公开(公告)号：US20180328826A1

公开(公告)日：2018-11-15

申请号：US15977030

申请日：2018-05-11

申请人： POSTECH ACADEMY-INDUSTRY FOUNDATION

发明人： Hyoung Seop Kim ,  Jae lk Yoon ,  Hak Hyeon Lee ,  Jaimyun Jung

IPC分类号： G01N3/28

CPC分类号： G01N3/28 ,  G01N2203/0067 ,  G01N2203/0212 ,  G01N2203/0218 ,  G01N2203/027 ,  G01N2203/0282 ,  G01N2203/0286 ,  G06F17/50

摘要： A method according to the present invention, it is possible to accurately measure the stretch-flangeability of sheet metal materials without size effects even when a small amount of specimen is used, compared with the stretch-flangeability established as an international standard, and to measure the stretch-flangeability in the local region. The method according to the present invention includes (a) performing a computer simulation of a small-scale specimen having a predetermined size by using finite element analysis to determine a size of the small-scale specimen; (b) using a standard-scale specimen having the same material as the small-scale specimen specified in the step (a) to perform a punching process specified in the standard testing method; (c) observing a distribution pattern of shearing defects in a hole-edge region of the specimen having performed the punching process, and evaluating a hole expansion ratio; (d) comparing the hole expansion ratio and the distribution pattern of shearing defects between the small-scale specimen and the standard-scale specimen to verify measurement reliability for the stretch-flangeability of the small-scale specimen; and (e) using the size of the small-scale specimen having verified the measurement reliability to evaluate stretch-flangeability.

公开(公告)号：US09874504B2

公开(公告)日：2018-01-23

申请号：US14897057

申请日：2014-06-26

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Shigeru Yonemura ,  Takuya Kuwayama ,  Akihiro Uenishi ,  Toshiyuki Niwa

IPC分类号： G01N3/20 ,  G06F17/50

CPC分类号： G01N3/20 ,  G01N2203/0212 ,  G01N2203/0214 ,  G06F17/5009 ,  G06F17/5018 ,  G06F2217/16 ,  G06F2217/42

摘要： A bending fracture limit stress is calculated for each of (bend radius at sheet thickness center of a metal sheet)/(initial sheet thickness of the metal sheet); a fracture limit curve and a fracture limit stress are calculated from work hardening characteristics; a fracture limit curve corresponding to (the metal sheet bend radius at sheet thickness center)/(the initial sheet thickness of the metal sheet) is calculated; a corresponding fracture limit stress is calculated from stress of the element subject to determination and the fracture limit curve; a risk ratio that is a ratio between the stress of the element subject to determination and the fracture limit stress is computed; and performing fracture determination for the element subject to determination based on the risk ratio.

公开(公告)号：US08965712B2

公开(公告)日：2015-02-24

申请号：US13051881

申请日：2011-03-18

申请人： Takahiro Omori ,  Kenji Hirohata ,  Tomoko Monda ,  Katsuaki Hiraoka ,  Minoru Mukai

发明人： Takahiro Omori ,  Kenji Hirohata ,  Tomoko Monda ,  Katsuaki Hiraoka ,  Minoru Mukai

IPC分类号： G01B3/44 ,  B23K31/12 ,  B23K1/00 ,  H01L23/00 ,  G06F11/30 ,  G01R31/04 ,  H05K1/02 ,  H05K3/34

CPC分类号： B23K31/125 ,  B23K1/00 ,  G01N2203/0073 ,  G01N2203/0212 ,  G01R31/048 ,  H01L24/13 ,  H01L24/14 ,  H01L24/17 ,  H01L2224/131 ,  H01L2224/14515 ,  H01L2224/14517 ,  H01L2224/16225 ,  H01L2224/17517 ,  H01L2924/10253 ,  H01L2924/1432 ,  H01L2924/1434 ,  H01L2924/3011 ,  H05K1/0271 ,  H05K3/3436 ,  H01L2924/014 ,  H01L2924/00

摘要： A life predicting method for a solder joint includes a step of referring to a temperature history of a measurement object having a solder joint, a step of examining at least one physical quantity selected from the group consisting of amplitude, a cycle number, a mean temperature, and a periodic length of a temperature variation with a cycle count method from the temperature history, a step of calculating a strain range by utilizing a previously prepared response surface from the physical quantity examined with the cycle count method, and a step of calculating a strain range increasing rate from a strain range with reference to a previously obtained damage index and a strain variation history of the strain range.

摘要翻译： 用于焊点的寿命预测方法包括参考具有焊接接头的测量对象的温度历史的步骤，检查从由振幅，周期数，平均温度等组成的组中选择的至少一个物理量的步骤 以及来自温度历史的循环计数法的温度变化的周期长度，通过利用由循环计数法检查的物理量利用预先准备好的响应面来计算应变范围的步骤，以及计算 从应变范围的应变范围增加率参考先前获得的损伤指数和应变范围的应变变化历史。

公开(公告)号：US20140163906A1

公开(公告)日：2014-06-12

申请号：US14080981

申请日：2013-11-15

申请人： SUMITOMO RUBBER INDUSTRIES, LTD.

发明人： Masaya TSUNODA ,  Arjun YADAV

IPC分类号： G01N33/44

CPC分类号： G01N33/445 ,  G01N2203/0025 ,  G01N2203/0092 ,  G01N2203/0212

摘要： A method for estimating the vulcanization degree of a rubber compound is disclosed. The torque of the rubber compound during vulcanization is measured to obtain a vulcanization curve. Values of invariables K1, K2 and m of a specific expression (1) which values minimize the error between the measured vulcanization curve and a (estimated cure) curve defined by the expression (1), are obtained. Each of different real numbers is assigned to the invariable K1 of the expression (1), and the expression (1) is approximated to the measured vulcanization curve, and then from the approximated expression (1), a set of values of the invariables K1, K2 and m are obtained. Such plural sets of the values are assigned to the expression (1) to obtain a plurality of the estimated vulcanization curves from which an estimated vulcanization curve whose error from the measured vulcanization curve is smallest, is found out.

摘要翻译： 公开了一种用于估计橡胶化合物的硫化度的方法。 测定硫化时的橡胶组合物的扭矩，得到硫化曲线。 获得最小化测量的硫化曲线与由式（1）定义的（估计固化）曲线之间的误差的特定表达式（1）的不变量K1，K2和m的值。 每个不同的实数被分配给表达式（1）的不变的K1，并且表达式（1）近似于测量的硫化曲线，然后从近似表达式（1），不变量K1的值的集合 ，得到K2和m。 将这些数值分配给表达式（1），得到多个估计硫化曲线，根据该硫化曲线，从硫化曲线求出的误差最小的估计硫化曲线被求出。

公开(公告)号：US08606532B2

公开(公告)日：2013-12-10

申请号：US13634341

申请日：2011-04-06

申请人： Shunji Hiwatashi ,  Shigeru Yonemura

发明人： Shunji Hiwatashi ,  Shigeru Yonemura

IPC分类号： G06F19/00 ,  G01L1/00

CPC分类号： G01N3/00 ,  G01M5/0033 ,  G01M7/08 ,  G01N2203/0094 ,  G01N2203/0212

摘要： A fracture determination method for determining a fracture of a metal structure includes, when a fracture determination target portion has returned from a plastic state to an elastic state, given that a stress when the portion returned to the elastic state is (x, y)=(σ2, σ1) (maximum principal stress: σ1, minimum principal stress: σ2) on a (x, y) coordinate plane, performing fracture determination of the fracture determination target portion using a re-yield stress R determined by the intersection between a straight line satisfying a relation y=(σ1/σ2)x and an yield curve obtained from the plastic state of the fracture determination target portion. Fracture determination can be performed with high accuracy even when the fracture determination target portion has returned from a plastic state to an elastic state.

摘要翻译： 用于确定金属结构的断裂的断裂确定方法包括：当断裂确定目标部分从塑性状态返回到弹性状态时，假定当返回到弹性状态的部分的应力为（x，y）= （x，y）坐标平面上的（σigma2，sigma1）（最大主应力：σ1，最小主应力：sigma2），使用通过a的交点确定的再屈服应力R来进行断裂确定目标部分的断裂确定 满足关系y =（sigma1 / sigma2）x的直线和从断裂确定目标部分的塑性状态获得的屈服曲线。 即使当断裂确定目标部分从塑性状态返回到弹性状态时，也可以高精度地进行断裂确定。

公开(公告)号：US20120271566A1

公开(公告)日：2012-10-25

申请号：US13091943

申请日：2011-04-21

申请人： Vinayak Deshmukh ,  Eric M. Johnson

发明人： Vinayak Deshmukh ,  Eric M. Johnson

IPC分类号： G06F19/00

CPC分类号： G01M5/0033 ,  G01N2203/0073 ,  G01N2203/0212 ,  G06F17/5018 ,  G06F2217/76

摘要： A method of determining the fatigue life of a structure includes the steps of: associating a mathematical equation for total strain amplitude with the structure: Δɛ 2 = σ f ′ E  ( 2  N f ) b + ɛ f ′  ( 2  N f ) c , where: Δε/2=strain amplitude, σf′=fatigue strength coefficient associated with a material of the structure, b=fatigue strength exponent of the material, E=cyclic modulus of elasticity of the material, 2Nf=number of cycles, εf′=fatigue ductility coefficient of the material, and c=fatigue ductility exponent of the material; reducing the fatigue strength exponent (b) such that an elastic portion of a total strain amplitude curve associated with the equation has a reduced slope to account for variable amplitude loading for the structure; generating a total strain amplitude curve, based upon the mathematical equation: Δɛ 2 = σ f ′ E  ( 2  N f ) b reduced + ɛ f ′  ( 2  N f ) c , where (breduced) is now the reduced fatigue strength exponent; and determining a fatigue life of the structure, based on the total strain amplitude curve with the reduced fatigue strength exponent.

摘要翻译： 确定结构的疲劳寿命的方法包括以下步骤：将总应变振幅的数学方程与以下结构相关联：＆Dgr;ε2 =＆sgr; f'E（2 N f）b +εf'（2 N f）c，其中：＆Dgr;＆egr / / 2 =应变幅度，＆sgr; f'=与材料相关的疲劳强度系数 结构，b =材料的疲劳强度指数，E =材料的循环弹性模量，2Nf =循环次数，e = f =材料的疲劳延展系数，c =材料的疲劳延性指数; 降低疲劳强度指数（b），使得与等式相关联的总应变幅度曲线的弹性部分具有减小的斜率，以解释该结构的可变幅度负载; 根据数学公式产生总应变幅度曲线：＆Dgr;ε2 =＆sgr; （2 N f）b减少+εf'（2 N f）c，其中（简称）现在是减少的疲劳强度指数; 并且基于具有降低的疲劳强度指数的总应变幅度曲线来确定结构的疲劳寿命。

公开(公告)号：US08261600B2

公开(公告)日：2012-09-11

申请号：US12324237

申请日：2008-11-26

申请人： Pierre-Jean Coudert ,  Bertrand Bellaton

发明人： Pierre-Jean Coudert ,  Bertrand Bellaton

IPC分类号： G01N3/46 ,  G06K9/00 ,  G06K15/00

CPC分类号： G01N3/42 ,  G01N2203/0098 ,  G01N2203/021 ,  G01N2203/0212

摘要： A method for analyzing a scratch from a scratch test includes (a) locating the beginning of the scratch relative to a reference position, (b) making the scratch on a bulk with an indenter while recording the applied force and at least one measurement parameter, as a function of the displacement of the indenter relative to the reference position, (c) acquiring and recording images of the scratch relative to the reference position, (d) synchronizing the recorded images, the applied force and the measurement parameter, as a function of the displacement of the indenter, (e) displaying curves of the applied force and of the measurement parameter as a function of the displacement of the indenter, and (f) displaying in a synchronized way an image of the scratch reconstructed from the recorded images.

摘要翻译： 用于从划痕测试分析划痕的方法包括：（a）定位相对于参考位置的划痕的开始，（b）在记录所施加的力和至少一个测量参数的同时，用压头进行大块的划痕， 作为压头相对于基准位置的位移的函数，（c）获取并记录划痕相对于基准位置的图像，（d）将记录图像，施加的力和测量参数同步作为函数 （e）显示所施加的力和测量参数的曲线作为压头的位移的函数，以及（f）以同步的方式显示从所记录的图像重建的划痕的图像 。

公开(公告)号：US07937986B2

公开(公告)日：2011-05-10

申请号：US10559532

申请日：2004-06-10

申请人： Takehiko Kawasaki ,  Norio Kaneko ,  Naoaki Maruyama

发明人： Takehiko Kawasaki ,  Norio Kaneko ,  Naoaki Maruyama

IPC分类号： G01M7/00

CPC分类号： G03G15/5029 ,  G01N3/42 ,  G01N29/045 ,  G01N33/34 ,  G01N2203/0051 ,  G01N2203/0212 ,  G01N2203/0282 ,  G01N2203/0623 ,  G01N2291/0237 ,  G01N2291/02845 ,  G03G2215/00776

摘要： To provide a sheet material identifying apparatus for identifying the kind of a sheet material, including an adjusting assembly for dehumidifying or humidifying a predetermined region of the sheet material and adjusting the moisture content of the predetermined region, external force applying means for applying an external force to the predetermined region of the sheet material whose moisture content is adjusted and detecting means for detecting an external force propagated through the sheet while the external force is applied by the external force applying means; wherein an external force is applied to the predetermined region whose moisture content is adjusted through the adjusting assembly by the external force applying means and the kind of a sheet material is identified in accordance with the external force propagated through the sheet detected by the detecting means.

摘要翻译： 为了提供用于识别片材的种类的片材识别装置，包括用于对片材的预定区域进行除湿或加湿并调节预定区域的含水量的调节组件，外力施加装置，用于施加外力 到达水分含量调节的片材的预定区域;以及检测装置，用于在由外力施加装置施加外力的同时检测通过片材传播的外力; 其中外力施加到通过外力施加装置通过调节组件调节其含水量的预定区域，并且根据由检测装置检测到的通过片材传播的外力来识别片材的种类。

公开(公告)号：US20080115597A1

公开(公告)日：2008-05-22

申请号：US11749961

申请日：2007-05-17

申请人： Kazushige OHNO ,  Koji Shimato ,  Norihiko Yamamura

发明人： Kazushige OHNO ,  Koji Shimato ,  Norihiko Yamamura

IPC分类号： G01M19/00 ,  B29C45/76 ,  G01B17/00

CPC分类号： G01N19/08 ,  F01N3/0222 ,  F01N2330/06 ,  F01N2330/14 ,  G01M5/0025 ,  G01M5/0033 ,  G01M5/0075 ,  G01N2203/0017 ,  G01N2203/0062 ,  G01N2203/0212 ,  G01N2203/0248

摘要： A method for inspecting a honeycomb fired body includes transporting the honeycomb fired body along a transportation line, and inspecting the honeycomb fired body for a crack during the transporting step.

摘要翻译： 蜂窝烧制体的检查方法包括沿着输送线输送蜂窝烧制体，在输送工序中检查蜂窝烧制体的裂纹。

公开(公告)号：US5495771A

公开(公告)日：1996-03-05

申请号：US233420

申请日：1994-04-28

申请人： Chikayoshi Sumi ,  Kiyoshi Nakayama

发明人： Chikayoshi Sumi ,  Kiyoshi Nakayama

IPC分类号： G01N29/00 ,  A61B8/00 ,  A61B8/08 ,  G01N3/00 ,  G01N3/02 ,  G01N33/44 ,  G01N33/483 ,  G01D7/02

CPC分类号： A61B8/485 ,  A61B8/00 ,  G01N2203/0075 ,  G01N2203/0212 ,  G01N2291/02827 ,  G01N2291/0289

摘要： There are provided an elasticity measuring method of measuring an elastic constant of elasticity of an elastic body, for example, an elastic rubber, an organism or a living body, etc., which is soft and rather incompressible, by means of measuring an internal strain using energy such as ultrasounds, an X-ray, and magnetism, where the elastic constant includes, for example, typically shear modulus, Young's modulus, etc.; and an elasticity measuring apparatus adapted to practice such an elasticity measuring method. According to such method and apparatus, the elastic constant distribution within the subject is detected only through measuring the strain distribution within the subject, without measuring the stress distribution. The elasticity measuring method is of detecting the ratio of elastic value-to-elastic value, which are representative of levels of elasticity involved in a reference point on a predetermined straight line extending inside of a subject and a predetermined observation point on the straight line, respectively, by means of detecting the ratio of strain-to-strain, which are involved in said referencepoint and said observation point, respectively, with respect to a direction toward which the straight line extends.

摘要翻译： 提供了一种弹性测量方法，其通过测量内部应变来测量柔软且相当不可压缩的弹性体弹性常数例如弹性橡胶，生物或活体等 使用诸如超声波，X射线和磁性的能量，其中弹性常数包括例如典型的剪切模量，杨氏模量等; 以及适于实施这种弹性测量方法的弹性测量装置。 根据这种方法和装置，仅通过测量受试者内的应变分布来检测受试者内的弹性常数分布，而不测量应力分布。 弹性测量方法是检测弹性值对弹性值的比例，其代表在被检体内部延伸的预定直线上的参考点和直线上的预定观察点所涉及的弹性水平， 分别通过相对于直线延伸的方向分别检测参与所述参考点和所述观察点的应变 - 应变的比率。