Monitoring foam expansion and the study of foaming kinetics during in-situ foam filling are essential to ensure a desirable quality of foam-filled profiles. In this current research, a novel technique is proposed for monitoring in-situ aluminum foam filling of hollow profiles. In this technique, instantaneous temperatures measured at various locations of the hollow profile being filled have been used to determine the foam expansion rate. Hence, the apparatus developed in this study is named as thermal expandometer. To demonstrate the usefulness of this thermal expandometer, aluminum foaming is performed inside a steel tube by heating the foaming precursor at different rates, and an analysis of the effect of heating rate on the foam expansion rate is presented.

监测泡沫膨胀和就地泡沫填充过程中的泡沫动力学研究对于确保泡沫填充型材具有理想的质量至关重要。在当前的研究中，提出了一种新技术来监测空心型材的原位铝泡沫填充。在该技术中，已使用在被填充的中空型材的各个位置处测量的瞬时温度来确定泡沫膨胀率。因此，本研究开发的设备称为热膨胀仪。为了证明该热膨胀计的有用性，通过以不同的速率加热发泡前体在钢管内部进行铝发泡，并给出了加热速率对泡沫膨胀速率的影响的分析。