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。

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。