研究并给出了自制压力传感器的设计原理及性能指标 .利用自行设计的传感器 ,预埋在用细质土模拟的粉末材料中 ,测定在常温下成型过程中加、卸载时压坯内的应力分布 .重点研究对成型后的残余应力分布的影响 ,得出了材料成型过程中残余应力分布规律和裂纹成因 .解决了粉末材料成型开裂问题 ,实践也证明自行设计的传感器稳定性能好 ,适应性强 . The design principle and performance index of self-made pressure sensor were researched and presented.Using the self-designed sensor embedded in the powder material simulated by fine soil, the stress in the green compact during loading and unloading at normal temperature was measured Distribution.The focus of research on the impact of the residual stress distribution after molding, obtained the residual stress distribution law and cause of cracks in the material forming process to solve the formation of cracking cracking powder materials, practice also proves the stability of the sensor designed, adaptability Strong.