专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20240044760A1 DELAYED FRACTURE CHARACTERISTIC EVALUATION METHOD AND PROGRAM 审中-公开
公开(公告)号：US20240044760A1
公开(公告)日：2024-02-08
申请号：US18255932
申请日：2021-07-29
申请人： JFE STEEL CORPORATION
发明人： Yuichi MATSUKI , Toyohisa SHINMIYA , Kinya NAKAGAWA , Yuji YAMASAKI
IPC分类号： G01N3/20
CPC分类号： G01N3/20 , G01N2203/0064 , G01N2203/0067 , G01N2203/0236 , G01N2203/0282
摘要： To further enhance the evaluation accuracy of a delayed fracture. Focusing on the fact that a calculated stress value serving as the reference for the occurrence of the delayed fracture changes depending on analysis conditions of a forming analysis, a value obtained by changing a stress value serving as the reference for the occurrence of the delayed fracture according to the analysis conditions for analyzing an intended formed article (article for practical use) is used as the reference for evaluating the delayed fracture. For example, analysis conditions of a forming analysis in an evaluation test of the delayed fracture are matched with analysis conditions of a forming analysis of an article for practical use represented by an actual automobile component.

2. 发明申请

US20170268973A1 METHOD OF AND APPARATUS FOR DETECTING A CRACK IN A PAIR OF PIEZOELECTRIC ELEMENTS BASED ON TRANSFER FUNCTION 审中-公开
公开(公告)号：US20170268973A1
公开(公告)日：2017-09-21
申请号：US15448843
申请日：2017-03-03
申请人： NHK SPRING CO., LTD.
发明人： Mikio ARAI
IPC分类号： G01N3/32
CPC分类号： G01N3/32 , G01N2203/0051 , G01N2203/0064 , G01N2203/0617 , G01N2203/0623 , G01R29/22 , G11B5/4826 , G11B5/483 , G11B5/4873 , G11B5/5552 , G11B19/08 , G11B20/1816
摘要： The present invention provides a method of surely detecting a crack in piezoelectric elements regardless of size of the crack. The method includes applying voltage to a first piezoelectric element of a pair of piezoelectric elements to cause deformation in the first piezoelectric element, forcibly deforming a second piezoelectric element of the pair of the piezoelectric elements to generate voltage from the second piezoelectric element according to the deformation of the first piezoelectric element, finding a transfer function of the pair of the piezoelectric elements based on values of the applied voltage and the generated voltage, and detecting presence or absence of a crack in the pair of the piezoelectric elements based on an objective value obtained from the found transfer function.

3. 发明申请

US20140358452A1 METHOD FOR ESTIMATING CRACK LENGTH PROGRESSIONS 审中-公开
标题翻译：估计裂纹长度进展的方法
公开(公告)号：US20140358452A1
公开(公告)日：2014-12-04
申请号：US14282081
申请日：2014-05-20
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Christian AMANN , Kai KADAU
IPC分类号： G01M15/14 , G06F17/11
CPC分类号： G01M15/14 , G01M99/00 , G01N2203/0064 , G01N2203/0066 , G01N2203/0212 , G06F17/11
摘要： A method for estimating the crack length ãn+1 of at least one crack (2) in a component (1): At a first instant, the length ãn of the crack is determined and the length of the crack ãn+1=ãn+Δãn is estimated at a second instant by using the integration scheme a ~ n + 1 = a ~ n + d   a ~ 1 6 + d   a ~ 2 3 + d   a ~ 3 3 + d   a ~ 4 6 ( 17 ) d   a ~ 1 = d   Nf  ( Δ   K n ) ( 18 ) d   a ~ 2 = d   Nf  ( Δ   K n + 1 2  Δ   K n 2   a ~ n  d   a ~ 1 ) ( 19 ) d   a ~ 3 = d   Nf  ( Δ   K n + 1 2  Δ   K n 2   a ~ n  d   a ~ 2 ) ( 20 ) d   a ~ 4 = d   Nf  ( Δ   K n + Δ   K n 2  a ~ n  d   a ~ 3 ) , ( 21 ) with Δãn designating the increase in the crack size, N designating the number of cycles, and K designating the stress intensity factor.
摘要翻译：用于估计部件（1）中的至少一个裂纹（2）的裂纹长度ãn+ 1的方法：在第一时刻，确定裂纹的长度ãn，并且裂纹的长度ãn+ 1 =ãn+ ＆Dgr;ãn通过使用积分方案估计在第二时刻a〜n + 1 = a〜n + da〜〜〜a a a a a a a a a a a a a a a （18）（18）d（n）（＆Dgr;K nn n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n + 1 2〜〜a a a （20）（20）（20）（20）d（n）（＆Dgr;K2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 （21）与＆Dgr;指定裂纹尺寸的增加，N指定周期数，K指定应力强度因子。

4. 发明申请

US20100116062A1 CRACK-PROPAGATION PREDICTION METHOD AND PROGRAM 有权
标题翻译：裂缝传播预测方法和程序
公开(公告)号：US20100116062A1
公开(公告)日：2010-05-13
申请号：US12530394
申请日：2008-07-24
申请人： Yoichi Sato , Koichi Morimura , Shinichiro Hori , Shintaro Kumano , Takanori Karato , Masato Kurita
发明人： Yoichi Sato , Koichi Morimura , Shinichiro Hori , Shintaro Kumano , Takanori Karato , Masato Kurita
IPC分类号： G01N19/08
CPC分类号： G01N3/00 , G01M5/0016 , G01M5/0033 , G01N2203/0062 , G01N2203/0064 , G01N2203/0066 , G01N2203/0218
摘要： The precision of crack-propagation prediction is improved by taking into consideration a variation in the error due to inspectors and inspection methods. There is provided a crack-propagation prediction method including a correlation-information preparing step of measuring the length of a crack initiated in a test object by a plurality of inspectors and/or a plurality of inspection methods and obtaining correlation information between data acquired through the measurement and the condition of an actual crack; a crack-length estimating step of estimating the actual length of the crack initiated in an inspection target on the basis of the crack length measured by an inspector during inspection of the inspection target and the correlation information; and a crack-propagation-curve estimating step of estimating a crack-propagation curve of the inspection target originating from the crack length estimated in the crack-length estimating step.
摘要翻译：通过考虑到由于检查人员和检查方法导致的误差的变化，提高了裂纹扩展预测的精度。提供了一种裂纹扩展预测方法，包括：相关信息准备步骤，通过多个检查者和/或多个检查方法测量在测试对象中发起的裂纹的长度，并获得通过测量和实际裂纹的状况; 裂纹长度估计步骤，基于在检查对象的检查期间由检查员测量的裂纹长度和相关信息，估计检查对象中发生的裂纹的实际长度; 以及裂纹扩展曲线估计步骤，用于估计由裂纹长度估计步骤中估计的裂缝长度产生的检测对象的裂纹扩展曲线。

5. 发明授权

US07039528B2 Method for detecting leak before rupture in a pipeline 失效
标题翻译：检测管道破裂前泄漏的方法
公开(公告)号：US07039528B2
公开(公告)日：2006-05-02
申请号：US10710702
申请日：2004-07-29
申请人： Ming Gao , Sergio Limon
发明人： Ming Gao , Sergio Limon
IPC分类号： G01B3/34 , G01B5/28
CPC分类号： G01N3/28 , G01N2203/0064 , G01N2203/0066 , G01N2203/0218 , G01N2203/0274
摘要： A method for leak-before-rupture assessment including using a failure assessment diagram (FAD) assessment curve from a crack initiation based FAD analysis to analyze a crack in a material; and using a ductile tearing analysis in conjunction with the FAD assessment curve to detect a crack exhibiting at least one of ductile tearing stability and tearing instability prone to rupture during growth of the crack.
摘要翻译：一种用于破裂前泄漏的方法，包括使用来自基于裂纹发生的FAD分析的故障评估图（FAD）评估曲线来分析材料中的裂纹; 并且使用与FAD评估曲线结合的延性撕裂分析来检测在裂纹生长期间易于破裂的延展性撕裂稳定性和撕裂不稳定性中的至少一种的裂纹。

6. 发明申请

US20050050961A1 Method and apparatus for determining hydrogen embrittlement 有权
标题翻译：用于确定氢脆的方法和装置
公开(公告)号：US20050050961A1
公开(公告)日：2005-03-10
申请号：US10656094
申请日：2003-09-05
申请人： Luong Tran , Eric Barta , Matthias Schriever
发明人： Luong Tran , Eric Barta , Matthias Schriever
IPC分类号： G01N3/00 , G01N3/06 , G01N3/20 , G01N19/08
CPC分类号： G01N3/20 , G01N19/08 , G01N2203/0023 , G01N2203/0064 , G01N2203/027 , G01N2203/0682
摘要： A method and apparatus for determining failure of a test component. The apparatus, according to a selected method, is able to determine the embrittlement potential of a selected procedure for a selected material. The apparatus is able to determine the embrittlement potential in a substantially quick and non-human fallible manner.
摘要翻译：一种用于确定测试部件故障的方法和装置。根据所选择的方法，该装置能够确定所选择的材料的所选择的程序的脆化电位。该装置能够以基本上快速且非人类的方式确定脆化电位。

7. 发明授权

US06684167B2 Method and apparatus for measuring energy consumed during plastic deformation in multi-ply board systems 失效
标题翻译：在多层板系统中测量塑性变形期间能量消耗的方法和装置
公开(公告)号：US06684167B2
公开(公告)日：2004-01-27
申请号：US09855325
申请日：2001-05-15
申请人： Wadood Hamad , Robert A. Hulbert , Henry J. Kent
发明人： Wadood Hamad , Robert A. Hulbert , Henry J. Kent
IPC分类号： G01L104
CPC分类号： G01N3/20 , G01N33/34 , G01N2203/0023 , G01N2203/0064 , G01N2203/0282
摘要： A method and an apparatus for predicting a score-line cracking propensity of a multi-ply substrate. The method includes the steps of: bending the multi-ply substrate; acquiring tensile load data from the multi-ply substrate during bending; and computing a material property of a top ply of the multi-ply substrate based on the acquired tensile load data. The material property must show a strong correlation to the score-line cracking propensity of the multi-ply substrate. The material property which is computed is the energy consumed in plastic deformation of the top ply during the fracture process. The measurement results can be used to predict score-line cracking propensity in multi-ply board systems, such as multi-ply paperboard.
摘要翻译：一种用于预测多层基板的刻痕线开裂倾向的方法和装置。该方法包括以下步骤：弯曲多层基底; 在弯曲期间从多层基板获取拉伸载荷数据; 以及基于获得的拉伸载荷数据计算多层基板的顶层的材料性质。材料性质必须显示与多层底物的刻痕线开裂倾向的强相关性。计算的材料性质是在断裂过程中顶层的塑性变形中消耗的能量。测量结果可用于预测多层板系统（如多层纸板）的刻痕线开裂倾向。

8. 发明授权

US06598485B1 Method and device for evaluating quality of concrete structures 失效
标题翻译：混凝土结构质量评估方法及装置
公开(公告)号：US06598485B1
公开(公告)日：2003-07-29
申请号：US09722098
申请日：2000-11-24
申请人： Yiching Lin , Chiafeng Chang
发明人： Yiching Lin , Chiafeng Chang
IPC分类号： G01N300
CPC分类号： G01N33/383 , G01N3/30 , G01N2203/0064 , G01N2203/0676
摘要： An evaluation device and an evaluation method for detecting quality of concrete structures comprising a conductive impact device, a sensing film, a receiver, an operation device and an auxiliary circuit, the device and the method is characterized by calculating a penetration time of the conductive film before measuring the depth of a crack in the concrete, and the evaluation work which conventionally requires dual receivers only needs now a single receiver for completion of the work. Therefore, cost and works for evaluation and signal analysis are reduced; this largely enhances the evaluation efficiency and technical level.
摘要翻译：一种用于检测包括导电冲击装置，感测膜，接收器，操作装置和辅助电路的混凝土结构的质量的评估装置和评估方法，所述装置和方法的特征在于计算导电膜的穿透时间在测量混凝土中裂缝的深度之前，传统上要求双重接收器的评估工作仅需要一个完成工作的接收器。因此，降低了评估和信号分析的成本和工作。这大大提高了评估效率和技术水平。

9. 发明申请

US20020139194A1 Method and article of manufacture for estimating material failure due to crack formation and growth 有权
标题翻译：用于估计由于裂纹形成和生长引起的材料故障的方法和制造
公开(公告)号：US20020139194A1
公开(公告)日：2002-10-03
申请号：US09945058
申请日：2001-08-31
申请人： COOPER TIRE & RUBBER COMPANY
发明人： William Vernon Mars
IPC分类号： G01N019/08
CPC分类号： G01N3/32 , G01N2203/0064 , G01N2203/0066 , G01N2291/02827
摘要： A multiaxial strain cycle (32, 72) is received that is described by a strain tensor that is a function of time. A hyperelastic constitutive model (34, 74) corresponding to the material is received. A fatigue crack growth curve (36, 76) is obtained. A cracking energy density is calculated (50, 90) based on the constitutive model (34, 74) and the multiaxial strain cycle (32, 72). The cracking energy density is a function of material plane (44, 84) and indicates the portion of the total elastic strain energy density that is available to be released on a selected material plane (48, 88). A cracking plane is determined (54, 98) based upon the cracking energy density. A fatigue life is estimated (60, 100) based on the cracking plane and the fatigue crack growth curve (36, 76).
摘要翻译：接收由作为时间的函数的应变张量描述的多轴应变循环（32,72）。接收对应于材料的超弹性本构模型（34,74）。得到疲劳裂纹扩展曲线（36,76）。基于本构模型（34,74）和多轴应变周期（32,72）计算裂纹能量密度（50,90）。裂纹能量密度是材料平面（44,84）的函数，并且表示可在所选择的材料平面（48,88）上释放的总弹性应变能量密度的部分。基于裂化能量密度确定裂纹平面（54,98）。基于裂纹平面和疲劳裂纹扩展曲线（36,76）估计疲劳寿命（60,100）。

10. 发明申请

US20020017144A1 Device and method for fatigue testing of materials 失效
标题翻译：材料疲劳试验装置及方法
公开(公告)号：US20020017144A1
公开(公告)日：2002-02-14
申请号：US09922087
申请日：2001-08-06
发明人： Toby J. Miles , Gerald Deshais , Robin J. Williams , Martin McElhone
IPC分类号： G01N003/32
CPC分类号： G01N3/32 , G01N2203/0008 , G01N2203/0023 , G01N2203/0035 , G01N2203/0064 , G01N2203/0066 , G01N2203/0073 , G01N2203/0226 , G01N2203/0441 , G01N2203/0623
摘要： A device (10) for fatigue testing of materials comprises a frame (14), first and second clamping means (16,18) for holding a specimen (12) to be tested. First and second mounting means (20,22) mount the clamping means (16,18) on the frame (14). The mounting means (20,22) vibrationally isolate the clamping means (16,18) from the frame (14). Actuator means (24) moves the first clamping means (16) relative to the second clamping means (18) to apply a low cycle load on the specimen (12). Electrical insulating means (30) electrically insulate the frame (14) from the specimen (12). A shaker (26) is coupled to the second clamping means (18) to apply a high cycle load on the specimen (12). A detector (32) detects the vibration of the specimen (12) and sends an electrical signal to a control unit (42) which determines the resonant frequency of the specimen (12). The control unit (42) sends a signal to the shaker (26) to maintain the high cycle load at the resonant frequency of the specimen (12). Electrical potential drop probes (38) are provided on the specimen (12) to send a second electrical signal to the control unit (42) which is arranged to determine the rate of crack growth, the fatigue life to crack initiation and fatigue life to failure of the specimen (12).
摘要翻译：用于材料的疲劳试验的装置（10）包括框架（14），用于保持待测样品（12）的第一和第二夹紧装置（16,18）。第一和第二安装装置（20,22）将夹紧装置（16,18）安装在框架（14）上。安装装置（20,22）将夹紧装置（16,18）与框架（14）振动隔离。致动器装置（24）相对于第二夹紧装置（18）移动第一夹紧装置（16），以在试样（12）上施加低的循环负荷。电绝缘装置（30）使框架（14）与试样（12）电绝缘。振动器（26）联接到第二夹紧装置（18），以对试样（12）施加高的循环负荷。检测器（32）检测样本（12）的振动，并将电信号发送到确定样本（12）的共振频率的控制单元（42）。控制单元（42）向振动器（26）发送信号，以将高周期负荷维持在样本（12）的共振频率。在试样（12）上设有电位降探测器（38），以向控制单元（42）发送第二电信号，控制单元（42）用于确定裂纹扩展速率，裂纹开始的疲劳寿命和疲劳寿命的样品（12）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式