Measurement of the Contacting Stress in Hot Extrusion using Optical Fibers

使用光纤测量热挤压中的接触应力

• 批准号: 02452107
• 负责人: HATAMURA Yotaro
• 金额: $ 4.35万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452107/
• 关键词: Metal forming; Extrusion; Pressure; Optical fiber; Measurement; Tribology; Sensor; 摩擦応力

A new stress sensor has been developed for the measurement of contacting stress in extrusion using an optical fiber displacement meter.(1) Development of a pressure sensor using optical fibersA new pressure sensor using an optical fiber displacement meter has been developed. A hole has been made from the rear side of the tool to remain a circular thin plate on the tool surface. Pressure can be detected from the deformation of the thin plate using an optical fiber displacement meter. Pressure distribution acting on the the tool surface in the compression of a circular cylinder has been measured using the sensor. The characteristic of the sensor is to be able to detect the contacting stress with lubrication and in the condition of large slip between the tool and the material.(2) Application to the extrusionPressure distribution acting on the contacting surface has been measured using the developed sensor. Pressure is nearly constant on the container surface with the lubrication. On the other hand, Pressure increases according to the distance from the die exit owing to the friction on the container surface with no lubrication.(3) Subjects for the futureHeat proof of the optical fiber probe will be improved. Frictional stress sensor using two optical fiber probes wiII be developed.

已经开发了一种新的应力传感器，以使用光纤位移仪进行挤出中的接触应力测量。（1）使用光纤传感器开发了使用光纤传感器开发压力传感器的新压力传感器。已经从工具的后侧制成了一个孔，以保持刀具表面上的圆形薄板。可以使用光纤位移仪从薄板的变形中检测到压力。使用传感器测量了作用在圆柱体压缩中的刀具表面的压力分布。传感器的特征是能够通过润滑和材料之间的大滑移来检测接触应力。（2）使用已开发的传感器测量了对作用在接触表面的挤压压力分布。润滑的容器表面上的压力几乎是恒定的。另一方面，由于容器表面上的摩擦而没有润滑的摩擦，压力会增加压力。（3）将改善光纤探针的未来热证明受试者。使用两个光纤探针WIII开发摩擦应力传感器。