This work concerns the accurate dimensional measurement of metal parts directly in a production environment. Applying an approach with the simultaneous measurement of part dimension and temperature over time (dynamically) followed by modeling of the thermo-mechanical effects, the corrected length at 20 C and its measurement uncertainty can be predicted. This paper describes a test campaign where the local diameter of a 40 mm cylindrical steel workpiece cooling down from an initial surface temperature after turning of 27 C to an ambient temperature of 21 C was predicted after 10 min with a systematic error of 0.5 m and an expanded uncertainty (k = 2) of 0.9 m.

这项工作涉及直接在生产环境中准确测量金属零件的尺寸。应用随时间（动态）同时测量零件尺寸和温度的方法，然后对热机械效应进行建模，可以预测 20 C 下的校正长度及其测量不确定度。本文描述了一个测试活动，其中预测 10 分钟后 40 毫米圆柱形钢工件从初始表面温度冷却到 21 摄氏度的局部直径，系统误差为 0.5 m，并且扩展不确定性 ( k = 2) 为 0.9 m。