HBK technology is used for research on experimental investigations on the dynamic behavior and fracture of composite materials at the University of Siegen.
For raising the standards of production and living, the measuring of electrical or physical quantities, such as current, voltage, strain, temperature, and pressure, are essential. This is why, over the years, several research institutes at the University of Siegen have used measurement technology in their research projects. As far back as in the beginning of 1975, strain gauges and measuring equipment manufactured by HBK were employed at the University of Siegen. Later, HBK measuring systems with three or even six and more amplifiers were used to determine strain and/or displacement. Some of them have been in use for more than four decades, which speaks for itself. Recently, several HBK Genesis HighSpeed data acquisition (DAQ) systems, such as GEN7t and GEN17tA, have been used in projects at different institutes at the University of Siegen.
Since materials respond differently to static and dynamic loadings, the investigation of material behavior is a topic of interest for research teams.
Mohammad Reza Khosravani, a doctoral student at the time and now a PhD in Mechanical Engineering, has recently explored “experimental investigations on the dynamic behavior and fracture of composite materials” at the Institute of Solid Mechanics at University of Siegen. “Over the past few years, we used HBK products for performing the above mentioned experimental research”, he explains. “In detail, we performed investigations on the fracture mechanics of two different composite materials—sandwich composite T-joints and ultra-high performance concrete (UHPC). In this regard, we used two split Hopkinson pressure bars (SHPB) in our laboratory which were equipped with HBK products and a high speed camera.” The results have been published in several peer-reviewed journals.
With the data provided by the strain gauges and DAQ system, stress-strain curves of sandwich T-joints under static and dynamic loads were created. The obtained curves indicate the load carrying capacities of these structural elements.
This is a unique high speed measurement software that automatically detects all available Genesis HighSpeed systems. With Perception, fast and reliable processing is achievable and StatStream technology enables the software to visualize up to 10 gigabytes of data in 10 seconds. In addition, control and updates can be carried out from any computer.
