Abstract
The old focus on using automation was simply to increase productivity and reduce costs. Today, the purpose of automation has shifted to broader issues. Highly automated processes ensure high quality on a constant level, if it is connected with a high degree of (automated) monitoring and control. Meanwhile, continuous process and quality monitoring by non-destructive testing (NDT) is an accepted procedure to early diagnosis of irregular process conditions, followed by an NDT-based feed back control and optimization. Consequently, the development of process integrated NDT is an important scientific task. Such developments have to fulfil the requirements of today’s industrial production concerning integrability, automation, speed, reliability and profitability. Flat steel production and processing, gas assisted injection moulding and cold joining processes are some examples of a successful application of the processintegrated NDT.
Highlights
Automation was developed in order to avoid hazardous or unpleasant manual operations and to increase productivity
If the old focus on using automation was to increase productivity and reduce costs, currently the purpose of automation has shifted to broader issues
With increasing levels of automation the consequences of an error rapidly approach a catastrophe. It is for this reason that a high degree of process automation requires a high degree of monitoring and control of process and product quality
Summary
Automation was developed in order to avoid hazardous or unpleasant manual operations and to increase productivity. Manufacturers are becoming less vertically integrated and increasingly rely on external suppliers even with highly sophisticated parts and components These new challenges of automated manufacturing result in a steadily increasing need for non-destructive testing (NDT), which as an integrated component of the process, allows its continuous monitoring and qualitybased control. In order to determine variations of mechanical properties or residual stress during machining, micro-magnetic sensors can be used, which are integrated into the machining tool, as proposed by Wolter et al [8] As described, another application of micro-magnetic methods is the monitoring of quality characteristics in flat steel products during producing and processing (Altpeter et al [9], Dobmann et al [10], Wolter et al [11]).
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