ESTIMATION METHOD OF STRESS AND STRAIN HISTORY IN CEMENT-BASED COMPOSITE MATERIALS AND CALCITE PARTICLE AGGREGATES

    公开(公告)号:US20230258509A1

    公开(公告)日:2023-08-17

    申请号:US18014475

    申请日:2021-07-08

    Abstract: For measuring the stress history in a simple form, which is widely applicable to various types of structural materials which the elastic modulus is different from each other, a large number of calcite particles is embedded as a stress sensor in a cement-based composite material that can be elastically deformed after receiving an external.
    A twin-crystal density of the calcite particles is measured after an external force is applied to the composite material, to convert the twin-crystal density to a strain by an approximate formula set in terms of a strain ε (%) generated in the composite material and a twin-crystal density Dtw (lines/mm) of the calcite particles, and further to convert this strain to a stress by the elastic modulus of the composite material, whereby to estimate the history of stress and strain. The approximate formula between strain and twin-crystal density is independent of the modulus of the composite material and is used in a common form.

    TOOL WITH OVER PRESSURE INDICATOR AND LOCKOUT
    4.
    发明申请
    TOOL WITH OVER PRESSURE INDICATOR AND LOCKOUT 有权
    工具与压力指示器和锁定

    公开(公告)号:US20160299015A1

    公开(公告)日:2016-10-13

    申请号:US14683369

    申请日:2015-04-10

    Abstract: A tool is used in securing or clamping two or more workpieces together provides a visual indication to a user of the tool of an acceptable range of compression pressure exerted by the tool on a work surface of the workpieces and a visual indication of when a maximum compression pressure exerted by the tool on the work surface has been exceeded.

    Abstract translation: 用于固定或夹紧两个或多个工件的工具一起为工具的使用者提供了由工具在工件的工作表面上施加的可接受的压缩压力范围的视觉指示,以及何时最大压缩 已经超过了工具在工作表面上施加的压力。

    SENSOR ASSEMBLY AND MEDICAL DEVICE INCORPORATING SAME
    6.
    发明申请
    SENSOR ASSEMBLY AND MEDICAL DEVICE INCORPORATING SAME 审中-公开
    传感器组件和包含其的医疗设备

    公开(公告)号:US20130255400A1

    公开(公告)日:2013-10-03

    申请号:US13904687

    申请日:2013-05-29

    Abstract: Apparatus are provided for sensor assemblies and related medical devices. An embodiment of a sensor assembly includes a beam and a sensing element disposed on the beam. The sensor assembly also includes a structure to prevent deflection of the beam when a force applied to the sensor assembly is greater than a threshold value.

    Abstract translation: 为传感器组件和相关医疗设备提供设备。 传感器组件的实施例包括梁和设置在梁上的感测元件。 传感器组件还包括当施加到传感器组件的力大于阈值时防止梁的偏转的结构。

    Load Indicator
    7.
    发明申请
    Load Indicator 有权
    负载指示灯

    公开(公告)号:US20110303787A1

    公开(公告)日:2011-12-15

    申请号:US13129715

    申请日:2009-11-16

    CPC classification number: G01L1/06 B64C25/00 B64D2045/008

    Abstract: An overload detecting assembly comprising a lateral probe (18) which cooperates with a first load bearing member (10) as it moves towards a second load bearing member (11) and in turn deflects an indicator member (20) which may take a permanent set when a yield point is exceeded. Ready inspection of the indicator member reveals whether or not it has been bent. The indicator member may comprise a cantilevered beam (24) formed in a sleeve (20) coaxial with the load bearing members (10, 11). Alternatively, an extension (25) of the probe (18) may deflect laterally at a midpoint under overload conditions. Alternatively, the probe (18) may form an impression in an indicator member (30) under overload conditions.

    Abstract translation: 一种过载检测组件,包括横向探针(18),当横向探针(18)朝向第二承载构件(11)移动时与第一承载构件(10)协作,并且进而偏转指示构件(20),所述指示器构件 当超过屈服点时。 指示器构件的准备检查显示是否弯曲。 指示器构件可以包括形成在与承载构件(10,11)同轴的套筒(20)中的悬臂梁(24)。 或者,探针(18)的延伸部(25)可以在过载条件下的中点侧向偏转。 或者,探针(18)可以在过载条件下在指示器构件(30)中形成印模。

    APPARATUS WITH DAMAGE INDICATION FEATURE
    8.
    发明申请
    APPARATUS WITH DAMAGE INDICATION FEATURE 有权
    具有损伤指示特征的装置

    公开(公告)号:US20100308163A1

    公开(公告)日:2010-12-09

    申请号:US12680203

    申请日:2008-09-29

    CPC classification number: G01M5/0033 B33Y80/00 G01L1/06 Y10T403/11

    Abstract: A method of designing and manufacturing apparatus. The method comprises: creating a design space; analysing expected loads acting on the design space to calculate a first load path within the design space; analysing expected loads acting on the design space when the apparatus is in a damaged state to calculate a second load path within the design space; selecting a region of the second load path which falls outside the first load path; and creating a final design which includes: a primary structure falling within the first load path; and a damage indication feature falling within the selected region. The damage indication feature is designed to provide a visual indication when the load transmitted by the damage indication feature exceeds a threshold.The load generates a stress in the primary structure which exceeds the stress in the damage indication feature until the primary structure becomes damaged, at which point the load generates a stress in the damage indication feature which exceeds the stress in the primary structure.

    Abstract translation: 设备制造方法。 该方法包括:创建设计空间; 分析作用在设计空间上的预期载荷,以计算设计空间内的第一载荷路径; 分析当装置处于损坏状态时作用在设计空间上的预期载荷,以计算设计空间内的第二载荷路径; 选择落在第一负载路径外的第二负载路径的区域; 并创建最终设计,其包括:落在第一加载路径内的主要结构; 以及落在所选区域内的损伤指示特征。 伤害指示功能被设计为当损伤指示特征传输的负载超过阈值时提供可视指示。 负载在主结构中产生超过损伤指示特征中的应力的应力,直到主结构被损坏为止,此时负载在损伤指示特征中产生超过主结构中的应力的应力。

    Device for monitoring fatigue life
    9.
    发明授权
    Device for monitoring fatigue life 失效
    监测疲劳寿命的装置

    公开(公告)号:US4590804A

    公开(公告)日:1986-05-27

    申请号:US573081

    申请日:1984-01-23

    Inventor: Maurice A. Brull

    CPC classification number: G01L1/06 G01N3/062 G01N2203/027 G01N2203/0282

    Abstract: A device for monitoring the fatigue life of a structural member is comprised of at least one and preferably a plurality of substantially flat, elongated coupons which are fabricated of the same material as that of the member being monitored. The coupons are secured in parallel to the member so that they all experience the same strain history as the member. Each of the coupons includes a different stress concentrating notch pattern so that the application of the same strain to all of the coupons results in the development of different stress concentrations within the coupons. The development of different stress concentrations within the coupons causes each coupon to have a different fatigue life, the fatigue life of each coupon being a predetermined percentage of the fatigue life of the structural member being monitored.

    Abstract translation: 用于监测结构构件的疲劳寿命的装置由至少一个并且优选多个基本平坦的细长的试样构成,其由与被监测的构件相同的材料制成。 优惠券与会员平行固定,以便他们都体验与会员相同的应变史。 每个试样包括不同的应力集中切口图案,使得对所有试样施加相同的应变导致在试样中产生不同的应力集中。 试样中不同应力集中的发展使得每个试样具有不同的疲劳寿命,每个试样的疲劳寿命是被监测的结构构件的疲劳寿命的预定百分比。

    Assessment of flaw growth potential in structural components
    10.
    发明授权
    Assessment of flaw growth potential in structural components 失效
    评估结构部件中的缺陷增长潜力

    公开(公告)号:US4107980A

    公开(公告)日:1978-08-22

    申请号:US804483

    申请日:1977-06-07

    CPC classification number: G01B5/30 G01L1/06

    Abstract: A method for predicting damage accumulation in a structural component in which a gage in the form of a metal strip having a flaw therein of predetermined length is attached to the component having a flaw therein of a length assumed to be greater than the length of any other flaw therein. Damage accumulation in the structural component is tracked by following the growth of the flaw in the gage and determining from that growth the growth in the flaw in the component. Thus, in accordance with this method, flaw growth in a gage is related to flaw growth in a structural component rather than to time so that damage actually accumulated in the component can be predicted regardless of the time factor.

    Abstract translation: 一种用于预测在其中具有预定长度的缺陷的金属带形式的金属带形式的量规的结构部件中的损伤积聚的方法附接到其中具有假定其长度的长度的缺陷的部件 缺陷在其中。 结构部件中的损伤积累是通过跟踪量规缺陷的增长来确定的,并从该增长中确定部件缺陷的增长。 因此,根据这种方法,量规中的缺陷生长与结构部件中的缺陷生长有关,而不是时间,从而可以预测组件中实际累积的损伤,而与时间因素无关。

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