一种材料局部机械强度检测系统的设计

Design of Detection System of Local Mechanical Intensity of Materials

设计了一种基于MSP430单片机的材料局部机械强度检测系统,它以双孔微剪切测定材料局部强度方法为原理。系统通过步进电机驱动剪切工具,由载荷传感器和位移传感器来采集数据,经MSP430单片机内置的A/D转换器处理后,得到载荷和位移曲线,进而检测出被测材料的最大屈服点,根据材料最大屈服点处的载荷值确定材料的机械强度,从而建立了以MSP430单片机为控制器的高速实时检测系统。实验表明,该方法是一种合理的、具有较高精度的快速检测材料局部强度的手段。

A detecting system of local mechanical intensity of materials is designed based on MSP430 single chip computer and the principle of double hole micro-shear method. The shear tool is driven by stepping motor, and the data are collected with load sensor and displacement sensor. Through conversion and processing by A/D converter inside MSP430, the load and displacement curves are obtained, thus the maximum yield limit of materials is detected. In accordance with the load value at the maximum yield limit, the mechanical intensity of the materials is determined. Therefore, the high-speed real-time detecting system with MsPg30 as the controller is built. The experiments indicate that the method is reasonable and high precise measure for detecting local material intensity quickly.