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1. 发明授权

US4526039A Removable strain gauge fixture and method for measuring accumulated strain in a material 失效
标题翻译：用于测量材料中累积应变的可移动应变仪夹具和方法
公开(公告)号：US4526039A
公开(公告)日：1985-07-02
申请号：US506969
申请日：1983-06-23
申请人： Harry Ceccon , Richard A. Murphy , H. David Reed , Oscar Orringer
发明人： Harry Ceccon , Richard A. Murphy , H. David Reed , Oscar Orringer
IPC分类号： G01B7/16
CPC分类号： G01B7/16
摘要： The invention encompasses a removable strain gauge fixture, and a method for measuring accumulated stress in a structural component, such as a railroad rail. The strain gauge fixture generally comprises first and second side pieces connected by a strain concentrating bar of reduced cross-section, an electronic strain sensor mounted on the bar, and first and second tapered pins extending from the front faces of each of the side pieces. The tapered pins transmit accumulated strain from the component being measured to the strain focusing bar when the pins are inserted into mating holes in the component. The method of the invention generally comprises the steps of providing a pair of holes in the component mateable with the tapered pins of the strain gauge fixture, inserting the tapered pins into the holes of the material in order to transfer accumulated strain in the material to the strain concentrating bar, taking a first strain measurement via the strain sensor on the bar, removing the tapered pins from the material, and taking a second strain reading from the strain sensor.
摘要翻译：本发明包括可拆卸的应变计夹具，以及用于测量诸如铁路轨道的结构部件中的累积应力的方法。应变计夹具通常包括通过减小截面的应变集中棒连接的第一和第二侧部件，安装在杆上的电子应变传感器以及从每个侧部件的前表面延伸的第一和第二锥形销。当销插入组件的配合孔时，锥形销将累积应变从被测量部件传递到应变聚焦棒。本发明的方法通常包括以下步骤：在可与应变计固定装置的锥形销配合的部件中提供一对孔，将锥形销插入材料的孔中，以将材料中的累积应变转移到应变集中棒，通过杆上的应变传感器进行第一次应变测量，从材料上移除锥形销，并从应变传感器获取第二应变读数。

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