公开(公告)号：US6116076A

公开(公告)日：2000-09-12

申请号：US103000

申请日：1998-06-22

申请人： John L. Sullivan ,  Jeffrey J. Bott ,  Jacek A. Eubig ,  John S. Fortunato

发明人： John L. Sullivan ,  Jeffrey J. Bott ,  Jacek A. Eubig ,  John S. Fortunato

IPC分类号： G01N19/02

CPC分类号： G01N19/02

摘要： A horizontal plane frictional coefficient testing apparatus and methods are provided which include a substantially horizontal planar platen having two spaced, parallel movable rails. The rails are actuated by a motor adapted for reversibly raising and lowering the rails relative to the platen. A sled of predetermined weight is also provided having a central body and two pairs of outwardly extending axles, with each pair of axles being of equal length and formed with a wheel at the end thereof. The wheels of the sled are formed for engagement with the rails and engagement of the wheels with the rails locates the sled generally parallel to the rails. In operation, a sample of sheet material is fixed to the sled and the sled is placed on the rails, with the rails being in a raised position. Subsequently, the rails are lowered to gently place the sled onto the platen or a test medium fixed to the platen. A drive arm is included with the apparatus for pulling the sled relative to the platen at various rates of translation. A load sensor mounted on the drive arm measures in real time the force applied to the sled during the course of the test. The data collected by the load sensor is transmitted to a central processing unit which calculates the coefficients of friction. A timing mechanism may be provided to monitor the dwell time of the sled on the platen prior to initiation of the tests. Also, a semi-rigid coupling may be used to connect the sled to the drive arm.

摘要翻译： 提供了一种水平面摩擦系数测试装置和方法，其包括具有两个间隔开的平行的可移动导轨的基本水平的平面压板。 轨道由适用于相对于压盘可逆地升高和降低轨道的电动机致动。 还提供了具有中心体和两对向外延伸的轴的预定重量的滑板，每对轴具有相等的长度并在其端部形成有轮。 滑板的车轮形成为用于与轨道接合并且车轮与轨道的接合将滑架大致平行于轨道定位。 在操作中，片材的样品被固定到滑板上，并且滑轨被放置在轨道上，轨道处于升高位置。 随后，将导轨降低以将滑板轻轻地放置在压板上或固定在压板上的测试介质上。 用于以不同的翻译速率拉动滑板相对于压板的装置包括驱动臂。 安装在驱动臂上的负载传感器在测试过程中实时测量施加到滑轨的力。 由负载传感器收集的数据被传送到计算摩擦系数的中央处理单元。 可以提供定时机构以在开始测试之前监视滑板在滑板上的停留时间。 此外，半刚性联轴器可以用于将滑板连接到驱动臂。

公开(公告)号：US06539809B1

公开(公告)日：2003-04-01

申请号：US09543948

申请日：2000-04-06

申请人： Walter W. Weiss ,  John L. Sullivan ,  Jeffrey J. Bott ,  Jacek A. Eubig

发明人： Walter W. Weiss ,  John L. Sullivan ,  Jeffrey J. Bott ,  Jacek A. Eubig

IPC分类号： G01N310

CPC分类号： G01N3/14 ,  G01N3/08 ,  G01N2203/0075

摘要： A test apparatus is provided for measuring loads applied to an object and for measuring the deformation of the object in response to the loads. The test apparatus includes a stationary work head and a movable arm. The movable arm is selectively movable toward or away from the stationary work head. A load cell has a driven end mounted to the movable arm and a sensing end spaced from the movable arm. A movable work head is mounted to the sensing end and is configured for applying a load to a test object positioned between the stationary and movable work heads. A liner scale also is mounted to the sensing end of the load cell, and a linear encoder or read head is mounted in spaced relationship to the linear scale. The encoder reads deflection in the apparatus in view of loads applied during a test. A controller is provided for moving the movable work head in accordance with test parameters. The controller also receives output from the load cell and the read head, and uses that outputted information to develop stress-strain analytical data.

摘要翻译： 提供了一种测试装置，用于测量施加到物体上的载荷并用于测量物体响应于载荷的变形。 测试装置包括固定工作头和可动臂。 可动臂可选择性地朝向或远离固定工作头移动。 测力传感器具有安装到可动臂的驱动端和与可动臂间隔开的感测端。 可移动工作头安装在感测端，并被构造成将负载施加到位于固定和可动工作头之间的测试对象。 线圈刻度也安装到测力传感器的感测端，并且线性编码器或读取头以与线性刻度线隔开的关系安装。 考虑到在测试期间施加的负载，编码器读取设备中的偏转。 提供控制器，用于根据测试参数移动可移动工作头。 控制器还接收来自测力传感器和读取头的输出，并使用该输出信息来产生应力应变分析数据。

公开(公告)号：US06370962B1

公开(公告)日：2002-04-16

申请号：US09594135

申请日：2000-06-14

申请人： John L. Sullivan ,  Jeffrey J. Bott

发明人： John L. Sullivan ,  Jeffrey J. Bott

IPC分类号： G01N308

CPC分类号： G01N3/08 ,  G01N3/317 ,  G01N33/34 ,  G01N2203/001 ,  G01N2203/0017 ,  G01N2203/005 ,  G01N2203/0091 ,  G01N2203/0252 ,  G01N2203/0278 ,  G01N2203/028 ,  G01N2203/0282 ,  G01N2203/0623

摘要： A system is provided for determining the tensile characteristics of a sample under dynamic conditions. The system includes an apparatus adapted to accelerate the sample to a desired test velocity and maintain the test velocity through a predetermined test run, and a microprocessor for controlling the apparatus, data collection and data evaluation. The apparatus is formed with two movable clamping jaws for engaging the sample and sensors for measuring characteristics necessary to determine the stress-strain characteristics of the sample. During the course of the test, a sample is accelerated to a predetermined test velocity and one end of the sample is caused to be instantaneously fixed. The other end of the sample is then translated away from the fixed end at the test velocity. A closed loop between the microprocessor, a linear encoder measuring velocity, and a linear motor can be formed to accordingly adjust and maintain the desired test velocity.

摘要翻译： 提供了用于在动态条件下确定样品的拉伸特性的系统。 该系统包括适于将样品加速到期望的测试速度并且将测试速度保持在预定测试运行中的装置以及用于控制装置，数据收集和数据评估的微处理器。 该装置形成有两个可移动夹爪，用于接合样品和传感器，用于测量确定样品的应力 - 应变特性所需的特性。 在试验过程中，将样品加速至预定的测试速度，使样品的一端立即固定。 然后样品的另一端以测试速度从固定端翻转。 可以形成微处理器之间的闭环，线性编码器测量速度和线性电动机，以相应地调节和保持所需的测试速度。

公开(公告)号：US6119505A

公开(公告)日：2000-09-19

申请号：US871515

申请日：1997-06-09

申请人： John L. Sullivan ,  Jeffrey J. Bott ,  Jacek A. Eubig ,  John S. Fortunato

发明人： John L. Sullivan ,  Jeffrey J. Bott ,  Jacek A. Eubig ,  John S. Fortunato

IPC分类号： G01N19/02

CPC分类号： G01N19/02

摘要： A horizontal plane frictional coefficient testing apparatus and methods are provided which include a substantially horizontal planar platen having two spaced, parallel movable rails. The rails are actuated by a motor adapted for reversibly raising and lowering the rails relative to the platen. A sled of predetermined weight is also provided having a central body and two pairs of outwardly extending axles, with each pair of axles being of equal length and formed with a wheel at the end thereof. The wheels of the sled are formed for engagement with the rails and engagement of the wheels with the rails locates the sled generally parallel to the rails. In operation, a sample of sheet material is fixed to the sled and the sled is placed on the rails, with the rails being in a raised position. Subsequently, the rails are lowered to gently place the sled onto the platen or a test medium fixed to the platen. A drive arm is included with the apparatus for pulling the sled relative to the platen at various rates of translation. A load sensor mounted on the drive arm measures in real time the force applied to the sled during the course of the test. The data collected by the load sensor is transmitted to a central processing unit which calculates the coefficients of friction. A timing mechanism may be provided to monitor the dwell time of the sled on the platen prior to initiation of the tests. Also, a semi-rigid coupling may be used to connect the sled to the drive arm.

摘要翻译： 提供了一种水平面摩擦系数测试装置和方法，其包括具有两个间隔开的平行的可移动导轨的基本水平的平面压板。 轨道由适用于相对于压盘可逆地升高和降低轨道的电动机致动。 还提供了具有中心体和两对向外延伸的轴的预定重量的滑板，每对轴具有相等的长度并在其端部形成有轮。 滑板的车轮形成为用于与轨道接合并且车轮与轨道的接合将滑架大致平行于轨道定位。 在操作中，片材的样品被固定到滑板上，并且滑轨被放置在轨道上，轨道处于升高位置。 随后，将导轨降低以将滑板轻轻地放置在压板上或固定在压板上的测试介质上。 用于以不同的翻译速率拉动滑板相对于压板的装置包括驱动臂。 安装在驱动臂上的负载传感器在测试过程中实时测量施加到滑轨的力。 由负载传感器收集的数据被传送到计算摩擦系数的中央处理单元。 可以提供定时机构以在开始测试之前监视滑板在滑板上的停留时间。 此外，半刚性联轴器可以用于将滑板连接到驱动臂。