多个碳结构（18）。 所述方法还包括使所述钎焊材料经受有效量的能量以熔化所述钎焊填料而不是所述碳结构，并且冷却所述钎焊材料以形成在所述钎焊材料的至少一部分内包括所述碳结构的钎焊（28,32） 基质。 钎焊包括碳结构的梯度（30），其中碳结构的浓度在远离衬底内部的方向上增加。
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公开(公告)号：US20210132599A1
公开(公告)日：2021-05-06
申请号：US16674886
申请日：2019-11-05
摘要： A method for estimating life of a component includes obtaining fracture data corresponding to a component. The fracture data includes a first dataset corresponding to a threshold region where the crack in the component is dormant below a fatigue threshold. The method further includes determining initial estimates of parameters of a crack growth rate model and parameters of temperature models corresponding to the crack growth rate model based on the fracture data. The method also includes computing optimized parameters of temperature models corresponding to the crack growth rate model, and a scatter parameter via simulation of a joint optimization method using the initial estimates. The method includes determining a cumulative distribution function based on the optimized parameters and the scatter parameter and estimating life of the component based on the cumulative distribution function.
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公开(公告)号：US09280620B2
公开(公告)日：2016-03-08
申请号：US13652671
申请日：2012-10-16
申请人： Christian Amann , Phillip W. Gravett , Kai Kadau
发明人： Christian Amann , Phillip W. Gravett , Kai Kadau
CPC分类号： G06F17/5018 , G01B5/00 , G01B5/04 , G01B5/30 , H01L21/67 , H01L21/67276 , H01L21/67288 , H01L22/12
摘要： A probabilistic estimation of fatigue crack life of a component is provided. A plurality of representations of the component is defined from material property scatter data and flaw-size scatter data, wherein each representation is defined by one possible material condition and flaw-size condition associated with the component. For each representation, a component location is selected and a determination is made whether said individual representation fails after a given number of cycles N, based on the calculation of a crack growth in the selected location. The crack growth is calculated on the basis of the material condition and the flaw-size condition in the selected location. Failure of the individual representation is determined if the crack growth is determined to be unstable. The sum total of the number of the representations that failed after N cycles is determined. A probability of failure of the component after N cycles is then determined.
摘要翻译： 提供了组件的疲劳裂纹寿命的概率估计。 组件的多个表示由材料属性散布数据和缺陷尺寸散布数据定义，其中每个表示由与该组件相关联的一个可能的材料条件和缺陷尺寸条件限定。 对于每个表示，选择分量位置，并且基于所选择的位置中的裂纹增长的计算，确定在给定数量的周期N之后所述单个表示是否失效。 基于材料条件和选定位置的缺陷尺寸条件计算裂纹扩展。 如果确定裂纹增长不稳定，则确定个体表示的失败。 确定N个周期后失败的表示数的总和。 然后确定在N个周期之后的分量的故障概率。
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5.发明申请PROBABILISTIC MODELING AND SIZING OF EMBEDDED FLAWS IN ULTRASONIC NONDESTRUCTIVE INSPECTIONS FOR FATIGUE DAMAGE PROGNOSTICS AND STRUCTURAL INTEGRITY ASSESSMENT 有权用于疲劳损伤预处理和结构完整性评估的超声波非结构检查中嵌入式液体的概率建模和尺寸公开(公告)号：US20140229149A1
公开(公告)日：2014-08-14
申请号：US14106919
申请日：2013-12-16
申请人： Xuefei Guan , Jingdan Zhang , Shaohua Kevin Zhou , Kai Kadau , Yan Guo , El Mahjoub Rasselkorde , Waheed A. Abbasi , Chin-Sheng Lee , Ashley L. Lewis , Steve H. Radke
发明人： Xuefei Guan , Jingdan Zhang , Shaohua Kevin Zhou , Kai Kadau , Yan Guo , El Mahjoub Rasselkorde , Waheed A. Abbasi , Chin-Sheng Lee , Ashley L. Lewis , Steve H. Radke
CPC分类号： G06N7/005 , G01N29/4472 , G01N2203/0066 , G01N2203/0073 , G01N2203/0214 , G01N2291/0258 , G06F17/5009
摘要： A method for probabilistic fatigue life prediction using nondestructive testing data considering uncertainties from nondestructive examination (NDE) data and fatigue model parameters. The method utilizes uncertainty quantification models for detection, sizing, fatigue model parameters and inputs. A probability of detection model is developed based on a log-linear model coupling an actual flaw size with a nondestructive examination (NDE) reported size. A distribution of the actual flaw size is derived for both NDE data without flaw indications and NDE data with flaw indications by using probabilistic modeling and Bayes theorem. A turbine rotor example with real world NDE inspection data is presented to demonstrate the overall methodology.
摘要翻译： 考虑非破坏性检查（NDE）数据和疲劳模型参数的不确定性，使用非破坏性测试数据的概率疲劳寿命预测方法。 该方法利用不确定性量化模型进行检测，大小，疲劳模型参数和输入。 基于将实际缺陷大小与非破坏性检查（NDE）报告的大小相联系的对数线性模型开发了检测概率。 通过使用概率建模和贝叶斯定理，可以为无缺陷指示的NDE数据和缺陷指示的NDE数据导出实际缺陷大小的分布。 提出了具有真实世界NDE检测数据的涡轮转子实例，以演示整体方法。
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公开(公告)号：US09792555B2
公开(公告)日：2017-10-17
申请号：US14106919
申请日：2013-12-16
申请人： Xuefei Guan , Jingdan Zhang , Shaohua Kevin Zhou , Kai Kadau , Yan Guo , El Mahjoub Rasselkorde , Waheed A. Abbasi , Chin-Sheng Lee , Ashley L. Lewis , Steve H. Radke
发明人： Xuefei Guan , Jingdan Zhang , Shaohua Kevin Zhou , Kai Kadau , Yan Guo , El Mahjoub Rasselkorde , Waheed A. Abbasi , Chin-Sheng Lee , Ashley L. Lewis , Steve H. Radke
CPC分类号： G06N7/005 , G01N29/4472 , G01N2203/0066 , G01N2203/0073 , G01N2203/0214 , G01N2291/0258 , G06F17/5009
摘要： A method for probabilistic fatigue life prediction using nondestructive testing data considering uncertainties from nondestructive examination (NDE) data and fatigue model parameters. The method utilizes uncertainty quantification models for detection, sizing, fatigue model parameters and inputs. A probability of detection model is developed based on a log-linear model coupling an actual flaw size with a nondestructive examination (NDE) reported size. A distribution of the actual flaw size is derived for both NDE data without flaw indications and NDE data with flaw indications by using probabilistic modeling and Bayes theorem. A turbine rotor example with real world NDE inspection data is presented to demonstrate the overall methodology.
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公开(公告)号：US20140107948A1
公开(公告)日：2014-04-17
申请号：US13652671
申请日：2012-10-16
申请人： Christian Amann , Phillip W. Gravett , Kai Kadau
发明人： Christian Amann , Phillip W. Gravett , Kai Kadau
CPC分类号： G06F17/5018 , G01B5/00 , G01B5/04 , G01B5/30 , H01L21/67 , H01L21/67276 , H01L21/67288 , H01L22/12
摘要： A probabilistic estimation of fatigue crack life of a component is provided. A plurality of representations of the component is defined from material property scatter data and flaw-size scatter data, wherein each representation is defined by one possible material condition and flaw-size condition associated with the component. For each representation, a component location is selected and a determination is made whether said individual representation fails after a given number of cycles N, based on the calculation of a crack growth in the selected location. The crack growth is calculated on the basis of the material condition and the flaw-size condition in the selected location. Failure of the individual representation is determined if the crack growth is determined to be unstable. The sum total of the number of the representations that failed after N cycles is determined. A probability of failure of the component after N cycles is then determined.
摘要翻译： 提供了组件的疲劳裂纹寿命的概率估计。 组件的多个表示由材料属性散布数据和缺陷尺寸散布数据定义，其中每个表示由与该组件相关联的一个可能的材料条件和缺陷尺寸条件限定。 对于每个表示，选择分量位置，并且基于所选择的位置中的裂纹增长的计算，确定在给定数量的周期N之后所述单个表示是否失效。 基于材料条件和选定位置的缺陷尺寸条件计算裂纹扩展。 如果确定裂纹增长不稳定，则确定个体表示的失败。 确定N个周期后失败的表示数的总和。 然后确定在N个周期之后的分量的故障概率。
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8.发明申请PROBABILISTIC FATIGUE LIFE PREDICTION USING ULTRASONIC INSPECTION DATA CONSIDERING EIFS UNCERTAINTY 审中-公开使用超声波检查数据考虑EIFS不确定度的概率疲劳寿命预测公开(公告)号：US20130268214A1
公开(公告)日：2013-10-10
申请号：US13855130
申请日：2013-04-02
申请人： Xuefei Guan , Jingdan Zhang , Kai Kadau , Shaohua Kevin Zhou
发明人： Xuefei Guan , Jingdan Zhang , Kai Kadau , Shaohua Kevin Zhou
IPC分类号： G01N29/44
CPC分类号： G01N29/4418 , G01N17/00 , G01N29/4472 , G01N2203/0218 , G01N2291/0258
摘要： A method for probabilistically predicting fatigue life in materials includes sampling a random variable for an actual equivalent initial flaw size (EIFS), generating random variables for parameters (ln C, m) of a fatigue crack growth equation a N = C ( Δ K ) m from a multivariate distribution, and solving the fatigue crack growth equation using these random variables. The reported EIFS data is obtained by ultrasonically scanning a target object, recording echo signals from the target object, and converting echo signal amplitudes to equivalent reflector sizes using previously recorded values from a scanned calibration block. The equivalent reflector sizes comprise the reported EIFS data.
摘要翻译： 一种用于概率预测材料疲劳寿命的方法包括对实际等效初始缺陷尺寸（EIFS）采样随机变量，为疲劳裂纹扩展方程的参数（ln C，m）生成随机变量a N = C Delta多普勒K）m，并使用这些随机变量求解疲劳裂纹扩展方程。 报告的EIFS数据是通过超声扫描目标物体，记录来自目标物体的回波信号，并使用先前记录的来自扫描校准块的值将回波信号幅度转换为等效反射镜尺寸而获得的。 等效的反射器尺寸包括报告的EIFS数据。
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