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

IPC分类号： G06N7/00 ,  G06F17/50 ,  G01N29/44

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.

公开(公告)号：US20160327463A1

公开(公告)日：2016-11-10

申请号：US15110324

申请日：2014-02-17

申请人： HITACHI, LTD.

发明人： Fuminori IWAMATSU

IPC分类号： G01N3/28 ,  G01N3/20

CPC分类号： G01N3/28 ,  G01M5/0033 ,  G01N3/08 ,  G01N3/12 ,  G01N3/20 ,  G01N2203/0062 ,  G01N2203/0067 ,  G01N2203/0214 ,  G01N2203/0274 ,  G06F17/5086 ,  G06F2217/34

摘要： An object of the invention is to provide a simple method and apparatus for evaluating a collapse load of a structure with respect to ductile fracture in the case where a plurality of flaws exist in a cylindrical structure that receives a bending load. The invention is an evaluation method and apparatus in which a result obtained by calculating a collapse load while a flaw having the largest area among a plurality of flaws is considered as a single flaw and a result obtained by replacing a plurality of flaws with penetration flaws corresponding to the plurality of flaws and calculating a collapse load are compared with each other and the smallest collapse load is set to be a collapse load of a structure.

摘要翻译： 本发明的目的是提供一种简单的方法和装置，用于在接收弯曲载荷的圆柱形结构中存在多个缺陷的情况下评估结构相对于延性断裂的塌陷载荷。 本发明是一种评价方法和装置，其中通过计算塌陷载荷而获得的结果，同时具有多个缺陷中具有最大面积的缺陷被认为是单个缺陷，并且通过用对应的穿孔缺陷替换多个缺陷而获得的结果 相对于多个缺陷并计算崩溃负载进行比较，并且将最小的塌陷负载设定为结构的塌陷负载。

公开(公告)号：US20100229652A1

公开(公告)日：2010-09-16

申请号：US12376742

申请日：2007-07-26

申请人： Ben Jeppesen ,  Paul Hayford

发明人： Ben Jeppesen ,  Paul Hayford

IPC分类号： G01N3/02

CPC分类号： G01N3/08 ,  G01N3/02 ,  G01N3/62 ,  G01N2203/0208 ,  G01N2203/0214 ,  G01N2203/0676 ,  G01N2203/0682 ,  G05B11/42 ,  G05B13/024

摘要： In a method of operating a material testing machine for testing a specimen, the machine has an electrically controllable actuator arranged to apply a force to the specimen. The method includes inputting a single adjustable parameter value, calculating all necessary feedback control gains therefrom, and subsequently conducting a test of the specimen.

摘要翻译： 在操作用于测试样品的材料测试机的方法中，机器具有被布置为向样本施加力的电可控致动器。 该方法包括输入单个可调参数值，从其计算所有必要的反馈控制增益，并随后进行样本测试。

公开(公告)号：US20070251327A1

公开(公告)日：2007-11-01

申请号：US11403367

申请日：2006-04-13

申请人： William Broene

发明人： William Broene

IPC分类号： G01B7/16

CPC分类号： G01N3/32 ,  G01N2203/0069 ,  G01N2203/0214 ,  G01N2203/0216

摘要： A method is disclosed for estimating or predicting residual strains resulting from metal formation. The method includes determining parameters indicative of physical and spatial characteristics of elements representing a formed metal part. A maximum plastic strain resulting from the metal forming processes is then estimated, as a function of the physical and spatial characteristics of a first one of the elements and a subset of the elements.

摘要翻译： 公开了一种用于估计或预测由金属形成产生的残余应变的方法。 该方法包括确定表示形成的金属部件的元件的物理和空间特性的参数。 然后，根据第一元素的物理和空间特征以及元素的子集，估计由金属形成过程产生的最大塑性应变。

公开(公告)号：US07089124B2

公开(公告)日：2006-08-08

申请号：US10989771

申请日：2004-11-16

申请人： Pingsha Dong ,  Jinmiao Zhang ,  Jeong Kyun Hong

发明人： Pingsha Dong ,  Jinmiao Zhang ,  Jeong Kyun Hong

IPC分类号： G01L1/00

CPC分类号： G01L5/00 ,  B23K31/02 ,  G01M5/0041 ,  G01N2203/0073 ,  G01N2203/0214 ,  G01N2203/0216 ,  G06F17/5018

摘要： Structural stress in a fatigue-prone region of a structure is determined by using the nodal forces and displacement values in the fatigue-prone region, or equilibrium-equivalent simple stress states consistent with elementary structural mechanics in the fatigue-prone region. The determination is substantially independent of mesh size and is particularly well-suited for applications where S-N curves are used in weld fatigue design and evaluation, where S represents nominal stress or stress range and N represents the number of cycles to failure.

摘要翻译： 通过使用疲劳易发区域中的节点力和位移值，或疲劳易发区域中与基本结构力学相一致的平衡等效简单应力状态来确定结构疲劳易发区域的结构应力。 该测定基本上与网格尺寸无关，特别适用于S-N曲线用于焊接疲劳设计和评估的应用，其中S表示标称应力或应力范围，N表示故障循环次数。

公开(公告)号：US6163757A

公开(公告)日：2000-12-19

申请号：US78047

申请日：1998-05-13

申请人： Tatsuhiko Aizawa ,  Guilan Wang ,  Junji Kihara ,  Sinji Kurashige ,  Takuya Murakami

发明人： Tatsuhiko Aizawa ,  Guilan Wang ,  Junji Kihara ,  Sinji Kurashige ,  Takuya Murakami

IPC分类号： D07B1/06 ,  G01L1/04 ,  G01L5/00 ,  G01N3/02 ,  G06F17/11 ,  G06F17/50

CPC分类号： G01L5/0047 ,  D07B7/022 ,  G01L1/04 ,  G01L1/048 ,  G01N2203/0214 ,  G01N2203/028

摘要： The characteristics of the wire are calculated, the wire having a cross-sectional shape which is substantially uniform along its length and having a length long enough in comparison with a diameter being deformed. The wire is divided into a plurality of elements with predetermined spacing along the length. When the wire is deformed, the shape of the wire after the deformation is determined. In the determined shape, a tangential stiffness equation using the element as a basis is calculated, and the calculated tangential stiffness equation is translated into a tangential stiffness equation using the whole of the wire as a basis. A global stiffness equation representing the whole wire is calculated from the tangential stiffness equation obtained by the translation. A load or a displacement produced in each portion of the wire is calculated from the global stiffness equation and the determined shape of the wire.

摘要翻译： 计算出导线的特性，该导线的横截面形状沿其长度基本上是均匀的，其长度足以使直径变形。 线沿着长度被分成具有预定间隔的多个元件。 当线变形时，确定变形后的线的形状。 在确定的形状中，计算使用元素作为基础的切向刚度方程，并且使用整个线作为基础将计算出的切向刚度方程转换为切向刚度方程。 从通过平移获得的切向刚度方程式计算表示整个线的全局刚度方程。 根据全局刚度方程和确定的导线形状计算线的每个部分产生的载荷或位移。

公开(公告)号：US20240264052A1

公开(公告)日：2024-08-08

申请号：US18577955

申请日：2022-06-08

申请人： Siemens Industry Software NV

发明人： Nicolas Lammens ,  Matthias Schulz

IPC分类号： G01N3/02 ,  G06N20/00

CPC分类号： G01N3/02 ,  G06N20/00 ,  G01N2203/0073 ,  G01N2203/0214 ,  G01N2203/0298

摘要： A method for generating a test coupon specification for predicting fatigue life of a component includes determining a load condition for the component, providing a component design, and performing a strength analysis of the component design under the load condition determining a critical area of the component and a stress-related parameter of the critical area. The method includes providing a material condition of the component at least for the critical area of the component. To assist an end-user in determining which are optimal tests to be performed in order to obtain most relevant data for fatigue prediction of a specific component, the method also includes providing a material model and providing, as an input to the material model, the stress-related parameter, and the material condition. The material model generates, as an output, a test coupon specification for being tested in a testing machine.

公开(公告)号：US10036693B2

公开(公告)日：2018-07-31

申请号：US15110324

申请日：2014-02-17

申请人： Hitachi, Ltd.

发明人： Fuminori Iwamatsu

IPC分类号： G01B3/52 ,  G01N3/28 ,  G01N3/08 ,  G01N3/12 ,  G01M5/00 ,  G01N3/20

CPC分类号： G01N3/28 ,  G01M5/0033 ,  G01N3/08 ,  G01N3/12 ,  G01N3/20 ,  G01N2203/0062 ,  G01N2203/0067 ,  G01N2203/0214 ,  G01N2203/0274 ,  G06F17/5009 ,  G06F2217/34

摘要： An object of the invention is to provide a simple method and apparatus for evaluating a collapse load of a structure with respect to ductile fracture in the case where a plurality of flaws exist in a cylindrical structure that receives a bending load. The invention is an evaluation method and apparatus in which a result obtained by calculating a collapse load while a flaw having the largest area among a plurality of flaws is considered as a single flaw and a result obtained by replacing a plurality of flaws with penetration flaws corresponding to the plurality of flaws and calculating a collapse load are compared with each other and the smallest collapse load is set to be a collapse load of a structure.

公开(公告)号：US20100114505A1

公开(公告)日：2010-05-06

申请号：US12266059

申请日：2008-11-06

申请人： KANGPING WANG ,  PEI-CHUNG WANG ,  JOHN D. FICKES ,  YIH-CHARNG DENG

发明人： KANGPING WANG ,  PEI-CHUNG WANG ,  JOHN D. FICKES ,  YIH-CHARNG DENG

IPC分类号： G01N3/00

CPC分类号： G01N3/00 ,  G01N2203/0214 ,  G01N2203/0222

摘要： Methods, program products, and computer systems for estimating a stress of a toughened structural adhesive polymer are provided. One method comprises selecting a strain, a strain rate, a temperature, or a combination thereof at which the stress is to be estimated. A value of a strain-hardening stress of the toughened structural adhesive polymer is determined, wherein the value of the strain-hardening stress is dependent on the temperature and the strain. A value of a non-strain-hardening stress of the toughened structural adhesive polymer is determined, wherein the value of the non-strain-hardening stress is dependent on the strain, the strain rate, and the temperature. The value of the strain-hardening stress is added to the value of the non-strain-hardening stress to obtain an estimated total stress.

摘要翻译： 提供了用于估计增韧的结构粘合剂聚合物的应力的方法，程序产品和计算机系统。 一种方法包括选择要估计应力的应变，应变速率，温度或其组合。 确定增韧的结构粘合剂聚合物的应变硬化应力的值，其中应变硬化应力的值取决于温度和应变。 确定增韧结构粘合剂聚合物的非应变硬化应力的值，其中非应变硬化应力的值取决于应变，应变速率和温度。 将应变硬化应力的值加到非应变硬化应力的值上，以获得估计的总应力。

公开(公告)号：US07516673B2

公开(公告)日：2009-04-14

申请号：US11424404

申请日：2006-06-15

申请人： Pingsha Dong ,  Jinmiao Zhang ,  Jeong Kyun Hong

发明人： Pingsha Dong ,  Jinmiao Zhang ,  Jeong Kyun Hong

IPC分类号： G01B5/30

CPC分类号： G01L5/00 ,  B23K31/02 ,  G01M5/0041 ,  G01N2203/0073 ,  G01N2203/0214 ,  G01N2203/0216 ,  G06F17/5018

摘要： Structural stress in a fatigue-prone region of a structure is determined and analyzed by using: i) the nodal forces and displacement values in the fatigue-prone region, or ii) equilibrium equivalent simple stress states consistent with elementary structural mechanics in the fatigue-prone region. Of course, it is contemplated that combinations, equivalents, or variations of the recited bases may alternatively be employed.

摘要翻译： 通过使用以下方法确定和分析结构疲劳易发区域中的结构应力：i）疲劳易发区域中的节点力和位移值，或ii）与疲劳 - 应变区域中的基本结构力学一致的平衡等效简单应力状态， 易发地区。 当然，也可以考虑使用所引用碱基的组合，等价物或变体。