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公开(公告)号：US10732085B2
公开(公告)日：2020-08-04
申请号：US16124762
申请日：2018-09-07
IPC分类号： G01N3/62 , G01N3/02 , G06F30/15 , G06F119/18
摘要： A notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer; isolating the notch; and selectively etching the notch to provide an etched surface of the notch; wherein at least a portion of the re-melt material layer has been removed from the notch. In one aspect, there is provided a notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer, the specimen includes steel or an alloy thereof; isolating the notch; and selectively etching the notch with a first etching solution and a second etching solution to provide an etched surface on the notch; wherein at least a portion of the re-melt material layer has been removed from the notch.
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2.发明授权公开(公告)号：US10989640B2
公开(公告)日：2021-04-27
申请号：US16125294
申请日：2018-09-07
发明人： Xiaoming Li , Bogdan R. Krasnowski
摘要： A method for defining a threshold stress curve utilized in fatigue and/or damage tolerance analysis, the method including conducting a direct test method on a plurality of specimens with a notch to generate raw data, the notch in each of the specimens having a notch dimension; determining a plurality of analyzed data points based upon the raw data; determining a regression line based upon the plurality of data points, the regression line including an exponential portion and a power law portion; and connecting the exponential portion and the power law portion of the regression line to form a threshold stress curve based on the regression line.
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公开(公告)号：US20200025661A1
公开(公告)日：2020-01-23
申请号：US16124762
申请日：2018-09-07
摘要： A notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer; isolating the notch; and selectively etching the notch to provide an etched surface of the notch; wherein at least a portion of the re-melt material layer has been removed from the notch. In one aspect, there is provided a notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer, the specimen includes steel or an alloy thereof; isolating the notch; and selectively etching the notch with a first etching solution and a second etching solution to provide an etched surface on the notch; wherein at least a portion of the re-melt material layer has been removed from the notch.
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公开(公告)号：US10094751B2
公开(公告)日：2018-10-09
申请号：US15079946
申请日：2016-03-24
发明人： Xiaoming Li , Bogdan R. Krasnowski
摘要： A method of determining damage tolerance allowables in a specimen, the method includes applying a cyclic load to a specimen until a first crack emanates from a notch in the specimen, the cyclic load having a maximum load and a minimum load. The method also includes applying a subsequent cyclic load to the specimen until the first crack grows to form a second crack emanating from the first crack, the subsequent cyclic load having the same maximum load but a greater minimum load.
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5.发明申请公开(公告)号：US20190003944A1
公开(公告)日：2019-01-03
申请号：US16125294
申请日：2018-09-07
发明人： Xiaoming Li , Bogdan R. Krasnowski
摘要： A method for defining a threshold stress curve utilized in fatigue and/or damage tolerance analysis, the method including conducting a direct test method on a plurality of specimens with a notch to generate raw data, the notch in each of the specimens having a notch dimension; determining a plurality of analyzed data points based upon the raw data; determining a regression line based upon the plurality of data points, the regression line including an exponential portion and a power law portion; and connecting the exponential portion and the power law portion of the regression line to form a threshold stress curve based on the regression line.
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6.发明申请公开(公告)号：US20160282244A1
公开(公告)日：2016-09-29
申请号：US15079946
申请日：2016-03-24
发明人： Xiaoming Li , Bogdan R. Krasnowski
IPC分类号： G01N3/08
CPC分类号： G01N3/08 , G01N3/32 , G01N2203/0066
摘要： A method of determining damage tolerance allowables in a specimen, the method includes applying a cyclic load to a specimen until a first crack emanates from a notch in the specimen, the cyclic load having a maximum load and a minimum load. The method also includes applying a subsequent cyclic load to the specimen until the first crack grows to form a second crack emanating from the first crack, the subsequent cyclic load having the same maximum load but a lesser minimum load.
摘要翻译： 一种确定样品中的损伤容限允许的方法，该方法包括向试样施加循环载荷，直到第一裂纹从试样中的切口发出，循环载荷具有最大载荷和最小载荷。 该方法还包括向样品施加随后的循环载荷，直到第一裂纹增长以形成从第一裂纹发出的第二裂纹，随后的循环载荷具有相同的最大载荷但较小的最小载荷。
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