Zwick Lends its Support to Fatigue Test Stand For Suspension Forks

Fatigue tests are a vital element of quality assurance in machine and vehicle manufacturing. To further enhance its teaching in this field, HS Ulm (Ulm University of Applied Sciences, Germany) has developed a fatigue test stand for suspension forks as part of a study project, with support from Zwick in the form of equipment and expertise.

The project involves studying the effect on the life-expectancy of mountain-bike suspension forks of cyclic loads generated while traveling downhill. To obtain realistic data, a video camera was used to record damping travel on a bike being ridden downhill, with data import via software written in-house.

Ulm University of Applied Sciences builds special test stand

The test stand was also designed by the university and comprises a four-column load frame. Suspension forks are subjected to cyclic loads via a servo-hydraulic testing actuator attached to the lower mounting-plate. System control is by ControlCube - 'the world's smallest controller' - with Cubus testing software. A particular feature of this combination is ease of operation, allowing students to quickly become familiar with fatigue testing and carry out tests unsupervised after only a short time. As an added bonus, the system's 4kHz control frequency, 19-bit-resolution data-logging and capacity for expansion to 32 control channels enable it to be used for more complex applications whenever required.
Data from field tests is imported via the Cubus software and used to perform realistic simulation tests. "Using the Zwick iteration software we can import and simulate any given route profile and generate findings regarding wear and load under real conditions," states Dipl. Ing. Daniel Stiehle of HS Ulm's testing laboratory. ControlCube is also used to import data from strain gauges applied to fork hub-mounts, providing detailed information about local loads on the forks.

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    ZwickRoell Ltd (UK & Ireland). (2019, February 09). Zwick Lends its Support to Fatigue Test Stand For Suspension Forks. AZoM. Retrieved on December 04, 2021 from https://www.azom.com/news.aspx?newsID=30591.

  • MLA

    ZwickRoell Ltd (UK & Ireland). "Zwick Lends its Support to Fatigue Test Stand For Suspension Forks". AZoM. 04 December 2021. <https://www.azom.com/news.aspx?newsID=30591>.

  • Chicago

    ZwickRoell Ltd (UK & Ireland). "Zwick Lends its Support to Fatigue Test Stand For Suspension Forks". AZoM. https://www.azom.com/news.aspx?newsID=30591. (accessed December 04, 2021).

  • Harvard

    ZwickRoell Ltd (UK & Ireland). 2019. Zwick Lends its Support to Fatigue Test Stand For Suspension Forks. AZoM, viewed 04 December 2021, https://www.azom.com/news.aspx?newsID=30591.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Submit