Ultrasonic monitoring of nozzle and cavity during injection moulding

被引：5

作者：

Brown, EC ^{[1
]}

Dawson, AJ ^{[1
]}

Coates, PD ^{[1
]}

机构：

[1] Univ Bradford, IRC Polymer Sci & Technol, Bradford BD7 1DP, W Yorkshire, England

来源：

JOURNAL OF REINFORCED PLASTICS AND COMPOSITES | 2002年 / 21卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

ultrasound; nozzle; cavity; temperature;

D O I：

10.1177/0731684402021005444

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Ultrasonic techniques are recognised as powerful sources of process information. Transducers are applied directly, are non-invasive, yet interrogate the entire melt cross-section, while data are available real-time. During injection moulding, two zones are considered: nozzle and cavity. In the nozzle, ultrasonic velocity measurement provides temperature and pressure information. Mean temperatures not observed by other techniques are detected. Previous extrusion based experience is used to address issues of high temperature transducer operation. In the cavity, changes in reflection coefficient and ultrasonic velocity provide information on mould filling and part cooling. Various mould geometries are monitored using a number of ultrasonic transducers.

引用

页码：441 / 450

页数：10