Zwick Roell

Neu-Ulm, Germany

Zwick Roell

Neu-Ulm, Germany
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Koprivc A.,Zwick Roell | Koprivc A.,Zwick Roell Zwick United States
Advanced Materials and Processes | Year: 2014

The Center for Automotive Research (CAR) created the Coalition for Automotive Lightweighting (CALM) to support collaborative efforts of auto manufacturers and suppliers to integrate mixed materials for mass reduction. A mixed materials environment requires understanding the limitations and advantages of specific materials and the methods available to join them. Applying aluminum and aluminum alloys where strength is required yet complex shapes are desirable, designers achieve weight reduction goals without sacrificing performance or form. Structural adhesives must be thoroughly characterized to assess their capacity to cohesively join dissimilar surfaces, manage the varying expansion rates of the materials to which they are bonded, and enable the properties profile required by the application. Zwick/Roell, a testing equipment supplier based in Germany, has developed Allround-Line testing system that is well suited to the high throughput test environment mandated by both materials selection routines and quality management processes for lightweighting initiatives.


Muller G.,Zwick Roell
Paper Technology | Year: 2011

The tests carried out demonstrate the following points: • Classification of corrugated board to DIN 55468 does not correspond to the range of use of heavy-duty corrugated board as required today. • To describe the behaviour of corrugated board according to humidity, additional parameters must be incorporated into the classification. • To describe the long-term behaviour of corrugated board requires creep testing, for which modified ECT and flexure tests are suitable. • Puncture resistance determined by the puncture test has no overall consistent significance with regard to the performance of heavy-duty corrugated board. • Bending stiffness as determined by the 4-point bending test has overall consistent significance with regard to the performance of heavy-duty corrugated board and can be measured quickly and easily using today's testing machines.


Headway M.,Zwick Roell | Headway M.,Zwick United States
Advanced Materials and Processes | Year: 2013

The article discusses the integration of robots into production lines and other areas of automotive. The highest levels of automated production are achieved by integrating robots into production lines, such as those widely used in the automotive industry. Requiring little interaction with human operators, industrial robots work at the leading edge of automation, increasing quality and productivity while reducing costs. Specimen alignment errors represent yet another aspect of human error that can occur during testing. Alignment errors may result during specimen clamping with an incorrect grip angle, inconsistent clamping length, or off-center clamps. Humans are also subject to conditions that robotic systems are not, such as operator fatigue and poor habits that can result from extended periods of routine testing.


Koprivc A.,Zwick Roell
Advanced Materials and Processes | Year: 2013

Implementing composites in large-volume auto manufacturing requires a comprehensive understanding of how composite materials behave in operation. Volkswagen is producing substantial portions of the XL1 in lightweight aluminum and carbon fiber-reinforced polymer matrix composites (CFRP). The monocoque frame, all exterior body parts, and functional elements such as anti-roll bars are all made of CFRP. The challenge of using CFRP in automotive applications lies in the difficulty and high cost of the production process. This has limited use of these materials to racing vehicles, premium sports cars, and technology-demonstration vehicles such as the XL1. The variables in composites that can be adjusted to achieve the required balance of properties demand a testing solution that is flexible and adaptable to the specific material. As such, characterization of composites is an important part of the materials selection process.

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